Troy-Bilt 21A-644H766 Troybilt Tiller User Manual

0TRtllcBILT' ----

Operator's Manual

Rear-tine Tiller Models

644HmBronco TM

645AmBronco TM

Model 644H Shown (bumper syles vary)

IMPORTANT:READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-covered, brush-

covered or grass-covered land unless the engine's exhaust system is equipped with a spark arrester meeting applicable local or state laws (if any).

If a spark arrester is used, it should be maintained in effective working order by the operator. In the State of California the above is required by law

(Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands. A spark arrester

for the muffler is available by contacting the service department at Troy-Bilt LLC, P.O. Box 361131 Cleveland, Ohio 44136-0019.

TROY-BILT LLC, P.O. BOX 361131, CLEVELAND, OH 44136-0019

PRINTED IN USA FROM NO. 769-00585B

(11/2003)

TABLEOFCONTENTS

Content Page Content Page

Customer Support 2 Maintenance 19

Safety 3 Off-season Storage 24

Assembly 6 Troubleshooting 25

Features and Controls 10

Operation 13 Warranty Back Cover

FINDINGMODELNUMBER

This Operator's Manual is an important part of your new lawn tractor. It will help you assemble, prepare and maintain the

unit for best performance. Please read and understand what it says.

Before you start assembling your new equipment, please locate the model plate on the equipment and

copy the information from it in the space provided below. A sample model plate is also given below. You can

locate the model plate by looking at the rear of the tine shield. This information will be necessary to use the

manufacturer's web site and/or help from the Customer Support Department or an authorized service dealer.

www.troybilt:com CLEVELAND,01144136

330-558-7220

1-800-520"5520

Copy the model number here:

Copy the serial number here:

CUSTOMERSUPPORT

Please doNOTreturnthe unit to the retailer withoutfirstcontactingCustomerSupport.

If you have difficultyassembling this product or have any questions regarding the controls, operation or maintenance of

this unit, you can seek help from the experts. Choose from the options below:

Visit troy-bilt.com for many useful suggestions. Click on Customer Support button and you

will get the four options reproduced here. Click on the appropriate button and help is

immediately available.

The answer you are _The answer you are

IlOOKingfor could be just ....,,_y.... _ ,,.........,_0._......... looking for could bejust

a mouse click away! a mouse click away!

The engine manufacturer is responsible for all engine-related issues with regard to

performance, power-rating, specifications, warranty to engine

and service. Please refer the

manufacturer's Owner's/Operator's Manual, packed separately with your unit, for more

information.

Safety

SPARK ARRESTERWARNING TO RESIDENTSOF CALIFORNIAAND SEVERALOTHERSTATES

Under California law, and under the laws of several other states, you are not permitted to operatean

internal combustion engine using hydrocarbon fuels on any forest, brush, hay, grain, or grass

covered land; or land covered by any flammable agricultural crop without an engine spark arrester in

continuous effective working order.

The engine on the unit is an internal combustion engine which burns gasoline,a hydrocarbon fuel, and must be equipped with a

spark arrester muffler in continuous effective working order. The spark attester must be attached to the engine exhaust system in

such a manner that flames or heatfrom the system will not ignite flammable material. Failureof the owner/operator of the unit to

comply with this regulation is a misdemeanor under California law (and other states) and may also be a violation of other state

and/or federal regulations, laws, ordinancesor codes. Contactyour local fire marshal or forest service for specific information

about which regulations apply in your area.

Training

1. Carefully readthis

Owner's Manual,the

separateEngineOwner's

Manual,and any other literature you may

receive. Bethoroughly familiar with the

controls and the proper use of the tiller

and its engine. Know how to stop the unit

and disengagethe controls quickly.

2. Never allow children to operate the

tiller. Never allow adults to operatethe

tiller without proper instruction.

3. Keepthe area of operation clear of all

persons, particularly children and pets.

4. Keepin mind that the operator or user

is responsible for accidents or hazards

occurring to other people,their property,

andthemselves.

Preparation

1. Thoroughly inspect the area where the

tiller is to be used and remove all foreign

objects.

2. Besure all tiller controls are released

and both wheelsare in the Wheel Drive

position before starting the engine.

3. Do not operatethe tiller without

wearing adequate outer garments. Avoid

loose garments or jewelry that could get

caught in moving parts.

4. Do not operatethe tiller when barefoot

or wearing sandals, sneakers,or light

footwear. Wear protectivefootwear that

will improve footing on slippery surfaces.

5. Do not till near underground electric

cables, telephone lines, pipes or hoses. If

in doubt, contact your telephone or utility

company.

6. Warning: Handlefuel with care; it is

highly flammable and its vapors are

explosive. Be sure to take the following

precautions:

a. Store fuel in containers specifically

designedfor this purpose.

b. The gas cap shall never be removed

or fuel added while the engine is

running. Allow the engine to cool

for several minutes before adding

fuel.

c. Keepmatches,cigarettes, cigars,

pipes, openflames, and sparks

awayfrom the fuel tank and fuel

container.

d. Fill fuel tank outdoors with extreme

care. Neverfill fuel tank indoors.

Useafunnel or spout to prevent

spillage.

e. Replaceall fuel tank and container

caps securely.

I. If fuel is spilled, do not attempt to

start the engine, but movethe

machineawayfrom the area of

spillage and avoid creating any

source of ignition until fuel vapors

havedissipated.

7. Never make adjustments when engine

is running (unless recommended by

manufacturer).

Operation

1. Do not put hands or feet nearor under

rotating parts. The tines begin to rotate

once the engine starts and the Forward

Clutch Bail (or ReverseClutch Control) is

engaged.

2. Exerciseextreme caution when on or

crossing gravel drives, walks, or roads.

Stay alert for hidden hazardsor traffic. Do

not carry passengers.

3. After striking a foreign object, stop the

engine, remove the wire from the spark

plug and prevent it from touching the

spark plug, thoroughly inspect the

machinefor any damage, and repair the

damage before restarting and operating

the machine.

4. Exercisecaution to avoid slipping or

falling.

5. If the unit should start to vibrate abnor-

mally, stop the engine, disconnect the

spark plug wire and prevent it from

touching the spark plug, and check

immediately for the cause. Vibration is

generally a warning of trouble.

6. Stop the engine, disconnect the spark

plug wire and prevent it from touching

the spark plug wheneveryou leavethe

operating position, before unclogging the

tines, or when making any repairs, adjust-

ments or inspections.

Section1: Safety

7. Takeall possible precautions when

leavingthe machineunattended. Stop the

engine. Disconnect spark plug wire and

move it away from the spark plug. Be

sure both wheels are in the Wheel Drive

position.

8. Before cleaning, repairing, or inspect-

ing, stop the engineand makecertain all

moving parts havestopped. Disconnect

the spark plug wire and prevent it from

touching the spark plug to prevent acci-

dental starting.

9. The flap on the tine hood must be

down when operating the tiller.

10. Never usethe tiller unless proper

guards, plates, or other safety protective

devices are in place.

11. Do not run engine in an enclosed

area. Engineexhaust contains carbon

monoxide gas, a deadly poison that is

odorless, colorless, and tasteless.

12. Keepchildren and pets away.

13. Never operatethe tiller under

engine powerif the wheels are in the

Freewheelposition. Inthe Freewheel

position,the wheelswill notholdthe

tiller backand the revolvingtines could

propelthe tiller rapidly, possibly

causinglossof control.Always engage

the wheelswith the wheel drive pins in

the Wheel Drive position before starting

the engine or engaging the tines/wheels

with the Forward Clutch Bail or the

ReverseClutch Control.

14. Beaware that the tiller may unexpect-

edly bounce upward or jump backward

and bepropelled toward you if the tines

should strike extremely hard packed soil,

frozen ground, or buried obstacles like

largestones, roots, or stumps. If in doubt

about the tilling conditions, always use

the following operating precautionsto

assist you in maintaining control of the

tiller:

a. Walk behindandto one side of the

tiller, usingone handonthe han-

dlebars. Relax your arm, but use a

securehand grip.

b. Use a deep depthregulator

setting.

c. Useslower enginespeeds.

d. Clear the tilling area of all large

stones, rootsandother debris.

e. Avoidusingdownwardpressure

on handlebars.If needbe, use

slightupwardpressureto keep the

tines from diggingtoo deeply.

f. Beforecontactinghard packedsoil

at the end of a row, reduceengine

speedand lilt handlebarsto raise

tines out of the soil.

g. In an emergency, stoptines and

wheels by releasing whichever

clutchcontrolis engaged. Donot

attemptto restrainthe tiller.

15. Do not overload the tiller's capacity

by attempting to till too deeply at too fast

a rate.

16. Neveroperate the tiller at high

transport speeds on slippery surfaces.

Look behind and use great care when

backing up.

17. Do not operatethe tiller on a slope

that is too steepfor safety. When on

slopes, slow down and makesure you

have good footing. Never permit the tiller

to freewheel down slopes.

18. Neverallow bystanders nearthe unit.

19. Only use attachments and acces-

sories that are approved by the manufac-

turer of the tiller.

20. Usetiller attachments and acces-

sories when recommended.

21. Neveroperate the tiller without good

visibility or light.

22. Neveroperate the tiller if you are

tired, or under the influenceof alcohol,

drugs or medication.

23. Operatorsshall not tamper with the

engine-governor settings on the machine;

the governor controls the maximum safe

operating speed to protect the engine and

all moving partsfrom damage caused by

overspeed. Authorized service shall be

sought if a problem exists.

24. Do not touch engine parts which may

be hot from operation. Let parts cool

down sufficiently.

25. Pleaseremember: You can always

stop the tines and wheels by releasingthe

Forward Clutch control or the Reverse

Clutch control (whichever control you

have engaged), or by moving the throttle

control lever on the engine to "OFF"or

"STOP".

26. To load or unload the tiller, seethe

instructions in Section4 of this Manual.

27. Use extreme caution when reversing

or pulling the machinetowards you.

28. Start the engine carefully according to

instructions andwith feet well away from

the tines.

29. Neverpick up or carry a machine

while the engine is running.

Maintenance and Storage

1. Keepthe tiller, attachments and acces-

sories in safe working condition.

2. Checkall nuts, bolts, and screws at

frequent intervals for proper tightness to

besure the equipment is in safeworking

condition.

3. Neverstore the tiller with fuel in the

fuel tank inside a building where ignition

sources are present such as hot water

and space heaters,furnaces, clothes

dryers, stoves, electric motors, etc.).

Allow engine to cool before storing in any

enclosure.

4. To reduce the chancesof a fire hazard,

keepthe engine free of grass, leaves,or

excessive grease.

5. Store gasoline in a cool, well-ventilated

area, safely away from any spark- or

flame-producing equipment. Store

gasoline in an approved container, safely

away from the reachof children.

6. Refer to the Maintenancesections of

this Manual and the separate Engine

Owner's Manualfor instructions if the

tiller is to be stored for an extended

period.

7. Never perform maintenancewhile the

engine is running or the spark plug wire

is connected, except when specifically

instructed to do so.

8. If the fuel tank hasto be drained, do

this outdoors.

Section1: Safety

Decals

For your safety and the safety of others,

various safety and operational decals are

located on your unit (see Figure 1 below).

Keepthe decals clean and legible at all

times. Contact your local service dealer

or the factory for replacementsif any

decalsare damagedor missing.

Referto the separate parts catalog for

decal locations, part numbers and

ordering instructions.

ForwardClutchControl

OperatingInstruction

ReverseClutchControl

OperatingInstruction

StartingStabilization

Message on engine

Warning Messages

ontine hood

HotSurfaces

Warning on belt cover

Figure 1: Location of Safety and Operating Decals (Model 644H shown).

Operating Symbols

Various symbols (shown here, with word

descriptions) are used on the tiller and engine

(your unit may not haveallof the symbols).

FAST SLOW STOP

i÷i I÷1 R

CHOKE CHOKE REVERSE

ON OFF

€,E--> <--lZ,

TILLER DIRECTION

ROTATING

TINES

BAIL BAIL

_-_ 0_ENGAGED DISENGAGED

LEVERDIRECTION

TO AVOID SERIOUS INJURY:

•READTHE OWNER'S MANUAL.

•KNOWLOCATIONSANDFUNCTIONSOFALL CONTROLS.

•KEEPALLSAFETYDEVICESAND SHIELDSIN PLACEANDWORKING.

•NEVERALLOWCHILDRENOR UNINSTRUCTEDADULTSTOOPERATETILLER.

•SHUT OFFENGINEAND DISCONNECTSPARKPLUGWIRE BEFOREMANUALLYUNCLOG-

GINGTINESOR MAKINGREPAIRS.

•KEEPBYSTANDERSAWAYFROM MACHINE.

•KEEPAWAYFROM ROTATINGPARTS.

•USEEXTREMECAUTIONWHENREVERSINGOR PULLINGTHE MACHINETOWARDSYOU.

Assembly

WARNING

To prevent personal injury or

property damage, do not start

the engine until all assembly

steps are complete and you

have read and understandthe

safety and operating instruc-

tions in this manual.

Introduction

Carefullyfollow these assembly steps to

correctly prepareyour tiller for use. It is

recommendedthat you read this Section

in its entirety before beginning assembly.

NOTE: Enginesyles vary by model. The

engineon your tiller may appear differ-

ently than those shown in illustrations

and Figuresthroughout this manual.

Inspectunit

Inspectthe unit and carton for damage

immediately after delivery. Contact the

carrier (trucking company) if you find or

suspect damage. Inform them of the

damageand request instructions for filing

aclaim. To protect your rights, put your

claim in writing and mail acopy to the

carrier within 15 days after the unit has

beendelivered.

STEP 1: Unpacking Instructions

1. Removeany cardboard inserts and

packagingmaterial from the carton.

Removeany staples from the bottom of

the carton andthen lift the carton up and

off the unit.

2. The tiller is heavyand you should not

attempt to remove it from the shipping

platform until the handlebarsare

installed. The procedure for removing the

tiller is explained in Step 3 of these

assemblysteps.

NOTE:Be careful not to severely bend any

of the control cables on the unit.

3. Removeall unassembled parts and

the separate hardware bag from the

carton. Checkthat you havethe items

listed below (contact your local dealeror

the factory if any items are missing or

damaged). NOTE: Usethe screw length

template (Fig. 2-1) to identify screws.

LooseParts List

Qty. Description

1HandlebarSupport (seeA, Fig.2-2,

page7)

1 HandlebarAssembly

(see K, Fig. 2-2)

Thefo//owing itemsare in the

hardware bag:

4 Hexhd. screw, 5/16-18 x 1-1/2"

2 Hexhd. screw, 3/8-16 x 3/4"

2 Flatwasher, 3/8"

4 Split Iockwasher,5/16"

4 Hexnut, 5/16"-18

2 HexIocknut, 3/8"-16

IMPORTANT:Motor oil mustbe addedto

the enginecrankcasebeforethe engine

is started. Followthe instructionsin this

"Assembly" section.

NOTE:LEFTand RIGHTsides of the tiller

are as viewed from the operator's

position behindthe handlebars.

Tools/MaterialsNeededfor

Assembly

(2) 1/2" open-end wrench*

(1) 3/8" open-end wrench*

(2) 9/16" open-end wrench*

(1) Large adjustable wrench

(1) Scissors (to trim plastic ties)

(1) Ruler (for belt tension check)

(1) Block of wood (to support tiller

when removing wheels)

(1) Automotive-type air pressure gauge

(1) Cleanoil funnel

(1) Clean, high-quality engine oil. Refer

to the Engine Owner Manual for

engine oil specifications and quantity

required. Do not overfill.

*Adjustable wrenches may be used.

Figure2-1: Toidentifylength ofscrew,

placescrewontemplateasshownand

measuredistancebetweenbottomofscrew

headandtipofscrew.

STEP 2: Attach Handlebar

1. Attach the two legs of the handlebar

support (A, Fig. 2-2) loosely to the inner

sides of the tiller frame using two 3/8"-16

x 3/4" hex hd. screws (B), two 3/8" flat

washers (C) and 3/8"-16 hex Iocknuts (D).

2. Using using two 5/16"-18 x 1-1/2" hex

hd. screws (G), 5/16" split Iockwashers

(H) and 5/16"-18 hex nuts (I), loosely

attach the the handlebarsupport (A) using

the upper holes.

3. There are three height adjustment holes

in the two handlebarsupport brackets. E

& F, Fig.2-2). Use a setting that will

position the handlebarsat approximately

waist level when the tines are 3"-4" into

the soil. Looselyattach the handlebar

support bracketsto the outside of the

handlebarassembly (K) using two 5/16"-

18 x 1-1/2" screws (G), 5/16" split lock-

washers (H) and 5/16"-18 hex nuts (I).

NOTE:If a support bracket will not move,

loosen attaching screw (J) and nut.

IMPORTANT:The support brackets must

be assembledto the outsideof the

handlebarassembly.

4. Tighten all handlebar mounting

hardware securely.

STEP 3: Move Tiller Off Shipping

Platform

To move the tiller without the engine

running, put the wheels in their

FREEWHEELposition, as described below.

1. Usea sturdy block to raise onewheel

off the ground.

2. Removethe hairpin cotter (L, Fig. 2-3)

and wheel drive pin (M). Slide the wheel

inward on the wheel shaft (N). Reinstall

the wheel drive pin and hairpin cotter

through the wheel shaft only (not through

the wheel hub). Repeatwith the other

wheel.

3. Using the handlebaras a lever, roll the

tiller to a flat area.

IMPORTANT:Before starting the engine,

the wheels must be placed in their WHEEL

DRIVEposition (pins through wheel hubs

and wheel shaft). This procedure is

described in "Wheel Drive Pins" in

Section2: Assembly

Fig. 2-2: Attach handlebar.

Fig. 2-3: Wheel in FREEWHEELING

position (wheel drive pin throughwheel

shaftonly).

Section2: Assembly

STEP4: Install Forward Clutch Cable

1. Carefully unwrap the forward clutch

cable (the cable without a knob attached to

it) from its shipping position and slide the

thin cable wire (T, Fig. 2-4) into the slot in

the cable bracket. Pushthe cableconnector

(U, Fig.2-4) up through the hole in the

bracket until the groove in the connector

snaps into place on the bracket.

2. Threadthe #10-24 hex nut (Z) halfway

onto the screw (V) which runs through the

spring (W, Fig.2-5).

3. Thread screw (V) into cable adjuster (X).

4. Lift and hold the Forward Clutch bail

against the handlebar. SeeFig.2-7.

5. Measurethe length of the cable spring

betweenthe ends of the coils (Fig. 2-7).

The length should be approximately 1-7/8".

If the length is correct, turn the #10-24 hex

nut (Z) down tightly against the cable

adjuster (X) while holding the adjuster in

place. SeeFigure 2-7. If the length is

incorrect, you must make an adjustment to

the cable tension as described in

"Checking andAdjusting Forward Drive

BeltTension" in Section 5. When the

spring length is correct, tighten the hex nut

(Z) against the cable adjuster (X).

STEP5: Install ReverseClutch

Cable

1. Unwrapthe reverse clutch cable (the

cable with a knob and a large hex nut

attached to it) from around its shipping

position and route the cable (CC, Fig.2-8

and Fig. 2-9) up to the cable bracket (BB,

Fig.2-8). Besure that the cable goes

beneaththe Forward Clutch Bail as it is

routed up to the cable bracket.

2. Insert the cable up through the slot in

the cable bracket and position the threaded

assembly as shown in Fig. 2-8. Make sure

that the flat side of the threaded assembly

is aligned with the flat side of the mounting

hole. Slide the large hex nut (DD) up the

cable and tighten it securely.

Fig. 2-4: Installing forwardclutchcable bracket and cable.

Fig. 2-5: Assemble

springand adjuster.

Fig. 2-6: Install forwardclutch cable.

Fig. 2-7: Measure cable spring.

Section2: Assembly

3. Usea cable tie (EE,Fig. 2-9) to fasten

the reverseclutch cableto the left side

handlebar.

4. Test the function of the reverseclutch

cable by pulling the knob out and

releasingit. The knob should return to its

neutral position (resting against bracket)

when it is released. If it doesn't, contact

your local dealer or the factory for

technical assistance.

Flat Side

Fig. 2-8: Install reverse cable mounting

bracketand the reverse clutchcable.

Fig. 2-9: Route reverse clutchcable (CC) as

shown. Attach to handlebar with cable tie

(EE).

STEP6: CheckLevelof

TransmissionGearOil

The transmission was filled with gear oil

at the factory. However, you should check

the gear oil levelto make certain it is

correct.

IMPORTANT:Do not operate the tiller if

the gear oil level is low. Doing so will

result insevere damageto the transmis-

sign components.

1. Put the tiller on levelground. Pullthe

DepthRegulator Lever (FF, Fig. 2-10)

backand then adjust it up or down to the

notch that makesthe tiller level.

2. Removethe oil fill plug (GG,Fig. 2-11)

from the transmission housing and look

into the oil fill hole. You will see the main

drive shaft on oneside of the hole.

3. The gear oil level is correct if the gear

oil is approximately halfway up the side of

the drive shaft.

4. If the gear oil level is low, add gear oil

by referring to "A. To Checkthe Transmis-

sion Gear Oil Level" in Section 5.

STEP 7: Add Motor Oil to Engine

Thetiller is shipped withoutoil in the

engine.

IMPORTANT:Do not start the engine

without first adding motor oil. Severe

engine damagewill result if the engine is

run without oil.

1. Referto the Engine Owner's Manual

(supplied with tiller) for engine oil specifi-

cations and capacities.

2. With the tiller on level ground, pull the

DepthRegulator Lever (FF, Fig. 2-10)

backand then slide it up or down as

necessaryuntil the engine is level.

3. Add motor oil as described in the

EngineOwner's Manual.

4. Movethe Depth Regulator Lever all the

way down until the highest notch is

engaged. This placesthe tines in the

"travel" position.

Fig. 2-10: Adjust DepthRegulator Lever.

Fig. 2-11: Removegear oil fill plug.

STEP 8: Check Hardware for

Tightness

Checkall nuts and screws for tightness.

STEP9: CheckAir Pressurein

Tires)

Usea tire pressuregaugeto check the air

pressure in both tires. Deflateor inflate

both tires equally to 15-to-20 PSI

(pounds per square inch). Besure that

both tires are inflated equally or the unit

will pull to one side.

IMPORTANT:This completes the

assembly steps. Beforeoperating your

tiller, make sure you read the following

Sections in this Manual, as well as the

separateEngineOwner's Manual:

• Section 1: "Safety"

• Section3: "Featuresand Controls"

• Section 4: "Operation"

FeaturesandControls

WARNING

Before operating your

machine, carefully read and

understand all safety, controls

and operating instructions in

this Manual, the separate

Engine Owner's Manual, and

on the decals on the machine.

Failure to follow these

instructions can result in

serious personal injury.

Forward ReverseClutch

ClutchBail Control

Regulator

HandlebarHeight

Adjustment

Anti-ReverseStake

Drive Pin

(on eachwheel)

Figure 3-1: Featuresand controls.

Introduction

This section describesthe locations and

functions of the controls on your tiller.

Referto the next section ("Operation")

for detailed operating instructions.

Practice using these controls, with the

engine shut off, until you understandthe

operation of the controls and feel

confident with each of them.

IMPORTANT:Refer to the separate

engine manufacturer's Engine Owner's

Manual for informationabout the

controls on the engine.

Wheel Drive Pins

WARNING

Never allow either of the

wheels to be in the

FREEWHEEL position when

the engine is running. Always

put both wheels in the WHEEL

DRIVE position before starting

the engine.

Failure to comply could cause

loss of tiller control, property

damage, or personal injury.

through the holes in the wheel shaft (not

the wheel hubs), thus allowing the wheels

to turn freely when the tiller is pushed or

pulled by hand.

To Placethe Wheels in WHEELDRIVEor

FREEWHEEL:

1. Stop the engine, disconnect the spark

plug wire from the spark plug and allow

the engineto cool.

2. Raiseone wheel off the ground and

place a sturdy support under the

transmission.

3. Removethe wheel drive pin (A,

Eachwheel is equipped with a Wheel

Drive Pin (A, Figures3-2 and 3-3) that

secures the wheel to the wheel shaft (B).

The wheels can be positioned in either a

WHEELDRIVEor a FREEWHEELmode.

Before starting the engine, put both

wheels in the WHEELDRIVEposition by

inserting the Wheel Drive Pins through

the wheel hubs andthe wheel shaft. This

"locks" the wheels to the wheel shaft,

causing the wheels to turn when either

the ForwardClutch Bail or the Reverse

Clutch Control is engaged.

Usethe FREEWHEELmode only when the

engine is not running. In FREEWHEEL,

the Wheel Drive Pins are placed only

WARNING

Do not place the tiller on its

side when changing the wheel

drive positions as doing so

could result in gasoline

leaking from the fuel tank.

Failure to follow this instruc-

tion could result in personal

injury or property damage.

Figures3-2 and 3-3) by removingthe

hairpin cotter (C).

Section3: FeaturesandControls

4. FORWHEELDRIVEmode (Figure3-2):

Slide the wheel outward and align the

holes in the wheel hub (D, Figure3-2))

and the wheel shaft (B). Insert the wheel

drive pin (A) through the wheel hub and

the wheel shaft. Securethe wheel drive

pin with the hairpin cotter (C) by pushing

the hairpin cotter in as far as it will go.

Repeatfor the other wheel and then

removethe support from beneaththe

transmission.

5. FORFREEWHEELmode (Figure 3-3):

Slide the wheel inward and insert the

wheel drive pin (A, Figure 3-3) only

through the hole in the wheel shaft (B).

Secure the wheel drive pin with the

hairpin cotter (C) by pushing the hairpin

cotter in as far as it will go. Repeatfor the

other wheel and then removethe support

from beneaththe transmission.

Figure3-2: WHEELDRIVEposition.

Figure3-3: FREEWHEELposition.

Forward Clutch Bail

The Forward Clutch Bail (E, Figure3-4)

controls the engagementof forward drive

to the wheelsand power to the tines.

NOTE: The wheels will rotate in a forward

direction; the tines will rotate counter-

clockwise (backwardtoward the operator).

To Operatethe Forward ClutchBail:

1. Put the wheels in the WHEELDRIVE

position (see the following "WARNING"

statement).

2. Lift and hold the bail against the

handlebar. The wheels and tines will

rotate- and the tiller will move in a

forward direction.

3. Releasethe bail to disengage(stop)

the wheelsandtines. Forwardtiller motion

will stop (the engine will continue to run).

WARNING

Before starting the engine, be

sure that both wheels are in

the WHEEL DRIVE position.

See "Wheel Drive Pins" for

instructions.

Engaging the Forward Clutch

Bail or the Reverse Clutch

Control when the wheels are

not in the WHEEL DRIVE

position could allow the tines

to rapidly propel the tiller

forward or backward.

Failure to comply could cause

loss of tiller control, property

damage, or personal injury.

ReverseClutchControl

The ReverseClutch Control (F, Figure3-4)

controls the engagement of reverse drive

to the wheels and tines. This powered

reversingfeature is used for maneuvering

the tiller only - never engagethe tines in

the ground while going in the reverse

direction.

To Operatethe ReverseClutchControl:

1. Operateonly when the wheels are in

the WHEELDRIVEposition (seethe

"WARNING" statement at the left).

2. Stop all tiller motion by releasingthe

ForwardClutch Bail.

3. Lift up the handlebaruntil the tines

clear the ground, look behindyou to avoid

any obstacles, and then pull the reverse

clutch control knob toward you. The

wheels will rotate in a reverse direction.

4. Releasethe reverseclutch control

knob to disengage (stop) the wheels and

tines. All reversemotion will stop (the

engine will continue to run).

WARNING

•Use extreme cautionwhen

reversing or pulling the

machine towards you. Look

behind to avoid obstacles.

•Never attempt to till in

reverse.

Failure to follow this warning

could result in personal injury

or property damage.

Figure34: FonvardClutchBail (E)andReverse

ClutchControl(F).

Section3: FeaturesandControls

DepthRegulatorLever

This lever (G, Figure3-5) controls the

tilling depth of the tines. Pullthe lever

straight backand slide it up or down to

engagethe notched height settings.

The highest notch (lever all the way

down) raisesthe tines approximately 1-

1/2" off the ground. This "travel" setting

allows the tiller to be movedwithout the

tines digging into the ground. Also use

this setting when starting the engine.

Movethe lever upward to increasethe

tilling depth. The lowest notch allows a

tilling depth of approximately 6"-8",

dependingon soil conditions.

For best results, begin tilling at the

deepestdepth possiblewithout causing

the tiller to bog down. Increasethe tilling

depth from one pass over the soil to the

next.

Shallow

Travel

Position jG

Deep

_Settings

HandlebarHeightAdjustment

The handlebarheight is adjustableto

three different settings (see Figure 3-6).

As a general rule, adjust the handlebars

so they are at waist level when the tines

are 3"-4" into the soil.

To Adjustthe Handlebars:

1. Stop the engine, disconnectthe spark

plug wire from the spark plug and allow

the engineto cool.

2. Removethe screws, Iockwashers and

nuts, reposition the handlebars, and

reinstall the hardware.

Figure3-6: Handlebar height adjustment.

Anti-ReverseStake

This stake is locatedat the rear of the

transmission, under the tine hood (see H,

Figure 3-7). Its purpose is to automati-

cally help preventthe counter-rotating

tines from letting the tiller back up in the

direction of the operator if the tiller

wheels had beeninadvertently left in the

FREEWHEELposition. In this situation,

the Anti-Reverse Stake will beforced

down into the ground, lifting the tines

upward out of the soil and helping

prevent backward motion of the tiller.

TheAnti-ReverseStake requires no adjust-

ment, but should be inspected before

eachtiller useto verify that it swivels

freely. Remove any clogged materials

(dirt, roots, rocks, etc.) that preventthe

Anti-ReverseStakefrom swinging freely.

Figure3-5: Depth regulator lever.

WARNING

•Place the Depth Regulator

Lever in the "travel"

position before starting the

engine. This position

prevents the tines from

touching the ground until you

are ready to begin tilling.

Failure to follow this warning

could result in personal injury

or property damage.

Figure 3-7: Anti-ReverseStake.

ENGINECONTROLS

Referto the engine manufacturer's Engine

Owner's Manual (included in the tiller lit-

erature package)to identify the controls

on your engine.

IMPORTANT:The control for stopping the

engine is located on the engine.

.........................Operation

WARNING

Before operating your

machine, carefully read and

understand all safety (Section

1), controls (Section 3) and

operating instructions (Section

4) in this Manual, in the

separate Engine Owner's

Manual, and on the decals on

the machine.

Failure to follow these instruc-

tions can result in serious

personal injury.

INTRODUCTION

Readthis Section of the manual thor-

oughly beforeyou start the engine. Then,

takethe time to familiarize yourself with

the basic operation of the tiller before

using it in the garden. Find an open, level

areaand practice using the tiller controls

without the tines engagingthe soil (put

tines in "travel" setting). Only after

you've becomecompletely familiar with

the tiller should you begin using it in the

garden.

INITIAL OPERATION

Perform the following maintenanceduring

the first hours of new operation (see

"Maintenance" section in this manual and

inthe EngineOwner's Manual).

1. Changeengine oil after first 2 hours of

new engine operation.

2. Checkfor loose or missing hardware

on unit. Tighten or replace as needed.

3. Checktension on forward drive belt

after first 2 hours of operation.

4. Checktransmission gear oil level after

first 2 hours of operation.

ReverseClutchControl

(knobon backofbracket)

__---_FonNard Clutch Bail

DepthRegulatorLever

Ii-Reverse Stake

Recoil

Figure4-1

Wheel Drive Pin

(oneachwheel)

STARTINGAND STOPPINGTHE

ENGINE

Pre-StartChecklist

Makethe following checks and perform

the following services before starting the

engine.

1. Readthe "Safety" and "Controls"

sections in this manual. Readthe

separateEngineOwner's Manual

provided by the engine manufacturer.

2. Checkthat the wheels are in the

WHEELDRIVEposition (wheel pins must

bethrough the wheel hubs and the wheel

shaft holes).

3. Check unit for loose or missing

hardware. Service as required.

4. Checkengine oil level. SeeEngine

Owner's Manual.

5. Checkthat all safety guards and

covers are in place.

6. Checkair cleaner and engine cooling

system. See Engine Owner's Manual.

7. Attach spark plug wire to spark plug.

8. Fillthe fuel tank with gasoline

according to the directions in the

separateEngineOwner's Manual. Follow

all instructions and safety rules carefully.

DANGER

GASOLINE IS HIGHLY

FLAMMABLE AND ITS

VAPORSARE EXPLOSIVE.

Followgasolinesafety rules in

this manual (see Section 1)

and in the separate Engine

Owner'sManual.

Failure to follow gasoline

safety instructionscan result

in serious personal injury

and property damage.

Section4: Operation

Startingthe Engine

The following steps describe how to start

and stop the engine. Donot attemptto

engagetines or wheels until you have

read all the operatinginstructionsin this

Section. Alsoreview the salety rules in

Section1: "Safety" and the tiller and

engine controlsinlormation in Section

3: "Features and Controls."

CAUTION

To help prevent serious

personal injury or damage to

equipment:

•Before starting engine, put

both wheels in the WHEEL

DRIVE position. Never have

the wheels in the

FREEWHEEL position when

the engine is running. When

the wheels are in

FREEWHEEL, they do not

hold back the tiller and the

tines could propel the tiller

rapidly backward.

•Before starting engine, put

Forward Clutch Bail (all

Models) and Reverse Clutch

Control in neutral (disen-

gaged) positionsby releasing

levers.

•Never run engine indoors or

in enclosed, poorly venti-

lated areas. Engine exhaust

contains carbon monoxide,

an odorless and deadly gas.

•Avoid engine muffler and

nearby areas. Temperatures

in these areas may exceed

150OF.

1. Completethe "Pre-Start Checklist" on

the previous page.

2. Put the wheels in the WHEELDRIVE

position (see "Wheel Drive Pins" in

Section 3).

3. Put the DepthRegulator Lever in the

"travel" position (lever all the way down)

so that the tines are clear of the ground.

4. Releaseall controls on the tiller.

5. If engine is equipped with a fuel valve,

1t'urn4valve to open position as instructed

in the separate Engine Owner's Manual.

6. Put ignition switch and/or throttle

control lever on engine in "ON," "RUN,"

"FAST"or "START" position as instructed

in the separate Engine Owner's Manual.

7. Chokeor prime engine as instructed in

the separate Engine Owner's Manual.

8. Place one hand on the fuel tank to

stabilize the unit when you pull the starter

handle. Usethe recoil starter rope to start

the engine as instructed in the separate

EngineOwner's Manual. When engine

starts, gradually move choke lever (on

engines so equipped)to "NO CHOKE,"

"CHOKEOFF"or "RUN" position.

WARNING

Hot surfaces can cause severe

burns. Do not touch muffler or

adjacent areas.

9. Usethe "FAST"throttle speed setting

when tilling.

WARNING

Keep away from rotating

tines. Rotating tines will

cause injury.

Stoppingthe Engineand Tiller

1. To stop the wheels and tines, release

the ForwardClutch Bail or the Reverse

Clutch Control -- whichever control is in

use.

2. To stop the engine, put the throttle

control lever on engine in "OFF"or

"STOP" position.

OPERATINGTHE TILLER

The following pages provide guidelines to

using your tiller effectively andsafely in

various gardening applications. Besure

to read "Tilling Tips & Techniques" in this

Section beforeyou actually put the tines

into the soil.

This is a CRT(counter-rotating tine) tiller.

As the wheels pull forward, the tines

rotate backward.

This creates an "uppercut" tine action

which digs deeply, uprooting soil and

weeds. Don't overload the engine, but dig

as deeply as possible on each pass. On

later passes,the wheels may tend to spin

in the soft dirt. Help them along by lifting

up slightly on the handlebar (palm facing

up).

1. Followthe "Pre-Start Checklist" on the

previous page. Besure that the wheels

are in the WHEELDRIVEposition.

2. Put the Depth Regulator Lever in the

"travel" position (lever all the way down)

so that the tines are clear of the ground.

Usethis position when practicing with

your tiller or when moving to or from the

garden. When you are readyto begin

tilling, you must move the Depth

Regulator Lever to the desired depth

setting (see "Tilling Tips & Techniques").

Checkthat the Anti-Reverse Stakeswivels

freelybackandforth. Removeany clogged

material on or around the stake.

Figure 4-2: Use one handto guide tiller

when movingforward.

3. Start the engine and allow it to warm

up. When warm, put throttle control in

fast speedsetting.

4. Forforward motion of wheels and

power to the tines:

(a) Pull the Forward Clutch Bail up and

hold it againstthe handlebar. Release

the bail to stop forward motion of

the wheelsand power to the tines.

(b) As the tiller moves forward, relaxand

letthe wheels pull the unit along while

the tines dig. Walk behindand a

little to one side of the tiller. Usea

light but secure grip with one hand

on the handlebars,keeping your arm

loose. See Figure 4-2.

Section4: Operation

WARNING

Do not push down on the

handlebars to try to make the

tiller till more deeply. This

prevents the wheels from

holding the tiller back and can

allow the tines to rapidly

propel the tiller backward

toward the operator, which

could result in loss of control,

property damage, or personal

injury.

Let the tiller move at its own paceand do

not push down on the handlebarsto try to

dig deeper- this takes weight off the

wheels, cuts traction, andcausesthe tines

to try and propel the tiller.

5. For reverse motion of the wheels and

tines:

(a) Look behind and exercise caution

when operating in reverse. Donot

till while in reverse.

(b) Stop all forward motion before

reversing. Lift the handlebars with

one hand until the tines areoff the

ground and then pull the Reverse

Clutch Control knob out to engage

reverse motion (see Figure4-3). To

stop reversemotion, let go of the

ReverseClutch Control knob.

6. To Turn the Tiller Around:

(a) Practice turning the tiller in a level,

open area. Be very careful to keep

your feet and legs awayfrom the

tines.

(b) To makeaturn, lift the handlebars

until the engine and tines are

balancedover the wheels (Figure

4-4). The tines must be out of the

ground while turning the tiller.

sideways on the handlebar to move

the tiller in the direction of the turn

(Figure 4-5). After completing the

turn, slowly lower the tines into the

soil to resume tilling.

Figure 4-3: Raise tines off groundandlook

behind whenmovingin reverse.

WARNING

Before tilling, contact your

telephone or utilities company

and inquire if underground

equipment or lines are used in

your area. Their representa-

tive will be glad to answer

your questions and tell you if

any of their equipment or lines

are buried underground on

your property.

Turning the Tiller Around

Figure 4-4: Tobegin turn, lift handlebars

until engine and tines are balanced over

wheels. Besure tines are out of ground.

Figure 4-5: Withtiller balanced over

wheels (and tines out of the ground),push

handlebars sidewaysto turn tiller.

Stoppingthe Tiller and Engine

1. To stop the wheels and tines, release

the ForwardClutch Bail or the Reverse

Clutch Control- whichever is engaged.

2. To stop the engine, move the throttle

control lever on engine to "OFF"or

"STOP" position.

Section4: Operation

Tilling Tips& Techniques

Let the tiller dothe work

*While tilling, relax and let the wheels

pull the tiller along while the tines do

the digging. Walk on the side that is

not yet finished (to avoid making foot-

prints in the freshly tilled soil) and

lightly, but securely grip the handlebar

with just one hand. SeeFigure 4-2.

oAvoid the temptation to push down on

the handlebars in an attempt to force

the tiller to dig deeper. Doing so takes

the weight off the powered wheels,

causing them to losetraction. Without

the wheels helping to hold the tiller

back,the tines will attempt to propel

the tiller backward toward the

operator- often causingthe tiller to

skip rapidly across the ground.

Tilling depths

• When preparing the soil, till a fresh

path on each passrather than overlap-

ping passes. This gives the wheels

maximum traction on undisturbed soil.

SeeFigure4-6. Dig as deeply as

possible on each pass without over-

loadingthe engine. Later passescan

be overlapped. (Watering the garden

area afew days prior to tilling will

maketilling easier, as will letting the

newly worked soil set for a day or two

before making a final, deeptilling

pass.)

• When cultivating (breaking up the

surface soil around plantsto help

destroyweeds), adjust the tinesto dig

only 1-1/2" to 2" deep. Using shallow

tilling depths helpspreventinjuryto

plantswhose rootsoftengrow closeto

the surface. If needed,lift up on the

handlebarsslightly to preventthe tines

from digging too deeply. Cultivatingon

a regular basis not only eliminates

weeds,it also loosensandaeratesthe

soil for bettermoistureabsorptionand

faster plantgrowth.

Avoidtilling soggy,wet soil

Tilling wet soil often results in large,

hardclumps of soil that can interfere

with planting. If time permits, wait a day

or two after heavyrains to allow the soil

to dry before tilling. Test soil by

squeezing it into a ball. If it compresses

too easily, it is too wet to till.

Avoidmakingfootprints

Wheneverpossible, walk on the untilled

side of the unit to avoid makingfoot-

prints inyour freshly tilled or cultivated

soil. Footprints cause soil compaction

that can hamper root penetrationand

contribute to soil erosion. They can also

"plant" unwantedweed seeds back into

the freshly tilled ground.

Choosingcorrectwheel

and tine speeds

With experience,you will find the "just

right" tilling depth andtilling speed

combination that is best for your

garden.

Set the engine throttle lever at a high

enough speed to give the engine

adequate power and yet allow it to

operate without overloading it. Fastest

engine speeds may be desirable when

makingfinal passesthrough the

seedbed or when cultivating. Selection

of the correct engine speed, in relation

to the tilling depth, will ensure a suffi-

cient power level to do the job without

causing the engine to labor.

Suggestedtilling patterns

• When preparinga seedbed,go over

the same path twice in the first row,

then make individual passes right next

to each other (see Figure4-6). When

finished in one direction, makesecond

passes at a right angle as shown in

Figure 4-7.

In very hard ground it may take three

or four overlapping passesto thor-

oughly pulverizethe soil. (See Figure

4-8.)

• If the garden size will not permit

lengthwise and then crosswise tilling,

then overlap the first passesby one-

half a tiller width, followed by succes-

sive passesat one-quarter width (see

Figure4-8).

• With planning, you can allow enough

room betweenrows to cultivate (see

Figure4-9). Leaveroom for the hood

width, plus enough extra room for

future plant growth.

Figure4-6

Figure 4-7

Figure4-8

Figure 4-9

Section4: Operation

Tilling Tips & Techniques

Clearing the tines

Dry grass, stringy stalks or tough vines

may becometangled in the tines. Follow

these procedures to help avoid tangling

andto clean the tines, if necessary.

• To reducetangling, set the depth

regulator to maximum depth.

• While tilling, try swaying the handle-

bars from side to side (about 6" to 12").

This "fishtailing" action often clears the

tines of debris.

• If tangling occurs, lift the tines out of

the soil and run the tiller in reverse for

afew feet. This may unwind a good

dealof debris.

• It may be necessaryto removethe

debris by hand (a pocket knife will help

you to cut away the material).

WARNING

Before clearing the tines by

hand, stop the engine, allow

all moving parts to stop and

disconnect the spark plug

wire.

Failure to follow this warning

could result in personal

injury.

Tilling on slopes

If you must garden on a moderate slope,

pleasefollow two very important guide-

lines:

1. Till only on moderate slopes, never on

steep ground where footing is difficult

(review safety rules in the "Safety"

section of this manual).

2. We recommend tilling up and down

slopes rather than terracing. Tilling

vertically on a slope allows maximum

planting area and also leaves room for

cultivating.

IMPORTANT:When tilling on slopes, be

sure the correct oil level is maintained in

the engine (check every one-half hour of

operation). The inclineof the slope will

causethe oil to slant away from its

normal level and this can starve engine

parts of required lubrication. Keepthe

engine oil level at the full point at all

times!

A. Tilling upand downslopes:

• To keepsoil erosion to a minimum, be

sure to add enough organic matter to

the soil so that it has good moisture-

holding texture and try to avoid leaving

footprints or wheel marks.

• When tilling vertically, try to make the

first pass uphill as the tiller digs more

deeply going uphill than it does

downhill. Insoft soil or weeds, you

may haveto lift handlebars slightly

while going uphill.

B. Tilling acrossslopeswithout

usingterraces:

If previously describedtilling methods

aren't practical for you, then you can till

laterallyacross a slope. However, we

don't really recommend this method as

it can create unsure footing and invites

soil erosion.

Section4: Operation

LOADINGAND UNLOADINGTHE

TILLER

WARNING

Loading and unloading the

tiller into or from a vehicle is

potentially hazardous. We

don't recommend doing so

unless absolutely necessary,

as this could result in person-

al injury or property damage.

However, if you must load or

unload the tiller, follow the

guidelines given next.

•Before loading or unloading, stop the

engine, wait for all parts to stop

moving, disconnect the spark plug wire

and let the engine and muffler cool.

•Thetiller is too heavyand bulky to lift

safely by one person. Two or more

peopleshould share the load.

• Usesturdy ramps and manually (engine

shut off) roll the tiller into and out of the

vehicle. Two or more people are needed

to do this.

• Ramps must be strong enough to

support the combined weight of the tiller

and any handlers. The ramps should

provide good traction to prevent

slipping; they should haveside rails to

guide the tiller along the ramps; and

they should havea locking deviceto

secure them to the vehicle.

• The handlers should wear sturdy

footwear that will helpto prevent

slipping.

• Position the loading vehicle so that the

ramp angle is as flat as possible (the

less incline to the ramp,the better).

Turn the vehicle's engine off and apply

its parking brake.

°When going up ramps, stand in the

normal operating position and push the

tiller aheadof you. Havea person at

each side to turn the wheels.

When going down ramps, walk

backward with the tiller following you.

Keepalert for any obstacles behind you.

Position a person at eachwheel to

control the speed of the tiller. Nevergo

down ramps tiller-first, as the tiller could

tip forward.

Usewooden blocks to place on the

downhill side of the wheels if you need

to stop the tiller from rolling down the

ramp. Also, use the blocks to temporar-

ily keepthe tiller in place on the ramps

(if necessary),and to chock the wheels

in placeafter the tiller is in the vehicle.

Whenthe tiller is in the vehicle, prevent

it from rolling by chocking the wheels

with blocks and securely tie the tiller

down.

Maintenance

WARNING

Before inspecting,

cleaning or servicing the

machine, shut off engine,

wait for all moving parts to

come to a complete stop,

disconnect spark plug wire

and move wire away from

spark plug.

Failure to follow these

instructions can result in

serious personal injury or

property damage.

REQUIRED MAINTENANCE SCHEDULE

PROCEDURE

Checkengine oil level

Cleanengine

Check drive belt tension

Check nuts and bolts

Changeengine oil

Lubricate tiller

Serviceengine air cleaner system

Checkgear oil level in

transmission

Checktines for wear

Checkair pressure in tires

(if pneumatic)

Servicespark plug

CheckAnti-Reverse Stake

Before

Each

Use

Every

Hours

Every

Hours

Noted

And every 5

operating hours

* Changemore frequently in dusty or dirty conditions, Changeafter first 2 hours of

break-in operation,

1- Checkafter first 2 hours of break-in operation,

ASeeEngine Owner's Manual for service intervals and instructions.

Section5: Maintenance

WARNING Before inspecting,cleaning or servicing the unit, shut off engine, wait for all

partsto come to a completestop, disconnectspark plug wire and movewire away from spark

plug. Failure to follow these instructions can result in serious personal injury or

propertydamage.

TILLERLUBRICATION

Proper lubrication of the tiller is an

essential part of maintenance. After

every 10 operating hours, oil or grease

the lubrication points shown in Figures

5-1 and 5-1A and described below.

Usea good quality lubricating oil (#30

weight engineoil is suitable) and a quality

generalpurpose grease (with a metal

lubricant, if available).

,, Removewheels, clean wheel shaft (A,

Fig.5-1) and apply thin coating of

grease to the shaft.

,, Greaseback, front andsides of depth

regulator lever (B, Fig. 5-1).

,, Removetines, clean tine shafts (C, Fig.

5-1). Inspect for rust, rough spots or

burrs (look around holes). Fileor sand

smooth, coat ends of shaft with grease.

,, Oil the threads on the handlebar height

adjustment screws and the handlebar

attaching screws (D, Fig. 5-1).

• ShiftingMechanism. Lightlyoil pivot

pointsfor smooth operation(E,Fig.5-1A).

Figure5-1

Figure5-1A

CHECKFOR OIL LEAKS

Before each use,check your tiller for

signs of an oil leak- usually a dirty, oily

accumulation either on the unit or on the

floor where it has been parked.

A little seepagearound a cover or oil seal

is usually not a causefor alarm. However,

if the oil drips overnight then immediate

attention is neededas ignoring a leak can

result in severetransmission damage.

If a cover is leaking, try tightening any

loose screws. If the screws are tight, a

new gasket or oil seal may berequired. If

the leak is from around a shaft and oil

seal,the oil seal probably needsto be

replaced. Seeyour authorizeddealer or

contact the factory for service or advice.

IMPORTANT:Never operate the tiller if

the transmission is low on oil. Checkthe

oil level after every 30 hours of operation

andwhenever there is any oil leakage.

CHECKHARDWARE

Checkfor loose or missing hardware after

every 10 operating hours. Tighten or

replace hardware before using the tiller.

Besure to check the screws underneath

the tiller hood (lift the hood flap) that

securethe transmission cover andthe

depth regulator leverto the transmission.

CHECKTIREPRESSURE(on

machines equipped with

pneumatic tires)

Checkthe air pressure in both tires.

Deflateor inflate both tires evenly from

15-to-20 PSI (pounds per square inch).

Besure that both tires havethe same air

pressure or the unit will tend to pull to

oneside.

NOTE:Your tiller may not beequipped

with pneumatic tires, eliminating the need

for air pressure checks.

TRANSMISSIONGEAROIL SERVICE

Checkthe transmission gear oil level after

every30 hours of operation or whenever

you notice any oil leak. Operating the

tiller when the transmission is low on oil

can result in severe damage.

A. To Checkthe Transmission

Gear Oil Level:

1. Checkthe gearoil levelwhen the trans-

mission is cool. Gear oil will expand in

warm operating temperatures and this

expansionwill provide an incorrect oil

level reading.

2. With the tiller on levelground, adjust

the DepthRegulator Lever up or down to

the notch that makesthe tiller level..

3. Removethe oil fill plug (A, Fig.5-2)

from the transmission housing and look

into the oil fill hole. You will seethe main

drive shaft on one side of the hole.

4. The gear oil level is correct if the gear

oil is approximately half way up the side

of the drive shaft.

5. If the gear oil level is low, add gear oil

as described next. If the gear oil level is

okay, securely replacethe oil fill plug.

IMPORTANT:Do not operatethe tiller if

the gear oil level is low. Doing so will

result in severe damageto the transmis-

sion components.

6. If adding only a few ounces of gear

oil, useAPI rated GL-4 or GL-5 transmis-

sion gear oil having a viscosity of SAE

140, SAE85W-140 or SAE 80W-90. If

refilling anempty transmission, use only

GL-4transmission gear oil having a

viscosity of SAE 85W-140 or SAE 140.

NOTE:Do not use automatic transmission

fluid or engine oil in the transmission.

7. While checking frequently to avoid

overfilling, slowly add gear oil into the oil

fill hole until it reaches the halfway point

on the drive shaft.

8. Securely replacethe oil fill plug.

Section5: Maintenance

WARNING Before inspecting, cleaning or servicingthe unit, shut off engine, wait for all

partsto come to a completestop, disconnectsparkplug wire and move wire away from spark

plug. Failure to follow these instructions can result in serious personal injury or

propertydamage.

B. To Drainthe TransmissionGear Oil:

DANGER

Gasoline is highly flammable

and its vapors explosive. Fol-

low these safety practices to

prevent injury or property

damage from fire orexplosion.

,, Allow the engine and

muffler to cool before

draining the tiller's gasoline

tank.

,, Do not allow open flames,

sparks, matches or smoking

in the area.

,, Wipe away spills and push

tiller away from spilled fuel.

,, Use only an approved fuel

container and store it safely

out of the reach of children.

,, Do not store gasoline where

its vapors could reach an

open flame or spark, or

where ignition sources are

present (such as hot water

and space heaters, furnaces,

clothes dryers, stoves,

electric motors, etc.)

The transmission gear oil does not need

to bechanged unless it has beencontam-

inatedwith dirt, sand or metal particles.

1. Drain gasoline from the fuel tank or

run the engine until the fuel tank is empty.

See"DANGER"statement above.

2. Drain the oil from the engine.

3. Removethe four screws (B, Figure5-2)

and washersfrom the transmission cover

and remove the cover and gasket.

4. Removethe left-side wheel.

5. Tilt the left-side wheel shaft into a

drain panand allow the gear oil to drain

through the top of the transmission.

6. After draining oil, reinstall the wheel,

install a new gasket (do not reuse old

gasket) and screw on transmission cover.

7. Refill transmission using GL-4gear oil

(SAE85W-140 or SAE140).

8. Refill the engine with motor oil and

replenishthe fuel tank with gasoline.

Figure5-2: Removeoil fi// plug(A)tocheck

gearoil/eve/and toaddgearoil. Remove

fourcoverscrews(B) todraingearoil.

TINES

The tines wear with use and they should

be inspected at the beginning of each

tilling seasonand after every30 operating

hours. The tines can be replaced individ-

ually or as a complete set. Referto the

Parts List Section of this manual for tine

identification information.

WARNING

This is a CRT (counter-rotating

tine) tiller and its tines must

be mounted in the direction

shown in Figure 5-3. If

mounted with curves in the

opposite direction, tiller will

dig poorly and be more likely

to run backward.

Failure to comply could result

in personal injury or property

damage.

NOTE:You must first removethe tiller

hood before removing either a single tine

holder or individual tines. Removethe

two screws at the front of the hood and

the two screws at the rear of the hood

and lift off the hood. Be sure to replace

the hood securely after changing a tine or

tine holders.

A. Tine Inspection:

With use,the tines will becomeshorter,

narrower and pointed. Badly worn tines

will result in a loss of tilling depth and

reducedeffectiveness in general, and

specifically when chopping up and

turning under organic matter.

B. Removingand Installing

Tine Assemblies

1. Usea 9/16" socket, 6" extension, a

ratchet,and a 9/16" box end wrench to

loosen the nut (A, Figure 5-3) and screw

(B) that secure the tine holder to the tine

shaft.

2. Usea rubber mallet to tap the tine

holder loose. Slide tine assembly off.

3. RepeatSteps 1 and 2 aboveto remove

the other tine assembly.

4. Installing the tine assembly is simply

the reverseof its removal. First besure

to removeany rust, unevenspots or burrs

from the tine shaft using fine sandpaper.

Then greasethe tine shaft before rein-

stalling the tine assemblies. Be sure all

the cutting edgesface so they will enter

the soil first when the tiller is moving

forward- this meansthe cutting edge on

the top of each tine faces towardthe

operator position. Tighten hardware.

C. Removingand Installing

IndividualTines

1. Usetwo 9/16" box end wrenchesto

removethe two screws (C, Figure 5-3)

and nuts (D) that securethe tine to its

tine holder.

NOTE:If the nuts are rusted, apply pene-

trating oil, then loosen the hardware.

2. When installing individual tines, do so

in the reverse order from which they were

removed. The two sets of inboard tines

are installed so one set faces toward the

transmission andthe other faces away

from it. The single outboardtine set

faces toward the transmission housing.

Also be sure the cutting edge at the top

of each fine faces toward the operator

position. (SeeFigure 5-3.)

Section5: Maintenance

WARNING Before inspecting, cleaning or servicing the unit, shutoff engine, wait for all

partsto come to a completestop, disconnectspark plug wire and move wire away from spark

plug. Failure to follow these instructions can result in serious personal injury or

propertydamage.

TINED

OPERATOR C

POSITION

ENGINE

,'_ DENOTES CUTTING EDGE _3

OF TINE |

Figure5-3: Tines,tineholdersandinstallationhardware.

Figure5-4:Liftbail andchecklengthofClutchBailSpringtocheckforcorrectbelttension

(1-7/8").

CHECKINGAND ADJUSTING

FORWARDDRIVE BELTTENSION

Maintaining correct tension on the

forward drive belt is important to good

tilling performance and long belt life. A

loose belt will slip on the engine and

transmission pulleys and causethe tines

and wheels to slow down -or stop com-

pletely- even though the engine is

running at full speed. A loose belt can

also result in premature belt wear.

If you find you can not bring the Forward

Clutch Bail all the way upto the bottom of

the upper handlebars,you will need to

loosen the belt tension.

Also check the belt for cracks, cuts or

frayed edges and replaceit as soon as

possible.

•Checkbelt tension after the first two

hours of initial operation (new belt).

• Checkbelt tension after every 10

operating hours.

To CheckForwardBelt Tension:

1. Besure that the engine is stopped and

the spark plug wire is disconnectedand

moved awayfrom the spark plug.

2. Loosen nut "C" (Figure 5-4) several

turns so it is about halfway up the

threaded adjustment screw.

3. Lift the Forward Clutch Bail up and

hold it to the bottom of the handlebars.

Measurethe length of the clutch bail

spring (A, Figure 5-4) with a ruler. If the

belt tension is correct, the length of the

coiled portion of the spring should be

approximately 1-7/8". Nut "C" should

then besnugged down againstthe top of

the adjuster (B).

4. If the spring is too short, the belt

tension will betoo loose. If the spring is

too long, the belt tension will be too tight.

5. To adjust the length of the spring,

releasethe Forward Clutch Bail. Thread

the hex nut (C, Fig. 5-4) halfway up the

adjustment screw. Turn the screw inside

the spring (A, Figure 5-4) counterclock-

wise (as viewed from the operator's

position) while holding the adjuster (B)

steadyto increasethe length of the

spring, or turn clockwise (as viewed from

the operator's position) to decreasethe

length of the spring.

NOTE:If you have difficulty holding the

adjuster steady by hand, use a pliers or

wrench on the adjuster. While you turn

the screw, keepthe Forward Clutch Cable

Section5: Maintenance

WARNING Before inspecting, cleaning or servicing the unit, shut off engine, wait for all

partsto cometo a complete stop, disconnectspark plugwire and move wire away from spark

plug. Failure to follow these instructions can result in serious personal injury or

propertydamage.

from turning by gripping the upper end of

the threaded adjuster (B) with pliers.

6. RepeatStep 3 to measure the length

of the clutch bail spring. Oncethe length

is correct, retighten the hex nut against

the top of the adjuster.

ForwardBelt Replacement Information

If the drive belt needsto be replaced,see

your local authorized dealer or phone the

factory as instructed on Page2. Refer to

the Parts List in the back of this manual

for correct components Use only OEM

(Original Equipment Manufacturer) fre-

placement belts. A substitute belt may

not perform satisfactorily. The procedure

requires average mechanicalability and

commonly availabletools.

FORWARDCLUTCH

BAILADJUSTMENT

If the Forward Clutch Bail does not

function properly, first check that the

forward drive belt is adjusted properly

(see "Checking and Adjusting Forward

Drive Belt Tension"). If this fails to

correct the problem, contact the factory

technical service department or your

authorized dealer for service advice.

CHECKINGAND ADJUSTING

REVERSEDRIVE BELTTENSION

Maintaining correct tension on the

reversedrive belt is important to good

performance and long belt life. A loose

belt will slip on the engine andtransmis-

sion pulleys and causethe tines and

wheels to slow down - or stop com-

pletely- even though the engine is

running at full speed. A loose belt can

also result in premature belt wear.

If there is no reverse action when the

ReverseClutch Control knob is pulled

out, then the belt tension is too loose.

When checking belt tension, also check

the belt for cracks, cuts or frayed edges

and replace it as soon as possible.

*Checkbelt tension after the first two

hours of break-in operation (new belt).

- Checkbelt tension after every 10

operating hours.

To CheckReverseBeltTension:

1. Be sure that the engine is stopped and

the spark plug wire is disconnectedand

moved awayfrom the spark plug.

2. Removethe screw in the plastic belt

cover and slide the cover (which is

attachedto the forward clutch cable) out

of the way.

3. Havean assistant pull the Reverse

Clutch Control knob all the way out and

hold it in that position. Measure the

length of the cable wire betweenthe end

of the threaded cable adjuster (A, Figure

5-5) andthe end of the Z-fitting (B) to

which the cable wire is attached.

4. The belt tension is ideal if the cable

wire length measures between 1/8" to

1/4". If the length is less than 1/8" (and if

there is no reverse action when the tiller

is running), then makethe following

adjustments. NOTE:If the length is more

than 1/4", no adjustment is needed,as

long as the reverse action functions

properly.

5. Releasethe ReverseClutch Control

knob. Unthreadthe inner jam nut (C,

Figure5-6) oneto two turns and pull the

threaded cable adjuster (A, Figure5-6) to

the left until the inner jam nut rests

againstthe bracket.

6. Preventthe inner jam nut (C) from

turning and tighten the outer jam nut (D)

againstthe bracket. Preventthe outer

jam nut (D) from turning and tighten the

inner jam nut (C) against the bracket.

7. Measurethe gap by repeating Step 3.

Readjust as neededby repeating Steps 5

and 6.

8. Reinstall the belt cover.

Figure 5-5: Measure cable wire length to

checkfor correctreverse belt tension.

Figure 5-6: Move threaded

adjuster (,4) to left to

increase belt tension.

ReverseBeltReplacementInformation

If the drive belt needsto be replaced,see

your local authorized dealer or phone the

factory as instructed on Page2. Refer to

the Parts List in the back of this manual

for correct components Use only OEM

(Original Equipment Manufacturer) fre-

placement belts. A substitute belt may

not perform satisfactorily. The procedure

requires average mechanicalability and

commonly availabletools.

Section5: Maintenance

WARNING Before inspecting, cleaning or servicing the unit, shutoff engine, wait for all

partsto cometo a completestop, disconnectspark plugwire and movewire away from spark

plug. Failure to follow these instructions can result in serious personal injury or

propertydamage.

ENGINEOIL SERVICE

Checkthe engine oil level before starting

the engine each day and check it after each

5 hours of continuous operation. Running

the engine when it is low on oil will quickly

ruin the engine.

It is recommended that you changethe

motor oil after every 10 hours of operation

and evensooner when operating in

extremely dirty or dusty conditions. Refer

to the separate Engine Owner's Manualfor

detailed service instructions.

A. To Checkthe Engine0il Level:

1. Move the tiller to a level areaand shut

off the engine.

2. Levelthe engine by adjusting the Depth

Regulator Lever. The tines must be in

contact with the ground. Move the Anti-

ReverseStake back if necessary.

3. Cleanthe area around the oil dipstick or

oil fill tube to prevent dirt from falling into

the crankcase.

4. Onengines with an oil fill tube, remove

the filler cap, add oil (if required) until it

reachesthe top of the tube and reinstall the

filler cap.

5. Onengines with a dipstick, remove it,

wipe it clean, and reinstall it finger-tight.

Removethe dipstick and check the reading.

Add oil (if required) to bring the levelto the

FULLmark. Do not overfill.

B. To Changethe Engine0il:

Changethe engine oil as instructed in the

separateEngineOwner's Manual.

ENGINECLEANING

Keepthe engine clean to assure smooth

operation and to prevent damagefrom

overheating. Refer to the separate Engine

Owner's Manualfor specific repair and

cleaning instructions. All inspections and

services must be done with the engine shut

off and cool to the touch.

AIR CLEANERSERVICE

The engine air cleanerfilters dirt and dust

out of the air before it enters the carbure-

tor. Operating the engine with a dirty,

clogged air filter can cause poor perfor-

manceand damageto the engine. Never

operatethe engine without the air cleaner

installed. Inspect and service the air

cleaner more often if operating in very

dusty or dirty conditions.

Servicethe air cleaner as instructed in the

separateEngineOwner's Manual.

SPARKPLUGSERVICE

Inspect and clean or replacethe spark plug

after every 100 operating hours or

annually. Cleanthe plug and set the gap as

described in the separate Engine Owner's

Manual.

In some areas, local law requires using

resistor spark plugs to suppress ignition

signals. If the engine was originally

equippedwith a resistor spark plug, use

the same type for replacement.

SPARKARRESTERSCREENSERVICE

If the engine muffler is equipped with a

spark attester screen, remove and clean it

according to the time intervals and instruc-

tions in the separateEngineOwner's

Manual.

THROTTLELEVERADJUSTMENT

If the engine does not respond to various

throttle lever settings, refer to the separate

EngineOwner's Manualfor service infor-

mation or contact your local authorized

engineservice dealer.

CARBURETOR/GOVERNORCONTROL

ADJUSTMENTS

The carburetor was adjusted at the factory

for best operating speed. Referto the

separateEngineOwner's Manualfor any

adjustment information or seeyour autho-

rized engine service dealer.

The governor controls the maximum

safe operating speed and protects the

engineand all moving parts from

damagecaused by overspeeding. Do

not tamper with the engine governor

settings.

WARNING

Operators shall not tamper

with the engine governor

settings on the machine;

the governor controls the

maximum safe operating

speed to protect the

engine and all moving

parts from damage caused

by overspeed. Authorized

service shall be sought if a

problem exists.

OFFSEASONSTORAGE

When the tiller won't be used for

extendedperiods, prepareit for storage

as follows:

1. Cleanthe tiller and engine.

2. Do routine tiller lubrication and check

for loose parts and hardware.

3. Protect the engine and perform rec-

ommended engine maintenanceby

following the engine storage instruc-

tions found in the separate Engine

Owner's Manual. NOTE:Besure to

protect the fuel lines, carburetor and

fuel tank from gum deposits by

removing fuel or by treating fuel with a

fuel stabilizer (follow engine manufac-

turer's recommendations).

4. Store unit in a clean, dry area.

5. Never store the tiller with fuel in the

fuel tank in an enclosed area where gas

fumes could reach an open flame or

spark, or where ignition sources are

present (space heaters, hot water

heaters,furnaces, etc.).

Section5: Maintenance

TROUBLESHOOTING

Before performing any corrections, refer to the appropriate information in this Manual, or in the Engine Owner's Manual, for the

correct safety precautions and operating or maintenance procedures. Contact your local authorized Engine Service Dealer for

engine service. Contact your local authorized equipment dealer or the factory for all other service problems.

PROBLEM

Enginedoes

notstart.

Enginerunspoorly.

Engineoverheats.

POSSIBLE CAUSE CORRECTION

1. Sparkplug wire disconnected.

2. EngineThrottle ControlLever incorrectlyset.

3. Fueltank empty.

4. Chokecontrol (if so equipped)in incorrect position.

5. Stalegasoline.

6. Dirty air filter(s).

7. Defectiveor incorrectlygappedspark plug.

8. Carburetorout of adjustment.

1. Reconnectwire.

2. Put leverin STARTposition.

3. Addfuel.

4. SeeEngineOwner'sManual.

5. Drain fuel and addfresh fuel.

6. Cleanor replacefilter(s).

7. Inspect sparkplug.

8. SeeEngineServiceDealer.

9. Misadjustedthrottle control cable.

10.Dirt or water in fuel tank.

9. SeeEngineServiceDealer

10. SeeEngineServiceDealer.

Defectiveor incorrectlygappedspark plug. 1.

Dirty air filter(s). 2.

Carburetorout of adjustment. 3.

Stalegasoline. 4.

Dirt or water in fuel tank.

Enginecooling systemclogged.

1. Enginecooling systemclogged.

2. Carburetorout of adjustment.

3. Oil levelis low.

Inspect sparkplug (seeEngineOwner's Manual).

Cleanor replace(seeEngineOwner'sManual).

SeeEngineServiceDealer.

Replacewith fresh gasoline.

SeeEngineServiceDealer.

Cleanair coolingsystem (seeEngineOwner'sManual).

1. Cleanair cooling area (seeEngineOwner's Manual).

2. SeeEngineServiceDealer.

3. Checkoil level(seeEngineOwner'sManual).

Enginedoesnot

shut off. 1. Misadjustedthrottle control or ignition switch. 1. SeeEngineOwner'sManualor EngineServiceDealer.

Wheels andTines 1. Improper use of controls. 1. ReviewSections3 and 4.

will notturn. 2. Worn,broken, or misadjusteddrivebelt(s). 2. See"CheckingDriveBeltTension," Section5.

3. Internaltransmission wear or damage. 3 Contactlocaldealeror the factory.

4. Bolt loose in transmission pulley. 4. Tightenbolt.

Tinesturn, but 1. WheelDrive Pinsnot in WHEELDRIVE. 1. See"Wheel DrivePins" in Section3.

wheels don't. 2. Internaltransmission wear or damage. 2. ContactlocalDealeror the Factory.

WheelsTurn, but 1. Tine holdermounting hardwaremissing. 1. Replacehardware.

Tines Don't. 2. Internaltransmission wear or damage. 2. ContactlocalDealeror the Factory.

1. Worntines.

2. Improper DepthRegulatorsetting.

3. Incorrectthrottle setting.

4. ForwardDrive Belt slipping.

Poortilling

performance.

1. See"Tines" (Section5).

2. See "Tilling Tips & Techniques,"Section4.

3. SeeSection4.

4. See"CheckingForwardDriveBelt Tension,"Section5.

PartsList

7_\

2 20

7 21

MODELS644H & 645A

REF

NO.

PARTNO. DESCRIPTION

1185469

710-0597

710-0599

710-0874

1186331

712-0291

712-3004A

712-3009

736-0119

GW-55013-1

GW-55013-2

GW-55015

GW-55018

686-04029

GW-55088

GW-9384

GW-9534

710-04048

618-04046

786-04191

1916570

710-3073

1916771

1107382

710-3025

1916708

1916707

Spirol Pin

HexHd. Screw, 1/4-20 x 1

Screw, Self-Tapping,I/4-20 x 1/2

HexHd. Screw, 5/16-18 x 1-1/4

HexHd. Screw, 5/16-18 x 1.0

HexLock Nut, 1/4-20

HexFlangeLock Nut, 5/16-18

HexNut, 5/16-18

Lock Washer, 5/16

Hood Bracket,Left Hand

Hood Bracket,Right Hand

Drag Bar

Depth Regulator Lever

Tine HoodAssembly

Bushing

Spring, Depth Regulator

Spacer

HexHd. FlangeScrew, 5/16-18 x 1

Transmission Assembly (CRT)

FlapStop Bracket

ReverseStop Arm

HexScrew, 5/16-18 x 2.25

Spacer, .462 x .328 x 1.63

FlatWasher, 5/16

HexScrew, 5/16-18 x .625

Hood Support Bracket

ChannelSupport Bracket

MODELS644H & 645A

REF

NO.

PARTNO. DESCRIPTION

1916719

1916755

747-04210

1918745

710-0599

710-3008

712-3009

786-04188

GW-55043

786-04200

GW-55044

GW-9855

725-0157

736-3050

732-04040

732-04185

710-0106

710-0216

710-0805

712-0121

712-0291

712-3000

736-0119

OableAssembly, ReverseOlutch

Upper Handlebar

Bail, Forward Olutch

OableAssembly, Forward Olutch

Screw, Self-Tapping,I/4-20 x 1/2

Screw, Hex,5/16-18 x 3/4

HexLock Nut, 5/16-18

Handlebar Support

Lower Handlebar

Panel

Tab, Oonduit Mount

Screw, #10-24 x 2

OableTie

FlatWasher, 3/8

Bracket, ReverseOlutch Oable

Spring, Forward Olutch

HexHd. Screw, 1/4-20 x 1-1/4

Screw, Hex,3/8-16 x 3/4

Screw, Hex,5/16-18 x 1-1/2

HexNut, #10-24

HexLock Nut, 1/4-20

HexNut, 3/8-16

Lock Washer, 5/16

REF

NO.

PART NO.

1918749

710-0395

712-0267

736-0119

DESCRIPTION

Bumper

HexScrew, 5/16-18 x 2-1/4, Gr5

Nut, Hex,5/16-18

Lock Washer, 5/16

MODELS644H & 645A

REF

NO.

1 GW-9517

2 GW-1714

3 GW-50043

4 711-04110

5 GW-1224-1"

GW-1224-2"

GW-1224-3"

GW-1224-4"

-- GW-13250

PARTNO. DESCRIPTION

Snap Ring

Bearing,Tapered Roller (with race)

Support Washer, Rear

Drive Shaft (ORT)

Shim, RearBearing Oap,.010"thick

Shim, same as above,except .030"thick

Shim, same as above,except .005"thick

Shim, same as above,except .062"thick

Shim Set (Incl. the following shims:

two #1224-1, two 1224-2 & one#1224-4)

*Useas required to obtain between .005" and .015" allowable end-play.

MODELS644H & 645A

FRONT

REF

NO.

PARTNO. DESCRIPTION

GW-9512

1909950

GW-1166-1*

GW-1166-2"

GW-1166-3"

GW-1166-4"

GW-1166-5"

GW-1086

711-04092

GW-9305

GW-1132-2

1904278

711-04078

GW-1104

1916542

Retainer,Snap Ring, "E" Type

Retainer,Snap Ring

Shim, 0.062" thick

Shim, 0.030" thick

Shim, 0.015" thick

Shim, 0.010" thick

Shim, 0.005" thick

Bronze Bushing

Wheel Shaft (CRT)

Key, Hi-Pro, 1/4 x 1

Spacer

Worm Gear,Wheel Shaft

Tiller Shaft

Wood ruff Key

Worm Gear,Tiller Shaft

Useas required to obtain between .005" and .030" allowable end-play.

MODELS644H & 645A

*Included with transmission when purchased as an assembly only.

Removeand discard when installing the transmission on tiller.

REF PART NO.

NO.

1 GW-9727

2 710-04049

3 736-0119

4 1918377

5 1916641

6 GW-50032

7 721-04030

DESCRIPTION REF

NO.

Plug,Transmission Oil Fill 8

HexHd. FlangeScrew,5/16-18 x 5i8,Gr. 5 9

Lock Washer, 5/16 10

RearCover,Transmission 11

Front Cover,Transmission 12

Gasket, Housing Cover 13

Oil Seal,Drive Shaft 14

PARTNO.

721-04031

619-04013

721-04036

736-3008"

718-04008

710-04048

710-3008

DESCRIPTION

Oil Seal,Wheel Shaft

Transmission Housing Assembly

Oil Seal,Tine Shaft

Washer, Flat, .344 x .750 x .120

RearBearingCap

Hex Hd. FlangeScrew, 5/16-18 x 1

Hex Hd. FlangeScrew, 5/16-18 x 3/4

Hold TinesWith Cutting Edgeat the TOP

of eachtine facing TOWARDYou

10 8

MODELS644H & 645A

FRONT/

FORWARD

WHEELSHAFT

REF

NO.

ENGINE

'_ ENOTES CUTTING EDGE

OF TINE

PART NO.

710-3008

1817060

712-3009

710-3096

1817059

1916702

1916703

1917487

DESCRIPTION

HexHd. Screw,5/16-18 x 3/4, Grade5

Single Tine - Right Hand

HexLock Nut, 5/16-18

HexHd. Screw, 3/8-16 x 2

Single Tine - Left Hand

LHTine Holder

RHTine Holder

Wheel & Tire Ass'y-- Left/Right Side

REF

NO.

PART NO.

GW-9380

GW-9338

712-3000

642-04005

642-04006

DESCRIPTION

Clevis Pin, .312"x 1-3/4"

Hair Pin Cotter

HexLock Nut, 3/8-16

RH TineAssembly (incl. two RHtines and

one LHtine assembledto RHtine holder)

LH Tine Assembly (incl. two LHtines and

one RHtine assembledto LHtine holder)

MODELS644H & 645A

,3O

MODELS644H & 645A

REF

NO.

PARTNO. DESCRIPTION

736-0159

1108841

619-04016

1916532

1916535

1916652

1916657

1916658

1916660

1916724

1916725

1916726

1916794

1916795

1917326

1917746

1918731

1918744

710-0117

710-0237

710-0376

710-04049

710-0520

710-0599

710-3103

712-3000

712-3009

736-0119

736-3050

736-3090

736-0452

710-0459A

GW-50027

GW-55034

GW-55049

GW-9090

GW-9301

736-3078

GW-9944

710-0395

FlatWasher, 5/16

Key, 3/16"x 1-1/2"

Pulley, Engine Drive

Transmission Pulley

Pulley, ReverseIdler

Guard, Belts/Pulleys

Forward Drive Belt

ReverseDrive Belt

Belt Cover

ReverseReturn Spring

Belt Guide

Forward Belt Guide

Engine Bracket, Left

Engine Bracket, Right

Bracket, Belt Cover

Shoulder Washer

ReverseIdler Arm

Forward Idler Lever

HexHd. Screw, 5/16-24 x 1

HexHd. Screw, 5/16-24 x 5/8

HexHd. Screw, 5/16-18 x 1

HexHd. Screw, 5/16-18 x 5/8

HexHd. Screw, 3/8-16 x 1-1/2

Screw, Self-Tapping, 1/4-20 x 1/2

HexHd. Screw, 5/16-18 x 2

Lock Nut, 3/8-16

Lock Nut, 5/16-18

Lock Washer, 5/16

FlatWasher, 3/8

FlatWasher

BellWasher

HexHd. Screw, 3/8-24 x 1.5, GR5

Support Washer

Forward Return Spring

Bracket,Cable Mounting

Forward Idler Pulley

Key, 3/16" x 1"

FlatWasher

BellevilleWasher

HexScrew, 5/16-18 x 2.25 Gr5

TROY-BILT TILLER LIFETIME LIMITED WARRANTY

WHAT PRODUCT

IS COVERED

WHAT IS COVERED

BY THIS WARRANTY

WHAT IS NOT

COVERED BY THIS

WARRANTY

All Troy-Bilt branded rear tine walk-behind tillers with gear drive transmissions,

This warranty begins on the date of purchase and is warranted by Troy-Bilt LLC for the life of the

tiller, to the original purchaser only,

Troy-Bilt LLC will, at its option, repair or replace any part found to be defective in material or

workmanship without charge for parts and labor

This limited lifetime warranty also applies to non-powered attachments and accessories,

Powered attachments and accessories are warranted separately by their manufacturers, Refer

to the applicable manufacturer's warranty on these items for terms and conditions,

This warranty does not apply to parts that have been damaged by accident, alteration, misuse,

abuse, neglect, improper maintenance, vandalism, theft, fire, water, or damage because of peril

or other natural disaster,

The following items are not covered after the first year of this residential use limited warranty:

belts, batteries, bushings, seals, tines, tires, wheels, paint, appearance items, and similar items

that are normally replaced through periodic maintenance,

Charges for pick-up, delivery, and service calls are not covered by this warranty,

Service completed by someone other than an authorized service dealer is not covered by this

warranty,

Parts that are not genuine Troy-Bilt LLC service parts are not covered by this warranty,

The engine is warranted separately by the engine manufacturer, Refer to the engine

manufacturer's warranty for terms and conditions,

LIMITED

COMMERCIAL

USE WARRANTY

If used for commercial, institutional, industrial, rental, or demonstrator purposes, the warranty

on the tiller is limited in duration to 90 days from the date of purchase,

This warranty does not apply to parts that have been damaged by accident, alteration, misuse,

abuse, neglect, improper maintenance, vandalism, theft, fire, water, or damage because of

peril or other natural disaster,

HOW TO OBTAIN

SERVICE

Warranty service is available, with proof of purchase, through your local authorized service

dealer. To locate a dealer in your area, consult your Yellow Pages, or contact Troy-Bilt LLC at

P,O. Box 361131, Cleveland, Ohio 44136-0019, 1-800-520-5520, or log on to our Web site at

www,troybilt,com,

The provisions set forth in this warranty provide the sole and exclusive remedy arising from the sale. Troy-Bilt LLC shall

not be liable for any incidental or consequential damage or expense of any kind, including but not limited to cost of

equipment rental, loss of profits, or costs of hiring services to perform tasks normally performed by the equipment.

Any implied warranties, including any implied warranty of merchantability or fitness for a particular purpose, shall be limited

in duration to the period of ownership by the original purchaser (and a maximum of 90 days from the date of sale if the tiller is

purchased for commercial or other non-residential use),

Some states do not allow the exclusion or limitation of incidental or consequential damages, or limitations on how long an

implied warranty lasts, so the above exclusions or limitations may not apply to you,

This limited warranty gives you specific legal rights, and you may also have other rights which vary from state to state,

For customer assistance, contact your nearest authorized dealer, or contact us at:

TROY-BILT LLC, P.O. Box 361131, Cleveland, Ohio 44136-0019, 1-800-520-5520

Troy-Bilt 21A-644H766 Troybilt Tiller

Product's Documents

Operator's Manual

Specifications

Troy-Bilt 21A-644H766 Questions and Answers

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