60” Mid Mount Mower Deck
Model MM60RS
769-03187A
(8/11)
Yanmar America Corporation
101 International Parkway
Adairsville, GA 30103
Operator’s
Manual
Printed In USA
Mfd by MTD
Table of Contents
Important Safe Operation Practices ............................................................................................................... 3
Safety Labels .................................................................................................................................................. 6
To the Dealer and Owner ............................................................................................................................... 8
Contents ......................................................................................................................................................... 8
Installation, Mowing and Removal .................................................................................................................. 9
Adjustments .................................................................................................................................................... 17
Deck Maintenance .......................................................................................................................................... 20
Parts List ......................................................................................................................................................... 24
Warranty .......................................................................................................................................................... 31
Finding Model Number
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. The information on the model plate is very important if you need help from our Customer
Support Department or an authorized dealer.
• You can locate the model number by looking on the top surface of the deck assembly. A sample model plate is shown below. For
future reference, please copy the model number and the serial number of the equipment in the space below.
Calling Customer Support
If you have difficulty with this mower deck; have any questions regarding the controls, operation or maintenance of this equipment; or
desire additional information not found in this manual, contact your nearest authorized Yanmar dealer. If you need assistance in locating
a dealer in your area, contact the Customer Dealer Referral Line. Call Call 1-855-416-7091 to reach the Customer Dealer Referral Line.
Please have your tractor’s model number and serial number, and the mower deck model number, ready when you call. See your tractor
operator’s manual to locate this information. For more details about your unit, visit our website at www.yanmar.com. For warranty informa-
tion, please refer to the Yanmar Limited Warranty included with your tractor.
XXXXXXXXXX
59A40XXX727
MODEL NUMBER SERIAL NUMBER
CUSTOMER SUPPORT
1-855-416-7091
MM60RS
_____________________
MFG BY MTDPRODUCTS, Inc Valley City, OH 44280
2
WARNING! This symbol points out important safety
instructions which, if not followed, could endanger the
personal safety and/or property of yourself and
others. Read and follow all instructions in this manual
before attempting to operate this machine. Failure to
comply with these instructions may result in personal
injury. When you see this symbol—HEED ITS
WARNING.
WARNING! This mower deck was built to be operated
according to the rules for safe operation in this
manual. As with any type of power equipment,
carelessness or error on the part of the operator can
result in injury. This mower deck is capable of
amputating hands and feet or throwing objects.
Failure to observe the following safety instructions
could result in serious injury or death.
GENERAL OPERATION
1. Read, understand and follow all instructions in the manual and on
the machine before starting. Keep this manual in a safe place
for future and regular reference and for ordering replacement
parts
2. Only allow responsible individuals familiar with the instructions to
operate the machine. Know the controls and how to stop the
machine quickly.
3. Do not put hands or feet under the cutting deck or near rotating
parts.
4. Clear the area of objects such as rocks, toys, wire, etc. which could
be picked up and thrown by the blades. A small object may
have been overlooked and could be accidentally thrown by the
mower in any direction and cause injury to you or a bystander.
To help avoid a thrown objects injury, keep children, animals,
bystanders and helpers at least 75 feet from the mower while
it is in operation. Always wear safety glasses with side shields
or safety goggles during operation or while performing an
adjustment or repair, to protect eyes from foreign objects. Stop
the blades when crossing gravel drives, walks or roads.
5. Be sure the area is clear of other people before mowing. Stop
machine if anyone enters the area.
6. Never carry passengers.
7. Disengage the blades before shifting into reverse and backing up.
Always look down and behind before and while backing.
8. Be aware of the mower and attachment discharge direction and do
not point it at anyone. Do not operate the mower without either
the entire grass catcher or the chute guard in place.
9. Slow down before turning. Operate the machine smoothly. Avoid
erratic operation and excessive speed.
10. Never leave a running machine unattended. Always turn off the
blades, place the transmission in neutral, set the parking brake,
stop the engine and remove key before leaving the area.
11. Turn off blades when not mowing.
12. Stop the engine and wait until the blades come to a complete stop
before (a) removing the grass catcher or unclogging chute,
or (b) making any repairs, adjusting or removing any grass or
debris.
13. Mow only in daylight or good artificial light.
14. Do not operate the machine while under the influence of alcohol or
drugs.
15. Watch for traffic when operating near or crossing roadways.
16. Use extra care when loading or unloading the machine onto a
trailer or truck. Be sure truck is wide enough and on a firm,
level surface. Use loading ramps and attach them properly to
the truck bed. Use a heavy-duty trailer to transport the tractor.
17. Never make a cutting height adjustment while the engine is running
if the operator must dismount to do so.
18. Wear sturdy, rough-soled work shoes and close-fitting slacks and
shirts. Do not wear loose fitting clothes or jewelry. They can
be caught in moving parts. Never operate a unit in bare feet,
sandals or sneakers.
19. Check overhead clearance carefully before driving under power
lines, wires, bridges or low hanging tree branches, before
entering or leaving buildings, or in any other situation where
the operator and/or roll bar may be struck, which could result in
serious injury.
20. Disengage the power take-off, set the parking brake and shift into
neutral before attempting to start the engine.
21. Your mower is designed to cut normal residential grass. Do not
attempt to mow through unusually tall, dry grass (e.g. pasture)
or piles of dry leaves. Debris may build up on the mower deck,
presenting a potential fire hazard.
22. Use only accessories approved for the machine by Yanmar. Read,
understand and follow all instructions provided with approved
accessories.
3
SECTION 1: SAFE OPERATION PRACTICES
SLOPE OPERATION
1. Slopes are a major factor related to loss of control and tip-over
accidents, which can result in severe injury or death. All slopes
require extra caution. If you cannot back up the slope or if you
feel uneasy on it, do not mow it.
2. For your safety, use the slope gauge (provided in tractor Opera-
tor’s Manual) to measure slopes before operating the unit on a
sloped or hilly area. If the slope is greater than 15 degrees, as
shown by the slope gauge, do not operate the unit on that area
or serious injury could result.
DO:
Mow up and down slopes, not across.
Remove obstacles such as rocks, limbs, etc.
Watch for holes, ruts or bumps. Uneven terrain could overturn the
machine. Tall grass can hide obstacles.
Use slow speeds. Choose a low enough gear so that you will not
have to stop or shift while on the slope. Always keep the machine
in gear when going down slopes to take advantage of engine
braking action.
Follow the manufacturer’s recommendations for wheel weights or
counterweights to improve stability.
Use extra care with grass catchers or other attachments. These
can change the stability of the machine.
Keep all movement on the slopes slow and gradual. Do not make
sudden changes in speed or direction. Rapid engagement or
braking could cause the front of the machine to lift and rapidly flip
over backwards which could cause serious injury.
Avoid starting or stopping on a slope. If the tires lose traction,
disengage the blades and proceed slowly straight down the slope.
DO NOT:
DO NOT turn on slopes unless absolutely necessary. If necessary,
turn slowly and gradually across and down slope, if possible.
DO NOT mow near drop-offs, ditches or embankments. The mower
could suddenly turn over if a wheel is over the edge of a cliff or
ditch, or if an edge caves in.
DO NOT mow on wet grass. Reduced traction could cause sliding.
DO NOT try to stabilize the machine by putting your foot on the
ground.
CHILDREN
Tragic accidents can occur if the operator is not alert to the pres-
ence of children. Children are often attracted to the machine and
the mowing activity. Never assume that children will remain where
you last saw them.
1. Keep children out of the mowing area and in watchful care of an
adult other than the operator.
2. Be alert and turn the machine off if children enter the area.
3. Before and when backing up, look behind and down for small
children.
4. Never carry children, even with the blades off. They may fall off
and be seriously injured or may interfere with safe machine
operation.
5. Never allow children under 14 years old to operate the machine.
Children 14 years and older should only operate the machine
under close parental supervision and proper instruction.
6. Use extra care when approaching blind corners, shrubs, trees or
other objects that may obscure your vision of a child or other
hazard.
7. Remove the key when the machine is left unattended to prevent
unauthorized operation.
SERVICE
1. Use extreme care in handling gasoline and other fuels. They are
extremely flammable and the vapors are explosive.
a. Use only an approved container.
b. Never remove fuel cap or add fuel with the engine hot or
running. Allow the engine to cool at least two minutes
before refueling.
c. Replace the fuel cap securely and wipe off any spilled fuel
before starting the engine as it may cause a fire or
explosion.
d. Extinguish all cigarettes, cigars, pipes and other sources of
ignition.
e. Never refuel the machine indoors because fuel vapors will
accumulate in the area.
f. Never store the fuel container or machine inside where there
is an open flame or spark, such as a gas hot water
heater, space heater or furnace.
2. Never run a machine inside a closed area. Engine exhaust fumes
can be lethal.
3. To reduce fire hazard, keep the machine free of grass, leaves or
other debris build-up. Clean up oil or fuel spillage. Allow the
machine to cool at least 5 minutes before storing.
4. Before cleaning, repairing or inspecting, stop the engine and
remove key. Make certain the blades and all moving parts have
stopped.
5. Frequently check all nuts, bolts and screws for proper tightness to
ensure the equipment is in safe working condition, especially
the blade nuts. Also visually inspect blades for damage (e.g.,
excessive wear, bent, cracked). Replace only with blades that
meet original equipment specifications.
6. Never tamper with safety devices. Check their proper operation
regularly. Use all guards as instructed in this manual.
7. After striking a foreign object, stop the engine and thoroughly
inspect the mower for any damage. Repair the damage before
restarting and operating the mower.
8. Mower blades are sharp and can cut. Wrap the blades or wear
gloves, and use extra caution when servicing blades.
9. Check brake operation frequently. Adjust and service as required.
10. Muffler and engine become hot during operation and can cause a
burn. Allow to cool down before touching.
11. Do not change the engine governor settings or overspeed the
engine. Excessive engine speeds are extremely dangerous.
12. If the machine should begin to vibrate abnormally, stop the engine
4
and check immediately for the cause. Abnormal vibration is a
warning of trouble.
13. Observe proper disposal laws and regulations. Improper disposal
of fluids and materials can harm the environment and the
ecology.
a. Prior to disposal, cont act your local Environmental Protection
Agency to determine the proper method for disposing of
the waste. Recycling centers are established to properly
dispose of materials in an environmentally safe fashion.
b. Use proper containers when draining fluids. Do not use food
or beverage containers that may mislead someone into
drinking from them. Properly dispose of the containers
immediately following the draining of fluids.
c. DO NOT pour oil or other fluids into the ground, down a drain
or into a stream, pond, lake, or other body of water.
WARNING! YOUR RESPONSIBILITY
Restrict the use of this power machine to persons who read, understand and follow the warnings and instructions in this
manual and on the machine
Observe Environmental Protection Agency regulations
when disposing of oil, fuel, coolant, brake fluid, filters,
batteries, tires and other harmful waste.
14. We do not recommend the use of a pressure washer or garden
hose to clean your unit. They may cause damage to electrical
components; spindles; pulleys; bearings; or the engine. The
use of water will result in shortened life and reduce service-
ability.
5
6
SAFETY SYMBOLS
This page depicts and describes safety symbols that may appear on this product. Read, understand, and follow all instructions on the
machine before attempting to assemble and operate.
Symbol Description
READ THE OPERATOR’S MANUAL(S)
Read, understand, and follow all instructions in the manual(s) before attempting to
assemble and operate
WARNING— ROTATING BLADES
Do not put hands or feet near rotating parts or under the cutting deck. Contact with the
blade(s) can amputate hands and feet.
WARNING—THROWN OBJECTS
This machine may pick up and throw and objects which can cause serious personal injury.
WARNING— SLOPE OPERATION
Do not operate this machine on a slope greater than 15 degrees.
WARNING— SLOPE OPERATION
Do not operate this machine on a slope greater than 11 degrees.
WARNING—THROWN OBJECTS
This machine may pick up and throw and objects which can cause serious personal injury.
DANGER — ROTATING BLADES
To reduce the risk of injury, keep hands and feet away. Do not operate unless discharge cover
or grass catcher is in its proper place. If damaged, replace immediately.
WARNING— ROTATING BLADES
Keep hands out of inlet and discharge openings while machine is running. There are rotating
blades inside
WARNING— ROTATING AUGER
Do not put hands or feet near rotating parts, in the auger/impeller housing or chute
assembly. Contact with the rotating parts can amputate hands and feet.
BYSTANDERS
Keep bystanders, helpers, children and pets at least 75 feet from the machine while it is in
operation.
The initial assembly and proper installation of this attachment is the responsibility of the Yanmar dealer. Read the instructions and safety
precautions found in this manual carefully.
Figure 1
1. RH Sub-frame Assembly ................. N/A 1 pc.
2. LH Sub-frame Assembly ..................... N/A 1 pc.
3. Rear Lift Rod Assembly ...................... N/A 2 pc.
(May have been factory installed)
4. Hex Cap Screw M16-20 x 35 ............... 710-04697 2 pc.
5. Hex Cap Screw, M16-2.0 x 60 ............ 710-04700 2 pc.
6. Hex Cap Screw, 5/8-11 x 2.5 .............. 710-04129 2 pc.
7. Flat Washer, .64 x 1.12 x .125 .............. 736-0366 4 pc.
8. Hex Lock Nut, 5/8-11 .......................... 712-3016 2 pc.
9. Spacer 1.25 OD x .625 ....................... 750-04877 2 pc.
10. Spacer 1.25 OD x 1.25 ........................ 750-04878A 2 pc.
SECTION 4: TO THE DEALER
SECTION 5: TO THE OWNER
The deck attachment components are listed below along with their part numbers. Assemblies are made up of more than one part and do
not have a part number. Before beginning installation, lay all components out on a flat surface to assure everything is present. Throughout
the manual the parts in the hardware pack will be identified by name, followed by their callout number in parenthesis, to aid in installation.
This Operator’s Manual is an important part of your new Mid Mount 60” Mower Deck. Contained in this manual are instructions covering
installation, safe operation, and maintenance of the Model MM60RS 60 inch mower deck. Please read and understand what it says.
The Model MM60RS Mid Mount 60” Mower Deck is designed for use ONLY with certain Yanmar tractor models. It will NOT fit nor operate
safely or properly on or with any other tractor.
References to LEFT and RIGHT indicate the left and right sides of the tractor when facing forward in the operator’s position. Reference to
the FRONT indicates the grille end; to the REAR the drawbar end.
SECTION 6: CONTENTS
11. RH Loader Adapter Bracket ................. 603-04441 2 pc.
12. LH Loader Adapter Bracket ................. 603-04440 2 pc.
13. RH Lift Bracket Assembly ................... N/A 1 pc.
14. LH Lift Bracket Assembly .................... N/A 1 pc.
15. Spacer .625 ID x 4.95 Lg ..................... 750-04858 2 pc.
16. Nozzle Adapter ................................... 721-04041 1 pc.
17. Mid PTO Cover ................................... 703-06201 1 pc.
18. Hx Cp Scrw - May be factory installed .. 710-04706 2 pc.
19. Flat Washer - May be factory installed ..736-0290 2 pc.
20. Hx Lck Nut - May be factory installed ...712-0261 2 pc.
Not Shown - Complete Deck Assembly ....... 1 pc.
2
3
4
5
6
8
9
10
11
12
13
14
7
15
16
If Not Factory
Installed
17
1
18
19
20
3
7
SECTION 7: INSTALLATION, MOWING AND REMOVAL
Unpacking the Mower Deck
Move the tractor and mower deck to a firm flat area large enough to
accommodate both. Allow enough room to slide the deck under-
neath the tractor from the right side.
To uncrate the mower deck and all components, refer to Figure 1
and proceed as follows:
• Carefully remove the top of the shipping crate. Cut the ties and
remove the sub-frame assemblies from the packaging shelf.
Set the sub-frame assemblies aside.
• Support the sub-frame shelf and carefully remove the sides of
the crate. Cut or fold down the plastic bag.
• Remove the hardware pack from the shipping pallet. Check the
contents of the hardware pack against the list on page 8.
NOTE: Some hardware pack components may have been stored
in their mating parts for shipping purposes, and may not be in the
hardware pack.
• Carefully remove and discard any banding wire, strapping, or
tie straps securing the components to the shipping pallet.
• Carefully roll the deck off of the shipping pallet and remove
any ties and padding material.
PREPARING SUB-FRAME
ASSEMBLY
Install Rear Lift Rods
(if not already assembled)
NOTE: The rear lift rod may have been connected to the rear lift
arm of the each sub-frame assembly at the factory. If the rods are
connected, disregard the following instructions and skip to the next
subsection.
• Insert the hex screw (18) through the hole at the top of the
sub-frame rear lift arm on either the RH or LH sub-frame
assemblies (1 or 2, Figure 1). Slide the flat washer (19) onto
the screw.
• Looking at either of the rear lift rod assemblies, locate the flat-
tened areas on the rod near the RH threaded end of the rod.
Position the rear lift rod assembly (3, See inset box of Figure
1) so that the flats of the rod, and RH threaded ball joint, are
toward the rear of the sub-frame assembly. Refer to Figure 2.
• Position the LH threaded ball joint at the other end of the rear
lift rod assembly between the top of the sub-frame rear lift arm
and the sub-frame rail. See Figure 2.
• Insert the hex screw through the ball joint and fasten with the
hex lock nut (20). Tighten the hex lock nut until almost snug
against the ball joint. Do not overtighten. Refer to Figure 2.
Repeat the above procedure to install the other rear lift rod
assembly on the other sub-frame assembly.
Rear Lift Rod
Sub-Frame Rear
Lift Arm
Hex Screw
Flat Washer
Lock Nut
Rod Flats
RH Threaded
Ball Joint
Figure 2
8
Changing the Sub-Frame Mounting Brackets
If a front loader is installed, or to be installed, on the tractor, the
sub-frame mounting brackets must be removed from the sub-frame
and replaced with the loader adapter brackets. If no front loader is
installed, or to be installed, skip to the following sub section.
• Remove the hex screw fastening the LH front sub-frame link
on the sub-frame pivot shaft, and slide the sub-frame link off of
the shaft. Refer to Figure 3.
• Withdraw the pivot shaft from the bearings in the sub-frame
rail. See Figure 3.
• Remove the four hex flange lock nuts and screws securing the
LH sub-frame mounting bracket to the sub-frame rail to remove
the mounting bracket. See Figure 3.
• Position the LH loader adapter bracket (12) to align its four
holes with the four holes in the plate on the sub-frame rail.
Refer to Figure 3. Insert the four hex screws and thread the
hex flange lock nuts onto the screws. Tighten the flange lock
nuts until almost snug. Do not fully tighten the fasteners.
• Insert the sub-frame pivot shaft through the sub-frame rail
and slide the LH front sub-frame link onto the end of the shaft.
Align the holes in the sub-frame link with the hole in the pivot
shaft and insert the hex screw removed earlier. Fully tighten
the hex screw. Refer to Figure 3.
• Repeat the above procedure to install the RH loader adapter
bracket (11) onto the RH sub-frame assembly (16).
• If not already installed, install the RH and LH loader mounts on
the tractor now by following the instructions in the front loader
operator’s manual.
PREPARING THE TRACTOR
WARNING! Engage the tractor parking brake, stop
the tractor engine and remove the key to safely install
the mower deck.
Installing Sub-Frame and
Lift Bracket Assemblies
NOTE: The RH and LH sub-frame assemblies can be installed
without removing the rear wheels. But limited space to remove
and reinstall fasteners makes it more difficult and increases the
possibility of an improper installation. It is recommended that the
respective rear wheel be removed from that side of the tractor when
installing the RH or LH sub-frame assembly.
WARNING! When raising any part of the tractor from
the ground, use appropriate jack stands to support the
tractor. Do not work on the tractor when supported
only by a lifting jack.
Installing RH Sub-Frame and RH Lift Bracket Assemblies
• Use a jack to raise the right rear of the tractor so that the tire is
off of the ground. Position a jack stand to support the tractor.
Remove the right rear tire from the tractor and roll aside.
• If a lower hitch link sway spring is installed between the two lift
links of the 3-point hitch, unhook the chain from the links.
• Remove the klik pin from the end of lower hitch link pin. While
supporting the sway chain clevis links, slide the link pin inward
(to the left) to disengage the pin from the two clevis links and
the hitch link pin support bracket. See Figure 4.
• Continue to slide the hitch link pin to the left to remove the
spacers and disengage the RH lower hitch link. See Figure 4.
• Remove the four screws (3 short and 1 long) securing the hitch
link pin support bracket to the tractor’s RH rear axle housing
and remove the support bracket. Retain the four screws and
discard (or store) the bracket and spacers.
Hex Screw
LH Sub-Frame
Front Lift Arm
LH Sub-Frame
Mtg. Bracket
Hex Screw
LH Loader
Adapter Bracket
Flange Lock Nut
LH Sub-Frame Shown
Sub-Frame
Pivot Shaft
Figure 3
RH Lower
Hitch Link
Klik Pin
Sway Chain
Clevis Link
Hitch Link Pin
Support Brkt.
Hex Screws
Lower Hitch
Link Pin
Spacer
Figure 4
9
• Position the RH sub-frame assembly (1) along the right side of
the tractor.
• Loosen, but do not remove the four hex flange lock nuts and
screws securing the sub-frame mounting bracket to the plate
on the front of the sub-frame rail. Refer to Figure 5.
• Locate the three holes in a triangular pattern on the tractor’s
clutch housing. Remove the protective plugs from the lower
two holes. Refer to Figure 5.
• Raise the front of the RH sub-frame assembly and align its
two upper holes with the two lower holes of the clutch housing.
Insert the two hex cap screws(4) and thread into the clutch
housing. Do not fully tighten now. Refer to Figure 5.
• ONLYIftheRHLoaderMountisinstalled. Remove the two
lower screws fastening the rear of the loader mount to the
tractor clutch housing. Align the upper holes of the RH loader
adapter bracket (installed on RH sub-frame assembly earlier)
with the loader mount holes. Insert the longer hex screws(5)
and thread into the clutch housing. Do not fully tighten now.
Scrap (or store for possible future use) the screws removed
from the loader mount.
Hex Cap
Screw
Clutch
Housing
RH Sub-Frame
Mounting Brkt.
Loosen
Fasteners
Figure 5
• Lift the rear of the RH sub-frame assembly and align the three
holes in the rear sub-frame mtg./link pin support bracket with
the three holes in the RH rear axle housing. Insert the shorter
hex screws removed earlier and thread partially into the axle
housing holes. Do not tighten the screws now. See Figure 6.
• Place a 4.95” long spacer (15) between the rear sub-frame
mtg./link pin support bracket and the transmission housing,
and align with the holes in both as shown in Figure 6. Insert
the long hex screw removed earlier through the bracket and
spacer and thread into the transmission housing, but do not
fully tighten.
• Working from the rear of the tractor, slide the RH lower hitch
link pin almost fully to the left.
• Hold the RH lift bracket assembly (13) so that its shorter
side is to the left (toward transmission housing) and pointing
downward. Slide the shorter side of the lift bracket just onto the
hitch link pin. See Figure 7.
Rear Sub-Frame Mtg./
Link Pin Support Brkt.
Hex Screw
Spacer
Figure 6
RH Lower Hitch
Link Pin
RH Lift Brkt.
Assembly
RH Lower
Hitch Link
Short Spacer
Long Spacer
Sway Chain
Clevis Link
Klik Pin
Rear Sub-Frame Mtg./
Link Pin Support Brkt.
Figure 7
10
• Pivot the forward end of the RH lower 3-point hitch link upward
between the two sides of the lift bracket and align with the
hitch link pin. Slide the hitch link pin to the right until just
through the hitch link. Refer to Figure 7.
• Place the short spacer (.625” long) between the lower 3-point
hitch link and the longer side of the lift bracket; then slide the
hitch link pin to the right through the spacer and fully through
the lift bracket. Refer to Figure 7.
• While continuing to slide the hitch link pin to the right, slide the
long spacer (1.125” long) onto the pin. Refer to Figure 7.
• Lift the sway chain assembly and separate the two sway chain
clevis links to position a link on the inside and outside of the
rear sub-frame mtg./link pin support bracket. Align the holes
of the clevis links with the hole in the mounting bracket; then
slide the hitch link pin toward the right through the clevis links
and mounting bracket. Refer to Figure 7.
• Make sure the dowel pin on the left end of the hitch link pin
aligns with the slot in the hub of the retainer bracket on the
transmission housing and slide the pin fully to the right.
• Fully insert the klik pin (removed earlier) into the hole of the
RH lower hitch link pin, and pivot the klik pin ring over the end
of the hitch link pin to lock in position. Refer to Figure 7.
• Evenly tighten all the screws fastening both the front and rear
sub-frame mounting brackets to secure the RH sub-frame
assembly to the tractor. Re-tighten the four hex screws and
flange lock nuts to secure the front sub-frame mounting
bracket to the sub-frame rail.
• Reinstall the right rear tire, raise the tractor and remove the
jack stand, and lower the tractor to the ground.
Installing LH Sub-Frame and LH Lift Bracket Assemblies
• Use a jack to raise the left rear of the tractor so that the left
rear tire is off the ground. Position a jack stand to support the
tractor and remove the left rear wheel.
• To install the LH sub-frame assembly (2), refer to Figures
4 through 7 and follow the instructions for installing the RH
sub-frame, adapting the instructions to the left side of the
tractor.
• The LH lift bracket assembly (14) is installed in the same
manner as the RH lift bracket assembly. Refer to Figure 7 and
adapt the previous instructions to the left side of the tractor to
install the LH lift bracket assembly.
• Evenly tighten all the screws fastening both the front and rear
sub-frame mounting brackets to secure the LH sub-frame
assembly to the tractor. Re-tighten the four hex screws and
flange lock nuts to secure the front sub-frame mounting
bracket to the sub-frame rail.
NOTE: If the sway spring was removed from the tractor’s 3-point
hitch lower hitch links, reconnect the spring to the lower hitch
links now.
Installing Mid PTO Cover
• From the rear of the tractor, locate the two rearmost hex
screws in the bottom/left of the transmission housing. Remove
the two screws. Refer to Figure 8.
• Position the mid PTO cover so that it cups the mid PTO linkage
at the left lower/rear of the transmission, and align its two
mounting holes with the holes in the bottom of the transmis-
sion housing. See Figure 8.
• Reinstall the two hex screws and fully tighten to secure the mid
PTO cover on the transmission housing.
Attaching Rear Lift Rod Assembly
NOTE: The forward end of the rear lift rod assemblies should
already have been attached to the sub-frame lift arms. If not yet
attached, refer to the instructions at the beginning of this section to
attach the forward ends of the rod assemblies.
The rearward end of the rear lift rod assemblies must be connected
to the just installed RH and LH lift bracket assemblies. The lift
rod assemblies were pre-adjusted at the factory, but will require
additional adjustment after installation.
Mid PTO
Cover
Hex
Screw
Figure 8
11
To connect the lift rod assemblies to the lift bracket assemblies,
proceed as follows:
• Check that the LH and RH sub-frame rear lift arms are pinned
up in their respective lockout brackets on the sub-frame
assemblies (Refer to Figure 9). If the lift arms are not locked
in the up position, manually pivot the rear lift arms forward
and upward until each arm is up inside the lockout bracket
on the sub-frame. Remove the lockout pin from the storage
holes in each sub-frame assembly and insert the lockout pin
fully through the lockout bracket, beneath the rear lift arm, to
secure the lift arm in the up position. See Figure 9.
• From the back of the tractor, check that the two low er 3-point
hitch links are level side to side and that both are held inward
by the sway chains and spring. If the hitch links are not level,
follow the instructions in the tractor operator’s manual to adjust
the RH lift link to level the hitch links.
WARNING! Follow all warnings and procedures
provided in the tractor operator’s manual for safely
starting the tractor engine.
• Start the tractor engine and use the 3-point hitch control
lever (refer to the tractor operator’s manual) to raise the lower
3-point hitch links to their HIGHEST POSITION. Stop the
engine.
NOTE: If the 3-point hitch links move very slowly, refer to the trac-
tor operator’s manual and check the tractor hydraulic flow control/
stop knob adjustment.
Clevis Pin
Storage
Hole
Lockout
Bracket
LH Sub-Frame
Rear Lift Arm
Figure 9
• Working at either the right, or left, rear of the tractor, grasp the
rear lift rod assembly and pull the rod as necessary to align
the ball joint hole with the hole at the bottom of the lift bracket.
Refer to Figure 10.
NOTE: If a lift rod assembly is too short to align the ball joint and
lift bracket holes, refer to “Adjusting the Rear Lift Rod Assemblies”
below and turn the rod as shown in Figure 11 to lengthen the rod
assembly as needed to connect to the lift bracket.
• Slide a flat washer (7) onto the hex screw (6) and insert the
hex screw through the ball joint. Slide a second flat washer
(7) onto the hex screw, and insert the screw through the lift
bracket. Secure with the hex lock nut (8). See Figure 10.
• Move to the other side of the tractor and repeat the previous
instructions to connect the rear lift rod to the lift bracket on the
other side of the tractor.
Hex
Lock Nut
Flat Washer
Ball Joint
Hex screw
Lift Bracket
Assembly
Lift Rod
Rear
Flat Washer
RH Thread
Figure 10
12
Adjusting the Rear Lift Rod Assemblies
Proper adjustment of the lift rod assemblies is attained when, with
the deck NOT installed and the tractor 3-point hitch links raised to
their highest position, the sub-frame rear lift arms almost contact
the upper surface of their respective sub-frame lockout brackets
(Refer to Figure 9). To correctly adjust the rear lift rods, proceed as
follows:
• Make certain the tractor 3-point hitch arms are raised to their
highest position.
• Working from the rear of the tractor, loosen the jam nut from
against the right hand thread ball joint by turning the jam nut
clockwise as shown in Figure 11. Turn the nut away from the
ball joint.
• Use a 9/16” open end wrench on the flats of the lift rod to turn
the lift rod in the direction shown in Figure 11 to shorten the lift
rod assembly.
• While observing the position of the rear lift arm in the lockout
bracket, continue to turn the lift rod until the rear lift arm almost
contacts the upper surface of the lockout bracket (Refer to
Figure 9). When the lift rod is properly adjusted, tighten the
jam nut against the ball joint. Refer to Figure 11.
• Move to the lift rod on the other side of the tractor and repeat
the previous instructions to properly adjust the other lift rod
assembly.
NOTE: Improper adjustment of the rear lift rods could result in
breakage of the shear bolts fastening the lift bracket assemblies. If
the deck will not raise correctly, check the lift bracket assembly hex
bolts and replace the hex bolt(s) as necessary.
• Remove the clevis pins holding the sub-frame lift arms up in the
lockout brackets on both sub-frame assemblies. Re-install the
clevis pin in the storage hole of each sub-frame. Refer to Figure 9.
Use 9/16" Wrench
on Rod Flats
RH Thread
Ball Joint
Shorten
Rod
Lengthen
Rod
Rear Lift Arm
Rear Lift
Bracket
Loosen
Jam Nut
Figure 11
INSTALLING THE MOWER DECK
Connecting Mower Deck to Sub-Frame
The mower deck should be installed from the right hand side of the
tractor. To install the deck onto the tractor, proceed as follows:
WARNING! Follow all warnings and procedures
provided in the tractor operator’s manual for safely
starting the tractor engine.
• If the rear lift arms of the sub-frame assemblies are raised
to their highest position, start the tractor engine and use
the 3-point hitch control lever (refer to the tractor operator’s
manual) to lower the lift arms.
• From the right side of the tractor, pull the release pin of the
rear lift arm assembly out of the upper hole in the lock bracket;
then slightly pivot the pin so that it is held outward against the
side of the lock bracket. Refer to Figure 12.
• Slide the lock bracket up the lift arm until the lower hole in the
lock bracket aligns with the pin hole in the lift arm. Pivot the
release pin down to the lower hole and release so that the
pin goes through the lock bracket and lift arm to fix the lock
bracket in the raised (unlocked) position. See Figure 12.
• Repeat the procedure on the left side of the tractor to fix the
lock bracket of the LH rear lift arm assembly in the raised
(unlocked) position.
• Start the tractor engine and use the 3-point hitch control lever
(refer to the tractor operator’s manual) to raise the lift arms to
their highest position. Stop the engine.
• Remove the internal cotter pins and clevis pins and raise the
front caster wheels to their highest position (lowest deck height
setting).
NOTE: Refer to the Adjustments section later in this manual for
instructions on adjusting the position of the deck caster wheels.
• Remove the internal cotter pin and withdraw the clevis pin from
Figure 12
Lock Bracket
Release Pin
13
the rear gauge wheel adjustment handle and index bracket.
Move the gauge wheels to their highest position (lowest deck
height setting).
• Use the tractor steering wheel to turn the front wheels of the
tractor all the way to the left.
NOTE: It may be necessary to momentarily start the tractor to fully
turn the front wheels. Stop the engine after turning wheels.
• From the right side of the tractor, maneuver the deck under-
neath the tractor. Slide the deck under the tractor until the
hitch brackets on the back of the deck approximately align with
the rear lift arms.
• Slide the deck forward, then use the 3-point hitch control lever
to lower the rear lift arms until the receiver slots of the arms
align with pins in the hitch brackets on the rear the deck. Refer
to Figure 13.
• Roll the deck rearward to fully engage the deck hitch bracket
pins in the receiver slots of the RH and LH rear lift arms. Refer
to Figure 13.
• From either side of the tractor, pull the rear lift arm release
pin out of the lower hole in the lock bracket and slide the lock
bracket downward to straddle the deck hitch bracket pin. Align
the upper hole in the lock bracket with the lift arm hole. Pivot
the release pin upward to the upper hole and release so that
the pin goes fully through the lock bracket and lift arm to fix the
lock bracket in the locked position. See Figure 13.
• Move to the other side of the tractor and repeat the above
procedure to capture the deck hitch bracket pin in the rear lift
link on the other side of the tractor. Refer to Figure 13.
• From either side of the tractor, remove internal cotter pin and
withdraw the clevis pin from the front lift link on the deck. Refer
to Figure 14.
• Pivot the lift link upward so that it straddles the sub-frame front
lift arm. Align the holes and insert the clevis pin. Secure with
the internal cotter pin. See Figure 14.
• Move to the other side of the tractor and connect the other
deck front lift link to the sub-frame lift arm as described in the
previous two steps.
Connecting Deck Drive Shaft
WARNING! Do not attempt to connect the drive shaft
when the tractor engine is running. Stop the tractor
engine, disengage all PTO controls, engage the
parking brake, and wait for all movement to stop
before connecting the deck drive shaft.
The deck drive shaft must be securely connected to the mid - PTO
shaft at the lower/front of the tractor’s transmission housing.
NOTE: The deck, sub-frame, and rear tires limit access to the
mid - PTO shaft. If you cannot connect deck drive shaft from the
side of the tractor, you will have to access the mid - PTO shaft from
the rear of the tractor, between the rear tires. Some 3-point hitch
attachments may have to be temporarily removed to allow you to
connect the deck drive shaft.
WARNING! Never position any part of your body
beneath tractor implements held in the raised position
only by the tractor’s hydraulic system. A sudden loss
of pressure could cause the implement to fall and
could result in severe injury.
• Position the deck drive shaft so that it faces rearward from the
deck gear box.
Deck Hitch
Bracket
Hitch Brkt. Pin
Release Pin
Rear Lift Arm
Deck Hitch
Bracket
Lock Bracket
Lift Arm
Receiver
Slot
Figure 13
Front
Lift Arm
Front
Lift Link
Internal
Cotter Pin
Clevis
Pin
Figure 14
14
The following practices will help eliminate streaking:
• Mow the area more often so the grass doesn’t get too tall and
heavy.
• Operate the tractor at the recommended RPM and at a slower
forward speed.
• Keep the blades sharp and replace the blades when worn.
USING SUB-FRAME LOCK OUT
Removal of the mower deck is not necessary to utilize implements
attached to the 3 - point hitch. The sub-frame lock feature allows
the 3 - point hitch links to be raised and lowered without also raising
and lowering the mower deck.
To engage the deck lock out feature, proceed as follows:
• On each side of the tractor, withdraw the clevis pin from
the storage hole at the middle of the RH and LH sub-frame
assemblies. Refer to Figure 9.
• Start the tractor engine and use the 3-point hitch control lever
(refer to the tractor operator’s manual) to raise the lift arms to
their highest position. Stop the engine.
• From either side of the tractor, insert the clevis pin through the
lockout bracket, beneath the rear lift arm, to secure the lift arm
in the up position. See Figure 16.
• Move to the other side of the tractor and insert the other clevis
pin through the lockout bracket to secure the lift arm in the up
position. Refer to Figure 16.
• Align the locking collar of the drive shaft with the mid - PTO
shaft and slide the drive shaft fully onto the PTO shaft. If
necessary, compress the locking collar of the drive shaft to
ease connecting the shaft. See Figure 15.
NOTE: It may be necessary to turn the pulleys on the deck slightly
to align the splines of the drive shaft with those of the PTO shaft.
• Pull the drive shaft to make sure it is locked onto the PTO
shaft. The drive shaft must not pull off of the mid - PTO shaft.
MOWING
WARNING! To avoid possible injury, never direct the
discharge of material toward bystanders or allow
anyone near the machine while in operation. Although
the area has been supposedly cleared of foreign
objects, small objects may be picked up and dis-
charged by the mower.
NOTE: Prior to using the mower deck after installation, refer to the
adjustment and leveling instructions in Section 8 “Adjustments.”
For best results it is recommended that the first two laps should
be cut with the discharge thrown towards the center. After the first
two laps, reverse the direction to throw the discharge to the outside
for the balance of cutting. This will give a better appearance to the
lawn.
Do not cut the grass too short. Short grass invites weed growth
and yellows quickly in dry weather.
Mowing should be done with the engine operating at the RPM
recommended for the PTO powering the deck. Do not mow at high
ground speed.
During certain times of the year and under some conditions, the
mower may leave streaks of uncut grass.
Streaking may occur when attempting to mow heavy weeds and
tall grass. Under these conditions it may be necessary to go back
over the cut area a second time to get a clean cut.
Drive
Shaft
Locking
Collar
Mid PTO
Shaft
Figure 15
LH Rear
Lift Arm
Lockout
Bracket
Clevis Pin
Figure 16
15
REMOVING THE MOWER DECK
If you choose to remove the mower deck from the tractor, proceed
as follows:
WARNING! Do not attempt to disconnect the drive
shaft when the tractor engine is running. Stop the
tractor engine, disengage all PTO controls, engage
the parking brake, and wait for all movement to stop
before disconnecting the deck drive shaft.
• Adjust the front caster wheels and rear gauge wheels to their
highest position (lowest deck position) and use the tractor
3-point hitch control lever to lower the deck to the ground.
Refer to “Adjustments” later in this manual.
WARNING! Never position any part of your body
beneath tractor implements held in the raised position
only by the tractor’s hydraulic system. A sudden loss
of pressure could cause the implement to fall and
could result in severe injury.
NOTE: If accessing the deck drive shaft from the rear of the tractor,
it may be necessary to temporarily remove some 3 - hitch attach-
ments.
• Accessing the drive shaft from either the side or the rear of
the tractor, grasp the drive shaft locking collar and compress
toward the body of the shaft to release and slide the shaft from
the tractor’s mid - PTO shaft. Pivot the drive shaft to the side so
that it rests on top of the deck housing. Refer to Figure 15.
• From each side of the tractor, remove the internal cotter pin
and withdraw the clevis pin to disconnect the front lift links
from the sub-frame front lift arms. Refer to Figure 14. Reinsert
the clevis pins into the deck front lift links and secure with the
internal cotter pins to store with the deck.
• From either side of the tractor, pull the release pin of the rear
lift arm assembly out of the upper hole in the lock bracket;
then slightly pivot the pin so that it is held outward against the
side of the lock bracket. Refer to Figure 12.
• Slide the lock bracket up the lift arm until the lower hole in the
lock bracket aligns with the pin hole in the lift arm. Pivot the
release pin down to the lower hole and release so that the
pin goes through the lock bracket and lift arm to fix the lock
bracket in the raised (unlocked) position. See Figure 12.
• Repeat the procedure on the other side of the tractor to fix
the lock bracket of the rear lift arm assembly in the raised
(unlocked) position.
• Roll the deck forward to disengage the deck hitch bracket pins
from the receiver slots of the RH and LH rear lift arms. Refer to
Figure 13.
• Start the tractor engine and use the 3-point hitch control lever
(refer to the tractor operator’s manual) to raise the lift arms to
their highest position, and turn the front wheels of the tractor
all the way to the left. Stop the engine.
• From the right side of the tractor, maneuver the deck out from
underneath the tractor.
• The sub-frame front and rear lift arms should be secured in the
locked out position when not in use. On each side of the trac-
tor, withdraw the clevis pin from the storage hole at the middle
of the RH and LH sub-frame assemblies. Refer to Figure 9.
• From either side of the tractor, insert the clevis pin through the
lockout bracket, beneath the rear lift arm, to secure the lift arm
in the up position. See Figure 15.
• Move to the other side of the tractor and insert the other clevis
pin through the lockout bracket and rear lift arm. Secure with
the internal cotter pin. Refer to Figure 16.
Follow the instructions from the subsection “Installing the Mower
Deck” on page 11 to reinstall the mower deck after the initial
installation has been completed.
SECTION 8: ADJUSTMENTS
ADJUSTING DECK GAUGE WHEELS
The 60" mower deck is equipped with ground following front
caster wheels and is designed to be operated with the front caster
wheels and rear gauge wheels on the ground. Consequently, the
adjusted position of the front caster wheels and rear gauge wheels
determine the cutting height.
There are six cutting height positions ranging from 1-1/4" to 5".
Adjust the front caster wheels and rear gauge wheels to the
desired cutting height before starting the engine to begin mowing.
WARNING! Stop the tractor engine, disengage all
PTO controls, engage the parking brake, and wait for
all movement to stop before adjusting the deck
wheels.
Adjusting the Front Caster Wheels
There six index holes in the caster wheel shafts that are ap-
proximately 3/4" apart. Consequently, each index hole adjustment
will raise, or lower, the mower deck approximately 3/4 of an inch.
To adjust the front gauge wheels, determine your desired cutting
height and proceed as follows:
• Use the tractor 3-point hitch control lever to raise the mower
deck off of the ground.
16
• Working at the front caster wheel on either side of the deck,
remove the internal cotter pin from the clevis pin securing the
caster wheel shaft in the caster bracket. See Figure 17.
• Support the caster wheel and withdraw the clevis pin.
• Slide the caster wheel shaft up or down in the caster bracket
to the desired height setting and align the index hole with the
hole in the castor bracket. See Figure 17.
• Insert the clevis pin through the caster bracket and shaft, and
secure with the internal cotter pin.
• Note the index hole used for the just adjusted caster wheel,
and repeat the above procedure to adjust the other caster
wheel to the same position.
Adjusting the Rear Gauge Wheels
The height adjustment handle on the left side of the deck is used
to adjust the position of the rear gauge wheels. The rear gauge
wheel index bracket on the deck also has six index holes, which
correspond to the six index holes of the caster wheel shaft.
When adjusting the rear gauge wheels, the height setting should
correspond to the selected setting for the front caster wheels. For
example, if the front caster wheels were adjusted to their lowest
index hole (lowest deck setting), the rear gauge wheels should be
adjusted to their highest setting (lowest deck setting). Adjust the
rear gauge wheels as follows:
• Use the tractor 3-point hitch control lever to raise the mower
deck so that the rear gauge wheels are off of the ground.
• Note which of the six shaft index holes the front caster wheels
are set in.
• Remove the internal cotter pin from the clevis pin in the height
adjust handle.
Clevis Pin
Caster
Bracket
Caster
Wheel
Internal
Cotter Pin
Caster
Wheel
Shaft
Figure 17
• Grasp the height adjust handle and withdraw the clevis pin.
See Figure 18.
• Move the height adjust handle to the hole in the index bracket
that corresponds to the index hole used to adjust the front
caster wheels (the lower index bracket holes correspond to the
lower caster wheel shaft holes - higher index bracket holes to
higher caster wheel shaft holes). See Figure 18.
• Align the height adjust handle hole with the appropriate index
bracket hole and re-insert the clevis pin through the handle
and index bracket. Secure with the internal cotter pin. Refer to
Figure 18.
NOTE: Whenever the front caster wheel position is changed, the
rear gauge wheel position should also be adjusted.
LEVELING THE MOWER DECK
Although the mower deck is designed to operate with the front
caster wheels and rear gauge wheels on the ground, some mowing
conditions may require the mower deck to be operated with the
deck wheels off the ground. To assure a quality cut in those
situations, the deck should be properly leveled. Correct adjustment
of the mower deck will level the deck from side to side, and provide
the correct front to back pitch of the mower deck.
The mower deck should be leveled during the initial installation
of the deck, and then periodically checked and re-adjusted as
necessary.
WARNING! Before leveling the mower deck, position
the tractor on a hard level surface, engage the parking
brake lever and turn ignition key to the “OFF” position.
ALWAYS stop the engine after utilizing the tractor
hydraulic lift system. When handling the mower deck,
be careful not to cut yourself on the sharp blades.
Rear Gauge
Wheels
Index
Bracket
Height
Adjust
Handle
Internal
Cotter Pin
Clevis Pin
(Lower Deck)
(Raise Deck)
(Raise Gauge
Wheels)
(Lower Gauge
Wheels)
Figure 18
17
• Loosen the jam nut from against the ball joint on the rear of the
rod assembly. See Figure 20.
• Use a 9/16" wrench on the flats of the lift rod to turn the lift rod
in the direction shown in Figure 19 to lengthen the rod. Turn
the rod only in small increments, while continuing to measure
the outer blade tip heights.
• When the blade tip heights are within 1/16" of each other,
re-tighten the jam nut against the ball joint.
Front to Back Leveling
The front of the mower deck should be approximately 1/4" lower
than the rear of the deck when hanging from the sub-frame with the
front caster wheels and rear gauge wheels off the ground.
The front lift rods are adjusted at the factory, but may require ad-
ditional adjustment when performing the initial installation of the
mower deck onto the tractor.
WARNING! Engage the parking brake and turn
ignition key to the “OFF” position. ALWAYS stop the
engine after utilizing the tractor hydraulic lift system.
When handling the mower deck, be careful not to cut
yourself on the sharp blades.
• Start the tractor engine and use the 3-point hitch control lever
(refer to the tractor operator’s manual) to raise the mower deck
so that its wheels are off the ground. Stop the engine.
Lengthen
Rod
Loosen
Jam Nut
Use 9/16" Wrench
on Rod Flats
Figure 20
Side to Side Leveling
Most of the side to side leveling of the mower deck is accomp-
lished with minor adjustment of one of the rear lift rod assemblies.
However, the initial front to back adjustment of the front lift rod
assemblies may affect the side to side leveling. For the initial
leveling of the deck, perform the side to side leveling described
below, adjust the front to back pitch of the deck, then recheck the
side to side level and adjust as necassary.
NOTE: Check for proper tire inflation before checking and/or
making a leveling adjustment.
When the deck is properly leveled, the left and right blades will
have corresponding cutting-edge-to-ground measurements within
1/16 inch of each other.
• Use the tractor hydraulic lift system to raise the deck so that its
wheels are off the ground. Stop the engine.
• Carefully rotate the outer cutting blades so that they are
positioned perpendicular to the tractor frame. See Figure 19.
• Measure and record the distance from the level surface to
the outer-most cutting edge of the right blade. Repeat this
measurement for the left blade. If the two blade heights are not
within 1/16 inch, the deck must be leveled. Note which blade
had the larger distance between the cutting edge and
level surface.
• From the rear of the tractor, work on the rear lift rod assembly
on the side of the tractor with the LARGER ground to blade
cutting edge measurement.
Figure 19
18
• Carefully turn the outer blades of the mower deck so that the
ends of the blades point to the front and rear of the deck. See
Figure 21.
• Measure the distance from the front cutting edge tip of the
blade to the ground. Then measure the distance from the
rear cutting edge tip to the ground. Repeat to measure the
outer blade on the other side of the deck. The front blade tip
measurement should be approximately 1/4" less than the rear
measurement, and the measurements should be approxi-
mately equal from side to side.
• If the difference between the front and rear blade tip heights is
greater than 1/4 inch, the front lift rods assemblies should be
shortened. If less than 1/4 inch, the rod assemblies should be
lengthened.
Figure 21
• If adjustment is necessary, loosen the jam nuts and turn them
away from the ball joints on the front end of the front lift rod
assembly on each side of the tractor. See Figure 22.
• On each side of the tractor, use a 9/16" wrench on the flats
of each rod to turn the rod. Turn each rod as shown in Figure
22 to shorten the rod and raise the front of the deck, or to
lengthen the rod and lower the front of the deck.
• Adjust both front lift rods in small increments, while continuing
to re-measure the front and rear blade heights. When the deck
is approximately 1/4" lower in the front, re-tighten the jam nuts
against the front ball joints.
• If performing the initial leveling of the mower deck, re-position
the blades and re-check the side to side level of the deck as
described in the previous sub section “Side to Side Leveling.”
Shorten
Jam Nut
Loosen
Use 9/16" Wrench
on Rod Flats
Lengthen
Figure 22
SECTION 9: DECK MAINTENANCE
BLADE CARE
WARNING! Stop the tractor engine, disengage all
PTO controls, engage the parking brake, and wait for
all movement to stop before adjusting the deck
wheels.
The cutting blades must be kept sharp at all times. Inspect and
sharpen, or replace, the cutting blades as follows:
NOTE: Sharpen the cutting edges of the blades evenly so that
the blades remain balanced and the same angle of sharpness is
maintained.
• Remove the mower deck from the tractor as described earlier
in this manual. Carefully tip the deck upward to access the
bottom of the mower deck.
• To remove the blades, use a 1-1/8 inch wrench to hold the
hex head of the spindle bolt, while using a second 1-1/8 inch
wrench to loosen the hex flange nut securing the blade.
NOTE: A block of wood may be placed between the deck housing
and the cutting edge of the blade to help in breaking loose the
hex flange lock nut securing the blade.
• Inspect each blade. The cutting blades should be kept sharp at
all times.
• Sharpen the cutting edges of the blades evenly so that the
blades remain balanced and the same angle of sharpness is
maintained.
• If the cutting edge of a blade has already been sharpened
many times, or if any metal separation is present, it is
recommended that a new blade be installed. New blades are
available at your authorized dealer.
• When replacing the blades, be sure they are installed so that
the wind wings are pointing upward toward the top of the deck
housing. Secure the hex head of the spindle bolt and tighten
the hex flange nuts to 90 to 110 ft-lbs. (122 to 149 N·m).
• After replacing the blades, apply grease the exposed threads
at the bottom of the spindle bolts to prevent rust buildup.
19
CLEANING THE MOWER DECK
Using The Deck Wash System
WARNING! When using the deck wash system, never
engage the deck from any position other than the
operator’s seat of the tractor. Do not engage the deck
if bystanders are in the area.
• Attach the nozzle adapter (16) to a standard garden hose
connected to a water supply.
• Move the tractor to an area within reach of the hose where the
dispersal of wet grass clippings is not objectionable to you.
Disengage the PTO, engage the parking brake, and stop the
engine.
• Pull back the lock collar of the nozzle adapter and push the
adapter onto the deck wash nozzle at the left end of the mower
deck. Release the lock collar to lock the adapter on the nozzle.
Refer to Figure 23.
• Turn on the water supply.
• From the tractor operator’s seat, start the engine and engage
the mid - PTO. Allow to run as needed. Disengage the PTO
and stop the engine.
• Turn off the water supply.
• Pull back the lock collar of the nozzle adapter to disconnect
the adapter from the nozzle.
• Connect the nozzle adapter and hose to the deck wash nozzle
on the right side of the deck, and repeat the previous steps to
clean the mower deck.
Cleaning the Spindle Pulleys
Periodically remove the belt covers and remove any accumulated
grass clippings from around the spindle pulleys and the deck belt.
• Remove the three hex screws fastening the RH belt cover.
Refer to Figure 24.
• Remove the two hex screws fastening the LH belt cover. Slide
the belt inward to disengage its tabs from the slots in the index
bracket on the deck. Refer to Figure 24.
• Clean away any grass clippings and debris that may have
collected around spindle pulleys and belt.
• Align the LH belt cover tabs with the slots in the index bracket
and push the cover outward so that the tabs are fully engaged
in the slots and the cover holes align with the speed nuts on
the cover brackets. Install the two hex screws and fully tighten.
• Position the RH belt cover to align its three holes with the
speed nuts on the cover brackets. Install the three hex screws
and fully tighten.
Nozzle
Adapter
Pull Lock
Collar Back
Deck Wash
Nozzle
Adapter
Lock Collar
Figure 23
Figure 24
Hex Screw
Hex Screw
RH Belt
Cover
Index
Bracket
LH Belt
Cover
20
LUBRICATION
Lubricating the Mower Deck
Always lubricate the deck thoroughly before taking it to the field.
Use a pressure lubricating gun to apply grease to the deck lube
fittings.
• After every 10 hours of operation and/or before putting the
deck into winter storage, lubricate the spindle assemblies and
the idler bracket with 251H EP grease or an equivalent No. 2
multipurpose lithium grease. Remove the plugs from the RH
and LH belt covers to access the two outer spindle lube fitting.
Refer to Figure 25.
• After every 50 hours of operation and/or before putting the
deck into winter storage, lubricate the drive shaft with 251HEP
grease or an equivalent No. 2 multipurpose lithium grease.
Refer to Figure 25.
• The deck gear box is lubricated and sealed, and does not
require additional lubrication.
• Periodically lubricate the pivot hubs of the rear gauge wheel
adjustment shaft with a good grade of lubricating oil.
Figure 25
Spindle
Lube
Fitting
Idler
Bracket
Lube
Fitting
Spindle
Lube
Fitting
Spindle
Lube
Fitting
Drive Shaft
Lube Fitting
Lubricating the Sub-Frame
The lift shafts of both the RH and LH sub-frame assemblies are
equipped with lube fittings.
• After every 10 hours of operation, lubricate the two lift shafts
on both the RH and LH sub-frame assemblies with 251H EP
grease or an equivalent No. 2 multipurpose lithium grease.
See Figure 26.
SPINDLE BELT REPLACEMENT
A worn spindle belt will affect the quality of cut from the mower
deck and should be replaced. Referring to Figure 27, replace the
spindle belt as follows:
Figure 26
Rear Lift Shaft
Lube Fitting
Front Lift Shaft
Lube Fitting
21
Remove Spindle Belt
• Remove the two hex screws securing the LH belt cover to the
deck. Slide the belt cover tabs from the slots of the deck index
bracket to remove the cover. Refer to Figure 27
• Remove the three hex cap screws securing the RH belt cover
and remove the belt cover.
• Observe the routing of the spindle belt to help ensure proper
installation of the new belt.
WARNING! The idler arm and movable flat idler
pulley are under spring tension. Use caution when
handling the idler pulley.
• Push the movable flat idler pulley toward the left side of the
deck to relieve belt tension. Slip the spindle belt up and off the
movable flat idler pulley, then carefully release the flat idler
Moveable
Flat Idler
Pulley
Fixed
Flat Idler
Pulley
Spindle
Pulley
Spindle
Pulley
Spindle
Belt
Spindle
Belt
Drive Pulley
Gear Box
LH Belt
Cover
Shoulder
Bolt
Hex Cap
Screw
Mntg.
Bracket
Figure 27
pulley.
• Slide the belt off and over the LH spindle pulley, then pull the
belt under the LH belt cover mounting bracket. See Figure 27.
• Slip the belt off the fixed flat idler pulley, center spindle pulley,
and RH spindle pulley.
• Remove the four hex cap screws securing the gear box to the
gear box mounting bracket on the deck.
• Lift the gear box, slip the belt off and underneath the drive
pulley, and remove the belt from the deck.
Install New Spindle Belt
• Lift the gear box assembly to install the belt around the drive
pulley.
• Position the gear box to align its four screw holes with the
gear box mounting bracket holes. Secure with the four hex cap
screws removed earlier.
• Route the backside of the belt around the back and right of the
movable flat idler pulley as shown in Figure 27.
• Loop the belt and route in front of the shoulder bolt toward
the left side of the deck. Slide the loop of the belt underneath
the LH belt cover mounting bracket, and place the belt in the
groove of the LH spindle pulley. See Figure 27.
• Then route the belt as follows:
1. Around the rear of the fixed flat idler pulley
2. Around the front of the center spindle pulley
3. To the right spindle pulley
• After making certain the spindle belt is properly engaged in
each pulley and that the backside of the belt is against the
shoulder bolt, pivot the movable flat idler pulley toward the left
side of the deck to relieve tension and to allow the belt to be
rolled onto the right hand spindle pulley.
• Install the belt covers and secure with the hex cap screws.
22
NOTES
23
SECTION 10: PARTS LIST
Sub-Frame
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
17
16
19
20
21
21
23
24
25
25
22
26
26
28
29
28
30
30
31
31
32
33
34
33
34
35
36
38
38
38
38
39
40
41
41
41
41
43
44
42
45
45
46
47
18
27
37
24
Ref.
No.
Part
Number Description Qty.
1 603-04420 Deck Sub-Frame Shaft 2
2 603-04421 Front Lift Arm, RH 1
3 603-04422 Front Lift Arm, LH 1
4 603-04423A Sub-Frame Rail, LH 1
5 603-04424A Sub-Frame Rail, RH 1
6 603-04425 Rear Lift Arm, RH 1
7 603-04426 Rear Lift Shaft 2
8 603-04427 Rear Lift Arm, LH 1
9 603-04440 Loader Adapter Bracket, LH 1
10 603-04441 Loader Adapter Bracket, RH 1
11 703-06026 Sub-Frame Mounting Bracket, LH 1
12 703-06027 Sub-Frame Mounting Bracket, RH 1
13 703-06095 Lock Pin Bracket 2
14 703-06162 Breakaway Lift Bracket, RH 1
15 703-06163 Breakaway Lift Bracket, LH 1
16 703-06164 Lift Bracket, LH 1
17 703-06165 Lift Bracket, RH 1
18 703-06201 Mid PTO Cover 1
19 710 - 04129 Hex Cap Screw, 5/8-11 x 2.5 2
20 710-04697 Hex Cap Screw, M16-2.0 x 35 4
21 710-04700 Hex Cap Screw, M16-2.0 x 60 4
22 710-04706 Hex Cap Screw, 5/8-11 x 1.75 2
23 710-04712 Hex Cap Screw, 3/8-16 x 1.25 2
24 710-3005 Hex Cap Screw, 3/8-16 x 1.25 8
Ref.
No.
Part
Number Description Qty.
25 710 -3144 Hex Cap Screw, 3/8-16 x 2.0 4
26 711-04845 Pin, .625 2
27 712-0261 Jam Lock Nut, 5/8-16 2
28 712-04065 Hex Lock Nut, 3/8-16 10
29 712-3016 Hex Lock Nut, 5/8-11 2
30 712-3056 Hex Jam Nut, 5/8-18 4
31 714-04003 Internal Cotter Pin, .125 x 2.5 4
32 714 - 0474 Cotter Pin, .125 x .75 2
33 723-04050 Ball Joint, .625 x 5/8-18 4
34 723-04061
Ball Joint, .625 x 5/8-18
4
35 732-0306A Compression Spring, .531 x 1.75 2
36 736-0140 Flat Washer, .385 x .62 x .063 2
37 736-0290 Flat Washer, .625 x 1.0 x .067 2
38 736-0366 Flat Washer, .64 x 1.12 x .125 8
39 737-04091 Lube Fitting 2
40 737-3000 Lube Fitting 2
41 741- 0558 Flange Bearing, 1.0 x 1.125 x 1.62 8
42 747-04702 Deck Release Rod 2
43 747- 04831 Rod, 23.735 Lg LH/RH Thrd. 2
44 747-04832 Rod, 15.25 Lg LH/RH Thrd. 2
45 750-04858 Spacer, .625 x 4.95 2
46 750-04877 Spacer, 1.25 x .625 2
47 750-04878A Spacer, 1.25 x 1.25 2
25
Mower Deck
918-3129C
26
Ref.
No.
Part
Number Description Qty.
1 603-04413 Deck Wheel Bracket 2
2 603-04416 Deck Housing 1
3 603-04418 Wheel Height Adjustment Handle 1
4 603-04419 Caster Wheel Yoke Bracket 2
5 603-04430 Front Lift Link 2
6 603-0662 Deck Guard 1
7 603-0848A Idler Bracket 1
8 918-3129C Spindle Assembly 3
9 638-04012A Shoulder Bolt Assembly 1
10 703-05658 Idler Support Plate 1
11 703-06199 Belt Cover, RH 1
12 703-3248 Deck Baffle 1
13 703-3250 Chute Deflector Bracket 1
14 703-3273 Belt Cover, LH 1
15 710-0347 Hex Cap Screw, 3/8-16 x 1.75 1
16 710-0376 Hex Cap Screw, 5/16-18 x 1/0 6
17 710-0395 Hex Cap Screw, 5/16-18 x 2.25 1
18 710-0521 Hex Cap Screw, 3/8-16 x 3.0 1
19 710-0805 Hex Cap Screw, 5/16-18 x 1.5 4
20 710-1260A Hex Washer Screw, 5/16-18 x .75 12
21 710 -1336A Spindle Bolt, 3/4-16 x 4.25 3
22 710 -1638 Carriage Screw, 1/2-13 x 4.5 4
23 710-1649 Carriage Screw, 3/8-16 x 4.25 2
24 710-1880 Hex Screw, 5/16-18 x .75 4
25 710-3168 Carriage Bolt, 3/8-16 x 1.0 2
26 710-3178 Carriage Bolt, 3/8-16 x .75 6
27 710-3251 Socket Screw, 5/16-18 x 1.75 1
28 711-04715 Clevis Pin, .625 x 1.5 4
29 711-04729A Gauge Wheel Shaft 2
30 711- 0679A Clevis Pin, 3/8 x 2.015 3
31 711-1643 Clevis Pin, 3/4 x 2.5 2
32 711- 3 314 Roller Pin, 1/2 x 7.31 1
33 712-0290 Hex Lock Nut, 7/16-14 1
34 712-04063 Hex Lock Nut, 5/16-18 4
35 712-04065 Hex Lock Nut, 3/8-16 5
36 712-0429 Hex Lock Nut, 5/16-18 1
37 712-0431 Hex Lock Nut, 3/8-16 7
38 712-0641 Hex Nut, M16 - 1.5 2
39 712-3046 Hex Lock Nut, 5/16-18 2
40 712-3078 Hex Lock Nut, 3/4-16 2
41 712-3083 Hex Lock Nut, 1/2-13 4
42 714 - 0115 Cotter Pin, 1/8 x 1.0 1
Ref.
No.
Part
Number Description Qty.
43 714 - 0117 Internal Cotter Pin 2
44 714-0128 Square Key, 1/4 x 1.0 1
45 714- 0147 Internal Cotter Pin 3
46 714-04003 Internal Cotter Pin 4
47 716-0102 Snap Ring 1
48 716 - 0111 External Retaining Ring 1
49 717-04415 Gearbox 1
50 717-04422 Deck Drive Shaft 1
51 721-04041 Nozzle Adapter 1
52 726 - 0211 Speed Nut, 5/16-18 5
53 726-3045 Plug Button 2
54 731-3005 Front Roller 1
55 731-3257 Chute Deflector 1
56 732-0850 Extension Spring, 1.0 x 6.14 1
57 732-0939 Torsion Spring 1
58 734-04314 Caste Wheel 4
59 736-0258 Flat Washer, .385 x 1.0 x .135 2
60 736-0275 Flat Washer, .344 x .688 x .065 1
61 736-0291 Flat Washer, .88 x 1.38 x .125 1
62 736-0322 Flat Washer, .45 x 1.25 x .164 1
63 736-0354 Flat Washer, .39 x .75 x .105 1
64 736-0362 Flat Washer, .33 x 1.25 x .06 1
65 736- 04167 Flat Washer, 1.063 x 2.5 x .16 1
66 736-0760 Lock Washer 1
67 737-04003C Deck Wash Nozzle 2
68 737-3000 Lube Fitting 3
69 738-03056 Shoulder Bolt, .496 x 2.5:3/8-16 1
70 741-0941 Ball Bearing 2
71 759-04013 High Lift Blade 3
72 747-3384 Chute Deflector Rod 1
73 748-3065A Spindle Spacer 6
74 748-3087 Idler Spacer 1
75 750-0535 Spacer, .38 x .625 x .21 1
76 750-3222 Caster Wheel Axle 4
77 754-3103 V-Belt 1
78 756-04292 Drive Pulley 1
79 756-3062 Idler Pulley, 5.0 2
80 756-3096 Spindle Pulley 3
81 721-3018A Oil Seal 6
82 741-04129 Cone Bearing 6
83 741-04130 Bearing Cup 6
84 750-04409 Bearing Spacer 3
27
Yanmar America Corporation, 101 International Parkway, Adairsville, GA 30103; Phone: 1-855-416-7091
