OWNER'S
MANUAL
247.799640
Caution:
ReadandFollow
All SafetyRules
andInstructions
BeforeOperating
ThisEquipment
CRRFTSMRN®
9 HORSEPOWER
MULCHING AND BAGGING
CHIPPER-VACUUM
Assembly
Operation
Customer Responsibilities
Serviceand Adjustment
Repair Parts
SEARS,ROEBUCKAND CO., HoffmanEstates,IL 60179 U.S.A.
i
inted in U,S.A. 770-8894K 2/95
!MPORTANT OPERATIONPRACTICES
THISSYMBOLPOINTSOUTIMPORTANTSAFETYINSTRUCTIONSWHICH,IF NOTFOLLOWED,COULDENDANGERTHEPERSONALA
_ AFETYAND/ORPROPERTYOFYOURSELFANDOTHERS.READANDFOLLOWALL INSTRUCTIONSIN THIS MANUALBEFORE
ATTEMPTINGTOOPERATEYOURPOWERCHIPPER-VACUUM.FAILURETOCOMPLYWITHTHESEINSTRUCTIONSMAYRESULTIN
PERSONALINJURY.WHENYOUSEETHISSYMBOL--_ REEDITSWAFINING.
&
DANGER:
Your chipper-vacuum was built to be operated according to the rules for safe operation in
this manua. As with any type of power equipment carelessness or error on the part of the
operator can result in serious injury. This unit is capable of amputating fingers and hands
and throwing objects. Failure to observe the following safety instructions couso result in
serious injury or death.
_hl. GENERALOPERATION
• Readthis owner'sguide carefullyin its entiretybeforeattempt-
ing to assemblethis machine. Read,understand,andfollow all
instructionsonthe machineand inthe manual(s)beforeopera-
tion. Becompletelyfamiliarwith thecontrolsandthe properuse
of the machinebeforeoperatingit. Keepthis manualin a safe
piecefor future and regularreferenceand for orderingreplace-
mentparts.
• Your chipper-vacuum is a powerful tool, not a plaything.
Therefore,exerciseextremecautionat all times. Your unit has
beendesignedto performtwo jobs;to chipandvacuumvegeta-
tionfoundina normalyard. Donotuseit foranyotherpurpose.
• Neverallowchildrenunder16 to operatethe unit. Children16
yearsand oldershouldonlyoperateundercloseparentalsuper-
vision. Onlyresponsibleindividuatswho arefamiliarwith these
rulesof safeoperationshouldbeallowedto useyourunit.
• Keeptheareaof operationclearof all persons,particularlysmall
childrenandpets. Stoptheenginewhentheyarein the vicinity
oftheunit.
• Whenfeedingmaterialinto this equipment,beextremelycareful
that piecesof metal,rocks,bottles,cansor otherforeignobjects
are not included. Personalinjury or damageto the machine
couldresult.
• Alwayswearsafetyglassesor safetygoggles,duringoperation
and while performing an adjustmentor repair,to protect eyes
from foreignobjectsthat maybethrownfromthemachine.
• Wearsturdy, rough-soledwork shoesand close fitting slacks
and shirt. Shirt and slacksthat cover the arms and legs and
steel-toedshoesare recommended.Do not wear loosefitting
clothesor jewelryand securehairso it aboveshoulderlength.
Theycan be caught in moving parts. Neveroperatea unit in
barefeet,sandalsor sneakers.Weargloveswhenfeedingmate-
rialinthe chipperchute.
• Donot operatethe unit while underthe influenceof alcoholor
drugs.
• Donotover-reach.Keepproperfootingandbalanceatalltimes.
• Neverplaceyourhandsor anypartofyour bodyor clothingnear
or underrotatingparts. Keepclearofthe dischargeopeningat
all times Neverinsertyour handsor anypart of your bodyor
clothing intothe nozzle,chipperchute or dischargeopeningas
therotatingimpetlercancauseseriousinjury.
• If it isnecessaryfor anyreasonto unclogthefeedintakeor dis-
chargeopeningsor to inspector repairanypartof themachine
wherea moving part can come in contactwith your body or
clothing,stopthe machine+allowit to cool,disconnectthespark
plugwire fromthe sparkplugand moveit awayfrom the spark
plugbeforeattemptingto unclog,inspector repair.
• Neveroperateunit without vacuum bagand discharge chute
properly affixedto unit, Largezipperedend of bag must be
closedto preventobjectsfrom beingblownout.
• Neveroperateunit without eitherthe inlet nozzleor optional
hoseattachmentproperlyaffixedto unit. Thesedevicesshield
the operatorfrom accidentalcontactwith the rotatingimpeller.
Neverattemptto convertthe unitfrom nozzleto hosemodeor
viceversawith theenginerunning.
• Neverattemptto removeoremptyvacuumbagwhenengineis
running. Shuttheengineoffandwaitfor theimpellerto cometo
a completestopbeforeremovingthe bag. Theimpetlercontin-
uesto rotate for a few secondsafter the engine is shut off.
Neverplaceanypart of the body in the impellerareauntil you
aresuretheimpellerhasstoppedrotating.
• Keepall guardsandsafetydevicesin placeandoperatingprop-
erly.
• Donotallow anaccumulationof processedmaterialto build up
in thedischargeareaasthis will preventproper dischargeand
canresuttin kick-backfrom thechipperchute.
• Keepyourfaceandbodybackfrom chipperchuteto avoidacci-
dentalbouncebackof anymaterial.
• If the cutting mechanismstrikes a foreign object or if your
machineshould start making an unusualnoise or vibration,
immediatelystoptheengine,disconnectthesparkplugwireand
movethewire awayfrom the sparkplug. Allowthe machineto
stopandtakethefollowingsteps.
• Inspectfor damage
• Repairor replaceanydamagedparts.
• Checkfor any loosepartsand tighten to assure continued
safeoperation.
• Muffterand enginebecomehotand cancausea burn. Donot
touch.
• Donot altowleavesor otherdebristo buildupon engine'smuf-
fler. Thedebriscouldigniteandcauseafire.
• Donot operateengineff air cleaneror coverovercarburetorair-
intake is removed,exceptfor adjustment. Removalof such
partscouldcreateafire hazard.
_lb 11,CHILDREN
Tragicaccidentscanoccur if the operatorisnot alertto the pres-
enceofsmallchildren. Childrenareoftenattractedto thechipping
and vacuumingactivity. Neverassumethat children will remain
whereyoulastsawthem.
• Keepchildrenoutof theworkareaandunderthewatchfuleyeof
a responsibleadultotherthantheoperator.
• Bealertandturntheunitoff if echildentersthe area.
• Neverallowchildrenundertheageof 16to operatethe chipper-
Vacuum.
_1 111.SERVICE
• Use extreme care in handling gasoline and other fuels. They are
extremely flammable and the vapors areexplosive.
• Store fuel and oil in approved containers, away from heat
and open flame, and out of the reach of children.
• Checkand add fuel beforestarting the engine. Never
removegas capor add fuel while the engineis running.
Allowenginetocoolat leasttwo minutesbeforerefueling.
• Replacegasolinecap securely and wipe off any spilled
gasolinebeforestartingthe engineasit maycauseafire or
explosion.
• Extinguishall cigarettes,cigars,pipesandothersourcesof
ignition.
• Neverrefuel unit indoors becauseflammablevapors will
accumulateinthearea.
• Never store the machineor fuel container inside where
there is an open flameor spark such as a gas not water
heater,clothesdryerorfurnace.
• Neverrunyour machinein anenclosedareaastheexhaustfrom
the engine contains carbon monoxide,which is a odorless.
tastelessanddeadlypoisonousgas.
• To reducefire hazard,keepenginearia muffler free of leaves.
grass,andotherdebrisbuild-up, Cleanupfueland oi!spillage.
Allowunitto coolat least5 minutesbeforestoring.
• Beforecleaning, repairing, or inspecting, makecertain the
=rop!!letand all moving parts flare stopped. Disconnectthe
sparkplug wireand keepwireawayfrom spark plugto prevent
accidentalstarting. Donotuseflammablesolutionsto cleanair
filter.
• Keepall nuts.bolts,andscrewstightto besuretheequipmentis
in safeworkingcondition.
• Nevertamperwith safetydevices. Checktheir properoperation
regularly.
• After strikinga foreignobject,immediatelystop theengine,dis-
connectthesparkplugwirefrom thesparkplug,andthoroughly
respectthe unitfor anydamage. Repairdamagebeforestarting
anooperatingunit.
• Donot alteror romperwith theengine'sgovernorsetting. The
governor controlsthe maximum safeoperatingspeedof the
engine. Over-speedingthe engineis dangerousand will cause
damageto theengineandto othermovingpartsofthemachine.
• Checkthe vacuumDogfrequentlyfor wear. Replaceif wornor
damaged.
• KeepvacuumbagfreeofdebriswhennotJnuse.
SAF_ _ WARNING -- YOURRESPONSmluTY
Restrictthe useof this power machineto personswho read,
understand and follow the warmngs and instructionsin this
manualandonthemachine.
CONGRATULATIONS on your purchase of a Sears
Craftsman Chipper-Vacuum. It has been designed,
engineered and manufactured to give you the best possible
dependability and performance.
Should you experience any problem you cannot easily rem-
edy, please contact your nearest Sears Service Center/
Department in the United States, We have competent, well-
trained technicians and the proper tools to service or repair
this unit.
Please read and retain this manual. The instructions will
enable you to assemble and maintain your chipper-vacuum
properly. Always observe the "SAFETY RULES."
MODEL
NUMBER 247.799640
SERIAL
NUMBER
DATE OF
PURCHASE
THE MODEL AND SERIAL NUMBERS WILL BE FOUND
ON A LABEL ATTACHED TO THE FRAME OF THE
CHIPPER-VACUUM.
YOU SHOULD RECORD BOTH SERIAL NUMBER AND
DATE OF PURCHASE AND KEEP IN A SAFE PLACE
FOR FUTURE REFERENCE.
CUSTOMER RESPONSIBILITIES
• Read and observe the safety rules.
• Follow a regular schedule in maintaining, caring for
and using your chipper-vacuum.
• Follow the instructions under "Customer Respon-
sibilities" and "Storage" sections of this Owner's
Manual.
PRODUCT SPECIFICATIONS
Horsepower: 9.0
Engine Oil Capacity: SAE 30
API Classification SF, SG or SH (26 Ounces)
Fuel Capacity: Approximately 1 Gallon
(Unleaded)
Spark Plug (Gap .030 in.): Champion
J-8C (or
Equivalent)
Tire Pressure: 24 p.s.i.
MAINTENANCE AGREEMENT
A Sears Maintenance Agreement is available on this
product. Contact your nearest Sears store for details,
WARNING: This unit is equipped with an internal combus-
tion engine and should not be used on or near any unim-
proved 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 effec-
tive 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
through your nearest Sears Authorized Service Center (See
the REPAIR PARTS section of this manual.)
WARRANTY
FULLONEYEAR WARRANTY ON CRAFTSMAN GASCHIPPER-VACUUM
For one year from the date of purchase, when this Craftsman chipper-vacuum is maintained, ]ubricated, and
tuned up according to the operating and maintenance instructions in the operator's manual, Sears will repair,
free of charge, any defect in material or workmanship.
This warranty excludes the chipper blades, flails, air cleaners, spark plugs, catcher bags and tires, which are
expendable parts and become worn during normal use.
If this chipper-shredder is used for commercial or rental purposes, this warranty applies for only 30 days from
the date of purchase.
WARRANTY SERVICE IS AVAILABLE BY CONTACTING THE NEAREST SEARS SERVICE CENTER IN THE
UNITED STATES. THIS WARRANTY APPLIES ONLY WHILE THIS PRODUCT IS IN USE IN THE UNITED
STATES.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
SEARS ROEBUCK AND CO., DEPT. 817WA, HOFFMAN ESTATES, IL 60179
i
TABLE OF CONTENTS
SAFETY RULES ..................................................... 2, 3
PRODUCT SPECIFICATIONS ................................... 4
MAINTENANCE AGREEMENT .................................. 4
CUSTOMER RESPONSIBILITIES ................. 4, 12. 13
WARRANTY ............................................................... 4
INDEX ......................................................................... ,5
ACCESSORIES .......................................................... 5
ASSEMBLY ............................................................. 6-8
OPERATION ......................................................... 8-11
CUSTOMER RESPONSIBILITt ES ..................... 12, 13
STO RAG E ................................................................ 14
SERVICE AND ADJUSTMENT ........................... 14-17
TROUBLE SHOOTING ............................................. 18
PARTS ORDERI NG/SERVICE ................................. 18
REPAIR PARTS--CHIPPER-VACUUM .............. 19-25
REPAIR PARTS--ENGINE ................................. 26-29
ill l
INDEX
=
A
Accessodes ................................................................ 5
Adjustments:
Carburetor ............................................................. 17
Clutch Cable ........................................................... 7
Engine Speed ....................................................... 17
Shift Rod ............................................................... 16
Assembly Instructions .............................................. 6-8
C
Catcher Bag ............................................................ 7, 8
Controls ...................................................................... 9
Customer Responsibilities .............................. 4, 12, 13
E
Engine:
Lubrication ............................................................ 12
Maintenance ................................................... 12. 13
Starting ................................................................. 11
Stopping ............................................................ 9.11
Storage ................................................................. 14
F
Fuel ........................................................................... 10
L
Lubrication ................................................................ 12
M
Maintenance:
Agreement ............................................................. 4
Schedule ............................................................... 12
Engine ............................................................. 12, 13
Chippet'-Vacuum .................................................. 12
O
Oil ............................................................................. 10
Operating Tips ...................................................... 9, 10
R
Repair/Replacement Parts .................................. 19-29
Responsibilities, Customer ............................ 4, 12, 13
S
Safety Rules ........................................................... 2, 3
Sharpening ............................................................... 15
Spark Plug ................................................................ 13
Specifications .............................................................. 4
Storage ..................................................................... 14
T
Table of Contents ....................................................... 5
Trouble Shooting ...................................................... 18
U
Unclogging .......................................................... 14, !5
Unpacking ................................................................... 6
W
Warranty .................................................................... 4
i=lu=
ACCESSORIES
These accessories were available when the chipper-vacuum was purchased. They are also available at most
Sears retail outlets catalog and service centers. Most Sears stores can order repair parts for you, when you
provide the model number of your chipper-vacuum.
Spark
Plug
w
Air Muffler
Filter
ENGINE
Engine[ Gas Can
Oil I
Stabilizer
CHIPPER-VACUUM
Vacuum
Hose
Kit
ASSEMBLY INSTRUCTIONS
i
Hub
Bag
FIGURE 1.
Rex
Lock
Cupped
Washer
Cupped
Side
FIGURE 2.
Nozzle
FIGURE 3.
Front Wheels
Wheel Bracket
Wave
Washer
Shoulder
Bolt
Hub
Wing Nuts
iiii
IMPORTANT: This unit is shipped WITHOUT GASO-
LINE or OIL in the engine. After assembly, see opera-
tion section of this manual for proper fuel and engine
oil recommendations.
NOTE: To determine right and left hand sides of your
chipper-vacuum, stand behind and face the unit
(Refer to figure 7).
Your chipper-vacuum has been completely assem-
bled at the factory except for the front wheels, hub
caps, nozzle, chipper chute, support bracket and bag.
A pair of safety glasses and bottle of oil are also
included in the carton.
TOREMOVECHIPPER-VACUUMFROMCARTON
Cut the corner of the carton. Remove all packing
inserts and loose parts. Push down on handle to lift
front of chipper-vacuum, and roll chipper-vacuum out
of the carton. Make certain all parts and literature
have been removed before the carton is discarded.
TOOLS REQUIRED FOR ASSEMBLY
(1) 3/4" Open End Wrench
(2) 1/2" or Adjustable Wrenches
(1) 9/16" Wrench
(1) Funnel
LOOSE PARTSIN CARTON(SeeFigure1)
(2) Front Wheels (1) Bag
(2) Hub Caps-I (1) Shift Knob1-
(1) Nozzle (1) Tamper Plug-i-
(1) Chipper Chute (1) Safety Glasses-I"
(1) Support Bracket (1) Bottle of Oil
tNot Shown
HOWTO SET-UPYOURCHIPPER-VACUUM
ATTACHING THE FRONT WHEELS
• Tilt unit backward so that it rests on the handle
(place a piece of the carton under handle to avoid
scratches). Remove the cardboard packing
material around the wheel brackets.
• Remove the hex lock nuts and shoulder bolts from
the front of the wheel brackets. See figure 2.
• Place wave washer on shoulder bolt. Insert
shoulder bolt through wheel, with the head of the
shoulder bolt through the flat side of the wheel.
• Assemble wheel to outside of wheei bracket.
Secure with cupped washer (cupped side of
washer goes against the bracket) and hex lock nut.
Tighten.
• Align the four tabs on the hub caps with the four
holes in the wheel. Press in each tab until it locks in
place. The hub cap edges must be flush with the
wheel rim when installed properly.
ATTACHING THE NOZZLE (See figure 3)
• Remove the three plastic wing nuts from the front
of the chipper-vacuum. Place the nozzle in position
over the three weld studs. Secure with the wing
nuts just removed.
NOTE: The metal tab in the nozzle must depress the
safety switch on the front of the chipper-vacuum or
the engine will not start.
• Set unit in upright position.
Upper Handle
i
_Chiploer
Chute
jpporl
racket
FIGU RE 4.
"Z" End
of Cable
Hole in Drive
Clutch Handle
O
Nuts
Cable is
Straight
FIGURE 5.
Nuts
Rib
Bag
Discharge
Chute
..J Drawstring
FIGURE 6.
He)( Bolts, Flat
its
HexNuts
Nuts t/
Drive
Clutch
Handle
Drive
Clutch Handle
/
7
ATTACHING THE CHIPPER CHUTE AND
SUPPORT BRACKET (See figure 4)
• Remove the two hex !ock nuts from the hex bolts
which secure the right side of the upper handle to
the lower handle, Leave bolts and washers in
place.
• Remove three cupped washers and 5/16" hex nuts
from the weld studs beside the opening on the right
side of the chipper-vacuum,
• Place the chipper chute in position over the weld
studs (slot goes at the bottom). Secure with cupped
washers and hex nuts just removed.
NOTE: Only tighten the three nuts one or two threads
for ease of further assembly.
NOTE: Cupped side of the washer goes against the
chipper chute. See figure 2 to identify cupped side of
washer,
• Remove the two hex bolts, flat washers and nuts
which are attached to the support bracket.
• Attach the support bracket to the bottom of the
chipper chute loosely using the hardware removed
previously. HEADS OF THE HEX BOLTS AND
WASHERS GO TO THE INSIDE OF THE
CHIPPER CHUTE.
• Place the support bracket over the [wo bolts in the
handle. Pushing UP on the chipper chute will aid
the alignment of the holes in the support bracket
with the bolts in the handle.
• Tighten all hardware securely on the chipper chute,
support bracket and handle.
ATTACHING THE CLUTCH CABLE
The clutch cable has been assembled at the factory.
Loosen the hex nuts at the cable bracket. Hook the
"Z" end o_=the cable into the drive clutch handle from
the outside to the inside as shown in figure 5A. Pliers
will aid in assembly.
CLUTCH CABLE ADJUSTMENT
Adjust the hex nuts at the cable bracket so there is no
slack in the cable, but the cable is NOT tight. Do not
overtighten the cable. See figure 5B.
To check the clutch adjustment, oroceed as follows.
• Push tl_e chipper-vacuum backward and forward
with the drive clutch handle released. It should
move freely.
If it does not, loosen both hex nuts at the cable
bracket. See figure 5B. Turn bottom nut counter-
clockwise to loosen the cable.
• Engage the drive clutch handle (hold against upper
handle), and try to push chipper-vacuum backward
and forward. The wheels should lock up.
If the wheels do not lock up, loosen both hex nuts
at the (:able bracket, Turn bottom nut clockwise to
tighten the cable.
• Recheck adjustment, Tighten both hex nuts when
correct adjustment is reached.
Stra Straps on
aps on Shift Knob_ Baa
Upper Handle / I
FIGURE 7.
FIGURE 8.
i
OPERATION
ATTACHING THE BAG
• Place bag inside of handle assembly. Slip the
opening on the bag over the discharge chute, mak-
ing certain it is over the rib on the discharge chute.
See figure 6.
• Place the four straps on the top of the bag over
upper handle, hooking them on studs. See figure 7.
NOTE: Be sure the bag goes under the drive clutch
handle.
• Squeeze the clamp on the drawstring, and puff the
drawstring tight. Release the clamp.
INSTALLING THE SHIFT KNOB
Remove the cardboard protecting the threads. Thread
the shift knob onto the end of the shift lever.
TAMPER PLUG
The handle on the tamper plug must be in the vertical
position as shown in figure 8. To determine which
side of the tamper plug is up, match the angle of the
tamper plug to the angle of the chipper chute.
insert the tamper plug into the chipper chute. Tamper
plug should remain in the chipper chute whenever the
chipper chute is not in use.
==1
KNOW YOUR CHIPPER-VACUUM
READ THIS OWNER'S MANUAL AND SAFETY RULES BEFORE OPERATING YOUR CHIPPER-VACUUM.
Compare the illustrations with your chipper-vacuum to familiarize yourself with the location of various controls and
adjustments. Save this manual for future reference.
Shift
Lever
Drive Clutch
Handle
Chipper
Chute
Oil
Dipstick
Choke
Starter
Han<
Spark Plug
Boot
FIGURE 9.
Nozzle
Fast
MEETSANSI SAFETY STANDARDS
Sears chipper-vacuums conform to the safety standards of the American National Standards InsUtute.
OPERATINGCONTROLS(See figure 9)
SHIFT LEVER--The shift lever determines ground
speed. It may be placed in one of eight positions.
Forward--one of six speeds. Position number one (1)
Esthe slowest. Position number six (6) is the fastest.
Reverse--two reverse (R) speeds. "R" (all the way to
the right) is the faster of the two.
DRIVE CLUTCH HANDLE (BAIL)--Squeezing the
drive clutch handle against the upper handle engages
the wheel drive. Release the drive clutch handle to
stop the forward ddve.
CHOKE LEVER--Used to enrich the fuel mixture in
the carburetor when starting a cold engine.
STARTER HANDLE--Used to manuatty start the
engine.
THROTTLE CONTROL--Controls engine speed and
stops the engine.
BEFORE USING YOUR CHIPPER-VACUUM, AGAIN REFER TO THE "SAFETY RULES" AS SHOWN ON
PAGE 2 OF THIS MANUAL. ALWAYS BE CAREFUL.
The operation of any chipDer-vacuurr can result in foreign objectsbeing thrown into the eyes, which
can result in severe eye damage. Always wear the safety glasses providedwith the chipper-vacuum or
eye shields before chi_pJng, or while _erforming any adjustments er repairs We recommend Wide
Vision SafetyMask for over spectacles or standard glasses availableat Sears Retail er Catalog Stores.
TOSTOPENGINE
• Move throttle control lever to STOP position. See
figure 9.
• Disconnect spark plug wire and move away from
spark plug to prevent accidental starting while
equipment is unattended.
HOW TO USEYOUR CHIPPER-VACUUM
_IL WARNING: YOUR CHIPPER-VACUUM iS
EQUIPPED WITH A SAFETY SWITCH ON
THE FRONT OF THE HOUSING, NOZZLE
OR HOSE ATTACHMENT MUST BE IN
PLACE ON THE CHIPPER-VACUUM
BEFORE THE ENGINE CAN BE STARTED.
TO ENGAGE DRIVE
IMPORTANT: Always release the drive clutch
handle before moving the shift lever.
• With the engine running near top speed, move shift
lever into one of the six FORWARD _ositions or
two REVERSE positions. Select a speed appropri-
ate for the conditions that exist. Use the slower
speeas until you ere familiar with the operation of
the chipper-vacuum.
e To engage the wheel drive, hold the drive clutch
handle against the chipper-vacuum handle.
Releasing the drive clutch handle stops the wheels
from driving. Retease the drive clutch handle to
slow down when negotiating an obstacle making a
turn or stopping. Engage slowly to prevent front
wheels from lifting up.
NOZZLE HEIGHT ADJUSTMENT
The height adjustment knob is located on the right
hand side of the chipper-vacuum. See figure 10. Tun-
the knob clockwise to raise the nozzle. Turn the knob
counterclockwise to lower. (Be careful not to turf
knob too far--rod could come out of ferrule.)
9
The best height for the nozzle will vary according to
the conditions. Adjust the height of the nozzle to find
the setting which gives the best performance for the
operating conditions. In general, raise the nozzle to
vacuum a thick layer of leaves; lower the nozzle for
smooth surfaces.
Height
Adjustment
Knob
i!
FIGURE 10.
USING THE CHIPPER CHUTE
Do not a_empt to chip any materiel other than vegeta-
tion found in a normal yard (i.e., branches, leaves,
twigs, etc.). Matedal such as stalks or heavy branches
up to 3" in diameter may be fed into the chipper
chute. See figure 11
WARNING: MATERIAL UP TO A MAXI-
MUM OF 3" IN DIAMETER MAY BE FED
INTO THE CHIPPER CHUTE. DO NOT
ATTEMPT TO CHIP ANY MATERIAL
LARGER THAN 3" IN DIAMETER,
PERSONAL INJURY OR DAMAGE TO
THE MACHINE COULD RESULT,
If necessary, use the tamper plug provided to push
material into the chipper chute. See figure 8. NEVER
PLACE HANDS INSIDE CHIPPER CHUTE. PIace
tamper plug inside chipper chute when not in use to
deaden the sound.
FIGURE 11.
IMPORTANT: There is a flail screen located inside
the housing in the discharge area. If the flail screen
becomes clogged, remove and clean as instructed in
the Service and Adjustment section on page 14.
For best performance, it is important to keep the
chipper blades sharp. If the composition of the
material being discharged changes (becomes stringy,
etc.) or if the rate at which the material is discharged
slows down considerably, it is likely that the chipper
blades are dutl and need to be sharpened or
replaced. Refer to Service and Adjustments sections.
TO EMPTY BAG
Open the large zipper on the bag to empty the bag.
See figure 12. Be certain the zipper is closed when
operating the unit.
FIGURE 12.
GASAND OIL FILL-UP
OIL
Only use high quality detergent oil rated with API
service classification SF, SG or SH. Select the oil's
viscosity grade according to your expected operating
temperature.
Colder < 32°F _- Warmer
5W30 SAE 30
NOTE: Although multi-viscosity oils (5W30, 10W30,
etc.) improve starting in cold weather, these multi-
viscosity oils will result in increased oil consumption
when used above 32°F. Check your oil level more
frequently to avoid possible engine damage from
running low on oil.
• Use engine oil provided. Remove oil fill dipstick.
See figure 13. With chipper-vacuum level, use a
funnel to fill engine with oilto FULL mark on dipstick.
Capacity is approximately 26 ounces. Be careful not
to overfill. Oil bottle provided contains 27 oz. of oil.
Tilt chipper-vacuum toward the left (from behind the
hopper), then re-level. Check oil level. Refill to FULL
mark on dipstick if necessary. Replace dipstick and
tighten.
10
Oil
Fill
Dipstick
Oil
Drain
FIGURE 13.
GAS
• Remove fuel cap and fill fuel tank with approxi-
mately 1 gallon of clean, fresh, lead-free grade
automotive gasoline. DO NOT use Ethyl or high
octane gasoline. Be certain container is clean and
free from rust or foreign particles. Never use gaso-
line that may be stale from tong periods of storage
in the container. Replace fuel cap.
_L WARNING: DO NOT FILL CLOSER THAN
1/'2 INCH OF TOP OF FUEL TANK TO
PREVENT SPILLS AND TO ALLOW FOR
FUEL EXPANSION. IF GASOLINE IS
ACCIDENTLY SPILLED, MOVE CHIPPER-
VACUUM AWAY FROM AREA OF SPILL.
AVOID CREATING ANY SOURCE OF
IGNITION UNTIL GASOLINE VAPORS
HAVE DISAPPEARED.
Check the fuel level periodically to avoid running out
of gasoline while operating the chipper-vacuum. If the
unit runs out of gas as it is chipping, it may be neces-
sary to unclog the unit before it can be restarted.
Refer to "Removing the Flail Screen" in SERVICE
AND ADJUSTMENT section.
WARNING: EXPERIENCE INDICATES THAT ALCO-
HOL BLENDED FUELS (CALLED GASOHOL OR
USING ETHANOL OR METHANOL) CAN ATTRACT
MOISTURE WHICH LEADS TO SEPARATION AND
FORMATION OF ACIDS DURING STORAGE.
ACIDIC GAS CAN DAMAGE THE FUEL SYSTEM
OF AN ENGINE WHILE IN STORAGE. TO AVOID
ENGINE PROBLEMS, THE FUEL SYSTEM
SHOULD BE EMPTIED OR TREATED WITH FUEL
STABILIZER BEFORE STORAGE FOR 30 DAYS
OR LONGER. USE FRESH FUEL NEXT SEASON.
SEE "STORAGE" SECTION FOR ADDITIONAL
INFORMATION.
NEVER USE ENGINE OR CARBURETOR CLEAN-
ER PRODUCTS IN THE FUEL TANK OR PERMA-
NENT DAMAGE MAY OCCUR,
TO STARTENGINE
IMPORTANT: IF UNIT SHOWS ANY SIGN OF
MOTION WITH THE CLUTCH HANDLE DISEN-
GAGED, SHUT ENGINE OFF IMMEDIATELY.
READJUST AS INSTRUCTED IN THE "FINAL
ADJUSTMENTS" SECTION OF THE ASSEMBLY
INSTRUCTIONS.
&
WARNING: BE SURE NO ONE OTHER
THAN THE OPERATOR IS STANDING
NEAR THE CHIPPER-VACUUM WHILE
STARTING OR OPERATING. DO NOT
OPERATE THIS CHIPPER-VACUUM
UNLESS THE NOZZLE, DISCHARGE
CHUTE AND BAG HAVE BEEN PROPER-
LY INSTALLED.
• Attach spark plug wire and rubber boot to spark
plug if necessary. See figure 9.
• Place the throttle control lever in FAST position.
• Move choke lever to CHOKE position (See figure
14).
• Place one foot on the left rear wheel to 0revent the
unit from skidding while starting.
• Grasp starter handle and pull rope out slowly until
engine reaches start of compression cycle (rope
will pull slightly harder at this point). Let the rope
rewind slowly.
NOTE: A noise will be heard when finding the start of
the compression cycle. This noise is caused by the
flails and fingers which are part of the shredding mech-
anism failing into place, and should be expected. In
addition, the flails and fingers will be noisy after the
engine is started, until the impeller reaches full speed.
• Pull rope with a rapid, continuous, full arm stroke.
Keep a firm grip on start handle. Let rope rewind
slowly. Do not let starter handle snap back against
starter.
• Repeat preceding two instructions until engine
fires. When engine starts, move choke lever on
engine hatfway between CHOKE and OFF.
NOTE: ff engine does not fire after three attempts,
move choke lever halfway between CHOKE and OFF
position and try again.
• Move throttle control to IDLE position for a few min-
uzes warm-up. Move choke lever to OFF position
as engine warms up.
NOTE: In order to idle smoothly, a new engine may
require 3 to 5 minutes running above slow idle speed.
Idle speed has been adjusted to be correct after this
break-in period.
Full Choke Off
Position Position
Lever
FIGURE 14,
TO STOP ENGINE
• Move throttle control lever to STOP position.
• Disconnect spark plug wire and move away from
spark plug to prevent accidental starting while
equipment is unattended.
11
CUSTOMER RESPONSIBILITIES
,,==,=o=,==
. *
==.0=====v,c= O" o..==
F-
_ Oil Pivot Points "J
a
O
_: Clean Chipper-Vacuum _/ _
Check Engine Oil _/
Change Engine Oil _/ _J
UJ
Service Air Cleaner _/
z Clean Engine Cylinder q _/
ug
Spark Plug _/ ._I
Muffler _/
_/ CHECK
GENERALRECOMMENDATIONS
Colder _ 32°F _- Warmer
_b WARNING: ALWAYS STOP THE ENGINE
AND DISCONNECT THE SPARK PLUG
WIRE BEFORE PERFORMING ANY
MAINTENANCE OR ADJUSTMENTS.
• Periodically check all fasteners and be sure they
are tight.
• Follow the Maintenance Schedule above.
CHIPPER-VACUUM
LUBRICATION
Lubricate the pivot points on the height adjustment
mechanism once a season using a light oil.
CLEANING
• Clean the chipper-vacuum thoroughly after each
use.
• Wash the bag periodically with water. Allow to dry
thoroughly in the shade. Do not use heat.
ENGINE
ENGINE OIL
Only use high quality detergent oil rated with API
service classification SF, SG or SH. Select the oil's
viscosity grade according to your expected operating
temperature.
5W30 SAE 30
NOTE: Although multi-viscosity oils (SE30, 10W30,
etc.) improve starting in cold weather, these multi-
viscosity oils will result in increased oil consumption
when used above 32°F. Check your oil level more
frequently to avoid possible engine damage from
running low on oil.
Your four-cycle engine will normally consume some
oil--therefore, check engine oil level regularly approx-
imately every five hours of operation and before each
usage. Stop engine and wait several minutes before
checking oil level. With engine level, the oil must be to
FULL mark on dipstick (refer to figure 10). Change
engine oil after the first five hours of operation, and
every twenty-five hours thereafter.
To Drain Oil:
® Drain oil while engine is warm.
a. Remove oil drain cap. Refer to figure 10. Catch
oil in a suitable container.
b. When engine is drained of all oil, replace drain
cap securely.
• Refill with fresh oil. Refer to GAS AND OIL FILL-
UP section.
• Replace dipstick.
12
AIR CLEANER
The air cleaner prevents damaging dirt, dust, etc.,
from entering the carburetor and being forced into the
engine and is important to engine life and per-
formance.
Never run your engine without air cleaner com-
pletely assembled.
To Service Air Cleaner;
Service pre-cleaner after every 25 hours of use, or at
least once a season. Replace filter every 100 hours of
use, or at least once a season. Service pro-cleaner and
filter more often under dusty conditions.
• Remove wing nut and cover. See figure 15.
• Slide pre-cleaner off filter. Clean the inside of base
and cover thoroughly.
• Clean pre-cleaner as follows.
Wash in water and detergent solution, and squeeze
(do not twist) until air dirt is removed.
Rinse thoroughly in clear water.
Wrap in a clean cloth and squeeze (do not twist)
until completely dry, or allow to air dry.
e If necessary, replace filter (do not attempt to ctean).
• Install new filter on base. Slide pre-cleaner over
filter.
• Install cover and wing nut. Tighten wing nut
securely.
WARNING: PERIODICALLY CLEAN MUF_
FLER AREA TO REMOVE ALL GRASS,
DIRT AND COMBUSTIBLE DEBRIS.
Cool
FIGURE 16.
SPARK PLUG
The spark plug should be cleaned and the gap reset
to .030" at least once a season or every 50 hours of
operation. See figure 17. Spark plug replacement is
recommended at the start of each season. Refer to
engine parts list for correct spark plug type.
NOTE: Do not sandblast spark plug. Spark plug
should be cleaned by scraping or wire brushing and
washing with a commercial solvent.
Feeler Gauge
Base Filter Pre-Cleaner Wing
I Nut
FIGURE 15.
Cover
CLEAN ENGINE
Clean engine periodicallY. Remove dirt and debris
with a cloth or brush. Cleaning with a forceful spray of
water is not recommended as water could contami-
nate the fuel system.
Yearly or every 25 hours, whichever occurs first,
remove the air intake screen and blower housing, and
clean the areas shown in figure 16 to avoid over-
speeding, overheating and engine damage. Clean
more often if necessary.
FIGURE 17.
Plug
MUFFLER
Do not operate the chipper-vacuum without a muffler
or tamper with the exhaust system. Damaged mufflers
or spark arrestors could create a fire hazard. Inspect
periodically, and replace if necessary. If your engine
is equipped with a spark arrester screen assembly,
remove every 50 hours for cleaning and inspection.
Replace if damaged.
13
ii , =1,i, i
STORAGE
.... ii i
Prepare your chipper-vacuum for storage at the end
of the season or if the unit will not be used for 30 days
or more.
WARNING: NEVER STORE MACHINE
WITH FUEL IN THE FUEL TANK INSIDE
OF BUILDING WHERE FUMES MAY
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,
ETCo
NOTE: A yearly check-up by your local Sears Service
Center is a good way to make certain your chipper-
vacuum will provide maximum performance for the
next season.
CHIPPER-VACUUM
• Clean the chipper-vacuum thoroughly.
• Wipe unit with an oiled rag to prevent rust (use a
light oil or silicone).
ENGINE
.... i
e Drain the fuel tank.
• Start the engine and let it run until the fuel lines and
carburetor are empty.
• Never use engine or carburetor cleaner products in
the fuel tank or permanent damage may occur.
• Use fresh fue! next season.
NOTE: Fuel stabilizer is an acceptable alternative in
minimizing the formation of fuel gum deposits during
storage. Add stabilizer to gasoline in fuel tank or stor-
age container. Always follow the mix ratio found on
stabilizer container. Run engine at least 10 minutes
after adding stabilizer to allow the stabilizer to reach
the carburetor. Do not drain the gas tank and carbure-
tor if using fuel stabilizer,
e Drain all the oit from the crankcase (this should be
done after the engine has been operated and is still
warm) and refill the crankcase with fresh oil.
o If you have drained the fuel tank, protect the inside
of the engine as follows. Remove spark plug, pour
approximately 1/2 ounce (approximately one table-
spoon) of engine oit into cylinder and crank slowly
to distribute oil. Replace spark plug.
IMPORTANT: IT IS IMPORTANT TO PREVENT
GUM DEPOSITS FROM FORMING IN ESSENTIAL
FUEL SYSTEM PARTS SUCH AS CARBURETOR,
FUEL FILTER, FUEL HOSE, OR TANK DURING
STORAGE. ALSO, EXPERIENCE INDICATES THAT
ALCOHOL BLENDED FUELS (CALLED GASOHOL
OR USING ETHANOL OR METHANOL) CAN
ATTRACT MOISTURE WHICH LEADS TO SEPARA-
TION AND FORMATION OF ACIDS DURING
STORAGE. ACIDIC GAS CAN DAMAGE THE FUEL
SYSTEM OF AN ENGINE WHILE IN STORAGE.
OTHER
• Do not store gasoline from one season to another.
e Replace your gasoline can if your can starts to rust.
Rust and/or dirt in your gasoline will cause problems,
o Store unit in a clean, dry area. Do not store next to
corrosive materials, such as fertilizer.
NOTE: If storing in an unventilated or metal storage
shed, be certain to rustproof the equipment by coating
with a light oi! or silicone.
........ iiii i ..........
SERVICE & ADJUSTMENT
...... , u_ .
WARNING: ALWAYS STOP ENGINE AND
DISCONNECT SPARK PLUG WIRE AND
MOVE IT AWAY FROM SPARK PLUG
BEFORE PERFORMING ANY ADJUST+
MENTS OR REPAIRS.
REMOVINGTHEFLAILSCREEN
If the discharge area becomes clogged, remove the
flail screen and clean area as follows.
• Stop the engine. Make certain the chipper-vacuum
has come to a complete stop. Disconnect the spark
plug wire before unclogging the discharge chute.
• Remove the vacuum bag from the unit.
• Remove the four self-tapping screws from the
bottom of the discharge chute, and the hex bolt, flat
washer and hex nut from the top. (Be careful not to
drop the hardware into the chute.) Remove the dis-
charge chute assembly. See figure 18.
14
Discharge
Chute
Assembly
Belt
Cover
HexBolt
FlatWasher
FlexNut
FIGURE18.
npping
Screws
!
• Remove the two hex bolts and hex nuts which
extend through the housing. Lift the flail screen
from inside the housing. See figure 19.
Flail Screen
Hex Bolts
Hex Nuts
Self-Tapping
Screws
FIGURE 20.
• Remove the access plate by removing two hex lock
nuts. See figure 21.
Hex
Nuts
FIGURE 19.
• Clean the screen by scraping or washing with
water. Reinstall the screen.
NOTE: Be certain to reassemble the flail screen with
the curved side down as shown in figure 19:
SHARPENING OR REPLACING CHIPPER BLADES
• Disconnect the spark plug wire and move away
from the spark plug.
• Remove the flail screen as instructed in the previ-
ous section.
• Remove the plastic belt cover on the front of the
engine by removing the two self'tapping screws.
See figure 20.
FIGURE 21.
15
• Locate one of the ch!pper blades in the access
plate opening by rotating the impeller assembly by
hand. Remove the blade using a 3/16" allen
wrench on the outside of the blade and 1/2" wrench
on the impeller assembly, inside the housing.
Torque hardware to 250-350 inch pounds.
• Remove the other blade in the same manner.
Replace or sharpen blades, ff sharpening, make
certain to remove an equal amount from each
blade. Reassemble in reverse order.
NOTE: Make certain blades are reassembled with the
sharp edge facing upward, as viewed from the access
plate opening.
CHAHGIHG THE FRICTION WHEEL RUBBER
The rubber on the friction wheel is subject to wear
and should be checked after 50 hours of operation,
and periodically thereafter. Replace friction wheel
rubber if any signs of wear or cracking are found.
• Drain the gasoline and oil from the chipper-
vacuum.
• Tip the unit backward so it rests on the handles.
• Remove the frame cover by removing eight self-
tapping screws from underneath the chipper-
vacuum. See figure 22.
FIGURE 22.
Frame Cover
• Remove the gear shaft from the unit by removing
the hex bolts, lock washers and flat washers from
each side of the frame. See figure 23. Hold the fric-
tion wheel assembly, and slide the gear shaft out of
the unit toward the right side.
F_cti I I
FIGURE 23.
• Remove the six screws from the friction wheel
assembly (three from each side). Remove the fric-
tion wheel rubber from between the friction wheel
plate.
• Reassemble new friction wheel rubber to the fric-
tion wheel assembly, tightening the six screws in
rotation and with equal force.
• Slide the friction wheel assembly up onto the shift
mechanism, then slide the gear shaft back into the
unit. Reassemble in reverse order.
• Readjust the clutch cable. Refer to adjustment sec-
tion.
CLUTCH CABLEADJUSTMENT
To adjust the clutch cable, refer to the "Crutch Cable
Adjustment" section of Assembly instructions.
SHIFT ROD ADJUSTMENT
If the shift rod needs adjustment to obtain forward or
reverse correctly, proceed as follows. See figure 24.
• Remove the bag from the unit.
• Remove the hairpin clip and flat washer from the
upper end of the shift rod. Pull the ferrule out of the
hole in the shift lever. (Make certain wave washer
remains in place on the ferrule.)
• Place the shift lever in 6th position (all the way to
the left).
o Push down on the shift rod, Thread the ferrule up
or down the shift rod until the ferrule lines up with
the upper hole in the shift lever.
• Secure ferrule to shift lever with flat washer and
hairpin clip.
• If you cannot obtain proper adjustment, remove the
gasoline and oil from the engine. Tip the unit back-
ward so it rests on the handle. Remove the bottom
frame cover. Check to see that nit of the rubber on -
the friction wheel on the aluminum plate when the
shift lever is in the 6th position. Adjust the ferrule
on the shift rod as needed. Reassemble,
Shift Lever
6th Position
Shift
BELTREMOVALAND REPLACEMENT
WARNING: Disconnect the spark plug
wire and move away from the spark plug.
• Remove the plastic belt cover on the front of the
engine by removing two self-tapping screws. Refer
to figure 19.
• Drain the gasoline and oil from the chipper-
vacuum.
• Tip the unit backward so that it rests on the
handles.
• Remove the frame cover by removing eight self-
tapping screws from underneath the chi0per-
vacuum. Refer to figure 14.
• Remove the idler pulley bracket as follows. See
figure 25.
• Take the tension off the belt by pivoting the
idler pulley toward you, and Iine up the holes in
the idler bracket assembly. Insert a nail or simi-
lar object through the holes to hold the idler
pulley in this position.
• Remove three self-tapping screws, and lift off
the idler bracket assembly.
Eng \ '
Bracket
Self-Tapping
Screws
Nail
FIGURE 25.
• Remove the hex bolt and lock washer from the
engine pulley. See figure 25. Slip the engine pulley
off the engine shaft, and remove the belt from the
pulley.
• Loosen the nut on the stop bolt until there is clear-
ance between the support bracket and the friction
wheel disc. See figure 26.
• Slip the belt between the friction wheel and friction
wheel disc. Remove and replace belt. Reassemble
following instruction in reverse order.
NOTE: The support bracket must rest on the stop bolt
after the new belt has been assembled.
Loosel
Nut
Stop Bolt
Support
Bracket
Friction
'Wheel Disc
FIGURE 26.
CARBURETORADJUSTMENT
,_ WARNING: IF ANY ADJUSTMENTS ARE
MADE TO THE ENGINE WHILE THE
ENGINE IS RUNNING (E.G. CARBURE-
TOR), KEEP CLEAR OF ALL MOVING
PARTS. BE CAREFUL OF HEATED SUR-
FACES AND MUFFLER.
The carburetor has been pre-set at the factory ancl
should not require adjustment. However, if your
engine does not operate properly due to suspecteC
carburetor problems, take your chipper-vacuum to
your nearest SEARS Service Center.
ENGINESPEED
Your engine speed has been factory set. Do not
attempt to increase engine speed or it may result ir
personal injury. If you believe the engine is running
too fast or too slow, take your chipper-vacuum to the
nearest SEARS Service Center for repair and adjust-
ment.
17
TROUBLE SHOOTING
PROBLEM CORRECTIVE ACTION
Engine tails to start
Loss of power;
operation erratic
POSSIBLE CAUSE(S)
• Fuel tank empty, or stale fuel.
• Spark plug wire disconnected.
• Faulty spark plug.
• Nozzle safety switch not depressed.
• Spark plug wire loose.
• Unit running on CHOKE.
• Blocked fuel line or stale fuel.
• Water or dirt in fuel system.
• Carburetor out of adjustment.
• Dirty air cleaner. •
Engine overheats • Carburetor not adjusted •
properly.
• Engine oil level low. •
Too much vibration • Loose parts or damaged •
impeller.
Unit does not • Discharge chute clogged. •
discharge
Rate of discharge
slows considerably or
composition of
discharged material
changes
• Foreign object lodged in impeller.
• Vacuum bag is full.
• Chipper blades dull.
• Fill tank with clean, fresh fuel.
• Connect wire to spark plug.
• Clean, adjust gap or replace.
• Adjust metal tab so it depresses the safety switch.
• Connect and tighten spark plug wire.
• Move choke lever to OFF position.
• Clean fuel line; fill tank with clean
fresh gasoline.
• Disconnect fuel line at carburetor to drain fuel
tank. Refill with fresh fuel.
• Adjust carburetor or contact your SEARS
Service Center.
Service air cleaner. See Customer Responsibilities
section of this manual.
Contact your SEARS Service Center.
Fill crankcase with proper oil.
Stop engine immediately and disconnect
spark plug wire. Tighten all bolts and nuts.
Make all necessary repairs. If vibration continues,
have unit serviced by a SEARS Service Center,
Stop engine immediately and disconnect
spark plug wire. Clean flail screen and inside
of blower housing. See Service/Adjustments
section of this manual.
Stop engine immediately and disconnect
spark plug wire. Remove lodged object.
Empty bag.
Sharpen or replace chipper blades.
NOTE: For repairs beyond the minor adjustments listed above, please contact your nearest SEARS Service Center.
HOW TO ORDER REPLACEMENT PARTS
Each chipper-vacuum has its own model number.
Each engine has itsown model number.
The model number for your chipper-vacuum will be
found on a label attached to the frame.
The model number for the engine will be found on the
blower housing of the engine.
Atl parts listed herein may be ordered through Sears,
Roebuck and Co. Service Centers and most Retail
Stores.
WHEN ORDERING REPAIR PARTS, ALWAYS GIVE
THE FOLLOWING INFORMATION:
*PRODUCT - "9 H.P. Chipper-Vacuum"
*MODEL NUMBER - 247.799640
*ENGINE MODEL NO. - 143.959003
*PART NUMBER
*PART DESCRIPTION
Your Sears merchandise has added value when you
consider that Sears has service units nationwide
staffed with Sears trained technicians...professional
technicians specifically trained on Sears products,
having the parts, tools and the equipment to insure
that we meet our pledge to you..."we service what we
sell ."
IF YOU NEED REPAIR
SERVICE OR PARTS:
REPAIR SERVICE
1-800-4-REPAIR
(1-800-473-7247)
ORDERING PARTS
1-800-FON-PART
(1-800-366-7278
18
SEARS CRAFTSMAN 9 H.P. CHIPPER-VACUUM MODEL NO. 247.799640
Repair Parts
REF,
NO.
1
2
3
4
5
6
7
8
9
10
11
t2
13
14
15
PART
NO.
1539-019
647-0019
649-0008
1649-0012
681-0076
710-0116
710-0380
710-0621
710-0896
710-3008
71143677
711-0737
712-0116
712-3004A
714-0104
DESCRIPTION
PUSHNUT
CONTROL ASSY
HANDLE ASSY-UPPER
HAN DLE ASSY-LOWER
BRACKET ASSY-SHIFT
QTY.
4
1
1
1
1
REF.
NO.
16
17
18
19
20
PART
NO,
720-0232
725-0157
735-0126
736-0264
736-0300
DESCRIPTION
KNOB-SHIFT
CABLE TIE
WASHER, RUBBER
WASHER-FLAT
WASHER-FLAT
SCREW-HEX
SCREW-HEX
SCREW-HEX
SCREW-HEX
SCREW-HEX
FERRULE
PIN-STUD
NUT-HEX LOCK
NUT-HEX LOCK
PIN-COTTER
4
2
1
2
4
1
4
1
11
2
21
22
23
24
25
26
27
28
29
736-0413
736-0451
738-0560
738-0561
741-0402
746-0921
747-0626
781-0626
784-0297
t
WASHER-SPRI NG
WASHER-SADDLE
SCREW-SHOULDER
NUT-SHOULDER
BEARING-FLANGE PLASTIC
CABLE-CLUTCH
ROD-SHIFT
COVER-SHIFT
HANDLE-SHIFT
19
QTY.
1
2
1
1
1
2
6
1
1
2
1
1
1
1
SEARS CRAFTSMAN 9 H.P. CHIPPER-VACUUM MODEL NO. 247.799640
Repair Parts
REF.
NO.
1
2
3
4
5
6
7
8
9
10
11
12
PART
NO.
629-0241
681-0059
681-0060
710-0382
710-0604
710_607
710-0772
712-1268
710-3008
712-0384
712-0421
712-3004A
REF. PART
DESCRIPTION QTY. NO. NO.
HARNESS--CHIPPER-VAC 1 13
HOUSING ASSY--INNER 1 14
HOUSING ASSY--OUTER 1 15
SCREW-HEX 2 16
SCREW-HEX SELF TAP 10 17
SCREW-HEX SELF TAP 8 18
SCREW-HEX 3 19
SCREW-HEX SELF TAP 2 20
SCREW-HEX 2 21
NUT-HEX LOCK 2 22
KNOB 3 23
NUT-HEX LOCK 4 24
2O
712-3010
719-0326
723-0438
725-1700
725-3166
726-0272
731-1613
736-0119
736-0242
781-0598
781-0599
781-0627
DESCRIPTION
NUT-HEX (GR 5)
SCREEN
SEAL-RUBBER
COVER-SWITCH
SNAP MOUNT SWITCH
CLAMP
COVER-SWITCH
WASHER-LOCK
WASHER-BELL
BLADE-FLAfL HOUSING
BLADE-FLAIL HOUSING
COVER-CHIPPER
QTY.
3
1
2
1
1
1
1
3
3
1
1
1
SEARS CRAFTSMAN 9 H.P. CHIPPER-VACUUM MODEL NO. 247.799640
Repair Parts
REF. PART
NO. NO. DESCRIPTION QTY.
1 681-0078 IMPELLER ASSY COMP.
(!NCL. REF. NOS. 2 THRU 12)
SCREW-HEX
WASHER-LOCK
WASHER-FLAT
IMPELLER ASSY
PIN-CLEVIS
SCREW-FLAT HEAD
NUT-HEX LOCK
PIN-ROLL SPRING
BLADE-FLAIL
WASHER-LOCK
BLADE-CHIPPER
2 710-1273
3 736-0217
4 736-0247
5 681-0078
6 711-0833A
7 710-1054
8 712-0411
9 715-0249
10 719-0329
11 736-0119
12 742-0544
1
1
1
1
1
3
4
4
3
3
4
4
®
®
REF. PART
NO. NO. DESCRIPTION QTY.
1 631-0029 NOZZLE ASS'Y.-VACUUM 1
2 731-1616 CHUTE-DISCHARGE 1
3 764-0473 BAG-VACUUM 1
FIEF,
NO. DESCRIPTION
PART
NO.
681-0068
710-0258
712-3027
731-1609
781-0625
731-1617
CHUTE ASSEMBLY
SCREW HEX
NUT-LOCK
CHUTE-CHIPPER UPPER
BRACKET SUPPORT
TAMPER PLUG (Not Shown)
1
2
3
4
5
QTY" t
5
= \
1
1
1
21
SEARS CRAFTSMAN 9 H.P. CHIPPER-VACUUM MODEL NO, 247.799640
Repair Parts
REF. i PART
NO. NO.
710-0230
1710-0723
710-0896
711-0758
_ 712-0266
712-3004A
719-0330
731-1584
_ 732-0745
1 736-0329
11 738-09O8
12 754-0256
13 756-0313
14 756-0649
15 781-0611
16 781-0614
DESCRIPTION QTY.
SCREW-HEX
SCREW-HEX
SCREW-HEX
NUT-HEX SHOULDER
NUT-HEX LOCK
NUT-HEX LOCK FLANGE
ADAPTER-MOU NTING
COVER-BELT
SPRING-TORSION
WASHER-LOCK
BOLT-IDLER
V-BELT
IDLER-FLAT
PULLEY
BRACKET-IDLER PIVOT
BRACKET-IDLER
1
1
5
1
1
1
1
1
1
1
1
1
I
1
1
1
\
\
REF. PART
NO. NO, DESCRIPTION
1
2
3
8
9
10
11
12
13
14
15
16
17
681-0070
I'710-0520
1710-0924
712_3004A
712-3005
1714-0115
i716-0104
720-0236
736-0270
736-0300
736-0369
738-0258
747-0631
750-0985
781-0605
QTY.
BRKT ASSY--WHEEL PIVOT 1
SCREW-HEX 1
SCREW-MACHINE PAN HD 1
SCREW-HEX 2
FERRULE--ADJUSTABLE 1
NUT-HEX FLANGE 2
NUT-HEX FLANGE LOCK 2
PIN-COTTER 1
RING-E 1
KNOB-PLASTIC 1
WASHER-BELL 1
WASHER-FLAT 2
WASHER-FLAT 2
SCREW-SHOULDER 1
ROD-ADJUSTABLE 1
SPACER 1
BRACKET-HEIGHT ADJ 1
22
SEARS CRAFTSMAN 9 H P CHIPPER,VACUUM MODEL NO 247,799640
Repair Parts
27
I
I ,I
!
9
8
I
i
23
SEARS CRAFTSMAN 9 H.P. CHIPPER-VACUUM MODEL NO. 247.799640
Repair Parts
REF.
NO.
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
PART
NO,
618-0063
618-0168
656-0009
756-0564
738-0865
741-0600
681-0055
681-0058
681-0069
681-0072
681-0073
684-0042
DESCRIPTION
BEARING ASSY-FRICTION
WHEEL
DIFFERENTIAL ASSY COMP.
DISC-FRICTION WHEEL
ASSY COMP.
DISC-FRICTION WHEEL
BOLT-SHOULDER
BEARING-BALL
BRACKET ASSY-SUPPORT
BRACKET ASSY-AXLE
SHAFT ASSY-SHIFT
ARM ASSY-SHIFT
FRAME ASSY
WHEEL ASSY-FRICTION
QTY.
1
1
1
2
1
1
1
1
REF.
NO.
20
21
22
23
24
25
26
27
28
29
3O
31
32
33
PART
NO.
1713-0330
713-0374
713-0415
714-0474
716-0102
716-0185
732-0264
736-0105
736-0119
736-0160
736-0267
i736-0287
i736-3089
738-0908
DESCRIP_ON
SPROCKET & HUB
CHAIN
SPROCKET 11T
PIN-COTTE R
RING-SNAP
RING-SNAP
SPRING-EXTENSION
WASHER-BELL
WASHER-LOCK
WASHER-FLAT
WASHER-FLAT
WASHER-FLAT
WASHER-FLAT
BOLT-IDLER
710-0502A SCREW-HEX SELF-TAP 4
710-0653 SCREW-HEX WASHER 2
710-0788 SCREW-HEX WASHER 1
710-0896 SCREW-HEX 8
710-3008 SCREW-HEX 6
711-1026 SHAFT-H EX 1
711-1028 i SHAFT-JACK 1
712-0241 I NUT-HEX _ 2
712-0711 NUT-HEX JAM 1
712-3004A NUT-HEX FLANGE LOCK 5
34
35
36
37
38
39
40
41
42
741-0563
748-0382
750-0351
750-0978
750-0979
750-0980
750-0981
781-0612
784-5590
BEARING-BALL
SPACER
SLEEVE
SPACER
SPACER
SPACER
SPACER
COVER-FRAME
! BRACKE_SHIFT
t QTY.
1
1
, 1
1
2
1
1
3
2
1
2
4
2
1
2
1
1
1
', 1
E 1
; 1
I
I
®
REF, PART DESCRIPTION t QTY.
NO. NO,
1 634-0100
2
3
4
5
6
7
8
9
10
634-0101
734-1598
711-1017
712-3005
714-0104
731-0981A
734-1793
736-0105
736-0232
738-0213
734-0255
WHEEL ASSY COMPLETE
4"X 10"
RIM ASSY COMPLETE
TIRE PNEUMATIC 4" X 10"
PIN-CLEVIS
NUT-HEX FLANGE
PIN-COTTER
HUB CAP
WHEEL 2" X 8"
WASHER-BELL
WASH ER-WAVE
SCREW-SHOULDER
VALVE STEM
2
2
2
2
2
2
2
2
2
2
2
I 2
24
SEARS CRAFTSMAN 9 H.P. CHIPPER-VACUUM MODEL NO. 247.799640
REF.
NO.
2
3
4
5
6
7
8
9
10
11
12
13
14
Repair Parts
PART
NO.
618-0168
710-1206
711-1035
711-1037
711-1038
713-0445
716-0232
DESCRIPTION
DIFFERENTIAL ASSY
COMPLETE
SCREW-HEX
SHAFT-CROSS
AXLE-SHAFT 10.95" LONG
AXLE-SHAFT 9.82" LONG
SPROCKET 22 T
RING-RETAINING
(2 PER AXLE)
GEAR-DIFFERENTIAL 14T
GEAR-DIFFERENTIAL t0T
HOUSING-DIFFERENTIAL RN
HOUSING-DIFFERENTIAL LH
BEARING-FLANGE
GREASE
{
SEALANT-LOCTITE 5699 i
.©
/
/
717-1358
717-1437
719 -0333
719-0334
748-0383
737-0300
2 J-
2
1
1
2
1oz /
\
REF. PART
NO. NO. DESCRIPTION QTY.
1 710-3008
2 712-3004A
3 726-0205
4 751-0535-8
5 751-0603
6 751-0615
726-0209
SCREW-HEX
NUT-HEX LOCK FLANGE
CLAMP-HOSE
HOSE-FUEL LINE 8"
CAP-FUEL
TANK-FUEL 1 GALLON
CABLE TIE (NOT SHOWN)
2
2
2
1
1
1
1
25
SEARS CRAFTSMAN 9 H.P. ENGINE MODEL NO. 143.959003
Repair Parts
305
400
757:
87
7O
69
119
65
308
t82
184
.,.>
380/_ _' "" "" 277
238
239 /
240 242
276
I
!
]
275
251
72
/
25
26
186
26
101
I
I
"292
_"_ 296
26!
285 €
/
286
f/281282
370e
SEARS CRAFTSMAN 9 H.P. ENGINE MODEL NO. 143.959003
Repair Parts
KEY
NO.
1
2
4
5
15
15A
15B
16
17
18
19
20
25
26
28
30
35
36
37
38
40
40
40
41
41
41
42
42
42
43
45
46
47
48
49
50
60
65
69
70
71
72
75
8O
81
82
83
84
86
87
89
90
92
93
100
101
l DESCRIPTION
t
PART
NO.
35385
27652
32678
30969
30699C
30700
650494
33454
29916
650548
34663
35319
36460
650561
30322
36283
29826
29918
29216
29642
34552
34553
34554
34329A
34330A
34331A
34332
34333
34334
27888
35373A
650908
650882
34034
35374
36569
33273A
650128
35262A
35445A
35377
27642
35319
31845
30590A
35378
30588A
29193
650833
650832
32589
611090
650880
650881
35135
610118
Cylinder (Incl. 2 & 20)
Dowel Pin
Oil Drain Extension
Extension Cap
Governor Rod
(Incl. 15A & 15B)
Governor Yoke
Screw, 6-40 x 5/16"
Govemor Lever
Governor Lever Clamp
Screw, 8-32 x 5116"
Speed Control Spring
Oil Seal
Blower Housing Baffle
Screw, 1/4-20 x 5/8"
Lock Nut, 8-32
Crankshaft
Screw, 10-32 x 3/4"
Lock Washer
Lock Nut, 10-32
Retaining Ring
Piston, Pin & Ring Set (Std.)
Piston, Pin & Ring Set
(.010" OS)
Piston, Pin & Ring Set (.020" OS)
Piston & Pin Ass'y. (Std.) (Incl. 43)
Piston & Pin Ass'y. (.010" OS)
(Incl. 43)
Piston & Pin Ass'y. (.020" OS)
(Incl. 43)
Ring Set (Std.!,
Ring Set (.010 OS)
Ring Set (.020" OS)
Piston Pin Retaining Ring
Connecting Rod Ass'y. (Incl. 46,
47 & 49)
Connecting Rod Bolt
Connecting Rod Bolt
Valve Lifter
Oil Dipper
Camshaft (MCR)
Blower Housing Extension
Screw, 10-24 x 1/2"
Cylinder Cover Gasket
Cylinder Cover (Incl. 71,75 & 80)
Crankshaft Bushing
Oil Drain Plug
Oil Seal
Governor Shaft
Washer
Governor Gear Ass'y. (Incl. 81)
Governor Spool
Retaining Ring
Screw, 1/4-20 x 1-3/16"
Screw, 1/4-20 x 1-11/16"
Flywheel Key
Flywheel
Lock Washer
Flywheel Nut
Solid State Ignition
Spark Plug Cover
KEY
NO.
102
103
110
119
120
125
125
126
126
127
128
129
130
135
139
140
149
149A
150
151
169
170
171
172
173
174
178
182
184
185
186
20O
203
204
206
207
209
2!5
223
224
238
239
240
242
245
245A
250
251
260
261
262
264A
265
275
276
277
281
282
285
PART
NO. DESCRIPTION
650872
650814
35187
36448
36449
27878A
27880A
34035
34036
650691
650690
650738
650694A
33636
33369
650836
27882
35862
27881
32581
27896A
28423
28424
28425
35350
650128
29752
30088A
33263
34707
34661
34677
31342
650549
610973
33878
650821
32410
650378
27915A
28820
27272A
33266
33267
33268
35881
33269A
650513
333750
650788
29747B
650802
33272B
34185B
31588
650729
33013
650760
35985B
Solid State Mounting Stud
Screw, Torx T-15, 10-24 x 1"
Ground Wire
Cylinder Head Gasket
Cylinder Head
Exhaust Valve (Std.) (IncL 151 )
Exhaust Valve (1/32" OS)
(Incl. 151 )
Intake Valve (Std.) (Incl. 151)
Intake Valve (1/32" OS) (Incl. 151
Washer
Belleville Washer
Screw, 1/4-20 x 5/8"
Screw, 5/16-18 x 2"
Resistor Spark Plug (RJ17LM)
Govemor Gear Bracket
Screw, 10-24 x 1/2
Valve Spring Cap
Valve Spring Cap
Valve Spring
Valve Spring Keeper
Valve Cover Gasket
Breather Body
Breather Element
Valve Cover
Breather Tube
Screw, 10-24 x 1/2"
Nut & Lock Washer, 1/4-28
Screw, 1/4-28 x 1"
Carburetor To Intake Pipe Gasket
Intake Pipe
Governor Link
Control Bracket (Incl. 203 & 204)
Compression Spring
Screw, 5-40 x 7/16"
Terminal
Throttle Link
Screw, 10-32 x 1/2"
Control Knob
Screw, Torx T-30, 5/16-18 x 1-1/8"
Intake Pipe Gasket
Screw, 10-32 x 1/2"
Air Cleaner Gasket
Air Cleaner Body
Air Cleaner Bracket
Air Cleaner Filter
Air Cleaner Filter
Air Cleaner Cover
Wing Nut, 1/4-20
Blower Housing
Screw, 5/16-18 x 3/4"
Screw, Torx T-40, 5/16-24 x
21/32"
Screw, 1/4-20 x 5/8"
Cylinder Head Cover
Muffler
Locking Plate
Screw, 5/16-18 x 3-3/16"
Starter Bubble Cover
Screw, 8-32 x 3/8"
Starter Cup
27
SEARS CRAFTSMAN 9 H.P, ENGINE MODEL NO. 143.959003
Repair Parts
KEY PART
NO. NO.
286 35446
287 29752
290 30705
292 26460
296 34279B
305 35554
307 35499
308 35540
310 36205
325 29443
327 35392
342 30063
DESCRIPTION
Starter Screen
Nut & Lock Washer, 1/4-28
Fuel Line
Fuel Line Clamp
Starter Screen
Oil Fill Tube
"O"-Ring
Fill Tube Clip
Dipstick
Wire Clip
Starter Plug
Screw, Terx T-30, 1/4-20 x 1/2"
KEY PART
NO. NO.
370 36261
370A 35703
370B 35532
370C 35274
380 632689
390 590671
400
DESCRIPTION
Instruction Decal
Throttle Decal
Logo Decal
i Instruction Decal
Carburetor (Incl. 184)
Rewind Starter
Note: This engine could have been built
with 590704 starter. Refer to the design of the
air intake louvers for part identification.
Individual starter parts do not interchange.
36454 Gasket Set
RPM Setting:
High Speed: 3450 to 3750
Low Speed: 1700
I OPTIONAL SPARK ARRESTER I
Part No. 34479A
6
7
10
11
12
13
14
15
16
17
Y PART
DESCRIPTION
L NO. ,
632689
632243
632244
631184
631183
632517
650506
632249
632043
631184
631183
632248
630735
632164
650417
630766
632281
630766
630739
630740
631867
631024
632019
631028
631021
631022
632239
630740
630739
630738
27110
630748
631027
632347
Carburetor (Incl. 184 of Engine
Parts List)
Throttle Shaft & Lever Assembly
Throttle Return Spring
Dust Seal Washer
Dust Seal (Throttle)
Throttle Shutter
Shutter Screw
Choke Shaft & Lever Assembly
Choke Return Spring
Dust Seal Washer
Dust Seat (Choke)
Choke Shutter
Choke Positioning Spring
Fuel Fitting
Throttle Crack Screw/Idle Speed
Screw
Tension Spring
Idle Mixture Screw
Tension Spring
Idle Mixture Screw Washer
Idle Mixture Screw =O"-Ring
Float Bowl
Float Shaft
Float
Float Bowl "O"-Ring
Inlet Needte, Seat & Clip
(Incl. 31)
Spring Clip
Main Adj. Screw Ass'y. (Incl. 41
thru 44)
High Speed Mixture Screw
"O'-Ring
High Speed Mixture Screw
Washer
High Speed Mixture Screw
Tension Spring
Bowl Nut Washer
Welch Plug, Idle Mixture Well
Welch Plug, Atmospheric Vent
Repair Kit* (Incl. Items Marked
PK in Notes)
28
**(Incl. Part Nos. 27272A, 27896A, 27915A,
29673, 33263, 33629, 34698A, 35262 & 36448)
SEARS CRAFTSMAN 9 H.P. ENGINE MODEL NO. 143.959003
Repair Parts
PARTS LIST FOR RECOIL STARTER
KEY PART
NO. NO. DESCRIPTION
m
1
2
3
4
5
6
7
8
11
12
13
590671
590599A
590600
590679
590601
590678
590680
590412
590681
590683
590456
590387
Recoil Starter
Spring Pin (Incl. 4)
Washer
Retainer
Washer
Brake Spring
Starter Dog
Dog Spring
Pulley & Rewind Spring Ass'y.
Starter Housing A,s,s'y. ,
Starter Rope (114 x 11/64 Dia.
Starter Handle
_'_4
PARTS LIST FOR RECOIL STARTER (OPTIONAL)
KEY PART
NO. NO. DESCRIPTION
m
1
2
3
4
5
6
7
8
11
12
13
590704
590599A
590600
590696
590601
590697
590698
590699
590700
590705
590535
590701
Recoil Starter
Spring Pin (Incl. 4)
Washer
Retainer
Washer
Brake Spring
Starter Dog
Deg Spring
Pulley & Rewind Spring Ass'y.
Starter Housing Ass'y.
Starter Rope (98" x 9/64" Dia.)
Starter Handle
O--2
--11
29
Seal kits for the new cylinders are the same as for the old cy ind.ers_as a!l me internal components are the same,
bore diam old cylinder new c_inder sealkit
4,0" 718-0307 718-0773 753-0490
4.5" 718-0306 718-0769 753-0563
To; ¸
DISTRIBUTORS & AUTHORIZED SERVICE DEALERS
Re: LOG SPLITTER SEAL KITS
As of February 1. 1999. log splitter cylinders under warranty capable of being repmred with a seal
kit must be repaired. Any cylinders replaced under warranty will be called back for inspection. Any
cylinder found to be repairable will be returned to the dealer and the dealer will be charged back the
amount paid on the claim for the cylinder. Labor already paid will not be charged back. If replacement is
determined to have been the only solution to the problem, no action will be taken. If you have any
questions regarding this policy or how to handle a situation please contact MTD service.
If you need a pressure test kit (part # 759-3742), contact your central distributor. This kit includes
an ins,_"uc=ional video and is a,:ailable for loan or purchase. You will be rei_b'arsed for t_hc cost of
shipping and handling on a warranty job if you used a test kit on loan and include the amount on the claim
form.
Seal kits are as follows.
Fisher cylinders (retaining ring end cap):
Md_J CYLINDER NUMBER CYLINDER I.D. SEAL KIT
_z._,...>718-0306
_zb-e 718-0307
718-0312
718-0313
4.5"
4.0"
4.25"
5.0"
753-0563
753-0490
753-0637
75320564
Best Metal cylinders (thread on end cap):
CYL NDER NOMBER [ CYLINDER I.D. SEAL KIT
718-0307 [ 4.0" 753-0689
718-03'13 ! 5.0 _'' 753-0691
Procedure for Resealing Hydraulic Cylinders
(On Machine - Fisher Cylinders - Snap-Ring Type)
1. Clean cylinder, wedge and beam area.
2. Fully retract cylinder rod into cylinder - stop engine.
3. With engine off, move control valve back and forth several times to be sure there is no pressure in system.
4. With a clean catch container in place, disconnect pump to control valve hose from pump fitting and in_ert end
into container. Plug fitting on pump with plastic cap or tape. This is to prevent dirt from entering fitting,
5. Remove (4) ¥I" bolts securing the log dislodger and remove dislodger.
6, Remove %" bolt through wedge and cylinder rod. Slide wedge all the way forward on the beam till it meets the
base plate. No need to remove wedge from beam,
Z. Lift rod up and place wood block under cylinder barrel to hold assembly at an angle, This will allow for rod
removal
8. Place control valve into detent position
9, Using a wood dowel or a hammer handle, tap cylinder rod cap into cylinder just beyond the snap ring. Do not go
any farther than necessary as it will make further disassembly very dit_cult. Remove snap ring from groove
being careful not to scratch groove or bore. If you do, you must polish scratched area with fine emery so scratch
won't damage new seals as they pass the area It is an easy job if you tap one end of snap ring into the cylinder
first, and then get a medium screwdriver under the ring to pry it our.
10. Reconnect and tighten hose to pump.
11.Very lmportantH!! You must clean any paint or rust in the bore area by sanding it off. The paint wi}l be from
the snap ring groove outward. After removing ALL uaint and rust leaving a smooth surface, coa_ exposed area
inside cylinder with grease If you do not do this, fiJrther disassembly will be difficult and damage may result
during reassemhIy!
USE EXTREME CAUTION DURING NEXT STEP).). ).
12. Put control lever in neutral and start engine. Set engine at low idle speed, and use control valve lever 1o extend
rod out of cylinder until cylinder rod cap just starts to move. Put control lever in neutral, shut off engine and
disconnect spark plug wire.
13. Have someone hold control lever in extend position and pull engine starter rope to extend rod slowly until the
cy [nder rod cap can be pulled free of the cylinder. Do not remove end cap from rod.
14. Remove steel tube from fitting at end of cyl_nder and attach a ¾'" I.D. hose to fitting on the e_linder using a hose
damp. Place other end of hose into catch container.
15. Push rod into cylinder using cylinder rod cap as a guide. This will force oil out of cylinder through hose and into
container. Do nol push turn down of rod into cylinder rod cap as damage to cap may result. Remove hose from
cylinder.
16. You are now ready to pull rod and piston assembly from cylinder barrel_ Be sure to have a piece of wood, thick
cardboard or pile of rags on the beam so that when you pull the rod out of the cylinder the piston won't be
damaged by droptfing down on the beam Install a suitable bar or large screwdriver through bolt hole in rod and
pull rod, cylinder rod cap and piston out of cylinder.
17". Set rod and piston assembly on clean bench and with a light examine inside of cylinder barrel for gouges and
scratches. If scratches exist you should replace the complete cylinder. Do not attempt to hone cylinder as any
reduction of wall thickness can result in a safety problem, If no damage to cylinder is apparent, proceed with
repair.
18. Prop cylinder up as close to vertical as possible with a wood block.
19. Bolt rod to wedge ram placing a wood block under rod to keep piston from hitting beam. Remove nut from
piston end of rod and slide piston and cylinder rod cap off threaded end of rod.
20. Examine piston and rod cap for damage. Remove old seals, bearings and o-rings from rod, pisto_ and cylinder
rod cap. Pay attention to alignment of seals as some are directional. Be very careful not to scratch the walls
of the seal grooves. Scratches can render the rod cap or piston unusable.
21. Using a tap and die or thread file, clean threads on rod and nut.
22. Cleanliness is vital throughout reassembly! Clean piston, rod, end cap and cylinder.
23. Lubricate seals and bearings with hydraulic oil and install them in end cap and piston.
24. Lubricate inside of cylinder rod cap and piston with general purpose grease and carefully install them on rod from
threaded end being careful to start wiper lip onto rod and then working cylinder rod cap on. Any attempt to
install the cap from the rod turn down end will result in seal lip damage.
25. Clean grease from exposed threads on rod and install piston nut on rod using red Loctite. Torque nut to
300 - 325 ft.-lbs, and restake in place to prevent the nut from backing off.
26. Remove rod assembly from wedge and set aside in a clean place being careful not to damage seals. Lower
cylinder to angle at which rod may be reinserted.
27..Lubricate inside of cylinder _t__'thhydrau!{c oil and grease the end cap and piston.
28. Insert piston into cylinder being careful to not damage seals. Slide assembly in until piston is approximately 12"
into barrel, then slide rod cap into cylinder and tap it injust past snap ring groove. Do not go farther than
necessary to install snap ring as damage to seals may occur, install snap ring.
29. Place control valve in neutral. Reattach tube to cylinder and wedge to rod.
30. Add oil to tank to within 1" from top. Start engine and slowly cycle control valve several times to fill cylinder.
There will be a !oud "POP" as cylinder rod cap seats over snap ring. (Cylinder may act jumpy until cylinder self
purges of air.) When cylinder is full, retract ram fully and stop engine. Top offoil to within 1.5" to 2" from top
of tank.
3 I. Remove wedge from rod and prop cylinder up again. Clean and paint area of cylinder bore you originally sanded.
32. Complete reassembly, cycle unit and check for leaks. If possible, test on a few logs.
