Troybilt 21A-634K711 Owner’s Manual
®
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Operator's Manual
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Rear-tine Tiller Models
630C--Tuffy ¢
634AmSuper Bronco TM
634KmProLine
Mode1634A Shown
IMPORTANT: Read safety rules and instructions carefully before operating equipment.
Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-covered, brush-
covered or grass-covered land unless the engine's exhaust system is equipped with a spark attester meeting applicable local or state laws (if
any). If a spark arrester is used, it should be maintained in effective working order by the operator. In the State of California the above is required
by law (Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands. A spark
arrester for the muffler is available through your nearest engine authorized service dealer or contact the service department, P.O. Box 361131
Cleveland, Ohio 44136-0019.
Troy-Bilt LLC,P.O.BOX361131CLEVELAND,OHIO44136-0019
PRINTEDINU.S.A. FORMNO. 770-10594F
10/6/04
TABLEOFCONTENTS
Content Page Content Page
Customer Support 2 Maintenance 17
Safety 3 Off-season Storage 21
Assembly 6 Troubleshooting 22
Features and Controls 10 Parts List 23
Operation 12 Warranty Back Cover
FINDINGMODELNUMBER
This Operator's Manual is an important part of your new lawn tractor. It will help you assemble, prepare and maintain the
unit for best performance. Please read and understand what it says.
Before you start assembling your new equipment, please locate the model plate on the equipment and
copy the information from it in the space provided below. A sample model plate is also given below. You can
locate the model plate by looking at the rear of the tine shield. This information will be necessary to use the
manufacturer's web site and/or help from the Customer Support Department or an authorized service dealer.
Copy the model number here:
OTRDV-BILT T,OV-BmLTLLC
www.troybilt.com CLEVELAND,OH44136
,. 1-800-520-552_
P. O. BOX 361131
330-558-7220
Copy the serial number here:
CUSTOMERSUPPORT
PleasedoNOTreh/m thel/nit totheretailer withoutfirstcontactingCustomerSupport.
If you have difficulty assembling this product or have any questions regarding the controls, operation or maintenance of
this unit, you can seek help from the experts. Choose from the options below:
Visit troy-bilt.com for many useful suggestions. Click on Customer Support button and you
will get the four options reproduced here. Click on the appropriate button and help is
immediately available.
_ 7>,,,,
/;/ ,> ;'V }/ )
..... f ; @; t ;D
j;_ ?" #'s " 4t, ' F_ i/!s ,
* ;,, #FOX }_ j,"
,,, >,, rL;," ¢j ,_ <# ft, *x J ,7;; _
'_,-., _tf';_'ivc ,l
,v yO, ,_;7f'_;:'
If you prefer to reach a Customer Support Representative, please call 1(800) 520-5520.
The engine manufacturer is responsible for all engine-related issues with regard to
performance, power-rating, specifications, warranty and service. Please refer to the engine
manufacturer's Owner's/Operator's Manual, packed separately with your unit, for more
information.
SECTION1: SAFETY
This machine meets voluntary safety stan-
dard B71.8-1996, which is sponsoredbythe
Outdoor Power Equipment Institute, Inc.,
and is published by the American National
Standards Institute.
WARNING
The engine exhaust from this productcontains
chemicals known to the State of California to
cause cancer, birth defects or other reproduc-
SafetyAlertSymbol
ForwardClutchBail
ReverseClutchControl
(Models634A)
DepthRegulator
TineHoodFlap
,_ This is a safety alert symbol. It is used
and anyother literatureyou may receive.
Bethoroughly familiar withthe controls
andthe proper useof the tiller and its en-
gine. Know howto stopthe unit anddisen-
gagethe controls quickly.
2. Neverallow childrento operatethetiller.
Neverallow adults to operatethe tiller
without proper instruction.
3. Keepthe areaof operation clear of all
persons, particularly children and pets.
4. Keepin mindthattheoperatoror useris
responsible for accidents or hazardsoc-
curring to otherpeople,their property,and
themselves.
in this manual and on the unit to alert
you to potential hazards. When you see
this symbol, read and obey the
message that follows it. Failure to obey
safety messages could result in
personal injury or property damage.
3. Donot operatethetiller without wearing
1. Carefully readthis Own-
Training
er's Manual,the separate
Engine Owner'sManual,
adequateouter garments. Avoid loose gar-
ments or jewelry that could get caught in
moving parts.
4. Donot operatethe tiller when barefoot
or wearingsandals, sneakers,or light foot-
wear.Wear protective footwear thatwill
improve footing onslippery surfaces.
5. Donottill nearunderground electricca-
bles,telephone lines, pipes or hoses.If in
doubt, contactyour telephoneor utility
company.
6. Warning: Handlefuel with care; it is
highly flammable and its vapors areexplo-
sive.Takethe following precautions:
a. Store fuel in containers specifically
b. Thegascapshall neverberemovedor
Preparation
1. Thoroughly inspect the areawherethe
tiller is to be usedand removeall foreign
objects.
2. Be sure all tiller controls are released
and bothwheels arein the WheelDrive po-
sition beforestarting the engine.
c. Keepmatches, cigarettes, cigars,
d. Fill fuel tank outdoors with extreme
Standard-Rotating-Tines
(SRT)
DrivePin
Figure 1-1: Tiller featuresand contre/s. See separateEngine Owner'sManua/ to
identifyengine contre/s.
e. Replaceall fueltank andcontainer
caps securely.
f. If fuel is spilled, do not attempt to
start the engine,but movethe ma-
chineawayfrom the areaof spillage
and avoidcreating any sourceof ig-
nition until fuel vapors havedissi-
pated.
7. Nevermakeadjustments whenengineis
running (unless recommendedby manu-
facturer).
Operation
1. Do not put hands or feet near or under
rotating parts.
designedfor this purpose.
fueladdedwhiletheengineisrunning.
Allowthe engineto coolforseveral
minutesbeforeaddingfuel.
pipes, openflamesand sparks away
from thefueltankandfuelcontainer.
care.Neverfill fuel tank indoors.Use
a funnelor spout to preventspillage.
2. Exerciseextremecaution when onor
crossing gravel drives,walks, or roads.
Stayalert for hiddenhazardsortraffic. Do
not carry passengers.
3. After striking a foreign object, stop the
engine,removethe wire from the spark
plug wire and prevent it from touchingthe
spark plug. Thoroughly inspectthe ma-
chine for any damageand repairthe dam-
agebefore restarting andoperatingthe
machine.
4.Exercisecautiontoavoidslippingorfall-
ing.
5.Iftheunitshouldstarttovibrateabnor-
mally,stoptheengine,disconnectthe
sparkplugwireandpreventitfromtouch-
ingthesparkplug,andcheckimmediately
forthecause.Vibrationisgenerallya
warningoftrouble.
6. Stop the engine, disconnectthe spark
plug wire and prevent it from touching the
spark plug,wheneveryou leavethe operat-
ing position, beforeunclogging thetines,
or whenmaking any repairs,adjustments
or inspections.
7. Takeall possible precautions whenleav-
ing the machine unattended.Stopthe en-
gine. Disconnect thespark plug wire and
move it awayfrom thespark plug. Besure
that both wheelsarein theWheelDrive po-
sition.
8. Beforecleaning,repairing,or inspect-
ing, stop the engineand make certain all
moving partshavestopped. Disconnect
the spark plug wire and preventit from
touching thespark plug to preventacci-
dentalstarting.
9. The flapon the fine hood must bedown
when operating thetiller.
10. Neverusethetiller unless proper
guards, plates,or other safetyprotective
devicesare in place.
11. Donot run the enginein an enclosed
area.Engineexhaust containscarbon
monoxide gas, a deadlypoison that is
odorless, colorless, and tasteless.
12. Keepchildren and pets away.
13. Never operate thetiller underengine
powerif thewheels are in theFreewheel
position.In the Freewheelposition, the
wheelswill not holdthe tiller back andthe
revolvingtines could propel the tiller rapid-
ly,possibly causingloss of control. Always
engagethe wheels with the wheel drive
pins in theWheel Drive position before
starting the engineorengaging the
tines4Nheelswith the ForwardClutch Bail
(all models)orthe ReverseClutchcontrol
(Models 634Aonly).
14. Be awarethat the tiller may unex-
pectedlybounceupwardorjumpforward
if the tines shouldstrikeextremelyhard
packedsoil, frozenground,or buried ob-
stacleslike large stones,roots,or
stumps.
If indoubtaboutthetilling conditions, al-
ways usethe following operating precau-
tionsto assistyouin maintainingcontrol
of the tiller:
a. Walk behindandto one side of the
tiller, usingone handonthehandle
barsRelax yourarm, but use a
securehandgrip.
b. Useshallower depthregulator
settings,working graduallydeeper
with eachpass.
¢. Use slowerenginespeeds.
d. Clearthe tilling area of all large
stones,rootsorother debris.
e. Avoidusingdownwardpressureon
thehandlebars. If needbe, use
slight upwardpressuretokeep the
tinesfrom diggingtoodeeply.
f. Beforecontacting hardpackedsoil
at the endof a row,reduce engine
speedand lift thehandlebarsto
raise thetines out of the soil.
g. In anemergency,stopthetinesand
wheels byreleasing whichever
clutch controlis engaged.Donot
attemptto restrainthetiller.
15. Donot overloadthe tiller's capacityby
attempting to till too deeplyat too fast a
rate.
16. Neveroperatethetiller at hightrans-
port speeds on hard or slippery surfaces.
Look behind and use carewhen backing
up.
17. Donot operatethetiller on aslope that
is too steepfor safety. When on slopes,
slow down and makesure you havegood
footing. Neverpermit thetillerto freewheel
down slopes.
18. Neverallow bystandersnearthe unit.
19. Onlyuseattachmentsand accessories
that areapproved bythe manufacturer of
the tiller.
20. Usetiller attachmentsand accessories
when recommended.
21. Neveroperatethetiller without good
visibility or light.
22. Neveroperatethe tiller if you aretired;
or underthe influence ofalcohol, drugs or
medication.
23. Operatorsshall nottamper with theen-
gine-governor settings onthe machine;
the governor controls the maximum safe
operatingspeedto protectthe engine and
all movingparts from damagecaused by
overspeed.Authorized service shall be
sought if a problem exists.
24. Do nottouch enginepartswhich may
behot from operation.Letpartscool down
sufficiently.
25. Pleaseremember:Youcan alwaysstop
thetines and wheels by releasingthe For-
ward Clutch Bail or on Model634Athe Re-
verseClutchcontrol, (whichevercontrol is
engaged),or by moving the ignition switch
and/orthrottle control leveron the engine
to "OFF" or "STOP".
26. Toloador unloadthe tiller, seethe in-
structions in Section4 of this Manual.
27. Useextremecautionwhen reversing
or pullingthe machinetowards you.
28. Startthe enginecarefully accordingto
instructions and with feet well awayfrom
thetines.
29. Neverpick up or carry a machinewhile
the engineis running.
MaintenanceandStorage
1. Keepthe tiller, attachmentsand acces-
sories in safeworking condition.
2. Checkall nuts, bolts, and screwsfor
proper tightness to besurethe equipment
is in safeworking condition.
3. Neverstore thetiller with fuel inthe fuel
tank insidea building where ignition sourc-
esare presentsuchashot waterandspace
heaters,furnaces, clothes dryers, stoves,
electric motors, etc.). Allow the engineto
cool before storing the unit in any enclo-
sure.
4. Toreducethe chancesof a fire hazard,
keepthe enginefreeofgrass, leaves,or ex-
cessivegrease.
5. Storegasolinein acool, well-ventilated
area,safely awayfrom anyspark- or
flame-producing equipment. Store gaso-
line in anapprovedcontainer,safelyaway
from the reachof children.
6. Referto the Maintenancesections of
this Manualand the separateEngineOwn-
er'sManualfor instructions ifthe unit is to
bestored for an extendedperiod.
7. Neverperform maintenancewhilethe
engineis running orthe spark plug wire is
connected,exceptwhen specifically in-
structed to do so.
8. Ifthe fueltank hasto bedrained,dothis
outdoors.
Decals
Foryour safetyandthe safety of others, vari-
ous safety and operational decalsare located
on your unit (seeFigure 1-2).
Keepthe decalscleanand legibleatall times.
Contactyour local servicedealeror thefactory
for replacementsif anydecalsaredamagedor
missing.
Referto the PartsListpagesin this Manualfor
decallocations, descriptions and part num-
bers.
ForwardClutchBail
StartingStabilization
Message(on engine)
Figure 1-2: Locationofsafety and operatingdeca/s.
ReverseClutch Control
OperatingInstruction
(Models 634A)
WarningMessages
HotSurfacesWarning
OperatingSymbols
Varioussymbols(shownhere,withworddescriptions)
mayheusedonte'dllerandengine.
NOTE:Yourunitmaynothaveallof_esymbds.
FAST SLOW STOP
* READTHEOWNER'SMANUAL.
* KNOWLOCATIONSAND FUNCTIONSOFALLCONTROLS.
* KEEPALLSAFETYDEVICESANDSHIELDSIN PLACEAND WORKING.
° NEVERALLOWCHILDRENORUNINSTRUCTEDADULTSTOOPERATETILLER.
° SHUTOFFENGINEAND DISCONNECTSPARKPLUGWIREBEFOREMANUALLYUN-
CLOGGINGTINESORMAKINGREPAIRS.
° KEEPBYSTANDERSAWAYFROM MACHINE.
° KEEPAWAYFROM ROTATINGPARTS.
° USEEXTREMECAUTIONWHENREVERSINGOR PULLINGTHEMACHINETOWARDS
YOU.
I"1 I*1 R
CHOKE CHOKE REVERSE
ON OFF ROTATINGTINES
<,-K,
TILLERDIRECTION
TO AVOID SERIOUS INJURY:
<--o-->
LEVERDIRECTION
BAIL
ENGAGED
BAIL
DISENGAGED
SECTION2: ASSEMBLY
WARNING: Toprevent
personalinjury or property
damage,do notstartthe engine
until all assemblysteps are
completeandyou haveread
and understandthesafety and
operatinginstructions in this
manual.
INTRODUCTION
Carefullyfollow these assemblysteps to
correctly prepareyour tiller for use. It is
recommendedthatyou readthis Sectionin
its entirety beforebeginning assembly.
NOTE: Various rifler models are
presented in this Manual. Use only the
information appropriate for your tiller
model. Enginestyles varyby model, Your
engine may appear differently than those
illustrated in this manual.
INSPECTUNIT
Inspect the unit and carton for damageim-
mediatelyafter delivery.Contactthe carrier
(trucking company) if you find orsuspect
damage. Inform them of the damageand
request instructions for filing a claim. To
protect your rights, put your claim in writ-
ing and maila copyto the carrierwithin 15
days after the unit has beendelivered.
ContactTroy-Bilt LLCif you needassis-
tance inthis matter.
TOOLS/ MATERIALSNEEDED
(2) 1/2" open-end wrench*
(2) 9/16" open-endwrench*
(1) 3/8" open-endwrench*
(1) Largeadjustable wrench
(Models 634F/634A only)
(1) Scissors (totrim plasticties)
(1) Ruler (for belttension check)
(1) Block of wood (to support tiller when
removing wheels)
(1) Tirepressure gauge (for models with
pneumatictires)
(1) Cleanoil funnel
(1) Motor oil. Refertothe EngineOwner's
Manualfor oilspecificationsand
quantityrequired.
* Adjustable wrenches may be used.
ASSEMBLYSTEPS
STEP 1: UNPACKING INSTRUCTIONS
NOTE:While unpacking,do not severely
bend anycontrol cables.
1.The tiller weighs approximately 133 Ibs.
Do not attempt to remove it from the ship-
ping platform until instructed to do so in
these Assembly steps.
2. Removeany packagingmaterial from
the carton. Removeany staples from the
bottom of the carton and removethe car-
ton from the shipping platform.
3. Removeall unassembledparts andthe
separatehardwarebag from the carton.
Checkthat you havethe items listed in the
LooseParts List (contactyour local dealer
or the factory items are missing or dam-
aged).
NOTE: Use the screw length template
(Fig,2-1) to identify screws,
LoosePartsList
Qty. Description
1 HandlebarSupport (seeA, Fig. 2-2)
1 HandlebarAssembly(seeK,Fig.2-2)
Hardwarebag contents:
4 Hexhd. screw, 5/16-18 x 1-1/2"
2 Hexhd. screw, 3/8-16 x 3/4"
2 FlatWasher,3/8"
4 Split lockwasher,5/16"
4 Hexnut, 5/16"-18
2 HexIocknut, 34}"-16
*Model 634Aonly
IMPORTANT:Motor oil must beaddedto
the enginecrankcasebeforetheengine is
started. Followthe instructions inthis
Sectionand in the separateEngine
Owner's Manual.
NOTE: LEFTandRIGHTsidesof thetiller
are as viewedfrom the operator's position
behind thehandlebars.
STEP 2: ATTACHHANDLEBAR
1. Looselyattachthe legsof thehandlebar
support (A, Fig. 2-2) to the inner sides of
the tiller frameusingtwo 3/8"-16x 3/4" hex
hd. screws (B), 3/8" flat washers(C), and
3/8"-16 hex Iocknuts (D).
_iiii
Figure2-1: Toidentifylengthofscrews,place
screwontemplateasshownandmeasuredis-
tancebetweenbottomofscrewheadandtipof
screw.
2. Usingtwo 5/16"-18 x 1-1/2"screws (G),
5/16" split lock washers (H) and 5/16"-18
hexnuts (I), loosely attachthe handlebar
support (A)usingthe upperholes.Tighten
thetwo screws securely.
3. Therearethree height adjustment holes
in the two handlebar support brackets (E
and F,Fig. 2-2). Usea setting thatwill po-
sition the handlebarsat approximately
waist levelwhenthe tines are3"-4"into the
soil. Looselyattachthe support bracketsto
theoutsideofthe handlebarassembly (K)
usingtwo 5/16"-18x 1-1/2" screws (G),5/
16"split lockwashers (H)and5/16"-18 hex
nuts (I).NOTE:Ifa support bracketwill not
move, loosen attaching screw (J) and nut.
IMPORTANT:The support bracketsmust
beassembledto theoutsideof the
handlebarassembly.
4. Tightenall handlebarmounting hard-
waresecurely.
STEP 3: MOVE TILLER OFF CRATE
Toroll the tiller off the shipping platform,
put the wheelsinfreewheel,asfollows:
1. Placeasturdy block underthetransmis-
sion to raiseone wheel about 1"off the
ground.
2, Removethe hairpin cotter (L, Fig.2-3)
and wheeldrive pin (M) from the wheel
hub (0) and wheelshaft (N).
3. Slidethe wheelfully inwardonthe wheel
shaft (N, Fig.2-3). Reinstall the wheel
°-! °
Fig. 2-3: Wheel in FREEWHEELposition
Fig. 2.2: Attachhandlebar.
drive pin (M) through thewheel shaft only
(not through the wheel hub). Securethe
wheeldrive pinwith the hairpin cotter (L),
pushingthe hairpincotter in asfarasit will
go. The wheelshould now spin freely
(freewheel) on the wheel shaft. Repeat
with the other wheel.
4. Usethe handlebarto roll the tiller to a
flat area.
A
J
B
STEP 4: INSTALL FORWARD
CLUTCH CABLE
1. Carefullyunwrapthe forward clutch ca-
ble(cablewithout an attachedknob) from
its shipping position and slide thethin ca-
blewire (T,Fig. 2-4) into the slot in the ca-
blebracket. Pushthe cableconnector (U,
Fig.2-4) upthrough the holein the bracket
untilthe groove in the connector snaps
into place.
2. Threadthe#10-24 hexnut (Z, Fig. 2-5)
halfway onto the screw (V) which runs
through the spring (W, Fig.2-5).
3. Threadthe screw (V) into the cable ad-
juster (X).
IMPORTANT: Beforestartingthe engine,
the wheels must beplacedin theWHEEL
DRIVEposition (pinsthrough wheelhubs
andwheelshaft). This procedureis
describedin WheelDrivePinsin Section3.
Fig. 2-4: Installingforward clutchcable bracketand cable.
4. Checkfor correct tension ontheforward
drive belt bytaking two measurementsof
the cable spring, as follows:
a.With the ForwardClutch Bail(Y,Fig. 2-
6) in an open (released)position, measure
the length ofthecablespring (W) from the
outermost coil to the outermost coil.
b. Squeezethe ForwardClutch Bailagainst
the handlebar(seeFig.2-7) andre-mea-
surethe spring length. Thebelt tension is
correct if this second measurementis be-
tween 1/16"to 3/16" longerthanthe first
measurement.If so, turn the hexnut (Z,
Fig. 2-7) tightly against the cableadjuster
(X) while preventingthe cableadjuster
from turning.
c. Ifthe spring lengthis incorrect, you
must adjustthe cabletension asdescribed
in Checkingand Adjusting Forward Drive
Belt Tensionin Section5. Incorrect cable
tension can result in beltslippage (cable
tension too loose), or unintentional tine
movement whenthe clutch bail is in Neu-
tral (cabletension too tight).
Wm
W
iiiiiiiiiiiiiiii
Fig. 2-7: Tocheckforwardbelt tension, take twomeasurementsofthelengthofthe coils inthe
spring-- first withthebail open, then withthe bail held against thehandlebar.
STEP 5: INSTALL REVERSECLUTCH
CABLE (MODEL 634A ONLY)
1. Unwrapthe reverseclutch cable (CC,
Fig.2-8 andFig.2-9) from its shipping po-
sition androute it up to the handlebar.Be
surethat the cableis routedbeneaththe
Forward Clutch Bail.
2. Insertthecable(CC,Fig.2-8)through the
slot inthecablebracketandpositiontheflat
sideof thethreadedassemblynextto the
flat side of the hole.Slidethe hex nut (DD)
up thecable andtighten it securely.
Flat Side
3. Fastenthe reverseclutch cable to the
left sidehandlebarwith acabletie (EE,Fig.
2-9).
4. Testthefunction ofthe reverseclutch by
Fig. 2-8:/nsta//reverse cablebracketand
reverseclutchcable.
pulling out and releasingthe cableknob.
Theknob should return to itsneutral posi-
tion (resting against bracket). Ifit doesn't,
contact your local dealeror Troy-Bilt LLC
for technical assistance.
Fig.2-5: Cable
springand
adjuster.
Fig. 2-6: Attach forward
clutchcable spring to
forwardclutch bail.
Fig. 2-9: Route reverseclutchcable(CC)as
shown.Attachwithcable tie(EE).
5! 6: CHECKTRAHSMiSSiOH
OILLEVEL
Thetransmission wasfilledwith gearoil at
thefactory. However,you shouldcheckthe
gear oil levelat this timeto makecertain it
is correct.
IMPORTANT:Donot operatethetiller if the
gear oil level is low. Doingso will result in
severedamageto the transmission com-
ponents.
1. With the tiller on levelground, pull the
Depth RegulatorLever(FF,Fig. 2-10) back
andthen all theway up until the lowest
notch inthe lever isengaged.
2. Removethe oil fill plug (GG,Fig.2-11)
from the transmission housing cover and
locatethe maindrive shaft situated inside
the housing.
3. Thegear oil levelis correct if thegear oil
isapproximately halfway upthe sideofthe
main drive shaft.
4. Ifthe oil levelislow, add gear oil by re-
ferring to A. ToCheckthe Transmission
dear 0il Levelin Section5.
I El-'/: AUU IVlUI UH UIL
Thetiller isshipped withoutoil in the en-
gine.
IMPORTANT:Donot start the enginewith-
out first adding motor oil. Severeengine
damagewill result ifthe engineis run with-
out oil.
1. Referto the separateEngineOwner's
Manualfor engine oil specifications and
capacities.
2. With the tiller on levelground, movethe
Depth RegulatorLever(FF,Fig.2-1O)upor
down until the engine is level.
3. Add motor oil as describedin the En-
gine Owner's Manual.
4. Movethe DepthRegulator Lever all the
way down untilthe highest notch is en-
gaged.This placesthe tines in the"travel"
position, which allows the tiller to be
moved without thetines touching the
ground.
_1 El-'8: I.;HEI.;K HAHUWAHE
Checkall nuts and screws for tightness.
STEP g: CHECKAIR PRESSURE IN
TIRES (unitswithpneumatictires)
Checkthe air pressurewith a tire gauge.
Deflateor inflatethe tires equally to be-
tween 15 PSIand 20 PSI (pounds per
squareinch). Besurethat bothtires arein-
flated equallyor the unit will pull to one
side.
Fig. 2-10: AdjustDepth RegulatorLever.
Fig. 2-11: Removegear oil fill plug.
IMPORTANT: This completesthe assemblysteps. Be-
fore operatingyour tiller, makesure you readthe follow-
ing sectionsinthis Manual,as well asthe
separateEngineOwner'sManual:
• Section1: Safety
• Section3: Featuresand Controls
• Section4: Operation
SECTION3: FEATURESANDCONTROLS
_ ARNING: Before
operatingyour machine,
carefully readand understand
all safety,controls and
operatinginstructions in this
Manual,the separateEngine
Owner's Manual,and on the
decalson the machine.
Failureto follow these
instructions can resultin
serious personalinjury.
INTRODUCTION
This Section describesthe locationand
function of thecontrols onyourtiller. Refer
to the following Section, Operationfor de-
tailed operatinginstructions.
Practice using these controls, with the en-
gine shut off, until you understandthe op-
eration of the controls and feelconfident
with eachof them.
ENGINE CONTROLS
Referto the enginemanufacturer'sEngine
Owner'sManual(included in the tiller liter-
aturepackage)to identify the controls on
your engine.
IMPORTANT:Thecontrol for stopping the
engine is located onthe engine.
WHEEL DRIVE PINS
Eachwheel is equippedwith a wheeldrive
pin (A, Figures3-2 and 3-3) that secures
the wheel to the wheelshaft (B). The
wheelscan be positioned in either a
WHEELDRIVEor a FREEWHEELmode.
_ WARNING: Neverallow
either of thewheelsto bein the
FREEWHEELposition whenthe
engineis running. Alwaysput
both wheelsin the WHEEL
DRIVEposition before starting
the engine.
Failureto comply could cause
loss of tiller control, property
damage,or personalinjury.
Beforestarting the engine,put both wheels
in the WHEELDRIVEposition byinserting
the wheel drive pins through the wheel
hubsandthewheelshaft. Doingso "locks"
the wheels to the wheel shaft, causing the
wheelsto turn when either the
ForwardClutch
Figure3-1: Tiller features and controls.See separateEngineOwner's Manual toidentify
enginecontrols.
Bail ReverseClutchControl
(Model 634A)
gulator
HandlebarHeight Adjustment
Wheel Drive Pin
(oneachwheel)
Forward ClutchBail (all models) or the Re-
verse ClutchControl (Model 634A)is en-
gaged.
Usethe FREEWHEELmode only whenthe
engineis not running, in FREEWHEEL,the
wheeldrive pins are placedonly through
the holes inthewheelshaft (notthe wheel
hubs), thus allowing the wheelsto turn
freely whenyou manually movethe tiller.
Toplacethewheels in WHEELDRIVEor
FREEWHEEL:
1. Stopengine,disconnectsparkplug wire
Figure3-2: WHEELDRIVEposition.
from sparkplug andallowengineto cool.
wheelhub (D, Figure3-2) andwheel
_ WARNING: Donotplace
tiller on its sidewhen changing
wheeldrive positions. Doingso
could result in gasoline leaking
from the fuel tank.
Failureto follow this instruction
could result in personalinjury
or propertydamage.
2. Raiseone wheelabout one inch off the
ground andplaceasturdy support under
the transmission.
shaft (B). Insertwheel drive pin (A)
through wheel hub (D)and wheel
shaft (B). Securewheeldrive pin with hair-
pin cotter (C) by pushing hairpincotter in
asfar as it will go. Repeatwith the other
wheeland then removethe support from
beneaththe transmission.
5. FORFREEWHEELMODE(Figure 3-3):
Slidethewheelinwardandinsertthewheel
drive pin (A, Figure3-3) onlythrough the
hole in the wheel shaft (B). Securewheel
3. Removehairpin cotter (C,Figures3-2
and 3-3) from wheel drive pin (A).
4. FORWHEELDRIVEMODE(Figure3-2):
Slide wheeloutward and align holes in
lO
drivepin with hairpincotter (C) bypushing
hairpin cotter in asfar as it will go. Repeat
for the other wheeland then removethe
support from beneaththetransmission.
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