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O TRO_ BILT
Operator's Manual
Rear-tine Tiller Models
630C Tuffy_
634Fm BroncoTM
634Bm Super BroncoTM
Model 634B Shown
IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY
WARNING: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-
covered, brush-covered or grass-covered land unless the engine's exhaust system is equipped with a spark arrester meeting applicable
local or state laws (if any). If a spark arrester is used, it should
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TABLEOFCONTENTS Content Page Calling CustomerSupport .......................................................................................................2 Safety......................................................................................................................................3 Assembly................................................................................................................................6 Freaturesand Controls ........................................
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SECTION 1: SAFETY Thismachinemeetsvoluntarysafetystan- dardB71.8-1996, whichis sponsored bythe OutdoorPowerEquipmentInstitute,Inc., andis publishedbythe AmericanNational StandardsInstitute. ForwardClutchB_ Reverse ClutchControl (Models 634F/634B) WARNING Depth Regulator The engine exhaust from this productcontains chemicals known to the State of California to Tine HoodFlap cause cancer, birth defects or other reproduc- / SafetyAlertSymbol in this manual and on the unit to alert This is a safety
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4. Exercisecautionto avoid slipping or fall- If indoubtaboutthe tilling conditions,al- 24. Do not touch engine parts which may ing. waysusethe followingoperatingprecau- behot from operation. Let parts cool down tionsto assistyou inmaintainingcontrol sufficiently. 5. If the unit should start to vibrate aonor- of the tiller: 25. Pleaseremember:Youcanalways stop really,stop the engine, disconnect the a. Walk behindandto oneside of the the tines andwheels by releasingthe For- spark plug wire and pre
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Decals Reverse ClutchControl ForwardClutchBail For your safety and the safety of others, vari- Operating Instruction (Models634F/634B) ous safetyand operational decalsare located on your unit (see Figure 1-2)t Keepthe decalsclean and legibleat all times. Starting Stabilization Contactyour local service dealerorthe factory Message (onengine) for replacementsif any decalsare damagedor missing. Warning Messages Referto the PartsList pagesinthis Manualfor decal locations, descriptions and part num-
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SECTION 2: ASSEMBLY ASSEMBLY STEPS WARNING: To prevent personal injury or property STEP 1: UNPACKING INSTRUCTIONS m damage,do not start the engine NOTE: While unpacking, do not severely until all assemblysteps are bendany control cables. complete andyou have read and understandthe safety and 1. Thetiller weighs approximately133 lbs. operating instructions in this Do not attempt to remove it from the ship- manual. ping platform until instructed to do so m these Assembly steps. INTRODUCTION 2. Rem
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Fig. 2-3: Wheel in FREEWHEEL position STEP 4: INSTALL FORWARD CLUTCH CABLE 1. Attach the forward clutch cable bracket (P, Fig.2-4) to the handlebarsupport AI with a 1/4"-20 x 1-1/42hex hd. screw (R) and V4"-20 hex Iocknut (S). Tightense- curely. 2. Carefully unwrap the forward clutch ca- ble (cable without anattached knob, from its shipping position and slide the thin ca- ble wire (T.Fig.2-4 into the slot in the ca- ble bracket. Push the cable connector (U. Fig.2-4) upthrough the holein the brac
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4. Thread the #10-24 hex nut (Z, Fig. 2-5) halfway onto the screw (V). 5. Thread the screw IV_ into the cable ad- juster (X). 6. Hookthe cable spring (W, Fig.2-6) into the V-shaoed bend in the ForwardClutch Bail _Y). 7. Checkfor correct tension onthe forward drive belt by taking two measurements of the cable spnng, as follows: a. With the ForwardClutch Bail (Y, Fig.2- 6/in an open(released) position, measure the length of the cable spring (W from the outermost coil to the outermost coil. n. Sque
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31bY I_: L;I'IEL;KLEVEL UI- _IbY I: AUU MUIUH UIL Thetransmission wasfilled with gearoil at Thetiller is shipped withoutoil in the en- the factory. However,you should checkthe gine. gearoil level at this time to makecertain it IMPORTANT:Do not start the engine with- is correct. out first adding motor oil. Severeengine IMPORTANT: Do not operatethe tiller if the damagewill result if the engineis run with- out oil. gearoil level is low. Doing so will result in severedamageto the transmission com- 1
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SECTION 3: FEATURES ANDCONTROLS WARNING: Before operating your machine, carefully readand understand all safety, controls and operating instructions in this Manual,the separateEngine Forward Reverse ClutchControl Owner's Manual,and on the (Models634F/634B) decalson the machine. Failureto follow these instructions can result in DepthRegulator serious personal injury. INTRODUCTION Handlebar HeightAdjustment This Section describes the location and function of the controls on your tiller. Re- fer to
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begintilling at avery shallow depth setting and gradually increasethe tilling depth. caution when reversing or ,_ WARNING: Useextreme pulling the machinetowards WARNING: Do not attempt you. Look behindto avoid to till too deeply too quickly. obstacles. Graduallywork down to deeper Neverattempt to till in reverse. tilling depths. Failureto follow this warning Placethe DepthRegulator could result in personal injury Lever in the "travel" position or property damage. before starting the engine. This
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SECTION 4: OPERATION 1. Complete the Pre-Start Checklist on WARNING: Before Reverse Clutch Control this page. operating your machine, (Models634F/634B) carefully readand understand 2. Putthe wheels inthe WHEELDRIVEpo- all safety (Section 1), controls sition (see WheeIDrivePins inSection 3 of (Section 3) and operating this manual). instructions (Section 4) inthis Manual,the separateEngine prevent serious personal injury ,_ WARNING: To help Owner's Manual,and on the Clutch Bail or damageto equipme
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4. For forward motion of the wheelsand (b) Swing the handlebarto the left so the tines: right wheel takesa "step" backward.Next (a) Pull ForwardClutch Bail (Fig. 4-1) up swing the handlebarto the right so the left againsthandlebar. Releasebailto stop for- wheel"steps" backward.Repeatas needed. ward motion of wheels and tines. (c) If longer distances needto becovered (b) When tilling, relax and let the wheels in reverse,shut off the engine, then place the two wheelsin FREEWHEEL. pull the unit whi
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TILLING TIPS& TECHNIQUES • Avoid pushingdown on the handlebarsin anattemptto forcethe tiller to dig deeper. Doing Tilling Depths so takesthe weightoff the poweredwheels,causingthemto losetraction.Without the wheels helpingto holdthe tiller back,the tineswill attemptto propelthe tiller - often causingthe tiller _=i, WARNING: Before to skip rapidly acrossthe ground. (Sometimes,slight downwardpressureonthe handlebars A _• tilling, Contactyour will helpgetthrough a particularlytough sectionof sodor
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TILLING TIPS& TECHNIQUES (CON'T) PowerComposting Powercompostingsimply meanstillingunderand burying in thesoil all mannerof organic WARNING: When power mattersuchas crop residues,leaves,grassclippingsandcovercrops. This materialwill de, composting, do not keepthe composeduring the non-growingseasonandadd imPortantnaturalnutrientsto the so DepthRegulator Leverat a Thefirst placeto beginis with crop residuessuchasleftovervines,stalks,stemsand roots• deepsetting if the ti!ler jumps Powercompostthes
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TILLING TIPS& TECHNIQUES (CON'T) TerraceGardening(continued) • Tocreateaterrace, startat the top of the slopeandworkdown.Gobackandforth acrossthe first rowas shownin Fig.4-10. • Eachsucceedinglowerterraceisstartedbywalkingbelowtheterraceyou'repre- e_ll_l___....__,_,.. _e paring. Foraddedstabilityof thetiller,alwayskeepthe uphillwheelinthe soft, new- ly tilled soil. Do not till the last 12"or more of the downhill outsideedgeof each _1_ terrace. This untilled strip helps preventsthe terraces from
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SECTION 5: MAINTENANCE TILLERLUBRICATION If a cover is leaking,check for loose ,_ WARNING: Before screws. If the screws aretight, a new inspecting, cleaning or servicing After every 10 Operatinghours, oil or gasket or oi! seal may be required. the machine, shut off engine, grease the lubrication points shown in wait for all moving partsto come If the leak is from around a shaft and oil Figure5-1 and described belOW, to a complete stop, disconnect seal, the oil seal probably needsto be Useclean l
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WARNING: Beforeinspecting, cleaning or servicing the machine,shut off engine, wait for all moving partsto come to a complete stop, disconnect spark plug wire and move wire awayfrom spark plug. Failureto follow these instructions can result in serious personalinjury or property damage. 4. The gear oil level is correct if the gear B. ToDrainthe TransmissionGear Oil: BOLO TINES oil is approximately halfway upthe side of Thetransmission gear oil does not needto The bole tines will wear with use and
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WARNING: Beforeinspecting, cleaning or servicing the machine,shut off engine, wait for all moving partsto come to a complete stop, disconnect spark plug wire and move wire awayfrom spark plug. Failureto follow these instructions can result in serious personalinjury or property damage. h Unthreadthe hex nut IC, Figure5-4) halfway upthe adjustment screw (D_. c. Unhookthe top of the spring from the Forward Clutch Bail. d. Usepliers to preventthe adjuster (B_ FF_ONTi FORWARD from turning and turn th
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WARNING: Beforeinspecting, cleaning or servicing the machine,shut off engine, wait for all moving partsto come to a complete stop, disconnect spark plug wire and move wire awayfrom spark plug. Failureto follow these instructions can result in serious personalinjury or property damage. 5. Releasethe ReverseClutch Control FORWARD CLUTCH ReplacementBelt Information knob.and then unthread the inner jam nut BAILADJUSTMENT If the drive belt needsto be replaced,see (C, Figure 5-6) oneto two turns. Pull
