Troy-bilt 645A-Bronco User Manual

Operator’s ManualWarning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-covered, br

Wheel Drive Pins Each wheel is equipped with a WheelDrive Pin (A, Figures 3-2 and 3-3) thatsecures the wheel to the wheel shaft (B).The wheels can be

11Section 3: Features and Controls 4. FOR WHEEL DRIVE mode (Figure 3-2):Slide the wheel outward and align theholes in the wheel hub (D, Figure 3-2))a

12Section 3: Features and ControlsDepth Regulator LeverThis lever (G, Figure 3-5) controls thetilling depth of the tines. Pull the leverstraight bac

13Figure 4-1Section4OperationWARNINGBefore operating yourmachine, carefully read andunderstand all safety (Section1), controls (Section 3) andoperatin

Starting the EngineThe following steps describe how to startand stop the engine. Do not attempt toengage tines or wheels until you haveread all the o

Section 4: Operation Let the tiller move at its own pace and donot push down on the handlebars to try todig deeper– this takes weight off thewheels,

16Section 4: OperationTilling Tips &TechniquesLet the tiller do the work• While tilling, relax and let the wheelspull the tiller along while the

17Section 4: Operation Tilling Tips & TechniquesClearing the tinesDry grass, stringy stalks or tough vinesmay become tangled in the tines. Follo

18Section 4: OperationLOADING AND UNLOADING THETILLER• Before loading or unloading, stop theengine, wait for all parts to stopmoving, disconnect the

19Section5MaintenanceREQUIRED MAINTENANCE SCHEDULEBefore Every Every AsPROCEDURE Each 10 30 NotedUse Hours HoursCheck engine oil level•And every 5op

2For more details about your unit, visit our website at www.troybilt.comTABLE OF CONTENTSContent PageCalling Customer Support . . . . . . . . . . . .

20Section 5: Maintenance TILLER LUBRICATIONProper lubrication of the tiller is anessential part of maintenance. Afterevery 10 operating hours, oil o

Section 5: MaintenanceB. To Drain the Transmission Gear Oil:The transmission gear oil does not needto be changed unless it has been contam-inated wit

22Clutch Bail all the way up to the bottom ofthe upper handlebars, you will need toloosen the belt tension.Also check the belt for cracks, cuts orfray

Section 5: Maintenance WARNING Before inspecting, cleaning or servicing the unit, shut off engine, wait for allparts to come to a complete stop, dis

24Section 5: Maintenance WARNING Before inspecting, cleaning or servicing the unit, shut off engine, wait for allparts to come to a complete stop, d

25Section 5: Maintenance TROUBLESHOOTINGBefore performing any corrections, refer to the appropriate information in this Manual, or in the Engine Owne

26Section6Parts List51314211181716109841512641517981920137212224232572627

27MODELS 644H & 645AREF NO.PART NO. DESCRIPTION1 1185469 Spirol Pin2 710-0597 Hex Hd. Screw, 1/4-20 x 13 710-0599 Screw, Self-Tapping,1/4-20 x 1/2

28MODELS 644H & 645A5102515112162131320417112572272520682062314181879

29MODELS 644H & 645AREF NO.PART NO. DESCRIPTION1 1916719 Cable Assembly, Reverse Clutch2 1916755 Upper Handlebar3 1917479 Bail, Forward Clutch4 19

3Training1. Carefully read thisOwner’s Manual, theseparate Engine Owner’sManual, and any other literature you mayreceive. Be thoroughly familiar with

30MODELS 644H & 645A* Use as required to obtain between .005” and .015” allowable end-play.REF NO.PART NO. DESCRIPTION1 GW-9517 Snap Ring2 GW-1714

31MODELS 644H & 645A* Use as required to obtain between .005” and .030” allowable end-play.REF NO.PART NO. DESCRIPTION1 GW-9512 Retainer, Snap Rin

32MODELS 644H & 645AREF NO.PART NO. DESCRIPTION1 GW-9727 Plug, Transmission Oil Fill2 710-04049 Hex Hd. Flange Screw, 5/16-18 x 5/8,Gr. 53 736-011

33ENGINETINE SHAFTDENOTES CUTTING EDGE OF TINEMODELS 644H & 645AREF NO.PART NO. DESCRIPTION1 710-3008 Hex Hd. Screw, 5/16-18 x 3/4, Grade 52 1817

34MODELS 644H & 645A92428203025271111517192811210141638323132783719393343834FORWARDCLUTCH CABLE354228242222246132128162918362340REVERSECLUTCH CABL

35MODELS 644H & 645AREF NO.PART NO. DESCRIPTION1 1107382 Flat Washer, 5/162 1108841 Key, 3/16" x 1-1/2"3 619-04016 Pulley, Engine Drive4

TROY-BILT TILLER LIFETIME LIMITED WARRANTYWHAT PRODUCT All Troy-Bilt branded rear tine walk-behind tillers with gear drive transmissions.IS COVERED T

7. Take all possible precautions whenleaving the machine unattended. Stop theengine. Disconnect spark plug wire andmove it away from the spark plug.

Section 1: Safety 5DecalsFor your safety and the safety of others,various safety and operational decals arelocated on your unit (see Figure 1 below).

6WARNINGTo prevent personal injury orproperty damage, do not startthe engine until all assemblysteps are complete and youhave read and understand thes

7Section 2: AssemblySTEP 2: Attach Handlebar1. Attach the two legs of the handlebarsupport (A, Fig. 2-2) loosely to the innersides of the tiller fram

8Section 2: AssemblySTEP 4: Install Forward Clutch Cable1. Place the forward clutch cable bracket(P, Fig. 2-4) on the handlebar support (A).Attach th

9Section 2: AssemblyFig. 2-8: Install reverse cable mountingbracket and the reverse clutch cable.4. Insert the cable up through the slot inthe cable