Troy-Bilt 644H-Bronco, 645A-Bronco - Manuals

6 WARNING To prevent personal injury orproperty damage, do not startthe engine until all assemblysteps are complete and youhave read and understand thesafety and operating instruc-tions in this manual. Introduction Carefully follow these assembly steps tocorrectly prepare your tiller for use. It isr...

7 Section 2: Assembly STEP 2: Attach Handlebar 1. Attach the two legs of the handlebar support (A, Fig. 2-2) loosely to the innersides of the tiller frame using two 3/8"-16x 3/4" hex hd. screws (B), two 3/8” flatwashers (C) and 3/8"-16 hex locknuts (D). 2. Using using two 5/16"-18 x ...

8 Section 2: Assembly STEP 4: Install Forward Clutch Cable 1. Carefully unwrap the forward clutch cable (the cable without a knob attached toit) from its shipping position and slide thethin cable wire (T, Fig. 2-4) into the slot inthe cable bracket. Push the cable connector(U, Fig. 2-4) up through t...

9 Section 2: Assembly Fig. 2-8: Install reverse cable mountingbracket and the reverse clutch cable. 3. Use a cable tie (EE, Fig. 2-9) to fasten the reverse clutch cable to the left sidehandlebar. 4. Test the function of the reverse clutch cable by pulling the knob out andreleasing it. The knob shoul...

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 positioned in either aWHEEL DRIVE or a FREEWHEEL mode. Before starting the engine, put bothwheels in the WHEEL DRIVE position byinserting the Wheel Dr...

11 Section 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))and the wheel shaft (B). Insert the wheeldrive pin (A) through the wheel hub andthe wheel shaft. Secure the wheel drivepin with the hairpin cotter (C)...

12 Section 3: Features and Controls Depth Regulator Lever This lever (G, Figure 3-5) controls thetilling depth of the tines. Pull the leverstraight back and slide it up or down toengage the notched height settings. The highest notch (lever all the waydown) raises the tines approximately 1-1/2" o...

13 Figure 4-1 Section 4 Operation WARNING B e f o r e o p e r a t i n g y o u rmachine, carefully read andunderstand all safety (Section1 ) , c o n t r o l s ( S e c t i o n 3 ) a n doperating instructions (Section4 ) i n t h i s M a n u a l , i n t h es e p a r a t e E n g i n e O w n e r ’sManual,...

Starting the Engine The following steps describe how to startand stop the engine. Do not attempt to engage tines or wheels until you haveread all the operating instructions in thisSection. Also review the safety rules inSection 1: “Safety” and the tiller andengine controls information in Section3: “...

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, cuts traction, and causes the tinesto try and propel the tiller. 5. For reverse motion of the wheels and tines: (a) Look behind and exercise caution wh...

16 Section 4: Operation Tilling Tips & Techniques Let the tiller do the work • While tilling, relax and let the wheels pull the tiller along while the tines dothe digging. Walk on the side that isnot yet finished (to avoid making foot-prints in the freshly tilled soil) andlightly, but securely g...

17 Section 4: Operation Tilling Tips & Techniques Clearing the tines Dry grass, stringy stalks or tough vinesmay become tangled in the tines. Followthese procedures to help avoid tanglingand to clean the tines, if necessary. • To reduce tangling, set the depth regulator to maximum depth. • While...

19 Section 5 Maintenance REQUIRED MAINTENANCE SCHEDULE Before Every Every As PROCEDURE Each 10 30 Noted Use Hours Hours Check engine oil level • And every 5 operating hours Clean engine • ▲ Check drive belt tension • ✝ Check nuts and bolts • ✝ Change engine oil • * Lubricate tiller • Service engine ...

20 Section 5: Maintenance TILLER LUBRICATION Proper lubrication of the tiller is anessential part of maintenance. Afterevery 10 operating hours, oil or greasethe lubrication points shown in Figures5-1 and 5-1A and described below. Use a good quality lubricating oil (#30weight engine oil is suitable)...

Section 5: Maintenance B. To Drain the Transmission Gear Oil: The transmission gear oil does not needto be changed unless it has been contam-inated with dirt, sand or metal particles. 1. Drain gasoline from the fuel tank or run the engine until the fuel tank is empty.See “DANGER” statement above. 2....

25 Section 5: Maintenance TROUBLESHOOTING Before performing any corrections, refer to the appropriate information in this Manual, or in the Engine Owner’s Manual, for thecorrect safety precautions and operating or maintenance procedures. Contact your local authorized Engine Service Dealer forengine ...

TROY-BILT TILLER LIFETIME LIMITED WARRANTY WHAT PRODUCT All Troy-Bilt branded rear tine walk-behind tillers with gear drive transmissions. IS COVERED This warranty begins on the date of purchase and is warranted by Troy-Bilt LLC for the life of thetiller, to the original purchaser only. WHAT IS COVE...