Troy-Bilt 645A-Bronco Operating the Tiller, Starting the Engine, Stopping the Engine and Tiller

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Section 4: Operation

Starting the Engine

The following steps describe how to start and stop the engine. Do not attempt to engage tines or wheels until you have read all the operating instructions in this Section. Also review the safety rules in Section 1: “Safety” and the tiller and engine controls information in Section 3: “Features and Controls.”

CAUTION

To help prevent serious personal injury or damage to equipment:

Before starting engine, put both wheels in the WHEEL DRIVE position. Never have

the wheels in the FREEWHEEL position when the engine is running. When

the wheels are in FREEWHEEL, they do not hold back the tiller and the tines could propel the tiller rapidly backward.

Before starting engine, put Forward Clutch Bail (all Models) and Reverse Clutch Control in neutral (disen- gaged) positions by releasing levers.

Never run engine indoors or in enclosed, poorly venti- lated areas. Engine exhaust contains carbon monoxide, an odorless and deadly gas.

Avoid engine muffler and nearby areas. Temperatures

in these areas may exceed 150oF.

1.Complete the “Pre-Start Checklist” on the previous page.

2.Put the wheels in the WHEEL DRIVE position (see “Wheel Drive Pins” in Section 3).

3.Put the Depth Regulator Lever in the

“travel” position (lever all the way down) so that the tines are clear of the ground.

4.Release all controls on the tiller.

5.If engine is equipped with a fuel valve,

turn valve to open position as instructed 14

in the separate Engine Owner’s Manual.

6.Put ignition switch and/or throttle control lever on engine in “ON,” “RUN,” “FAST” or “START” position as instructed in the separate Engine Owner’s Manual.

7.Choke or prime engine as instructed in the separate Engine Owner’s Manual.

8.Place one hand on the fuel tank to stabilize the unit when you pull the starter handle. Use the recoil starter rope to start the engine as instructed in the separate Engine Owner’s Manual. When engine starts, gradually move choke lever (on engines so equipped) to “NO CHOKE,” “CHOKE OFF” or “RUN” position.

WARNING

Hot surfaces can cause severe burns. Do not touch muffler or adjacent areas.

9.Use the “FAST” throttle speed setting when tilling.

WARNING

WARNING

Keep away from rotating tines. Rotating tines will cause injury.

Stopping the Engine and Tiller

1.To stop the wheels and tines, release the Forward Clutch Bail or the Reverse Clutch Control — whichever control is in use.

2.To stop the engine, put the throttle control lever on engine in “OFF” or “STOP” position.

OPERATING THE TILLER

The following pages provide guidelines to using your tiller effectively and safely in various gardening applications. Be sure to read “Tilling Tips & Techniques” in this Section before you actually put the tines into the soil.

This is a CRT (counter-rotating tine) tiller. As the wheels pull forward, the tines rotate backward.

This creates an “uppercut” tine action which digs deeply, uprooting soil and weeds. Don’t overload the engine, but dig as deeply as possible on each pass. On later passes, the wheels may tend to spin in the soft dirt. Help them along by lifting up slightly on the handlebar (palm facing up).

1.Follow the “Pre-Start Checklist” on the previous page. Be sure that the wheels are in the WHEEL DRIVE position.

2.Put the Depth Regulator Lever in the

“travel” position (lever all the way down) so that the tines are clear of the ground. Use this position when practicing with your tiller or when moving to or from the garden. When you are ready to begin tilling, you must move the Depth Regulator Lever to the desired depth setting (see “Tilling Tips & Techniques”). Check that the Anti-Reverse Stake swivels freely back and forth. Remove any clogged material on or around the stake.

Figure 4-2: Use one hand to guide tiller when moving forward.

3.Start the engine and allow it to warm up. When warm, put throttle control in fast speed setting.

4.For forward motion of wheels and power to the tines:

(a)Pull the Forward Clutch Bail up and hold it against the handlebar. Release the bail to stop forward motion of the wheels and power to the tines.

(b)As the tiller moves forward, relax and let the wheels pull the unit along while the tines dig. Walk behind and a little to one side of the tiller. Use a light but secure grip with one hand on the handlebars, keeping your arm loose. See Figure 4-2.

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Contents Operator’s Manual Engine Information Table of ContentsFinding Model Number Calling Customer SupportSafety TrainingNever operate the tiller under Use a deep depth regulator setting Use slower engine speedsKeep children and pets away Operating Symbols DecalsLoose Parts List Qty. Description AssemblyTools/Materials Needed for Assembly IntroductionAttach Handlebar Move Tiller Off Shipping PlatformInstall Forward Clutch Cable Install Reverse Clutch CableCheck Air Pressure in Tires Check Level Transmission Gear OilCheck Hardware for Tightness Tiller is shipped without oil in the engineFeatures and Controls Wheel Drive PinsTo Operate the Forward Clutch Bail Forward Clutch BailReverse Clutch Control To Operate the Reverse Clutch ControlTo Adjust the Handlebars Handlebar Height AdjustmentShallow Settings Deep Depth Regulator LeverInitial Operation OperationIntroduction Starting and Stopping the EngineStarting the Engine Use the Fast throttle speed setting when tillingOperating the Tiller Stopping the Engine and TillerStopping the Tiller and Engine Turning the Tiller AroundFor reverse motion of the wheels and tines Avoid tilling soggy, wet soil Let the tiller do the workTilling depths Avoid making footprintsTilling on slopes Tilling across slopes without using terracesClearing the tines Tilling up and down slopesLoading and Unloading the Tiller Every MaintenanceRequired Maintenance Schedule HoursCheck for OIL Leaks Transmission Gear OIL ServiceTiller Lubrication Check HardwareTines Removing and Installing Tine AssembliesRemoving and Installing Individual Tines Tine InspectionPosition To Check Forward Belt TensionTo Check Reverse Belt Tension Forward Clutch Bail AdjustmentReverse Belt Replacement Information Spark Plug Service Engine OIL ServiceAIR Cleaner Service Engine CleaningTroubleshooting Parts List Models 644H & 645A Models 644H & 645A Models 644H & 645A GW-1224-3 Front 619-04013 RIGHT-HAND Tine 2926 Models 644H & 645A TROY-BILT Tiller Lifetime Limited Warranty TROY-BILT LLC, P.O. Box 361131, Cleveland, Ohio 44136-0019