Section4: Operation

Starting the Engine

in the separateEngineOwner'sManual.

This creates an "uppercut" tine action

The following steps describe how to start and stop the engine. Do not attemptto engagetines or wheels until you have read all the operatinginstructionsin this Section. Alsoreview the salety rules in Section1: "Safety" and the tiller and engine controlsinlormation 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) positionsby 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.Completethe "Pre-Start Checklist" on the previous page.

2.Put the wheels in the WHEELDRIVE position (see "Wheel Drive Pins" in Section 3).

3.Put the DepthRegulator Lever in the "travel" position (lever all the way down) so that the tines areclear of the ground.

4.Releaseall controls on the tiller.

5.If engine is equipped with a fuel valve, 1t'urn4valve to open position as instructed

6.Put ignition switch and/or throttle control lever on engine in "ON," "RUN," "FAST"or "START" position as instructed in the separateEngineOwner'sManual.

7.Chokeor prime engineas instructed in the separateEngineOwner'sManual.

8.Place one hand on the fuel tank to

stabilize the unit when you pull the starter handle. Usethe recoil starter ropeto start the engine as instructed in the separate EngineOwner'sManual. When engine starts, gradually movechoke lever (on engines so equipped)to "NO CHOKE," "CHOKEOFF"or "RUN" position.

WARNING

Hot surfaces can cause severe

burns. Do not touch muffler or

adjacent areas.

9.Usethe "FAST"throttle speed setting when tilling.

WARNING

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

Stoppingthe Engineand Tiller

1.To stop the wheelsand tines, release the ForwardClutch 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.

OPERATINGTHE TILLER

The following pages provide guidelines to using your tiller effectively andsafely in various gardening applications. Besure to read "Tilling Tips & Techniques" in this Section beforeyou actually put the tines into the soil.

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

which digs deeply, uprooting soil and weeds. Don'toverload 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.Followthe "Pre-Start Checklist" on the previous page. Besure that the wheels are in the WHEELDRIVEposition.

2.Put the Depth Regulator Lever in the "travel" position (lever all the way down) so that the tines are clear of the ground. Usethis position when practicing with your tiller or when moving to or from the garden. When you are readyto begin tilling, you must move the Depth Regulator Lever to the desired depth setting (see "Tilling Tips & Techniques"). Checkthat the Anti-Reverse Stakeswivels

freelybackandforth. Removeany clogged material on or around the stake.

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

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

4.Forforward motion of wheelsand power to the tines:

(a)Pull the ForwardClutch Bailup and hold it againstthe handlebar. Release the bail to stop forward motion of the wheelsand power to the tines.

(b)As the tiller moves forward, relaxand letthe wheelspullthe unit alongwhile the tines dig. Walk behindand a little to one side of the tiller. Usea light but secure grip with one hand on the handlebars,keeping your arm loose. SeeFigure 4-2.

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Troy-Bilt 644HMBRONCO, 645AMBRONCO manual Operatingthe Tiller, Starting the Engine