Troy-Bilt 643B Features And Controls, WARNING Before, Introduction, Engine Controls, Freewheel

SECTION 3: FEATURES AND CONTROLS

WARNING: Before

operating your machine, carefully read and understand all safety, controls and operating instructions in this Manual, the separate Engine Owner’s Manual, and on the decals on the machine. Failure to follow these instructions can result in serious personal injury.

INTRODUCTION

This Section describes the location and function of the controls on your tiller. Refer to the following Section, Operation for de- tailed operating instructions.

Practice using these controls, with the en- gine shut off, until you understand the op- eration of the controls and feel confident with each of them.

ENGINE CONTROLS

Refer to the engine manufacturer’s Engine Owner’s Manual (included in the tiller liter-

Forward Clutch Bail	Reverse Clutch Control
	(Models 643B & 645A)
	Depth Regulator
	Handlebar Height Adjustment
	Wheel Drive Pin
	(on each wheel)

Figure 3-1: Tiller features and controls. See separate Engine Owner’s Manual to identify engine controls.

ature package) to identify the controls on your engine.

IMPORTANT: The control for stopping the engine is located on the engine.

WHEEL DRIVE PINS

Each wheel is equipped with a wheel drive Klik pin (A, Figures 3-2 and 3-3) that se- cures the wheel to the wheel shaft (B). The wheels can be positioned in either a WHEEL DRIVE or a FREEWHEEL mode.

WARNING: Never allow either of the wheels to be in the FREEWHEEL position when the engine is running. Always put both wheels in the WHEEL DRIVE position before starting the engine.

Failure to comply could cause loss of tiller control, property damage, or personal injury.

Before starting the engine, put both wheels in the WHEEL DRIVE position by inserting the wheel drive Klik pins through the wheel hubs and the wheel shaft. Doing so “locks” the wheels to the wheel shaft, causing the wheels to turn when either the

Forward Clutch Bail (all models) or the Re- verse Clutch Control (Models 643B & 645A) is engaged.

Use the FREEWHEEL mode only when the engine is not running. In FREEWHEEL, the wheel drive pins are placed only through the holes in the wheel shaft (not the wheel hubs), thus allowing the wheels to turn freely when you manually move the tiller.

To place the wheels in WHEEL DRIVE or

FREEWHEEL:

1.Stop engine, disconnect spark plug wire from spark plug and allow engine to cool.

WARNING: Do not place tiller on its side when changing wheel drive positions. Doing so could result in gasoline leaking from the fuel tank.

Failure to follow this instruction could result in personal injury or property damage.

2.Raise one wheel about one inch off the ground and place a sturdy support under the transmission.

3.Remove Klick Pin (A, Figures 3-2 and 3-

3) from wheel drive shaft (B).

4.FOR WHEEL DRIVE MODE (Figure 3-2): Slide wheel outward and align holes in

A

C

B

Figure 3-2: WHEEL DRIVE position.

wheel hub (D, Figure 3-2) and wheel shaft (B). Insert Klik pin (A) through wheel hub (C) and wheel shaft (B). Repeat with the other wheel and then remove the sup- port from beneath the transmission.

5.FOR FREEWHEEL MODE (Figure 3-3): Slide the wheel inward and insert the Klik pin (A, Figure 3-3) only through the hole in the wheel shaft (B). Repeat for the other wheel and then remove the support from beneath the transmission.

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