Troy-Bilt 630B-Tuffy, 634F-Bronco, 634B-Super Bronco Introduction, Engine Controls, Freewheel

10

Section

3

Features and Controls

WARNING

Before operating your machine, care- fully 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 detailed operating instructions.

Forward Clutch Bail

Depth Regulator

Handlebar Height

Adjustment

Wheel Drive Pin (on each wheel)

Reverse Clutch

Control (Models

634F/634B)

Practice using these controls, with the engine shut off, until you understand the operation of the controls and feel confi-

Figure 3-1: Tiller features and controls (5.5HP Model shown). See separate Engine Owner’s Manual to identify engine controls.

dent with each of them.

ENGINE CONTROLS

Refer to the engine manufacturer’s Engine Owner’s Manual (included in the tiller liter- 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 pin (A, Figures 3-2 and 3-3) that secures 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 per- sonal injury.

Before starting the engine, put both wheels in the WHEEL DRIVE position by inserting the wheel drive 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 Reverse Clutch Control (Models 634F and 634B) 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 hairpin cotter (C, Figures 3-2 and 3-3) from wheel drive pin (A).

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

(B). Insert wheel drive pin (A) through

wheel hub (D) and wheel shaft (B). Secure wheel drive pin with hairpin cotter (C) by pushing hairpin cotter in as far as it will go. Repeat with the other wheel and then remove the support from beneath the transmission.

A

D

B

C

Figure 3-2: WHEEL DRIVE position.

5.FOR FREEWHEEL MODE (Figure 3-3): Slide the wheel inward and insert the wheel drive pin (A, Figure 3-3) only through the hole in the wheel shaft (B). Secure wheel drive pin with hairpin cotter

(C) by pushing hairpin cotter in as far as it will go. Repeat for the other wheel and then remove the support from beneath the transmission.