Troy-Bilt 643D 사용자 설명서

13

Stopping the Engine and Tiller
1. To stop the wheels and tines, release the 
Forward Clutch Bail (all models) or the Re-
verse Clutch Control (Models 643B & 
645A) — whichever control is in use.
2. To stop the engine, put the ignition 
switch and/or the throttle control lever in 
the “OFF” or “STOP” position.

The following operating instructions pro-
vide guidelines to using your tiller effec-
tively and safely. Be sure to read Tilling 
Tips & Techniques in this Section before 
actually putting the tines into the soil.

This is a “Counter-Rotating-Tine” (CRT) 
tiller. It operates differently from “Stan-
dard-Rotating-Tine” (SRT) tillers. As the 
wheels pull forward, the tines rotate back-
ward, creating an “uppercut” action which 
digs deeply, uprooting soil and weeds.

1. Follow the Pre-Start Checklist at the be-
ginning of this Section. Be sure that the 
wheels are in the WHEEL DRIVE position.
2. Move the Depth Regulator Lever all the 
way down, so that the tines clear the 
ground. Use this position when practicing 
with the tiller and when traveling between 
tilling sites. Before actually tilling, move 
the lever to the desired depth setting (see 
Tilling Tips & Techniques).

3. Start engine and allow it to warm up. 
Then put throttle in “FAST” setting.
4. For forward motion of the wheels and 
power to the tines:
(a) Pull Forward Clutch Bail (Fig. 4-1) up 
against handlebar. Release bail to stop for-
ward motion of wheels and tines.
(b) When tilling, relax and let the wheels 
pull the unit while the tines dig. Walk be-
hind and a little to one side of the unit. Use 
one hand, yet keep a light—but secure—
grip on the handlebar (while keeping your 
arm loose). See Fig. 4-2. Let the unit move 
at its own pace and do not push down on 
the handlebars to try and force the tines to 
dig deeper — this takes weight off the 
wheels and reduces traction.

Do not push 

down on the handlebars to try 
to make the tiller till more 
deeply. This prevents the 
wheels from holding the tiller 
back and can allow the tines to 
rapidly propel the tiller forward, 
which could result in loss of 
control, property damage, or 
personal injury.

5. For reverse motion of the wheels and 
tines (Models 643B & 645A only):
(a) Look behind and exercise caution when 
operating in reverse. Do not till while in 
reverse.
(b) Stop all forward motion. Lift handlebar 
with one hand until tines are off the ground 
and then pull Reverse Clutch Control knob 
out (see Fig. 4-3). To stop reversing, let go 
of Reverse Clutch Control knob.

6. To move the Model 643C in reverse for 
short distances:
(a) Release forward Clutch Bail. Then lift 
handlebar until tines are off the ground.

(b) Swing the handlebar to the left so the 
right wheel takes a “step” backward. Next 
swing the handlebar to the right so the left 
wheel “steps” backward. Repeat as needed.
(c) If longer distances need to be covered 
in reverse, shut off the engine, then place 
the two wheels in FREEWHEEL.
7. To Turn the Tiller Around:
(a) Practice turning the tiller in a level, 
open area. Be very careful to keep your feet 
and legs away from the tines.
(b) To begin a turn, lift the handlebars until 
the tines are out of the ground and the engine 
and tines are balanced over the wheels (Fig. 
4-4). 
(c) With tiller balanced, push sideways on 
handlebar to steer in direction of turn (Fig. 
4-5). After turning, slowly lower tines into 
soil to resume tilling.

Stopping the Tiller and Engine
1. To stop the wheels and tines, release the 
Forward Clutch Bail (all models) or the Re-
verse Clutch Control (Models 643B & 
645A) — whichever control is in use.
2. To stop the engine, put the ignition 
switch and

⁄or the throttle control lever in 

the “OFF” or “STOP” position.