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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.
WARNING: Before starting engine, be
sure that both wheels are in WHEEL
DRIVE position. See Wheels Drive Pins
for instructions.
Engaging the Forward Clutch Bail or
Reverse Clutch Control (if equipped)
when the wheels are not in WHEEL
DRIVE could allow the tines to rapidly
propel the tiller forward or backward.
Failure to comply could cause loss
of tiller control, property damage, or
personal injury.
FORWARD CLUTCH BAIL
The Forward Clutch Bail (D, Figure 3-4) controls the
engagement of forward drive to the wheels and tines.
To operate the Forward Clutch Bail:
1. Put wheels in WHEEL DRIVE position (see “WARN
-
ING” statement above).
2. Lift and hold the clutch bail (D, Figure 3-4) against the
handlebar to start the wheels and tines rotating in a
forward direction.
3. Release the clutch bail to disengage (stop) the wheels
and tines (the engine will continue to run).
REVERSE CLUTCH CONTROL
(Models 643B & 645A only)
The Reverse Clutch Control (E, Figure 3-4) controls the
engagement of reverse drive to the wheels and tines. The
reversing feature is used for maneuvering the tiller
only — never engage the tines in the ground while
operating in reverse.
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 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 support from beneath the
transmission.
WARNING: Use extreme caution when
reversing or pulling the machine
towards you. Look behind to avoid
obstacles.
Never attempt to till in reverse.
Failure to follow this warning could
result in personal injury or property
damage.
To operate the Reverse Clutch Control:
1. Put wheels in WHEEL DRIVE position (see “WARN-
ING” statement at the left).
2. Stop all tiller motion by releasing the Forward Clutch
Bail.
3. Lift the handlebar until the tines clear the ground,
look behind you to avoid any obstacles, and then pull
the control knob (E, Figure 3-4) out. The wheels and
tines will rotate in a reverse direction.
Figure 3-2: WHEEL DRIVE position.
Figure 3-3: FREEWHEEL position.
4. Release the control knob to disengage (stop) the
wheels and tines (the engine will continue to run).
DEPTH REGULATOR LEVER
This lever (F, Figure 3-5) controls the tilling depth of
the tines. Pull the lever back and slide it up or down to
engage the notched height settings.
The “travel position” (highest notch) raises the tines
approximately 1-1/2” off the ground, allowing the tiller to
be moved without the tines contacting the ground. This
setting should also be used when starting the engine.
Figure 3-4: All models have a Forward Clutch Bail (E). Only
Model 634A have a Reverse Clutch Control (F).
Do not attempt to till
too deeply too quickly.
Gradually work down
to deeper tilling
depths.
Place the Depth
Regulator Lever in
the “travel” position
before starting the
engine. This position
prevents the tines
from touching the
ground until you are
ready to begin tilling.
Failure to follow this
warning could result
in personal injury or
property damage.
See your engine
manual packaged with
your unit for detailed
instructions pertaining
to starting the engine.
WARNING
3
Features
and
Controls