Walker R21 Operator's Manual page 30

Operating Instructions
Right Hand on the
Forward Speed Control
(FSC)
Correct Operator Hand Position
NOTE: If the FSC lever will not stay in the
selected position, the friction lock needs to be
adjusted. See "Forward Speed Control Fric-
tion Adjustment" on page 56 for details.
2. Steer by pulling the lever on the side of de-
sired direction of turn, e.g., pull the LH lever
to turn left. To minimize the possibility of
overcontrol, use only one hand on both steer-
ing levers.
3. Reverse direction of the mower by pulling
back on both levers.
NOTE: Smooth action on the steering le-
vers will produce smooth mower operation.
Remem ber to keep the engine and ground
speed slow until learning the control response.
4. The FSC may be adjusted forward for faster
ground speed and backward for slower ground
speed. When mowing, ground speed should
be adjusted to match the load on the cutter
blades, i.e., as the engine pulls down in heavy
cutting, pull back on the FSC lever to reduce
ground speed. Adjusting ground speed helps
maintain a balance between engine power and
blade speed for high-quality cutting action.
5. Stop ground travel by pulling both steering
le vers backward to the NEUTRAL position
(trac tor not moving) and then moving the FSC
lever to the NEUTRAL-PARK position.
26
Pull Steering
Levers With
Left Hand
Keep Feet On
Footrest When
Moving
NOTE: If the tractor creeps forward or back-
ward with the FSC lever in the NEUTRAL-
PARK position, the transmission control needs
to be adjusted. See "Neutral Function Adjust-
ment" on page 57 for details.
CAUTION
An operator presence switch (seat switch) will
cause the engine to stop if the parking brake is
in the DISENGAGED position and/or the FSC
is out of the NEUTRAL-PARK position (tractor
stationary or moving forward) and the operator
is not in the seat. The function of this switch
should be checked by the op erator raising off
the seat, first with the parking brake DISEN-
GAGED, and then with the tractor moving for-
ward; the engine should stop. In each case, if
the safety sys tem is not working, it should be
repaired or replaced before operating the
mower. DO NOT disconnect the safety
switches; they are for the operator's pro-
tection.
WARNING
When moving forward, DO NOT suddenly put
the tractor in reverse by rapidly pulling on the
steering levers, especially when going down-
hill, as this can lift the tractor tail wheel off the
ground and set up a bucking motion due to
operator overcontrol. If bucking does occur,
immediately stop the bucking action by pulling
the Forward Speed Control (FSC) lever into
the NEUTRAL-PARK position.
R21