Adjusting Ground Speed And Steering - Walker D21d Operator's Manual

Operating Instructions
4. After the engine starts, make sure the oil pres­
sure light goes off. If not, stop the engine im­
mediately and find the cause of the problem.
Make sure the oil pressure light is off prior to
engaging the mower blades and beginning op­
eration.

ADJUSTING GROUND SPEED AND STEERING

IMPORTANT: If the DS52 or DS62 mower deck
is in stalled on the tractor, make sure the dolly
wheel is retracted BEFORE moving.
Learn to START, STOP, and MANEUVER
the mower in a large, open area.
If the operator has not operated a ma chine
with LEVER STEERING OR DUAL HYDRO-
STATIC TRANSMISSIONS, steer ing and
ground operation should be learned and
practiced until the operator is completely
comfortable handling the ma chine BE-
FORE ATTEMPTING TO MOW.
Keep feet on footrests at all times when
the machine is moving. Never operate the
tractor without a deck or implement in-
stalled.
1. Move the FSC out of NEUTRAL-PARK position
to the desired forward speed. DO NOT hold
for ward on steering levers. It is not necessary
to hold the FSC lever in position since a friction
lock maintains the selected lever position (and
forward travel speed).
38
CAUTION
DANGER
WARNING
In case either of the transmission drive
belts break during operation, and if the
machine is on a slope, the machine will
freewheel down the slope.
control, immediately
steering levers and simultaneously (2)
Move the FSC to the NEUTRAL-PARK
position. When the machine is stopped or
moving slowly, engage the parking brake.
NOTE: This is exactly the same procedure
used to normally stop and park the machine.
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 for-
ward) 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
forward (allow 1/2 second "off the seat" for
the time delay function); the engine should
stop. In each case, if the safety sys tem is
not working, it should be repaired or re-
placed before operating the mower. DO
NOT disconnect the safety switches; they
are for the operator's protection.
NOTE:
If the FSC lever will not stay in the
selected position, the friction lock needs to be
adjusted. Refer to ADJUSTMENTS for FSC
Friction Lock in Mainte nance Instructions or
contact your Walker dealer.
2. Steer by pulling the lever on the side of desired
direction of turn, e.g., pull the LH lever to turn
left. To minimize the possibility of overcontrol,
use only one hand on both steering levers.
To maintain
(1) Release the