Engine Throttle; Forward Speed Control (Fsc); Steering Levers; Parking Brake - Walker B27i Operator's Manual

Operating Instructions

Engine Throttle

The throttle control lever (red knob) is located on
the right side of the seat and is used to control
engine speed. Moving the lever forward toward
the FAST position increases engine speed; mov-
ing it backward toward the IDLE position decreas-
es engine speed.
Throttle Location

Forward Speed Control (FSC)

Forward Speed Control (FSC) has two functions:
One is to set forward travel speed, and the other is
to establish the NEUTRAL-PARK position. When
the FSC lever is moved into the FORWARD posi-
tion, a friction lock holds any forward speed setting
from 0 to 8 mph (0 to 13 km/h). The ground speed
is proportional to the lever position; the further the
lever is advanced forward, the faster the tractor
moves. It is not necessary to hold the FSC in
position since the friction lock maintains the select-
ed lever position. Pulling back on the steering
levers overrides the FSC setting and slows or
stops forward travel. Releasing the steering levers
allows the tractor to resume forward travel at the
speed set by the FSC lever. To stop and park the
machine, the FSC lever is moved backward to the
NEUTRAL-PARK position.
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Throttle

Steering Levers

Each drive wheel is controlled by its own indepen-
dent steering lever, for both steering function and
FORWARD/REVERSE motion. The FSC lever
sets the maximum forward speed, and also sets
the forward position of the steering levers. The
steering levers operate only with a backward
pulling movement of the lever, which causes the
drive wheel for that lever to first slow down, stop,
and then reverse with a full backward lever stroke.
The levers are released to the FORWARD position
for "straight-ahead" ground travel.
NOTE: Pushing forward on the steering levers will
not cause any change in tractor motion - there will
be no steering lever reaction and there will be no
machine damage.

Parking Brake

The parking brake functions by locking a detent
arm to a cog in the hydraulic motor rotor. Moving
the lever FORWARD engages the parking brake;
moving the lever BACKWARD releases the brake.
IMPORTANT: Stop the tractor completely before
engaging the parking brake. The parking brake
uses a positive mechanical lock similar to the
PARK position on an automotive automatic trans-
mission. If the tractor is moving when the brake is
engaged, it will result in sudden stoppage and
possible internal damage to the transaxle.
NOTE: If pressure on the parking brake (e.g.,
parked on a hill) makes it impossible to release the
parking brake with the parking brake lever, move
the mower gently forward or backward to allow the
brake detent to release.
Engaged
Position
Parking Brake Engaged
B27i