Walker R21 User Manual

Operating Instructions R21
22
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
position, a friction lock holds any forward speed
setting from 0 to 6 mph (0 to 10 km/h).
NEUTRAL-PARK
FORWARD
Forward Speed Control FSC
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 selected 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.
Blade Clutch Switch (PTO)
The blade clutch switch (red button) is located be-
side the steering levers. It is used to engage and
disengage the mower blades. The blade clutch
switch has two positions. Pull out the switch to
engage the PTO that drives the blades and push
down the switch to disengage the PTO and en-
gaged the blade brake.
Parking Brake
The parking brake uses a positive mechanical lock
similar to the Park position on an automotive auto-
matic transmission. The brake rests in a forward
notch in the body panel when it is engaged. Push
the lever to the left and then back to release the
brake.
IMPORTANT: Stop the tractor completely be-
fore engaging the parking brake. 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
Disengaged
Position
Parking Brake Disengaged
Circuit Breaker
The auto reset 30 amp master circuit breaker is
located in the rear left of the chassis and protects
the electrical system. In addition, there are two
(2) 5-amp fuses located to the right of the tractor
serial number plate that provide protection to the
safety circuits.

Walker R21 Specifications

General

Drive System	Hydrostatic
Cutting Height	1.5 - 4.5 inches
Engine	Kohler CH740
Engine Type	Air-cooled
Cutting Width	52 inch
Wheel Size	20 inches (rear)