Walker R21 User Manual

Operating Instructions R21
28
IMPORTANT: DO NOT engage the blade clutch if
the deck is not installed on the tractor.
CAUTION
An operator presence switch (seat switch) will
cause the engine to stop if the blade clutch is
engaged and the operator is not in the seat.
The function of this safety switch should be
checked by the operator raising off the seat
and engaging the blade clutch; the engine
should stop. If the switch is not working, it
should be repaired or replaced before operat-
ing the mower. DO NOT disconnect the safety
switches; they are for the operator’s protec-
tion.
CAUTION
If the cutting blades strike a stationary ob ject
while mowing, stop the mower imme diately,
remove the key, lift the deck, and inspect the
deck and blades thoroughly for damage. Also,
make sure the blade retain ing bolts are still
torqued to 70 lb·ft (95 N·m).
WARNING
A brake stops the cutter blades from free-
wheeling within ve (5) seconds after disen-
gaging the clutch. If the brake sys tem mal-
functions and the blades do not stop within ve
(5) seconds, the brake should be repaired or
replaced before op erating the mower. Contact
your Walker dealer for service.
Stopping the Machine
1. Pull the steering levers to the NEUTRAL
position and then move the FSC lever to the
NEUTRAL-PARK position.
2. Slow the engine to a fast idle; put the throttle
in the 1/2 throttle position.
3. Disengage the blade clutch.
IMPORTANT: DO NOT disengage the blade
clutch with high engine speed (above 1/2
throt tle) since the brake action on the blade
drive will cause premature wear of the brake
element.
4. Turn the ignition switch to OFF. When stop-
ping the engine, do not reduce the throttle be-
low 1/2 speed. Since the engine is equipped
with a fuel shutoff solenoid, stopping at low
idle may cause engine run-on or backring.
5. Engage the parking brake by moving the lever
forward and to the right.
IMPORTANT: It is recommended to always
engage the parking brake when turning off
the mower. The mower should not roll freely
when the engine is stopped, but if the mower
is parked on a slope, it is possible it will creep
especially if the transmission is warm from
operation.
WARNING
Remove the key from the ignition switch when
leaving the mower unattended. This will pre-
vent children and inexperienced operators
from starting the engine.

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)