R21 Operating Instructions
25
Starting the Engine
CAUTION
Before operating the mower, read and un-
derstand all Safety Instructions and Operat ing
Instructions.
WARNING
NEVER run the engine in an enclosed or poor-
ly ventilated area. Engine exhaust contains
carbon monoxide, an odorless and deadly
gas.
1. Before attempting to start the engine, make
sure:
□ The operator is seated.
□ The Forward Speed Control (FSC) is in
NEUTRAL-PARK position.
□ The parking brake is ENGAGED.
□ The blade clutch (PTO) is DISENGAGED.
□ The deck hinges are LOCKED.
2. Move the throttle 1/4 to 1/2 open (toward
FAST).
3. Turn the ignition switch to the START position
to start the engine. Release the key to “I”
(RUN) position as soon as the engine starts.
IMPORTANT: DO NOT crank the engine con-
tinuously for more than 10 seconds at a time.
If the engine does not start, turn the key to the
OFF position and allow a 60 second cool-
down period between starting attempts. Fail-
ure to follow these guidelines can damage the
starter motor and shorten battery life. Consult
your Walker dealer or authorized Kohler dealer
for additional help.
CAUTION
A safety interlock switch system PRE VENTS
CRANKING the engine with any one of these
three controls in the OPERATING position: (1)
Forward Speed Control out of neutral, (2)
blade clutch (PTO) engaged, or (3) parking
brake disengaged. If the engine cranks other-
wise, the safety system is not working and
should be repaired or ad justed before operat-
ing the mower. The deck hinge lock switch will
allow the engine to crank but not start. DO
NOT disconnect safety switches; they are for
the operator’s protection.
Adjusting Ground Speed and
Steering
CAUTION
Learn to START, STOP, and MANEUVER
the mower in a large, open area. If the opera-
tor has not operated a ma chine with lever
steering or dual hydrostatic transmissions,
steer ing and ground operation should be
learned and practiced until the operator is
completely comfortable handling the ma chine
BEFORE ATTEMPTING TO MOW.
DANGER
Keep feet on footrests at all times when the
machine is moving. Never operate the tractor
without a deck or implement installed.
1. Sitting on the mower with the engine started,
move the FSC out of NEUTRAL-PARK posi-
tion to the desired forward speed. DO NOT
hold for ward on steering levers. It is not nec-
essary to hold the FSC lever in position since
a friction lock maintains the selected lever
position (and forward travel speed).
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