Starting And Break-In; Starting A Cold Engine; Starting A Warm Engine - Yamaha YZ250(R)/LC Owner's Service Manual

STARTING AND BREAK-IN

EC190000
STARTING AND BREAK-IN
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Before starting the machine, perform the
checks in the pre-operation check list.
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Never start or run the engine in a closed
area. The exhaust fumes are poisonous;
they can cause loss of consciousness and
death in a very short time. Always operate
the machine in a well-ventilated area.
EC191001

STARTING A COLD ENGINE

1. Shift the transmission into neutral.
2. Turn the fuel cock to "ON" and full open the
starter knob (CHOKE).
3. With the throttle completely closed start the
engine by kicking the kick starter forcefully
with firm stroke.
4. Run the engine at idle or slightly higher until
it warms up: this usually takes about one or
two minutes.
5. The engine is warmed up when it responds
normally to the throttle with the starter knob
(CHOKE) turned off.
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Do not warm up the engine for extended peri-
ods.
EC193001

STARTING A WARM ENGINE

Do not operate the starter knob (CHOKE). Open
the throttle slightly and start the engine by kick-
ing the kick starter forcefully with firm stroke.
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Observe the following break-in procedures
during initial operation to ensure optimum
performance and avoid engine damage.
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INFO