Yamaha YZ250F(N)/LC Owner's Service Manual page 60

STARTING AND BREAK-IN
6. Pull the decompression lever to the han-
dlebar and depress the kickstarter crank
10 ~ 20˚.
7. Release the decompression lever and
return the kickstarter crank to its original
position and then kick the kickstarter
crank.
WARNING
Do not open the throttle while kicking the
kickstarter crank. Otherwise, the kick
starter may kick back.
8. Return the cold starter knob to its original
position and run the engine at 3,000 ~
5,000 r/min for 1 or 2 minutes.
NOTE:
Since this model is equipped with an accelera-
tor pump, if the engine is raced (the throttle
opened and closed), the air/fuel mixture will be
too rich and the engine may stall. Also unlike a
two-stroke engine, this model can idle.
CAUTION:
Do not warm up the engine for extended
periods of time.
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