Yamaha RAPTOR YFM660RR Owner's Manual page 154

6. Completely close the throttle lever and start
the engine by pushing the start switch.
NOTE:
If the engine fails to start, release the start switch,
then push it again. Pause a few seconds before
the next attempt. Each cranking should be as short
as possible to preserve battery energy. Do not
crank the engine more than 10 seconds on each
attempt.
7. If the engine is started with the starter (choke)
in position 1, the starter (choke) should be
returned to position 2 to warm up the engine.
If the engine is started with the starter (choke)
in position 2, keep the starter (choke) in this
position to warm up the engine.
8. Continue warming up the engine until it idles
smoothly and return the starter (choke) to po-
sition 3 before riding.
CAUTION:
See the "Engine break-in" section prior to op-
erating engine for the first time.
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