Engine Break-In; Parking - Yamaha YFM50R Owner's Manual

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Engine break-in

There is never a more important period in the life of
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your engine than the first 20 hours of riding. For
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this reason, you should read the following material
carefully.
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Since the engine is brand new, do not put an ex-
cessive load on it for the first 20 hours. The various
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parts in the engine wear and polish themselves to
the correct operating clearances. During this peri-
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od, prolonged full-throttle operation or any condi-
tion that might result in engine overheating must
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be avoided.
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0–10 hours
Avoid prolonged operation above 1/2 throttle. Vary
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the speed of the ATV regularly. Do not operate it at
one set throttle position.
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10–20 hours
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Avoid prolonged operation above 3/4 throttle. Rev
the engine freely, but do not use full throttle at any
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time.
20 hours and beyond
The ATV can now be operated normally.
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CAUTION:
If any engine trouble should occur during the
engine break-in period, immediately have a
Yamaha dealer check the ATV.
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Parking

When parking the ATV, stop the engine, shift the
drive select lever into the drive position, apply the
parking brake, and then turn the fuel cock to "OFF".
1. Parking brake lock plate
6-5
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