Engine Break-In; Parking - Yamaha YFM90RA Owner's Manual

NOTICE
Do not tow the ATV for long distances. The
transmission is properly lubricated only when
the engine is running. Inadequate lubrication
may damage the transmission.

Engine break-in

There is never a more important period in the life of
your engine than the first 320 km (200 mi) or 20
hours of riding. For this reason, you should read
the following material carefully.
Since the engine is brand new, do not put an ex-
cessive load on it for the first 320 km (200 mi) or 20
hours. The various parts in the engine wear and
polish themselves to the correct operating clear-
ances. During this period, prolonged full-throttle
operation or any condition that might result in en-
gine overheating must be avoided.
0–160 km (0–100 mi) or 0–10 hours
Avoid prolonged operation above 1/2 throttle. Vary
the speed of the ATV regularly. Do not operate it at
one set throttle position.
160–320 km (100–200 mi) or 10–20 hours
Avoid prolonged operation above 3/4 throttle. Rev
the engine freely, but do not use full throttle at any
time.
320 km (200 mi) or 20 hours and beyond
The ATV can now be operated normally.
NOTICE
If any engine trouble should immediately have
a Yamaha dealer check the ATV.

Parking

When parking the ATV, stop the engine, apply the
parking brake, and then turn the fuel cock to "OFF".
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