Yamaha YZ-Serie Fahrer- Und Wartungshandbuch Seite 56

STARTING AND BREAK-IN
CAUTION:
After the break-in or before each race,
G
you must check the entire machine for
loose fittings and fasteners as per
"TORQUE-CHECK POINTS".
Tighten all such fasteners as required.
When any of the following parts have
G
been replaced, they must be broken in.
CYLINDER AND CRANKSHAFT:
About one hour of break-in operation is
necessary.
PISTON, RING AND GEARS:
These parts require about 30 minutes of
break-in operation at half-throttle or less.
Observe the condition of the engine care-
fully during operation.
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GEN
INFO