Engine Break-In - Yamaha PW50(X) Owner's Manual

Rear
WARNING
G
Avoid braking hard or suddenly
(especially when leaning over to
one side), otherwise the motor-
cycle may skid or overturn.
G
Keep in mind that braking on
wet surfaces is much more diffi-
cult.
G
Ride slowly down a hill, as brak-
ing downhill can be very diffi-
cult.
OPERATION AND IMPORTANT RIDING POINTS

Engine break-in

There is never a more important period
in the life of your engine than the first 5
hours of riding. It is also important to ac-
custom the rider to the motorcycle dur-
ing this time. Please read the following
information carefully.
Since the engine is brand new, do not
put an excessive load on it for the first 5
hours of operation. The various parts in
EWA14571
the engine wear and polish themselves
to the correct operating clearances.
During this period, prolonged full-throt-
tle operation or any condition that might
result in engine overheating must be
avoided. However,
full-throttle operation under load (i.e.,
two to three seconds maximum) does
not harm the engine. Each full-throttle
acceleration should be followed with a
substantial rest period for the engine.
To allow the engine to cool down from
the temporary buildup of heat, cruise at
a lower engine speed.
After the first 5 hours of operation, thor-
oughly check the motorcycle for loose
parts, oil leakage and any other prob-
lems. Be sure to inspect and make ad-
EAU42030 justments
cables. In addition, check all fittings and
fasteners for looseness, and tighten if
necessary.
CAUTION:
If any engine trouble should occur
during the engine break-in period,
immediately have a Yamaha dealer
check the vehicle.
momentary
5-3
thoroughly, especially
ECA10270
2
3
4
5
6
7
8
9