Engine Break-In - Yamaha SCORPIO 54D Owner's Manual

Engine break-in

There is never a more important period
in the life of your engine than the period
between 0 and 1000 km (600 mi). For
this reason, you should read the follow-
ing material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1000 km (600 mi). The various parts in
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.
OPERATION AND IMPORTANT RIDING POINTS
EAU16830
0–500 km
(0-300 mi)
8 Avoid prolonged operation above
4.700 r/min.
8 After every hour of operation,
stop the engine, and then let it
cool for five to ten minutes.
8 Vary the engine speed from time
to time. Do not operate the
engine at one set throttle posi-
tion.
EAU16970
500–1,000 km
8 Avoid prolonged operation above
8 Rev the engine freely through
5-4
(300-600 mi)
6.600 r/min.
the gears, but do not use full
throttle at any time.
NOTICE:
After 1000 km of operation, the
engine oil must be changed, and
the oil filter element cleaned.
[ECA10321]
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