23
L510010-03
C.C.
ENGINE BREAK-IN PERIOD - 7
The break-in period of your engine is the fi rst 25 hours
of operation. Proper engine break-in is essential to
achieve maximum performance, longevity and minimum
oil consumption. During the break-in period, the following
operation guidelines must be adhered to:
• After the engine is thoroughly warmed up, and
the boat is underway, open the throttle to wide
open throttle until maximum RPM is reached. DO
NOT EXCEED MAXIMUM RPM. (RPM should
cease climbing after 10 to 20 seconds).
The engine oil level should be checked often and oil
added when necessary. It must be understood that every
internal combustion engine will use a certain amount
of oil during operation to act as a lubricating and
cooling agent, especially during the break-in period. Oil
consumption should decrease and become stabilized
after approximately 100 hours of operation.
At the end of your 25-hour break-in period, contact your
dealer and have the recommended 25-hour inspection
done.
NOTICE: PCM Engines assumes no responsibility for
the costs related to the 25-hour inspection. This is the
owner’s responsibility.
WARNING
Use this procedure ONLY when conditions are such
that it can be done in complete safety.
• Reduce the throttle to 2800 - 3000 RPM, and
cruise at or below this speed for 1/2 hour.
Reduce the speed to idle. Go to wide open
throttle until maximum RPM is reached and
operate for approximately 1 minute. Reduce
throttle to 2800-3000 RPM and operate for a few
minutes. (Bringing the engine speed from idle
to wide open throttle will load the engine and
assist in seating the piston rings). This cycle can
be repeated from time to time during the fi rst 5
hours of operation, but wide open throttle should
not be sustained for more than 1 minute.
• During the early part of the break in period, the
correct propeller selection can be confi rmed.
(With a normal load aboard, the engine’s RPM
should reach, but not exceed, the maximum RPM
as listed in the specifi cations section).
• During the break in, all gauges should be
watched carefully, and the speed should be
reduced if abnormal readings become evident.
CAUTION
DO NOT operate at full throttle in neutral at any time,
or at sustained full throttle during the fi rst 5 hours
of operation. Thereafter, use sustained wide open
throttle in the event of an emergency.
CAUTION
DO NOT attempt to break in any engine by prolong
idling, or running at the dock.
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