Engine Break-In Procedure - Westerbeke 44A FOUR - 35C THREE Operator's Manual

ENGINE BREAK-IN PROCEDURE
DESCRIPTION
Although your engine has experienced a minimum of one
hour of test operations at the factory to make sure accurate
assembly procedures were followed and that the engine oper-
ated properly, a break-in time is required. The service life of
your engine is dependent upon how the engine is operated
and serviced during its initial 50 hours of use.
Breaking-in a new engine basically involves seating the pis-
ton rings to the cylinder walls. Excessive oil consumption
and smoky operation indicate that the cylinder walls are
scored, which is caused by overloading the engine during the
break-in period.
Your new engine requires approximately 50 hours of initial
conditioning operation to break in each moving part in order
to maximize the performance and service life of the engine.
Perform this conditioning carefully, keeping in mind the fol-
lowing:
1. Start the engine according to the
STARTING PROCE-
DURE
section. Run the engine at fast idle while checking
that all systems (raw water pump, oil pressure, battery
charging) are functioning.
2. Allow the engine to warm up (preferably by running at
fast idle) until the water temperature gauge moves into
the 130- 140°F (55- 60°C) range.
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3. While using the vessel, run the engine at various engine
speeds for the first 25 hours. Avoid prolonged periods of
idling.
4. Avoid rapid acceleration, especially with a cold engine.
5. Use caution not to overload the engine. The presence of a
grey or black exhaust and the inability of the engine to
reach its full rated speed are signs of an overload.
6. During the next 25 hours, the engine may be operated at
varying engine speeds, with short runs at full rated rpm.
Avoid prolonged idling during this break-in period.
CHECK LIST
D
Monitor the control panel gauges.
D
Check for leaks of fuel and engine oil.
D
Check for abnormal noise such as knocking, friction,
vibration and blow-back sounds.
D
Confirm exhaust smoke:
When the engine is cold- white smoke.
When the engine is warm - almost smokeless.
When the engine is overloaded - some black smoke and soot
NOTE: See the TRANSMISSION section of this manual for
break-in information on your transmission.