Brea Kin Gin - Westerbeke 10TWO Operator's Manual

BREAKING IN YOUR NEW ENGINE
While your engine has had individual test operations sufficient to
demonstrate accurate assembly and correct operation of all systems, it
still requires break in
time~
Service life of your engine is dependent on how your engine is
operated and serviced during the initial twenty hours of operation.
Your new engine needs twenty hours of conditioning operation for
breaking in each moving part, thus maximizing performance and life of
eng Ine. Perform this condi tioning carefully, keeping the following
points in mind.
1. Start engine, run idle while checking that all systems are
functioning - sea water pump, oil pressure, battery charge.
2. Warm eng ine, preferably by running propeller at fast idle
while tied down, until water temperature gauge moves into the
130 - 140 degree range.
3. Then use engine at moderate load (60%
±)
for first five
hours.
4. Avoid rapid acceleration.
5. Use caution not to overload engine. Grey or black smoke is a
sign of overload.
6. Next fifteen hours may be run at 70 - 75% load.
Explanation:
"Breaking in" a new en~ine is basically a seating of the piston rings
to the cylinder walls. This is not accomplished by long per iods of
runnIng idle, nor by early running under full load, nor by varying
loads with intervals of fast acceleration and/or excessive speed.
Idle running may glaze the cylinder walls causing oil consumption and
smoky operation. Excessive speeds and loads may score cylinder walls
with similar results.
As indicated above, use a short warm up at idle and put engine under
moderate load and speed for the first five hours of operationo For
the next fifteen hours, use approximately 70% load. 'rhis kind of
careful operation will result in best results from your engine&
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