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At the risk of starting an old thread going around again, this month's
issue
of "Seaworthy" (The Boat/US magazine for boats insured with them) has an
article - or at least a response - from Larry Berlin, the diesel guru for
diesels in general and Yanmar specifically.
Larry addresses the cold, unlubricated, start of an engine as sort of
throwing cold water on it to wake it up after a long cold winter.
Essentially he says that the proper procedure for starting the engine for
the first time in the spring is to "pre-lube" the engine. Most of the oil
drains out of the bearings and other moving parts after sitting idle for
long periods
..."Yanmar therefore recommends a "pre-lube" operation, which entails
cranking the engine over at low rpm for 10 seconds while pulling the fuel
stop lever....which will prevent the engine from starting. The slow
cranking action will force oil through the engine and reduce friction
before
allowing it to start..."
Yanmar also recommends "...cranking the engine over twice, pausing 30
seconds between cranks to allow the starter to cool down."
That's as straight from the horses mouth as you can get.
Steve Weinstein
Hydro-Therapy
A 1981 Cherubini 33
Sailing out of Oyster Bay, NY
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