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Old 04-11-2013
Rusty123 Rusty123 is offline
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Re: Yanmar 2QM15: How can I keep it running forever?

Factory recommended maintenance schedule is shown on page 14-1 of this link:

http://j30.us/files/2qm15_servicemanual.pdf

Valve clearance adjustment is recommended at 300 hour intervals, but valve lapping, bearing inspections, and some other relatively intrusive work is recommended at 1,000 hour intervals.

I'm with you on not tearing apart an operating engine, but on the other hand, there must be some valid reason that Yanmar recommends the maintenance.
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