Breaking in an engine

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Franklin

Franklin

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Jul 20, 2005
2,422
Whitby 55 Kemah, Tx
The manual doesn't seem to discuss this so I'll ask here. Why is the recommended way to break in a new Yanmar 3 cylender diesel engine? I know that it's is recommended on new car engines that one doesn't go over 50 mph for the first 250 miles and changing the oil at 250 miles and 750 miles. My guess is that I don't go over 2250 rpms but I don't know for how many hours.
 
B

Big Windy

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Jun 2, 2004
1,077
Several Catalinas C25/C320 USA
New Engine

Call your local Yanmar dealer...or check out a Yanmar forum: http://www.freeboards.net/?mforum=yanmarhelp http://www.yanmarhelp.com/ http://www.yanmarmarine.com/qa/maintenance.php
 
Ctskip

Ctskip

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Sep 21, 2005
732
other 12 wet water
Vary the RPM and load for

the first 5 hours.Don't run at a constant speed. Change the oil/filter. after 2hrs use then again at 5 hrs and again at 10 It will develope a sweet spot by itself. Thats the way I'd do it. Ya can't change the oil too much. Keep it up, Ctskip
 
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