Yanmar 2QM15 Rebuild - Page 2 - SailNet Community
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post #11 of 20 Old 01-16-2013 Thread Starter
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Re: Yanmar 2QM15 Rebuild

One sign was that the engine was a little hard to first start when cold (weather in the 60s and below). And within the month before she froze up, I noticed the engine oil was a just a tad bit lower than usual. All understandable in hindsight.

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post #12 of 20 Old 01-16-2013
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Re: Yanmar 2QM15 Rebuild

I just purchased a 2QM15 to replace the Atomic 4 in my boat. I received the Parts List and the Service manual with the engine (1977) To answer Banjo Boy's request for part numbers this is what I have;
Oil Sensor 124060-39451
Coolant Sensor 46150-004530 replaced with 127610-91350 (200 degrees)
Hope this helps
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post #13 of 20 Old 01-16-2013
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Re: Yanmar 2QM15 Rebuild

How hard was it and how do you get the cylinder liners out of the block? Looks like these could get rusted in.
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post #14 of 20 Old 01-16-2013 Thread Starter
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Re: Yanmar 2QM15 Rebuild

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How hard was it and how do you get the cylinder liners out of the block? Looks like these could get rusted in.
Thanks

It was pretty easy removing both cylinder liners. You can buy or easily make cylinder liner extractor. I made mine from a threaded rod and scrap Aluminum.

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Last edited by dreuge; 01-16-2013 at 01:13 PM.
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post #15 of 20 Old 01-16-2013
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Re: Yanmar 2QM15 Rebuild

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It was pretty easy removing both cylinders. You can buy or easily make cylinder extractor. I made mine from a threaded rod and scrap Aluminum.
Are you refering to removing the cylinder or the cylinder liner with this tool?
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post #16 of 20 Old 01-16-2013 Thread Starter
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Re: Yanmar 2QM15 Rebuild

Yes, Cylinder liners.

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post #17 of 20 Old 01-17-2013
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Re: Yanmar 2QM15 Rebuild

If you don't mind me asking, where did you end up buying your Yanmar parts?
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post #18 of 20 Old 01-17-2013 Thread Starter
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Re: Yanmar 2QM15 Rebuild

I called and had them shipped via UPS from Mastry Engine Center.

Mastry Engine Center
Welcome to Mastry Engine Center
Toll Free: 1-800-545-4574

2801 Anvil Street North
St. Petersburg, Florida 33710

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post #19 of 20 Old 01-17-2013
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Re: Yanmar 2QM15 Rebuild

Dreuge,
Where the fuel injectors go into the head, there are several washers, packing, and an o-ring. It looks like you may have removed these to clean the head. Did you install the old or install new? If you took these parts out, was that difficult?
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post #20 of 20 Old 06-15-2015
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Re: Yanmar 2QM15 Rebuild

Hello Dreuge, if you're still in SailNet and particularly if still in NW Florida, I'd love to chat some more about your 2QM15 rebuild. We have that engine in one of the boats in my Sea Scout (BSA) unit and we managed to overheat and seize it.

If you read this, please look us up via our web site Sea Scout Ship 609 - Pensacola, Florida

thanks
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2qm15 , exhaust elbow , mixing elbow , rebuild , yanmar

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