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Go Back   SailNet Community > On Board > Gear & Maintenance > Yanmar 2QM15 Rebuild
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Thread: Yanmar 2QM15 Rebuild Reply to Thread
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Topic Review (Newest First)
01-17-2013 09:27 PM
casey1999
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?
Regards
01-17-2013 06:19 PM
dreuge
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
01-17-2013 04:52 PM
mstiles
Re: Yanmar 2QM15 Rebuild

If you don't mind me asking, where did you end up buying your Yanmar parts?
01-16-2013 02:17 PM
dreuge
Re: Yanmar 2QM15 Rebuild

Yes, Cylinder liners.
01-16-2013 01:54 PM
casey1999
Re: Yanmar 2QM15 Rebuild

Quote:
Originally Posted by dreuge View Post
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?
Regards
01-16-2013 01:45 PM
dreuge
Re: Yanmar 2QM15 Rebuild

Quote:
Originally Posted by casey1999 View Post
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.
01-16-2013 01:20 PM
casey1999
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.
Thanks
01-16-2013 10:33 AM
weephee
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
01-16-2013 09:13 AM
dreuge
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.
01-15-2013 02:48 PM
casey1999
Re: Yanmar 2QM15 Rebuild

Dreuge,
Thanks for great post. I have a similar set up with a 30 year old Yanmar 3GMD and will be looking at having to do the same in the not to distant furture I am sure.

Did you notice any changes in exhaust or operation before the engine siezed up?

I get some white exhaust (steam?) when I run my direct sea water cooled engine and am wondering if it is sea water entering the cylinder through a bad head gasket. Thinking maybe somtime soon I should pull the engine and spilt the head and block, clean all the cooling passages, replace head gasket.

Also, I have been flushing with fresh water after use, maybe buy a little more time out of her.

Regards
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