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Old 07-17-2013
arf145 arf145 is offline
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Re: Replaced engine mounts now how do I align ?

To play the basic alignment game, first you need a feeler gauge of the appropriate size as stated with your engine. I believe the Yanmar spec is .008 inch, for example. With the output flange disconnected from the shaft flange but pushed together and the engine mounts loose, you check the gap at 12, 3, 6, and 9 o'clock around the mated surfaces. If you have too much space at 12 o'clock, the aft end of the engine needs to drop a tad. Too much space on one side means you have to jostle the engine to close that up.

Simple in concept, but the hard part is that you are frequently trying to push around a several hundred pound weight just a little bit. It can be frustrating.

If you have a drive saver in between the two surfaces it will need to be removed to do this.
Tom K

2000 Beneteau 331
Northern Chesapeake Bay

Ambition is a poor excuse for not having enough sense to be lazy ~ Steven Wright
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