[C320-list] Engine / shaft alignment

[Scott Thompson]

Surprise now has a Gori 2 blade folding prop to replace the 3 blade 
fixed.  So far I'm satisfied, except that there is definitely quite a 
bit more vibration under power than before.  Today I tried to tackle 
this by doing a shaft alignment.  This is a job I've ignored since 
owning the boat and have been rather nervous about that situation.  When 
I unbolted the flanges I found that the engine flange did not line up 
well with the shaft, and was a bit higher.  I was able to get the 
alignment much better in the fore-aft plane using the adjustment advice 
in my owners manual, but was left with somewhat excessive side to side 
misalignment.  To be precise, the two flanges have good axial alignment 
and are even top to bottom, but there is a bit of a gap (about .014 
inches by my feeler gauge on the starboard side.  I can't figure out how 
to tune this out.  It would seem to require moving the front of the 
engine slightly to starboard, but I don't see any way to adjust the 
engine mounts laterally.  How is this supposed to be done?  I have the 
Yanmar 3GM30F, 1999 model.

Scott Thompson
Surprise, 653