I am assuming the rear mounts are fixed for the centerline of the crank to the transom unit. Is this correct or can this be adjusted? Any ideas appreciated...
Ayuh,.... Yer correct,.... There's fiber washers, coiled washer inside it, under the mount, 'n the spacer, 'n washer above,....
The pressed-in rubber mounts in the flywheel cover can also fail, 'n need replacin', though not an often thing,.....
It`s all in here
http://www.boatfix.com/merc/Install/gas/86017211.pdf
Andy J - any updates?