Re: how to remove the shim Tilt manual release valve 1992 merc,60 HP
don't push your luck trying to get every last week from your old trim motor. Most water intrusion and system damages are caused by water getting into system via motor. as soon as is starts being noisy or acting up - replace it.
for storage, allow engine to rest on tilt stop or blocks and loosen the mrv 3 turns. if the system ever does get water into it then get a ram seal kit, rebuild the cylinder, and flush the system. otherwise, just enjoy your boat.
that should be enough.