I have a 1976 Mercury 850, sometimes if you trim it up too far it gets stuck, you can hear the trim motor run but it will not go down. Checked the fluid and it is fine. How do I lower the motor manually?
Make sure the manual tilt lock isn't jamming the transom bracket. They can rust and just get in the way.
I think I remember my '77 Merc doing that. I think running it up some more, and then quickly down was the workaround.
I doubt the inner seals are the issue. You do not want to open up the trim cylinders unless you really have to. I am not sure the teflon piston seal is still available.
