Name:   CAT BOAT - Subject:   Mercruiser.. suggestions please Date:   6/10/2015 9:30:10 AM

As someone else stated previously, its more than likely a bad trim solenoid.  There are two, mounted on the trim pump.  One has a Green wire, and the other has a Blue wire.  Choose the one with the Blue wire, and make a connection (with a screwdriver or similar) to the adjacent threaded post and the trim motor should trim "up".  If you get confused, just remember Green grass down, Blue sky up.  For the green and blue wire.  I'd rather explain this on the phone so that you get it right and I can explain exactly where this stuff is.  You are welcome to call me.

Steve
Cathouse Marine, LLC
334-358-2838