06-19-2012, 06:06 PM
I have a 2001 90 hp Johnson recently purchased. The trim and tilt was drifting down when I got the boat. Did not have the proper wrenches to pull the pistons and replace the seals so I took it to a hydraulic shop. Found no problems with the seal or the ball checks in the main piston but replaced all the seals anyway. Trim worked ok for a couple of trips then started drifting again. Call around to several shops got several different answers. Ended up replacing the valve body assembly. Bleed the air and took the boat out over the weekend. Trim held all day saturday while running. Took it out of the water and raised the motor for trailering and noticed it drifting again. Got home and raised the stop and the motor will drift all the way down. Anyone with any suggestions, or know where I can find a factory service manual that goes into the working details for a Fast Track Trim and Tilt.