1983 90hp mercury tilt trim button

[Exotic4x4]

Greetings, I purchased a new to me boat to restore,1984 Glastron ssv167. I got the floor and stringers cut out and was going to set the engine down to remove the engine to inspect the transom. Here’s my problem. The engine went down just fine with the control button on the throttle handle I went to pick the engine up with the up botton and nothing happened. I then noticed a trailer button I pushed that and the motor lifted. I went back to the dual ram pump and inspected the connections everything appeared to be tight. (Could use a cleaning) I took a screw driver and went from the hot side to the cold side of the solenoid and it lifted. Could this be the rocker switch in the throttle handle? Being the solenoid is functioning with the trailer switch? Can anyone point me in a direction to trouble shoot this? This is my first mercury motor I’ve always had Johnson evinrudes so this is new territory for me. Any help would be appreciated

 

[Exotic4x4]

 

[Exotic4x4]

 

[Chris1956]

That motor has a trim limit switch located on the starboard trim cylinder. They often break and are NLA. I recommend you jumper the bullet connectors, after you disconnect the trim limit switch from the harness.

 

[jimmbo]

The up circuit on the toggle switch has to go through a trim limit switch. The Limit Switch is utilized to prevent trimming the engine out so far that the steering yoke no longer has any side support from the transom bracket. The can lead to loss of control, damage to the engine, and the potential for the engine to break off at the tilt pivot and join the passengers in the boat. A misadjusted limit can result in the toggle not doing anything. The dangerous thing if you bypass the limit, or use the trailer button to trim you are inviting the forementioned problem to happen

 

[Chris1956]

Jimmbo is correct. You should test it. Run the boat with a normal load. Trim up until she starts to ventilate. Stop the engine and see how high the trim is. Usually boats will ventilate before the trim is above the side brackets. If so, you cannot overtrim, and have any power.