"James" wrote in message
ink.net...
Merc?

There is a sending unit in the side of the outdrive. Where the outdrive
pivots up and down. One side is the sending unit, the other side is the
trim limit switch. Both commonly have those wires break off and/or get
corroded.


And, they are also difficult to fix. Might be better to learn to trim by
"ear" anyway because different conditions and loads require different trim
settings. With practice the OP will learn to recognize the "sweet spot".
Try slowly trimming out for maximum engine RPM without adjusting the
throttle.

Eisboch