Thanks for this. I did see that lever (#25 in the diagram) marked with nothing more than "Engage" and "Release". It didn't do anything with respect to keeping the motor down in reverse during the maiden voyage, so I thought its function must relate to something else.
I'll have to take a look...
I recently picked up a 1988 Larson Citation DC-150 that has a Force 50 (by US Marine) of the same vintage. The motor has no trim control. When I put the motor in reverse and give it some throttle, the motor rocks up and the prop comes out of the water. I looked for some kind of manual lockout...
