Help manually lowering the motor

[jamesbalog]

I have a 1981 merc 200hp. The trim/tilt relay must have went bad. The motor will trim up but nothing happens when I try to lower it. Question is how do I manually drop the motor to the vertical position? I don't see a screw on the right side of the bracket like newer motors have.

It will drop below freezing tonight so any help would be greatly appreciated