I was able to remove the big nut on the tiller that allows access to remove
the shift shaft (once the tiller and throttle shaft are out of the way) by
putting a big wrench on the nut, and slapping said wrench with a 2×2 maple
board.
So far I’ve found no more detents other than the spring clip
that engages the three notches, just under the shifter.
I have not tore into the gear case yet though.
The reverse lock cam / ramp system appears to be the main
issue I see so far. When in neutral, the cams are on the verge of
sliding on their ramps, which is suppose to happen when
one shifts to Forward…… cams slide together, releasing the
hooks on the transom mount pin. The reverse lock “hooks”
are under spring pressure, which aids in the unwanted self shifting.
I can see where it would take little vibration for the shift lever
to jump into Forward by itself.
The bottom half of the cam / ramp has a set screw, and a flat
on the shaft. The set screw on this motor was loose, which was
not helping maters.
I’m guessing the shift shaft spline was not oriented correctly
into the gear case, as the shift lever never did engage into
the “forward notch”, which it did, after I dropped the gear case.
VIDEO………
Prepare to be boarded!