Motor locked up when lower unit is installed

[RaisedByWolves]

I assumed that any reliable machine shop would do just that (as quoted above). My wonderment of post #17 pertained to the lower portion of the splines where the shaft returned to its solid state.

Oh OK, I got you.

I was thinking the main part of the shaft would be smaller than the splined portion as the splines would generally be the weakest point.

 

[racerone]

????----No the very same splines are used on the monster V-6 and V-8 outboards up to 300 HP.----The spline be very strong.-----I believe the OP has solved this issue.

 

[boobie]

If he has it would be nice to let us know.