'65 Sportwin 9.5hp prop shaft play

[Huntnfish08]

I've got a 1965 Sportwin 9.5hp.
It jumps out of gear at about half revs or 4-5 mph. At first I thought clutch dog but the prop shaft slides for and aft approximately ⅛ inch. Much more than in my 68 model.
That got me thinking that perhaps I've got a worn bushing, bearing, or seal that's allowing the shaft to slide forward disengaging under load. Holding the shift lever down doesn't stop it. She jumps out and grinds.
Just my thoughts, I'm no expert.
Any idea what I'd need to look for once I pull apart the great case. I'll check the clutch dog of course but with that play I'm leaning towards something else.

Thanks for any ideas,
Adam

 

[F_R]

Possible forward gear thrust bushing, but if it is, you have more issues in there than that.

How about the motor mount bushings? Is the whole motor flopping around loose in the outer shell?

 

[Huntnfish08]

Possible forward gear thrust bushing, but if it is, you have more issues in there than that.

How about the motor mount bushings? Is the whole motor flopping around loose in the outer shell?

The motor mounts are tight. Doesn't move at all. Is that thrust bushing still available?

 

[racerone]

Take it apart for inspection.----Could be a thrust washer missing.

 

[Huntnfish08]

Take it apart for inspection.----Could be a thrust washer missing.

I'll pull it tomorrow.
Bought this engine for $30. Replaced the points and condensers. Rebuilt the carb. Installed new plugs. Runs great and seemed good in the bucket but upon running in the lake I discovered this. Still only into it $80 so I've got some wiggle room on the gearcase to get it tip top.

 

[racerone]

Pull driveshaft out..-----Inspect bearing surface above pinion.----Inspect gearcase bushing above pinion gear.

 

[Crosbyman]

any chance the shift lever is not adjusted properly

 

[Crosbyman]

also check the side shift link (shift rod connector) for proper fit

 

[Huntnfish08]

any chance the shift lever is not adjusted properly

Shift lever is good. Haven't gotten into gear case as of yet.