Reply To: Folding Lightwin, seized upper driveshaft splines

[Don]

Yeah, I remember my buddy’s 69 4hp, it chewed up the splines ever few years….Was too young back then to realize the importance of the oring and moly lube… In this case, the splines didn’t spin out, they are seized. I guess I am wondering what prompted whoever it was to attempt to pull the powerhead only to discover the seized splines, perhaps there was a cooling issue.

I will have to look more closely at the “coupler”, perhaps someone has a shop manual for a folder and can post the instructions….