1977 Johnson 35HP slipping out of gear

[Jeff74]

My engine is making the thump at WOT. It is a 1977 35HP. From the looks of things in my Seloc manual, this looks like an expensive problem. Do they even make replacement gears and clutches for these older engines anymore? Anyone had to deal with a problem like this before?

Thanks for your help-Jeff.

 

[F_R]

Re: 1977 Johnson 35HP slipping out of gear

A fairly common problem. You will need a new clutch dog and forward gear. And new seals. About $250 for the parts. Yes, so far they are available.

If you don't already know, the key to minimizing this problem from happening again is to not be gentle with it when shifting. You should always shift into gear with a quick decisive snap action. "Easing" it into gear is death to the parts.

 

[jimmyz1]

Re: 1977 Johnson 35HP slipping out of gear

Had the same problem with a 1970 johnson. Thought the motor was going to rip the transom off. Had it fixed did not do it myself. I did find a nice web site showing all the lower unit parts and the dog clutch and how it all works.

http://www.duckworksmagazine.com/06/columns/max/index1.htm

Good luck

 

[Jeff74]

Re: 1977 Johnson 35HP slipping out of gear

Thanks to both of you for your help. I guess I need to track down the parts now. -Jeff.