1986 johnson 25 h.p. slipping?

[jarin12ga]

It runs fine when im going slow.When I open it up, the motor rev's out.And feels like it's slipping.Sounds like a bad hub?Any thoughts?

 

[Vic.S]

Re: 1986 johnson 25 h.p. slipping?

Yes sounds like a spun hub.

Mark a line acrross the end of the prop shaft and the prop. Take it for spin if the marks no longer line up then more or less proved.

 

[jarin12ga]

Re: 1986 johnson 25 h.p. slipping?

When I put the boat in gear,and spin the prop by hand it feels solid.I have another prop.Should I just change it?The hub is inside the prop right?

 

[Vic.S]

Re: 1986 johnson 25 h.p. slipping?

It'll feel Ok by hand. Unless it is very bad, in which case you wont get much drive at low power either, or you have very strong hands.

Yes the hub is in the prop. It can be replaced. If you have another (good) prop try it.

#69 in THIS DIAGRAM

69 0392881 BUSHING ASSY, Prop. (SST) 1 $22.64 USD Available
69 0386638 BUSHING ASSY, Prop (ALUM) 1 $22.83 USD Available

 

[jarin12ga]

Re: 1986 johnson 25 h.p. slipping?

Thank you vic s.I think you are right!The trasmission sounds quite,no metal sounds.If I gradually go up on the throttle,it's fine.I'll change the prop and cross my fingers.The motor has been great,compared to my inboard outoard nightmare!Thanks again vic s.Maybe I can rest now!