Coosa River
Seaman
- Joined
- Nov 5, 2009
- Messages
- 52
I have a 1971 25hp Evinrude (25103S). I was getting bypass oil up on the points, so I replaced that top seal. It held for a while, but now is leaking by again. I'm thinking that there is possible bearing problems, or the O ring with the top bearing is shot. It appears that the crankshaft is tight enough....and the motor will run, but doesn't idle down very well.....will die after a few seconds back at idle speed.
Anyway, I'm thinking about breaking the crank case in half and taking a look.....possibly replacing the bearings / seals / O rings. I'm looking on this parts list/view.....and I'm not seeing a gasket where the two halves of the block comes together. Is there not one, and do you use some type of other sealer if there ain't.
Parts View ... http://www.lmmarine.net/pages/parts/viewbybrand/74/1424/30342/709/default.aspx
Thanks for the advice.....and possible comments about my reoccurring oil leak from that top seal
Coosa River
Anyway, I'm thinking about breaking the crank case in half and taking a look.....possibly replacing the bearings / seals / O rings. I'm looking on this parts list/view.....and I'm not seeing a gasket where the two halves of the block comes together. Is there not one, and do you use some type of other sealer if there ain't.
Parts View ... http://www.lmmarine.net/pages/parts/viewbybrand/74/1424/30342/709/default.aspx
Thanks for the advice.....and possible comments about my reoccurring oil leak from that top seal
Coosa River