Oil leaking from crank case gasket after I replaced it. 😥

[Andrew Stokes]

Just pulled down and rebuilt a non-working 10hp BnS. Runs like a dream now but, there's oil leaking from the crankcase seal...which I replaced. Does that mean the engine is a bit warped? Obviously have to pull it off again, but what am I looking for? Any advice or suggestions greatly appreciated.

 

[StarTech]

Depending on how the oil seal was replaced it could be damaged. First the crankshaft must be clean and free of burrs. Second while installing you got make the lip doesn't get rolled to where the gather spring become dislodged. IF the gather spring becomes dislodged the seal will leak.