ytm 200 engine oil in differential???!?

[Charloz24]

Hi everyone, i have a ytm 200 1983 for a couple of years. Rebuilt it this summer with a wiseco piston, and put a DG exhaust on it. It is sooo preppy now... But now I have a problem. The engine oil goes in the differential.

I cheked parts diagram and dont see what could be the bad seal doing that.

Did you ever had this problem or do you know what could be broken...

Thanks for all your advices, I really want to repair this because its not fun to drain the diff before each ride and putting engine oil in it like if it was smoking lolll..

Sorry for my english I speak french.. :rolleyes:

Thanks, Charles

[WIkid500]

You mean the engine oil is leaking into the rear diff and emptying out the engine? I thought the 83's were chain drive. Mine is. Didn't know they made them shaft in 83. Anyhow if it's a seal leaking between the motor and the diff, meaning it's running down the drive shaft tube I would change the seal that's leaking coming out if the engine case. .