250-500cc Wr300 sproket seal leaking

Ive done about 50hrs to date and the rear sproket seal is seaping. Not an obvious drip but enough to spread around the excternal area gearbox after an hours ride.

Is this the sign of something wearing on the inside or just a wear n tear item? apparently its pretty cheap and easy to replace. I will have our local machine shop CNC one up next week.
Will get the pics for you to chek out as they can make any seal we need.

Cheers
S

im guessing your talking about the counter shaft seal?

if so yeah thats a normal wear and tear part. they fail just like any other seal can fail.

Hi Sandgroper, There is a spacer behind the countershaft sprocket that has a recess on the inside, there is an o-ring that goes in the recess, I would replace the o-ring first. It is easy to get to and I have seen it be the cause of these leaks. Mike.

Thaks for the heads up Mike. Will check it out. Might be easier to find an o-ring than making a seal from scratch
Cheers