Replacing Crank Seal

[gunslinger45]

I think I need to replace the right side crank seal on my 88 RM250. The bike smokes alot, has tons of spooge and does not seem to running properly even after trying to jet it. Running a 72 main, 52 pilot, needle in 3rd position. The bike has a Keihin PWK carb as opposed to the stock Mikuni. Anyway, my question is wether you can replace the right side seal without splitting the cases. Can you just pull off the clutch cover and the clutch plates and hub and then somehow pull out the seal and replace it? Any thoughts are appreciated. Thanks guys.

Trevor

 

[darringer]

No, you do not have to split the cases. My '87 RM was almost identical to your '88. After removing the clutch and primary gear, screw in a small self-tapping sheet metal screw into the rubber seal and gently pull it out. Unfortunately, this was a common problem with these years. Actually it's pretty easy to replace.