I have an oil leak by the sproket somewhere and it's making a big mess. The oil is ending up on the chain and is getting thrown all over. What oil seals are by the sprocket that I should look into changing? It's not a huge oil leak but after a week of riding my bike looks like it does in the pics.

http://img519.imageshack.us/img519/1083/img005xr2.jpg

http://img519.imageshack.us/img519/6599/img004za4.jpg

 

well if you ride with the front sprocket cover on and its slinging it when you ride, theres a seal behind the front sprocket. I would start looking there first. Kinda hard to tell from the pics though.

 

if its the sprocket seal....thats bad news right there. The seal is about $3..but its on the INSIDE..you have to split the case to replace it...at least thats how it is with the f3's and i believe its the same with the f4's...
it kinda looks like its coming from outside the front sprocket housing though..but ireally cant tell

 

I guess i'll clean it up and throw the front cover on and see what happens...

 

yeah just pressure wash the crap out of it and take caution and always check it so you can find the leak, then go from there.