oil crossing over

[sadinkins]

i have oil crossing over from transmission side to the engine. i filled both sides to the right levels and ride for a while and notice engine side is to full so i check transmission side and it is almost 1/2 quart low. what seal is bad?

[audioworks04]

Possibly crank seals, but you wont really know until you crack it open.

[thibs101]

had the same probleme it was the crank seal for me. the seal wasnt put properly from factorie.... 10 buck for a seal only had to take clutch side cover off

[fandl450r]

It could be two things:

1) Like others have said it's a bad crank seal.
2) The other scenario is if this was a Electric Start model that was converted to a kickstart, there is a bolt hole that connects the transmission side and motor side, which needs to have the bolt put back in or oil can transfer.

[sadinkins]

Where is this bolt we just replaced cases and they did come from an electric start

[sadinkins]

Any one know where this bolt is? Really want to ride this weekend

[blacknblue#2]

Its one of the bolt holes that hold in the 2 what i call "bendinx gears" its hard to explain but easy to see i guess. There is 2 gears right off of the starter. They are both held in place by a casted piece of metal that bolts on with 3 bolts. I just bolted the casted piece of metal back onto mine and it solved the problem.. i hope i didnt confuse ya just trying to make sense of it haha

[OTMTRX]

This one.. don't put too long of a bolt in as it will touch the inner.. I put a washer or two on.. loctited mine too.http://i727.photobucket.com/albums/ww274/stewart6111/TRX450ER/Useful%20pics/Picture209m.jpg