I have raptor 660R and i have some problem whit my oil level, ill explaine.
I changed my oil last week and I filled the oil right where is suppose to be (full line). I started the engine to be sure the oil level stay on full line.

Yesterday afther a long ride, I was curious to see my oil level and I removed the oil cap (engine off). I was supprise to see the oil level!!!The oil going out from the oil tank just like if I added to mutch oil. That weird. Some one told me about oil vent on the engine to prevent oil pressure into the engine , he said some time when the mud block this vent the pressure going up and the oil tank gettint over.

Another of my friend have the same problem whit is 400ex. So if you have any idea or if you think its the vent ill apreciate ur answer. By the way , where is that vent ?

Thank for help.

Pat

 

Do you remember how much oil you used? The only vent that I am aware of is the crank case vent and it runs up under your seat and hooks into the snorkel on your air box, highly unlikely that this is plugged and building up pressure. You may have overfilled a little bit it is easy to do. I would not check your oil hot though I think it will always show over full when the oil is hot.

 

Could be a great idea to just put the right quantity of oil than only chek the gage.

If he's over again it should be the vent.

Tkx spud

 

I had the same problem. 02 Raptor. Nobody could figure it out even the dealers. Hope you can find somebody to help you. If you do please post it I would like to know what it is. It bothered me so much I traded it in. Sorry, that isn't the help you wanted.