[tbird88]

ive noticed when i come back in from riding the airbox drain tube is full of engine oil not air cleaner oil i have never stood quad on rear bumper is the engine oil too full?

 

[CharlieZRX]

Here is how the Manual tell you to check oil and check the crankcase oil level. Hope this works.

 

[EAHILLEN]

A friend of mine who went to MMI and used to work in a shop says it could be to much oil and over reving. 1st thing he would try is change oil/filter and be sure to take the crank case bolt out also, making sure you completely drain the old oil before putting new in. 1.9 quarts is what the dealership book says for oil.