I've got a pair of 110cc quads that both run but both have the same problem. It would seem the previous owner did not routinely check fasteners for tightness and the cylinder bolts worked loose, blowing out the cylinder base gasket. Soon as they are started oil dumps out the blown gasket but otherwise the sound good. Is it hard to get these parts for a ODES 110cc motor? I have some really good gasket material on hand but its much thicker so don't know if that would cause problems cutting my own. It looks like the existing gasket is metal? Maybe just cut one out of a pop can? I was looking for a good exploded view of the motor or maybe a shop manual or write-up or this procedure.

 

parts are easy to find for those things.. hit ebay

 

Turns out it was the headgasket blown, fixed several problems on the first but still need to dive into the blue one.

 

I had some fun with the other problem I found. Made a quick temp fix that has proved to hold up well so far.