How to check oil on a Suzuki RM85?
On the right side of the engine (clutch cover) is an “oil level check bolt” It has a sealing washer on it. Hold the bike straight up and down (as if you were sitting on it). Remove the “oil level check bolt” (put a drain pan under it so you don’t get your floor dirty). Slowly add oil, until it starts to drain out of the bolt hole. When it stops draining, the oil is at the correct level – install the bolt & washer. Start and run the bike for a couple of minutes. Turn it off for a couple of minutes to let any residual oil drain back down to the bottom of the crankcase. Check the oil level again. Add oil till it starts to drain – wait till it stops draining – install the bolt. http://www.powersportspro.