On the right hand side of the engine, just inboard of your brake pedal, you will see a little window. There is a slotted screw attached to a little wiper on the inside. Rotate this screw a couple of times, and the wiper should clean the spooge from the inside of the window. Now with the bike on the center stand, as level ground as possible, fill oil (just above window to the left you will find the fill port) until the oil line is visible at the halfway of the window. This oil is for engine and transmission. Do not forget to check the gear oil in the bevel drive on the rear wheel. This is simply filled to the top of the port. Bikermike Bikemaker.