Note how the compensator works to reduce drivetrain shocks caused by the jerk on the seat. The spokes try to climb the cam (against the spring) when the wheels slip then grab or when the jerk jerks the throttle on/off. Only a slight film of oil is needed and then not in normal driving and the chain carries up more than enough. I never paid any attention to the quantity specified in the manual but rather filled the case until the chain was just submerged where it passes under the clutch. The first time I ever heard of a compensator wearing was right here. Naturally YMMV.