2010-2012 PRO-RIDE RUSH Switchback RMK Service Manual, Page 74Get this manual
Maintenance Chain Case Oil Level Check
Maintain the oil level at the bottom of the fill port hole1Position the vehicle on flat and level surface2Remove the fill plugVerify the oil level is at the base of the plug hole3Add the recommended oil as needed at the fill plug
Drive Chain Tension Adjustment
1Open the left and right side door panelsRemove the hood2Remove the exhaust silencer3Rotate the driven clutch counter-clockwise to move all of the slack in the chain to the tensioner sideSet the parking brake, or have an assistant hold the brake lever4Loosen the jam nut
FILL PLUG PLENUM JAM NUT
ADJUSTER SCREW