Quadboss 07-09 Yamaha Yfm250 Big Bear Air Cut-off Valve Kit

Improperly functioning air cut-off valves can stick open or closed, causing poor running conditions and popping during deceleration. Air Cut-Off Valve Kit includes O-rings, diaphragm, spring and screws necessary to rebuild the air cut-off valve circuit. Complete rebuild kit with O-rings, diaphragm, spring, and screws to restore carburetor air cut-off function Multi-carb models include components for all carbs; direct OEM replacement for reliable performance Fixes sticking valves causing poor idl