Seller notes

K&S Carburetor Air Cut Off Valve Set Yamaha YFM600F Grizzly 600 4x4 1998-2000 Product Details Direct OE-style replacement carburetor air cut off valve kit from K&S Technologies. Located on the side of the carburetor, the air cut off valve prevents a lean fuel mixture when decelerating and consequently - backfiring. It works by temporarily closing the pilot jet airway to provide a richer mix as the throttle closes. If your machine has a tendency to backfire, this may be one solution for solving y...

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