All Balls Racing – Carburetor Rebuild Kits - Polaris, including carburetor rebuild kits for the 1993 Polaris 350L 2x4, 94-95 400L 2x4, 89-92 Big Boss 250 4x6, 11-14 Hawkeye 400 HO 2x4, 2006 550 Classic, 1996 500 Carb SKS, 1992 440 and 1997 600 XC LC/3. Each kit gathers the parts that actually wear inside a carb: needle and seat, float bowl and body gaskets, o-rings, jets where applicable and the small springs and clips that get lost on the bench. Ethanol fuel and long storage are what kill these carbs. Varnish glazes the needle seat so the bowl overflows, gaskets shrink until the machine leaks and runs lean, and a stuck float turns into a hard-starting, bog-off-idle quad or sled. A full rebuild brings back crisp throttle response, a clean idle and correct fuel level instead of endless mixture-screw guessing. Doing the whole carburetor rebuild kit at once also stops the repeat teardown that comes from replacing one gasket. Set float height on the bench and it starts cold without cranking. Polaris used several carb variants per model year, so send us your year and model and we will confirm the correct kit before you order.