Polaris 2001 High-Performance Snowmobile Service Manual (PN 9916690), Page 134Get this manual
CARBURETION Fuel Delivery SystemTypical
The fuel system contains many components which directly affect fuel mixture and driveabilityWhen performing diagnosis or carburetor maintenance, the entire fuel delivery system should be inspectedThe illustration below shows parts of the system requiring periodic maintenance to ensure there is no fuel or air leaks presentFuel filters should be replaced at least once per seasonMore often if any contamination is suspectedFuel lines should be replaced every other seasonMore often if they become brittle or swollenFittings should be inspected for cracks or leaksTest run and check the fuel system for leaks any time parts are replacedVerify that all lines are routed correctly and away from any moving partsVent Lines Red Fuel Line Water Carb Mounts Vent Line Violet Fuel Line Traps Fuel Fuel Lines Pump Cylinder Base Gasket