Fuel Delivery System - Typical - Polaris 2003 Pro X Service Manual

CARBURETION

Fuel Delivery System - Typical

The fuel system contains many components which directly affect fuel mixture and driveability. When performing
diagnosis or carburetor maintenance, the entire fuel delivery system should be inspected. The illustration below
shows parts of the system requiring periodic maintenance to ensure there is no fuel or air leaks present.
Fuel filters should be replaced at least once per season. More often if any contamination is suspected.
Fuel lines should be replaced every other season. More often if they become brittle or swollen. Fittings should
be inspected for cracks or leaks. Do not use pliers or other tools that may damage fuel lines when installing or
removing fuel lines.
Test run and check the fuel system for leaks any time parts are replaced. Verify that all lines are routed correctly
and away from any moving parts.
Violet Fuel Line
Weighted Pickup and Line
(Fuel filter on some models)
NOTE: Some models use fuel filters are located inside the fuel tank. To inspect/replace filter:
S Remove fuel cap.
S Using a long clean wire, bend into a fish hook shape. Pull the fuel line that is inside of the tank up through
the filler hole.
S
Inspect filter on end of fuel pick up line. Replace if worn or clogged.
Red fuel line is the exterior line for outside the tank. The violet line is the interior line for inside the fuel tank. They
cannot be interchanged!
NOTE: The violet line used inside the tank will fade and turn clear after a relatively short time. This does
not affect the function or durability of the line.
When replacing fuel line, be sure to use the correct color line for inside or outside the fuel tank. Also, be very
careful not to bend fuel line to a point of kinking it. If it becomes kinked, it must be replaced. Always inspect fuel
lines when replacing, or if carbs, carb racks, or fuel pumps are removed from chassis.
3.8
Red Fuel Line
Vent Line
Fuel
Pump
Fuel
Fuel
Filter
Line
Water
Traps
Fuel
Lines
Impulse
Line
Crank
Seal
Vent Lines
Carb Mounts
Cylinder
Base
Gasket
Crank
Seal
Check
Valves Impulse Fitting
at Crankcase