2005 Polaris Sportsman 400/500 Service Manual, Page 125Get this manual
FUEL SYSTEMCARBURETION
CARBURETOR CLEANING
WARNING
Jet Needle
Needle Jet
Protect eyes from contact with cleanerTake appropriate safety measures during these proceduresSafety glasses and chemical resistant gloves are requiredShould you get cleaner in your eyes or if you swallow cleaner, seek medical attention immediatelyCarburetor cleaners can be extremely causticExtended periods of soaking can loosen the adhesive sealer on the passage drill-way plugsDo not soak rubber or plastic components (such as the vacuum slide diaphragm, needle seat screen, or O-Rings in caustic cleaning solutionsIrreparable damage may occurDo not use agitatortype carburetor cleaning equipmentRubber parts must be cleaned with mild detergent and hot water only1Thoroughly clean the carburetor body, jets, and all passages with carburetor cleaner or electrical contact cleaner2If the carburetor is extremely dirty or contaminated with fuel residue and varnish, soak for short periods only in carburetor cleaner, and rinse in hot water3Replace the jets if they have buildup of fuel residue or bacterial growth that cannot be removedEven small amount of residue will reduce the flow characteristics of the jet4Verify all passages and jets are unobstructed by spraying electrical contact cleaner through the passagesCAUTION: Do not use wire or welding tip cleaners as the orifice size may be altered5Use low pressure air to dry carburetor body and all components