2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 128Get this manual

2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 128

CARBURATION AND FUEL SYSTEM NOTE: The starter jet is removableUpon disassembly, place the parts in container for safe keeping
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 ORings in caustic cleaning
solutionsDamage may occurDo not use agitator-type 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