2.33
MAINTENANCE
2
9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
Pilot Screw Adjustment
1. Start engine and warm it up to operating temperature
(about 10 minutes).
2. Turn pilot screw in (clockwise) until lightly seated.
Turn screw out the specified number of turns. NOTE:
Do not tighten the pilot screw forcefully against the
seat or the screw and/or seat will be permanently
damaged.
3. Connect an accurate tachometer that will read in
increments of + or - 50 RPM such as the PET
2100DX (PN 8712100DX) or the PET 2500 (PN
8712500).
Pilot Screw Location
Brass Plug Installed
Brass Plug Removed
Pilot screws are calibrated at the factory. Each
carburetor has a slightly different pilot screw
setting. The specifications below are the “base”
recommended setting, and may require
additional tuning to achieve the desired results.
_______________________
Pilot Screw Adjustment:
Sportsman 500 - 2 Turns Out
Sportsman 400 - 2.75 Turns Out
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