Polaris 2004-2005 Sportsman 6x6, Service Manual

Page: 36 / 289

MAINTENANCE
2.16
PILOT SCREW
The pilot system supplies fuel during engine operation
with the throttle valve closed or slightly opened. The
fuel/air mixture is metered by pilot screw and
discharged into the main bore through the pilot outlet.
CAUTION:
The pilot screw is calibrated at the factory to meet EPA / CARB
regulations for air quality standards and is sealed with a brass
plug to prevent tampering. Removal of the tamper proof plug
is not permitted. For service purposes, cleaning of the pilot
circuit can be done only by a certified repair shop to ensure air
quality standards are not exceeded.
Pilot Screw location
Brass Plug Installed
Brass Plug Removed
PILOT SCREW ADJUSTMENT
Pilot Screw
FRONT
(Engine)
Pilot Screw
View -- Right Cover Panel Removed
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.
Pilot Screw Adjustment:
Sportsman 6x6 500 -- 2 Turns Out
The pilot screw is set at the factory.
Each carburetor will have a slightly differ-
ent pilot screw setting, the adjustments
below are the recommended settings, the
settings may differ from these recommen-
dations.
3. Connect an accurate tachometer that will read in
increments of + or -- 50 RPM such as the PET
2100DX ( PN 8712100 DX) or the PET 2500 ( PN
8712500 ).
4. Set idle speed to 1200 RPM. Always check
throttle cable freeplay after adjusting idle speed
and adjust if necessary.