Carburetor Assembly - Polaris Sportsman 400 Service Manual

FUEL SYSTEM/CARBURETION

CARBURETOR ASSEMBLY

1. Inspect the diaphragm (A) for holes,
deterioration, or damage.
diaphragm is pliable but not swollen. The
diaphragm should fit properly in the carburetor
body. Replace diaphragm assembly if
diaphragm is damaged.
2. Replace parts in proper order. The spring seat
washer (B) is stepped and must be placed on
TOP of "E" Clip (C). Spacer washer (D) must
be installed below the E-Clip. Refer to parts
manual for more information.
3. Be sure the tab (E) on outer edge of
diaphragm is positioned properly in the
carburetor body.
4. Install the pilot mixture screw, spring, washer, and
O-ring as an assembly. Lubricate the O-Ring with oil or
light grease before installation. CAUTION: Do not
damage the O-ring during installation. Turn the screw
in until it lightly contacts the seat.
specified number of turns. NOTE: The final pilot (idle)
mixture must be adjusted with the engine running.
Refer to Page 2.14.
Pilot Mixture Screw Base Setting
(Turns Out)
Refer to General / Specifications
Chapter 1
4.14
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Make sure the
Back out the
B
D
E
Pilot Screw
C
A