Arctic Cat 400 Service Manual page 371

10. Unscrew and remove the idle speed adjuster
assembly. Account for the spring and washer.
ASSEMBLING
1. Screw the idle speed adjuster into the carburetor
making sure the washer and spring are properly
positioned.
2. Install the pilot screw, spring, washer, and
O-ring.
NOTE: Turn the pilot screw clockwise until it is
lightly seated; then turn it counterclockwise the
recommended number of turns as an initial set-
ting.
NOTE: Note the locations of the jets and holder
during assembling procedures.
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3. Install the slow jet. Tighten securely.
4. Install the main jet into the needle jet holder and
tighten securely; then install the needle jet
holder assembly into the carburetor and tighten
securely.
5. Place the float assembly (with float needle
valve) into position and secure to the carburetor
with the float pin.
NOTE: Check float arm height by placing the car-
buretor on its side w/float contacting the needle;
then measure with a caliper the height when the
float arm is in contact with the needle valve. Float
arm height should be 17 mm (0.7 in.).
6. Place the float chamber into position making
sure the O-ring is properly positioned; then
secure with the Phillips-head screws.
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