Cleaning And Inspecting Carburetor - Arctic Cat DVX 400 2008 Service Manual

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6. Position the spring and primer diaphragm assem-
bly (lip toward the carburetor) onto the carburetor;
then secure the assembly with the primer housing
cover and two screws. Tighten securely.
! CAUTION
It is important to press down on the primer housing
until it contacts the carburetor to make sure the dia-
phragm lip is properly seated in the groove in the
carburetor. If the diaphragm is not properly seated,
leakage will occur.
7. Place the jet needle, spring seat, and spring into
the piston valve; then place the assembly down
into the carburetor.
8. Place the diaphragm cover into position; then
secure with the Phillips-head screws. Tighten
securely.
INSTALLING
1. Connect the gas and vent hoses onto the
carburetor.
2. Connect the choke cable by screwing the choke
cable end onto the carburetor.
3. Place the throttle cable into position and secure by
tightening the outer jam nut.
4. Connect the throttle cable to the actuator arm.
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5. Place the throttle actuator cover into position on
the carburetor making sure the O-ring is properly
positioned; then secure with three screws.
6. Position the carburetor in the air cleaner and intake
pipe boots; then secure with the clamps.
7. Connect the hose at the fuel valve connection.
8. Secure the air-intake snorkel.
9. Install the seat and make sure it locks in position.
Cleaning and Inspecting
Carburetor
NOTE: Whenever a part is worn excessively,
cracked, or damaged in any way, replacement is
necessary.
! WARNING
When drying components with compressed air,
always wear safety glasses.
! CAUTION
DO NOT place any non-metallic components in
parts-cleaning solvent because damage or deterio-
ration will result.
1. Place all metallic components in a wire basket and
submerge in carburetor cleaner.
2. Soak for 30 minutes; then rinse with fresh
parts-cleaning solvent.
3. Wash all non-metallic components with soap and
water. Rinse thoroughly.
4. Dry all components with compressed air only
making sure all holes, orifices, and channels are
unobstructed.
5. Inspect the carburetor body for cracks, nicks,
stripped threads, and any other imperfections in
the casting.
6. Inspect the piston valve/diaphragm for cracks,
imperfections in the casting, or cracks and tears in
the rubber.
7. Inspect float for damage.
8. Inspect gasket and O-rings for distortion, tears, or
noticeable damage.
9. Inspect tips of the jet needle, pilot screw, and the
needle valve for wear, damage, or distortion.
10. Inspect all jets for obstructions or damage.
NOTE: If the pilot jet is obstructed, the mixture will
be extremely lean at idle and part-throttle operation.
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