Arctic Cat ATV 250 Utility 2009 Service Manual page 72

NOTE: Note the locations of the jets, pilot screw,
and holder for disassembling procedures.
6. Secure the needle jet holder with a wrench; then
remove the main jet.
7. Remove the needle jet holder; then remove the
needle jet, slow jet, and the starter jet.
8. Remove the pilot screw. Account for a spring,
washer, and an O-ring.
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CC761A
KC0030A
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CLEANING AND INSPECTING
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 deteriora-
tion will result.
1. Place all metallic components in a wire basket and
submerge in carburetor cleaner.
2. Soak for 30 minutes; then rinse with clean, hot
water.
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 imperfections in the casting.
6. Inspect the vacuum piston 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 jet for wear, damage, or distortion.
10. Inspect the slow jet and main jet for obstructions
or damage.
NOTE: If the slow jet is obstructed, the mixture will
be extremely lean at idle and part-throttle operation.
11. Inspect the float valve for wear or damage.
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