4-4
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 float for damage.
7. Inspect gasket and O-rings for distortion, tears, or
noticeable damage.
8. Inspect tips of the jet needle, pilot screw, and the
needle jet for wear, damage, or distortion.
9. 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.
10. Inspect the float valve for wear or damage.
11. Inspect the carburetor mounting flange for damage
and tightness.
ASSEMBLING
1. Install the pilot screw, spring, washer, and O-ring.
TR209A
NOTE: Turn the pilot screw clockwise until it is
lightly seated; then turn it counterclockwise the rec-
ommended number of turns as an initial setting.
NOTE: Note the locations of the jets and holder
during assembling procedures.
TR207A
2. Install the slow jet. Tighten securely.
3. 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.
4. Place the float assembly (with float valve) into posi-
tion and secure to the carburetor with the float pin.
TR205A
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 14.8 mm.
TR220
5. Place the float chamber into position making sure
the O-ring is properly positioned; then secure with
the Phillips-head screws.
CAUTION
DO NOT place any non-metallic components in
parts-cleaning solvent because damage or deteriora-
tion will result.
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