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NOTE:
EC464210
Needle valve
NOTE:
Replace the needle valve and valve seat as a
set.
EC464300
Throttle valve
EC464400
Jet needle
4 - 11
CARBURETOR
2. Inspect:
Main jet 1
Pilot jet 2
Needle jet 3
Starter jet 4
Main air jet 5
Pilot air jet 6
Damage → Replace.
Contamination → Clean.
Use a petroleum based solvent for cleaning.
Blow out all passages and jets with com-
pressed air.
Never use a wire.
1. Inspect:
Needle valve 1
Valve seat 2
Grooved wear a → Replace.
Dust b and c → Clean.
1. Check:
Free movement
Stick → Repair or replace.
Insert the throttle valve 1 into the car-
buretor body, and check for free move-
ment.
1. Inspect:
Jet needle 1
Bends/wear → Replace.
Clip groove
Free play exists/wear → Replace.
Clip position
Standard clip position:
No.4 Groove
ENG
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