4 - 11
ENG
CARBURETOR
2. Inspect:
●
Main jet
1
●
Pilot jet
2
●
Needle jet
3
●
Starter jet
4
●
Main air jet
5
●
Pilot air jet
6
●
Leak jet
7
Damage
→
Replace.
Contamination
→
Clean.
NOTE:
●
Use a petroleum based solvent for cleaning.
Blow out all passages and jets with com-
pressed air.
●
Never use a wire.
Needle valve
1. Inspect:
●
Needle valve
1
●
Valve seat
2
Grooved wear
a
→
Replace.
Dust
b
and
c
→
Clean.
NOTE:
Replace the needle valve and valve seat as a
set.
EC464301
Throttle valve
1. Check:
●
Free movement
Stick
→
Repair or replace.
NOTE:
Insert the throttle valve
1
into the carburetor
body, and check for free movement.
EC464401
Jet needle
1. Inspect:
●
Jet needle
1
Bends/wear
→
Replace.
●
Clip groove
Free play exists/wear
→
Replace.
●
Clip position
Standard clip position:
No.4 Groove
