Operation Manual

4. Fuel System
4-7
FLOAT CHAMBER
Disassembly
Remove 4 mounting screws and then the float
chamber cover.
Remove the float pin and float valve.
Checking
Check float needle valve and valve seat for drop
difference damage, wear out, dirty or clogged.
Caution
z In case of worn out or dirt, the float valve and
valve seat will not tightly close causing fuel
level to increase and as a result, fuel
flooding. A worn out or dirty float valve must
be replaced with a new a new one.
Remove main jet, fuel needle jet holder, nozzle,
idle jet, air-fuel mixture adjustment screw.
Caution
z Take care not to damage jets and adjust
screw.
z Before removing adjustment screw, turn it all
the way down and note the number of turns.
z Do not turn adjustment screw forcefully to
avoid damaging valve seat face.
Clean jets with cleaning fluid.
Then use compressed air to blow dirt off.
Blow carburetor body passages with compressed
air.
Float
Float pin
Float valve
Drain screw
Main jet
Idle jet
Nozzle
Fuel needle
holder
Air-fuel mixture
adjustment screw
Main jet
Nozzle
Fuel needle holder
Idle jet
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