Service manual

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CARB
CARBURETOR
4. Check:
• throttle valve 1
• throttle valve plate 2
Scratches/wear/damage → Replace.
2
1
5. Check:
• accelerator pump diaphragm 1
• pilot jet diaphragm 2
• spring 3
3
3
1
2
6. Check:
• jet needle 1
Bends/wear/damage → Replace.
• clip groove
Free play/wear → Replace.
• clip position
Standard clip position
No.4 groove
7. Check:
• main jet 1
• pilot jet 2
• needle jet 3
• starter jet 4
• pilot air jet 5
• accelerator jet 6
Bends/wear/damage → Replace.
Blockage → Blow out the jets with com-
pressed air.
8. Check:
• throttle valve movement 1
Sticks → Replace the throttle valve guide
and the throttle valve.
Insert the throttle valve into the carburetor
body, and check for free movement.
1