Yamaha XN125 2000 Service Manual page 160

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CARBURETOR
EAS00485
CHECKING THE CARBURETOR
1. Check:
• carburetor body
• float chamber
• jet housing
2. Check:
• fuel passages
322006
a. Wash the carburetor in a petroleum-based
b. Blow out all of the passages and jets with
3. Check:
• float chamber body
4. Check:
• float chamber rubber gasket
5. Check:
• float
6. Check:
• needle valve
• needle valve seat
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7. Check:
• o-ring
8. Check:
• piston valve
• Piston valve diaphragm
6-3
Cracks/damage → Replace.
Obstruction → Clean.
solvent. Do not use any caustic carburetor
cleaning solution.
compressed air.
Dirt → Clean.
Cracks/damage/wear → Replace.
Damage → Replace.
Damage/obstruction/wear → Replace the
needle valve, needle valve seat and O-ring as
a set.
Damage/wear → Replace the needle valve,
needle valve seat and o-ring as a set.
Damage/scratches/wear → Replace.
Cracks/Tears → Replace.
CARB