Assembling The Carburetor - Yamaha YJ50RAP Service Manual

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CARBURETOR
7. Check:
• throttle valve 1
Damage/scratches/wear→ Replace.
8. Check:
• jet needle kit 1
• needle jet 2
• main jet 3
• pilot jet 4
• pilot air screw assembly 5
Bends/damage/wear → Replace.
Obstruction → Clean.
Blow out the jets with compressed air.
9. Check:
• throttle valve movement
Insert the throttle valve into the carburetor
body and move it up and down.
Tightness → Replace the piston valve.
10.Check:
• vacuum hose
• fuel hose
Cracks/damage/wear → Replace.
Obstruction → Clean.
Blow out the hoses with compressed air.
EAS00487

ASSEMBLING THE CARBURETOR

NOTE:
Before assembling the carburetor, make sure
to turn out the pilot air screw the same number
of times, as noted before disassembly, from
the seated position to the set position.
CAUTION:
@
• Before assembling the carburetor, wash
all of the parts in a petroleum-based sol-
vent.
• Always use a new gasket.
1. Install:
• needle jet 1
• main jet 2
• pilot jet 3
CARB