Checking The Carburetor Joint And Intake Manifold - Yamaha RAPTOR YFM125RA Service Manual

9. Check:
• Jet needle "1"
Bends/wear/damage → Replace.
• Clip groove
Free play/wear → Replace.
• Clip position (AUS, NZL)
Standard clip position
No. 2 groove (AUS, NZL)
10. Check:
• Main jet "1"
• Pilot jet "2"
• Pilot screw "3" (AUS, NZL)
• Needle jet "4"
• Needle jet holder "5"
• Starter jet "6"
• Coasting enricher jet (P. A. J. 2) "7"
• Bends/damage/wear → Replace.
Obstruction → Clean.
Blow out the jets with compressed air.
11. Check:
• Piston valve movement
Insert the piston valve into the carburetor
body and move it up and down.
Tightness → Replace the piston valve.
• Throttle valve movement
Sticks → Replace the carburetor.
12. Check:
• Starter plunger "1"
• Starter plunger spring "2"
Bends/cracks/damage → Replace.
13. Check:
• Air vent hose joint
Cracks/damage → Replace.
14. Check:
• Air vent hoses
• Fuel hose
• Drain hose
Cracks/damage/wear → Replace.
Obstruction → Clean.
Blow out the hoses with compressed air.
EAS20990
CHECKING THE CARBURETOR JOINT AND
INTAKE MANIFOLD
1. Check:
• Carburetor joint "1"
• Intake manifold "2"
Cracks/damage → Replace.
6-7
CARBURETOR