Removal; Inspection - Yamaha RS90GTZ Service Manual

THROTTLE BODY

REMOVAL

1. Extract the fuel in the fuel tank through the
fuel tank cap with a pump.
2. Remove:
• Fuel hose
WARNING
Cover fuel hose connections with a cloth
when disconnecting them. Residual pres-
sure in the fuel lines could cause fuel to
spurt out when removing the hoses.
NOTICE
Be sure to disconnect the fuel hose by
hand.
Do not forcefully disconnect the hose with
tools.
TIP
• To remove the fuel hose from the throttle
body, slide the fuel hose connector cover
on the end of the hose in direction of the
arrow shown, press the two buttons
sides of the connector, and then remove the
hose.
• Before removing the hose, place a few rags in
the area under where it will be removed.

INSPECTION

1. Inspect:
• Injectors
Damage → Replace the defective parts.
2. Inspect:
• Throttle body
Cracks/damage → Replace the throttle
body.
3. Check:
• Fuel passages
Obstructions → Clean.
TIP
• Use a petroleum based solvent for cleaning.
• Blow out all passage with compressed air.
4. Check:
• Throttle body joints
Cracks/damage → Replace the defective
parts.
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on the