Yamaha XT660X(S) Automobile User Manual


 
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FI
THROTTLE BODY ASSEMBLY
EAS00912
CHECKING THE FUEL INJECTOR
1. Check:
fuel injector
Damage
Replace.
2. Check:
fuel injector resistance
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a. Disconnect the injection wire harness cou-
pler from the fuel injector.
b. Connect the pocket tester (
×
1) to the fuel
injector terminal as shown.
c. Measure the fuel injector resistance.
Out of specification
Replace the fuel
injector.
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Positive tester probe
red/black
1
Negative tester probe
red/blue
2
Fuel injector resistance
12
at 20 °C (68 °F)
R/L R/B
1
2
EAS00913
CHECKING THE THROTTLE BODY
1. Check:
throttle body
Cracks/damage
Replace the throttle
body.
2. Check:
fuel passages
Obstructions
Clean.
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a. Wash the throttle body in a petroleum-
based solvent
CAUTION:
Do not use any caustic carburetor cleaning
solution.
b. Blow out all of the passages with com-
pressed air.
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