Yamaha YFZ450S 2003 Service Manual page 247

a
1
6 - 10
CARBURETOR
2. Adjust:
• throttle position sensor angle
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a. Loosen the throttle position sensor screw
1.
b. Turn the throttle position sensor in direction
a or b until the specified throttle position
sensor output voltage is indicated on the
pocket tester.
c. Connect the pocket tester (20 V DC) to the
throttle position sensor.
Tester positive lead → yellow 3
Tester negative lead → black 2
d. Check the throttle position sensor output
voltage.
Out of specification → Adjust or replace.
Throttle position sensor output
voltage
0.58 ~ 0.78 V (yellow and black)
NOTE:
_
When checking the throttle position sensor, it
must be connected to the throttle position sen-
sor coupler on the wire harness.
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3. Tighten:
• throttle position sensor screw
CARB
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MMM
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