Adjusting The Throttle Position Sensor - Yamaha WR250R Service Manual

EAS27030
ADJUSTING THE THROTTLE POSITION
SENSOR
EWA32D1011
WARNING
Replace the throttle position sensor with a
new one if you have dropped or impacted it.
NOTE:
Before adjusting the throttle position sensor, the
engine idling speed should be properly adjusted.
1. Check:
Throttle position sensor
G
Refer to "CHECKING THE THROTTLE PO-
SITION SENSOR" on page 8-79.
2. Adjust:
Throttle position sensor angle
G
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
a. Connect the throttle position sensor coupler
to the wire harness.
b. Connect the digital circuit tester to the throttle
position sensor.
Positive tester probe
Blue "1"
Negative tester probe
Black/Blue "2"
Digital circuit tester
90890-03174
Model 88 Multimeter with tachom-
eter
YU-A1927
L Y B/L
1
c. Measure the throttle position sensor voltage.
d. Adjust the throttle position sensor angle so
that the voltage is within the specified range.
Throttle position sensor
Output voltage (when the engine
is idling)
0.63–0.73 V
e. After adjusting the throttle position sensor an-
2
THROTTLE BODIES
gle, tighten the throttle position sensor
screws.
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7-7