Yamaha YZ250F(N)/LC Owner's Service Manual page 602

THROTTLE POSITION SENSOR SYSTEM
THROTTLE POSITION SENSOR
REPLACEMENT AND ADJUSTMENT
1. Remove:
Throttle position sensor coupler
Screw (throttle position sensor) 1
Washer 2
Throttle position sensor 3
NOTE:
Loosen the screws (throttle position sensor)
using the T20 bit (tamper resistant fastener
type).
2. Replace:
Throttle position sensor
3. Install:
Throttle position sensor 1
Washer 2
Screw (throttle position sensor) 3
NOTE:
Align the slot a in the throttle position sen-
sor with the projection b on the carburetor.
Temporarily tighten the screws (throttle posi-
tion sensor).
4. Adjust:
Engine idling speed
Refer to
ADJUSTMENT" section in the CHAP-
TER 3.
5. Calculate:
Throttle position sensor coil resistance
at idle speed
Throttle position sensor coil resistance
at idle speed:
Throttle position sensor coil resis-
tance (0.13 ~ 0.15)
<Example>
If the throttle position sensor coil resistance is
5 k , then the throttle position sensor coil
resistance at idle speed is:
5 k (0.13 ~ 0.15) = 650 ~ 750
Refer to "THROTTLE POSITION SEN-
SOR COIL
about the throttle position sensor coil
resistance.
6 - 9
–
ELEC
"ENGINE IDLE SPEED
INSPECTION" section
+