2003 YAMAHA YZ250F ad blue

6 - 11
–+ELEC
9. Tighten:
Screw (throttle position sensor) 1
NOTE:
Tighten the screws (throttle position sensor)
using the T25 bit.
1
10. Stop the engine.
THROTTLE POSITION SENSOR INPUT
VOLTAGE INSPECTION
1. Disconnect the throttle position sensor
coupler.
2. Start the engine.
3. Inspect:
Throttle position sensor input voltage
Out of specification → Replace the CDI
unit.
Tester (+) lead → Blue lead 1
Tester (–) lead → Black/Blue lead 2
Throttle posi-
tion sensor
input voltageTester selector
position
4 ~ 6 V DCV-20
THROTTLE POSITION SENSOR SYSTEM

7 - 20
TUNSETTING
EC72Q000
Rear shock absorber setting parts
Rear shock spring 1
[Equal pitch spring]
[Unequal pitch spring]
* For EUROPE
NOTE:
The unequal pitch spring is softer in initial
characteristic than the equal pitch spring and
is difficult to bottom out under full compres-
sion.
The I.D. color a is marked at the end of the
spring.
Extent of adjustment (spring length)
TYPESPRING
RATESPRING
PART NUMBERI.D.
COLOR/
POINTSPRING
FREE
LENGTH
SOFT4.3
4.55UN-22212-00
5UN-22212-10Brown/1
Green/1260
260
STD 4.7 5UN-22212-20 Red/1 260
STIFF4.9
5.1
5.3
5.5
5.75UN-22212-30
5UN-22212-40
5UN-22212-50
5UN-22212-60
5UN-22212-70Black/1
Blue/1
Yellow/1
Pink/1
White/1260
260
260
260
260
TYPESPRING
RATE
(approx.)SPRING
PART NUMBERI.D.
COLOR/
POINTSPRING
FREE
LENGTH
SOFT4.5
4.75UN-22212-A0
5UN-22212-B0Green/2
Red/2275
275
*STD 4.9 5UN-22212-C0 Black/2 275
STIFF5.1
5.3
5.5
5.75UN-22212-D0
5UN-22212-E0
5UN-22212-F0
5UN-22212-G0Blue/2
Yellow/2
Pink/2
White/2275
275
275
275
SPRING FREE
LENGTHEXTENT OF
ADJUSTMENT b
260 mm (10.24 in)240.5 ~ 258.5 mm
(9.47 ~ 10.18 in)
275 mm (10.83 in)255.5 ~ 273.5 mm
(10.06 ~ 10.77 in)