2001 YAMAHA YZ250F ad blue

6 - 10
–+ELECTHROTTLE POSITION SENSOR SYSTEM
6. Adjust:
lThrottle position sensor coil resistance
at idle speed
Adjustment steps:
Adjust the angle of the throttle position sen-
sor 1 to obtain the resistance calculated
(example: 650 ~ 750 W)
Tester (+) lead ® Yellow lead 2
Tester (–) lead ® Black lead 3
7. Tighten:
lScrew (throttle position sensor) 1
NOTE:
Tighten the screws (throttle position sensor)
using the T20 bit (tamper resistant fastener
type).
8. Install:
lThrottle position sensor coupler
THROTTLE POSITION SENSOR INPUT
VOLTAGE INSPECTION
1. Disconnect the throttle position sensor
coupler.
2. Start the engine.
3. Inspect:
lThrottle 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

7 - 20
TUNSETTING
EC72Q000
Rear shock absorber setting parts
lRear shock spring 1
[Equal pitch spring]
[Unequal pitch spring]
* For EUROPE
NOTE:
lThe unequal pitch spring is softer in initial
characteristic than the equal pitch spring and
is difficult to bottom out under full compres-
sion.
lThe I.D. color a is marked at the end of the
spring.
lExtent of adjustment (spring length)
TYPESPRING
RATESPRING
PART NUMBERI.D.
COLOR/
POINTSPRING
FREE
LENGTH
SOFT4.4
4.65DH-22212-70
5DH-22212-10Brown/1
Green/1260
260
STD 4.8 5DH-22212-20 Red/1 260
STIFF5.0
5.2
5.4
5.65DH-22212-30
5DH-22212-40
5DH-22212-50
5DH-22212-60Black/1
Blue/1
Yellow/1
Pink/1260
260
265
265
TYPESPRING
RATE
(approx.)SPRING
PART NUMBERI.D.
COLOR/
POINTSPRING
FREE
LENGTH
SOFT4.6
4.85ET-22212-20
5ET-22212-00Green/2
Red/2275
275
*STD 5.0 5ET-22212-10 Black/2 275
STIFF5.2
5.4
5.65ET-22212-30
5ET-22212-40
5ET-22212-50Blue/2
Yellow/2
Pink/2275
275
280
SPRING FREE
LENGTHEXTENT OF
ADJUSTMENT b
260 mm (10.24 in)242 ~ 260 mm
(9.53 ~ 10.24 in)
265 mm (10.43 in)247 ~ 265 mm
(9.72 ~ 10.43 in)
275 mm (10.83 in)257 ~ 275 mm
(10.12 ~ 10.83 in)
280 mm (11.02 in)262 ~ 280 mm
(10.31 ~ 11.02 in)