ad blue YAMAHA WR 450F 2003 User Guide

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–+ELECTPS (THROTTLE POSITION SENSOR) SYSTEM
8. Tighten:
Screw (TPS) 1
9. Stop the engine.
1
EC694000
TPS INPUT VOLTAGE INSPECTION
1. Disconnect the TPS coupler.
2. Start the engine.
3. Inspect:
TPS input voltage
Out of specification → Replace the CDI
unit.
Tester (+) lead → Blue lead 1
Tester (–) lead → Black/Blue lead 2
TPS input
voltageTester selector
position
4 ~ 6 V DCV-20

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–+ELECLIGHTING SYSTEM
LIGHTS SWITCH INSPECTION
1. Inspect:
Lights switch conduct
No continuous while being → Replace.
Continuous while being OFF → Replace. Tester (+) lead → Yellow lead 1
Tester (–) lead → Blue lead 2
Y
1L
2Tester selec-
tor position
Ω × 1
OFF
AC MAGNETO INSPECTION
1. Inspect:
Lighting coil resistance
Out of specification → Replace.
RECTIFIER/REGULATOR INSPECTION
1. Connect the battery leads.
2. Start the engine.
3. Turn on the headlight and taillight by turn-
ing on the lights switch.
4. Inspect:
Out-put voltage
Out of specification → Replace rectifier/
regulator. Tester (+) lead → Yellow lead 1
Tester (–) lead → Ground 2
Lighting coil
resistanceTester selector
position
0.224 ~ 0.336 Ω
at 20 ˚C (68 ˚F)Ω × 1
Tester (+) lead → Yellow lead 1
Tester (–) lead → Black lead 2
Out-put voltageTester selector
position
13.0 ~ 14.0 V at
5,000 r/minACV-20
R
BW
Y1
2

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TUNSETTING
EC72Q000
Rear shock absorber setting parts
Rear shock spring 1
[Equal pitch spring]
* For EUROPE
** For AUS, NZ and ZA
[Unequal pitch spring]
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
4.5
4.75UN-22212-00
5UN-22212-10
5UN-22212-20Brown/1
Green/1
Red/1260
260
260
*STD 4.9 5UN-22212-30 Black/1 260
5.1 5UN-22212-40 Blue/1 260
STD 5.2 5UN-22212-90 Purple/1 260
**STD5.3 5UN-22212-50 Yellow/1 260
STIFF5.5
5.75UN-22212-60
5UN-22212-70Pink/1
White/1260
260
TYPESPRING
RATE
(approx.)SPRING
PART NUMBERI.D.
COLOR/
POINTSPRING
FREE
LENGTH
SOFT
STIFF4.5
4.7
4.9
5.1
5.3
5.5
5.75UN-22212-A0
5UN-22212-B0
5UN-22212-C0
5UN-22212-D0
5UN-22212-E0
5UN-22212-F0
5UN-22212-G0Green/2
Red/2
Black/2
Blue/2
Yellow/2
Pink/2
White/2275
275
275
275
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)