2004 YAMAHA WR 450F sensor

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Page 340 of 754

YAMAHA WR 450F 2004  Owners Manual 4 - 20
ENG
4. Tighten:
Screw (air cleaner joint) 1 
Screw (carburetor joint) 2 
T R..3 Nm (0.3 m · kg, 2.2 ft · lb)
T R..3 Nm (0.3 m · kg, 2.2 ft · lb)
5. Install:
Throttle cable (pull) 1 
Thr

Page 341 of 754

YAMAHA WR 450F 2004  Owners Manual ENG
4 - 20
CARBURATEUR
VERGASER
CARBURADOR
4. Festziehen:
Schraube (Ansaugstutzen)
1 
Schraube (Vergaseran-
schluß) 2 
T R..3 Nm (0,3 m · kg, 2,2 ft · lb)
T R..3 Nm (0,3 m · kg, 2,2 ft · lb)
5.

Page 642 of 754

YAMAHA WR 450F 2004  Owners Manual  
6 - 1
–+ELEC
 
ELECTRICAL COMPONENTS AND WIRING DIAGRAM 
EC600000 
ELECTRICAL 
EC610000 
ELECTRICAL COMPONENTS AND WIRING DIAGRAM 
EC611000 
ELECTRICAL COMPONENTS 
1  
Headlight  
2  
“ENGINE ST

Page 643 of 754

YAMAHA WR 450F 2004  Owners Manual –+ELEC
 
COMPOSANTS ELECTRIQUES ET SCHEMA DE CABLAGE  
ELEKTRISCHE BAUTEILE UND SCHALTPLAN  
COMPONENTES DEL SISTEMA ELÉCTRICO Y DIAGRAMA DE CABLES 
ELEKTRISCHE 
ANLAGE 
ELEKTRISCHE BAUTEI-
LE UND

Page 644 of 754

YAMAHA WR 450F 2004  Owners Manual –+ELEC
 
6 - 2 
MAP-CONTROLLED CDI UNIT
MAP-CONTROLLED CDI UNIT 
A map-controlled, CDI ignition system is used in the WR450F.
The microcomputer in the CDI unit detects the engine speed and throttle

Page 646 of 754

YAMAHA WR 450F 2004  Owners Manual –+ELECKENNFELDGESTEUERTES CDI-ZÜNDSYSTEM
KENNFELDGESTEUERTES CDI-ZÜNDSYSTEM
Die WR450F ist mit einer kennfeldgesteuerten CDI-Zündanlage ausgestattet.
Der Mikroprozessor in der CDI-Zündbox ist st

Page 647 of 754

YAMAHA WR 450F 2004  Owners Manual –+ELECUNIDAD CDI CONTROLADA POR MAPA
6 - 2
UNIDAD CDI CONTROLADA POR MAPA 
Para el modelo WR450F se utiliza un sistema de CDI encendido controlado por mapa.
El microprocesador de la unidad CDI detec

Page 686 of 754

YAMAHA WR 450F 2004  Owners Manual –+ELEC
6 - 19
TPS (THROTTLE POSITION SENSOR) SYSTEM
EC690000
TPS (THROTTLE POSITION SENSOR) SYSTEM
INSPECTION STEPS
If the TPS will not operate, use the following inspection steps.
NOTE:
Use the fol
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