2004 YAMAHA WR 450F stop start

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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 652 of 754

YAMAHA WR 450F 2004  Owners Manual  
6 - 4
–+ELEC
 
IGNITION SYSTEM 
SPARK GAP TEST 
1. Disconnect the ignition coil from spark
plug.
2. Remove the ignition coil cap.
3. Connect the dynamic spark tester  
1  
(ignition checker  
2 
)

Page 653 of 754

YAMAHA WR 450F 2004  Owners Manual –+ELEC
SYSTEME D’ALLUMAGE
ZÜNDANLAGE
SISTEMA DE ENCENDIDO
ZÜNDFUNKENSTRECKE KON-
TROLLIEREN
1. Die Zündspule von der Zünd-
kerze abtrennen.
2. Die Zündspule ausbauen.
3. Den Zündfunkenstreck

Page 696 of 754

YAMAHA WR 450F 2004  Owners Manual 6 - 23
–+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. Insp

Page 697 of 754

YAMAHA WR 450F 2004  Owners Manual –+ELEC
8. Festziehen:
Schraube (TPS) 1 
9. Den Motor Stoppen
PRÜFEN DER TPS-EINGANGS-
SPANNUNG
1. Die TPS-Steckverbindung 
trennen.
2. Den Motor starten.
3. Prüfen:
TPS-Eingangsspannung
Außerha

Page 706 of 754

YAMAHA WR 450F 2004  Owners Manual  
7 - 2
TUN
CAUTION:
 
 
The carburetor is extremely sensitive to
foreign matter (dirt, sand, water, etc.).
During installation, do not allow foreign
matter to get into the carburetor. 
 
Always han
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