engine YAMAHA WR 450F 2004 Owners Manual

YAMAHA WR 450F 2004 Owners Manual WR 450F 2004 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/52484/w960_52484-0.png YAMAHA WR 450F 2004 Owners Manual

Page 650 of 754

YAMAHA WR 450F 2004  Owners Manual –+ELECZÜNDANLAGE
ZÜNDANLAGE
FEHLERSUCHE
Folgendes Diagramm hilft zündanlagen- und zündkerzenbedingte Motorstörungen zu beheben.
*1: Siehe unter “SICHERUNGEN KONTROLLIEREN” im KAPITEL 3.
*2:

Page 651 of 754

YAMAHA WR 450F 2004  Owners Manual –+ELECSISTEMA DE ENCENDIDO
SISTEMA DE ENCENDIDO 
PASOS PARA LA INSPECCIÓN
Utilice los siguientes pasos para comprobar la posibilidad de un funcionamiento incorrecto del motor con res-
pecto a un fa

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 658 of 754

YAMAHA WR 450F 2004  Owners Manual 6 - 7
–+ELEC
ELECTRIC STARTING SYSTEM
STARTING CIRCUIT CUT-OFF SYSTEM 
OPERATION
If the main switch is set to “ON”, the starter
motor can only operate if at least one of the
following conditions

Page 670 of 754

YAMAHA WR 450F 2004  Owners Manual 6 - 12
–+ELECELECTRIC STARTING SYSTEM
STARTER MOTOR
0
9
56
7
5 0 8
9
4
3
2
1
New
New
New
B
5
1
Extent of removal:1 Starter motor disassembly
Extent of removal Order Part name Q’ty Remarks
STARTER

Page 684 of 754

YAMAHA WR 450F 2004  Owners Manual 6 - 18
–+ELECCHARGING SYSTEM
EC624000
COUPLERS AND LEADS CONNECTION 
INSPECTION
1. Check:
Couplers and leads connection
Rust/dust/looseness/short-circuit → 
Repair or replace.
CHARGING VOLTAGE IN

Page 690 of 754

YAMAHA WR 450F 2004  Owners Manual 6 - 20
–+ELECTPS (THROTTLE POSITION SENSOR) SYSTEM
HANDLING NOTE
CAUTION:
Do not loosen the screws {TPS (throttle
position sensor)} 1 except when changing
the TPS (throttle position sensor) due to
f

Page 694 of 754

YAMAHA WR 450F 2004  Owners Manual 6 - 22
–+ELECTPS (THROTTLE POSITION SENSOR) SYSTEM
4. Adjust:
Idle speed
Refer to “IDLE SPEED ADJUST-
MENT” section in the CHAPTER 3. 
5. Insert the thin electric conductors 2
(lead) into the T

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