6-2
IGNITION SYSTEM
IGNITION SYSTEM
INSPECTION STEPS
Use the following steps for checking the possibility of the malfunctioning engine being attributable to ignition system failure
and for checking the spark plug which will not spark.
*marked: Only when the ignition checker is used.
• Remove the following parts before inspection.
1. Seat
2. Fuel tank
• Use the following special tools in this inspection.
Spark gap test
Spark
→
*Clean or replace spark plug.
No spark
↓
Check entire ignition system for connection.
(couplers, leads and ignition coil)
No good
→
Repair or replace.
OK
↓
Check engine stop switch.
No good
→
Replace.
OK
↓
Check ignition coil. (primary coil and secondary
coil)
No good
→
Replace.
OK
↓
Check CDI magneto. (pickup coil and charging
coil)
No good
→
Replace.
OK
↓
Check neutral switch.
No good
→
Repair or replace.
OK
↓
Replace CDI unit.
Dynamic spark tester:
YM-34487
Ignition checker:
90890-06754
Pocket tester:
YU-3112-C/90890-03112
Summary of Contents for YZ450F(X)
Page 2: ......
Page 37: ...2 17 LUBRICATION DIAGRAMS 1 Intake camshaft 2 Exhaust camshaft A To main axle B From oil pump ...
Page 56: ...3 12 ENGINE INTAKE EXHAUST ...
Page 87: ...4 21 CYLINDER HEAD ...
Page 106: ...4 40 OIL PUMP 15 Oil pump drive shaft 1 16 Rotor housing 1 Order Part name Q ty Remarks ...
Page 156: ...5 29 STEERING 9 Bearing race 2 Refer to removal section Order Part name Q ty Remarks ...
Page 165: ...5 38 REAR SHOCK ABSORBER 12 Bearing 2 Refer to removal section Order Part name Q ty Remarks ...
Page 186: ......
Page 196: ...1 4 VERIFICATION DES CONNEXIONS ...
Page 223: ...2 18 DIAGRAMMES DE LUBRIFICATION ...
Page 243: ...3 13 MOTEUR ADMISSION ECHAPPEMENT ...
Page 260: ...4 6 RADIATEUR 11 Tuyau 1 Joint torique 1 1 Ordre Nom de la pièce Qté Remarques ...
Page 276: ...4 22 CULASSE 3 Monter Boulon culasse 1 Boulon culasse 10 Nm 1 0 m kg 7 2 ft lb ...
Page 290: ...4 36 EMBRAYAGE ...
Page 380: ......
Page 435: ...3 13 MOTOR EINLASS AUSLASS ...
Page 451: ...4 5 AUSPUFFKRÜMMER UND SCHALLDÄMPFER ...
Page 474: ...4 28 VENTILE UND VENTILFEDERN ...
Page 549: ...5 38 FEDERBEIN 12 Lager 2 Siehe den Abschnitt zum Ausbau Reihenfolge Bauteil Anz Bemerkungen ...
Page 572: ......
Page 573: ......