TROUBLESHOOTING
9-9
Front fork is soft
Fatigued or broken fork spring
Replace the fork spring.
Incorrect oil viscosity (low)
Change to recommended fork oil.
Incorrect oil level (low)
Adjust to the specified oil level.
Improperly adjusted spring pre-
load (soft)
Adjust the spring preload.
Improperly adjusted rebound
damping (soft)
Adjust the rebound damping.
Improperly adjusted compression
damping (soft)
Adjust the compression damping.
Leaking oil from front fork
Bent, damaged, or corroded inner
tube
Replace the inner tube.
Cracked or damaged outer tube
Replace the outer tube.
Improperly installed oil seal
Replace the oil seal.
Damaged oil seal lip
Replace the oil seal.
Incorrect oil level (high)
Adjust to the specified oil level.
Loose damper rod assembly bolt
Tighten the damper rod assembly
bolt to the specified torque.
Damaged damper rod assembly
bolt copper washer
Replace the damper rod assembly
bolt copper washer.
Cracked or damaged cap bolt O-
ring
Replace the cap bolt O-ring.
Rear suspension is hard
Bent or damaged rear shock
absorber rod
Replace the rear shock absorber.
Bent swingarm pivot shaft
Replace the swingarm pivot shaft.
Damaged or worn swingarm bear-
ing or bushing
Replace the swingarm bearing or
bushing.
Damaged or worn relay arm bear-
ing
Replace the relay arm bearing.
Damaged or worn connecting arm
bearing
Replace the connecting arm bear-
ing.
Improperly adjusted rear shock
absorber spring preload (hard)
Adjust the spring preload.
Improperly adjusted rear shock
absorber rebound damping (hard) Adjust the rebound damping.
Improperly adjusted rear shock
absorber compression damping
(hard)
Adjust the compression damping.
Symptom
Possible cause
Actions
Содержание YZ250FX 2021
Страница 6: ...EAM20162 YAMAHA MOTOR CORPORATION U S A YZ MOTORCYCLE LIMITED WARRANTY ...
Страница 10: ......
Страница 61: ...TIGHTENING TORQUES 2 16 ...
Страница 62: ...CABLE ROUTING DIAGRAM 2 17 EAM20152 CABLE ROUTING DIAGRAM Frame and engine left side view ...
Страница 64: ...CABLE ROUTING DIAGRAM 2 19 Frame and engine right side view ...
Страница 66: ...CABLE ROUTING DIAGRAM 2 21 Handlebar front view ...
Страница 68: ...CABLE ROUTING DIAGRAM 2 23 Frame and engine top view ...
Страница 70: ...CABLE ROUTING DIAGRAM 2 25 Frame and battery top view ...
Страница 72: ...CABLE ROUTING DIAGRAM 2 27 Rear brake right side view ...
Страница 74: ...CABLE ROUTING DIAGRAM 2 29 ...
Страница 112: ...ELECTRICAL SYSTEM 3 36 ...
Страница 153: ...HANDLEBAR 4 39 Throttle grip free play 3 0 6 0 mm 0 12 0 24 in ...
Страница 166: ...FRONT FORK 4 52 1 ...
Страница 184: ...CHAIN DRIVE 4 70 ...
Страница 189: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 3 1 Oil filter element 2 Oil pump ...
Страница 190: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 4 1 Intake camshaft 2 Exhaust camshaft ...
Страница 191: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 5 1 Camshaft 2 Oil pressure check bolt 3 Oil pump 4 Oil filter element ...
Страница 245: ...SHIFT SHAFT 5 59 TIP Align the punch mark a on the shift shaft with the punch mark b in the shift pedal 1 1 2 2 a b ...
Страница 251: ...OIL PUMP 5 65 A Primary drive gear side B Crankcase cover side 5 7 mm 0 02 0 28 in 5 c d 6 8 b 8 6 7 E ...
Страница 264: ...TRANSMISSION 5 78 ...
Страница 274: ...WATER PUMP 6 9 ...
Страница 284: ...THROTTLE BODY 7 9 ...
Страница 287: ......
Страница 288: ...IGNITION SYSTEM 8 1 EAM20142 IGNITION SYSTEM EAM30277 CIRCUIT DIAGRAM ...
Страница 292: ...ELECTRIC STARTING SYSTEM 8 5 EAM20143 ELECTRIC STARTING SYSTEM EAM30279 CIRCUIT DIAGRAM ...
Страница 296: ...CHARGING SYSTEM 8 9 EAM20144 CHARGING SYSTEM EAM30282 CIRCUIT DIAGRAM ...
Страница 299: ...CHARGING SYSTEM 8 12 ...
Страница 300: ...SIGNALING SYSTEM 8 13 EAM20154 SIGNALING SYSTEM EAM30348 CIRCUIT DIAGRAM ...
Страница 304: ...FUEL INJECTION SYSTEM 8 17 EAM20145 FUEL INJECTION SYSTEM EAM30284 CIRCUIT DIAGRAM ...
Страница 329: ...FUEL INJECTION SYSTEM 8 42 ...
Страница 330: ...FUEL PUMP SYSTEM 8 43 EAM20146 FUEL PUMP SYSTEM EAM30287 CIRCUIT DIAGRAM ...
Страница 362: ...SELF DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE 9 15 ...
Страница 372: ...CHASSIS 10 9 ...
Страница 374: ......
Страница 376: ......
Страница 377: ...YZ250FXM 2021 WIRING DIAGRAM BAJ 2819U 11_WD indd 1 2020 06 29 15 46 05 ...
Страница 378: ...YZ250FXM 2021 WIRING DIAGRAM BAJ 2819U 11_WD indd 2 2020 06 29 15 46 06 ...