TROUBLESHOOTING
9-8
EAM30513
TROUBLESHOOTING OF BRAKE
EAM30514
TROUBLESHOOTING OF SUSPENSION
Symptom
Possible cause
Actions
Poor performance of disc brake
Worn brake pad
Replace the brake pads as a set.
Worn or deflected brake disc
Replace the brake disc.
Air in hydraulic brake system
Bleed the hydraulic brake system.
Brake fluid leakage
Check the hydraulic brake system
and repair or replace faulty parts
as necessary.
Incorrect brake fluid level (low)
Add brake fluid to the specified
level.
Stuck brake caliper piston
Replace the caliper piston seal.
Stuck brake caliper and slide pin
Lubricate the caliper slide pin.
Loose union bolt
Tighten the union bolt to the speci-
fied torque.
Damaged brake hose and brake
pipe
Replace the brake hose and brake
pipe.
Oil or grease on the brake disc or
brake pad
Clean the brake disc or brake pad.
Insufficient lubrication of brake
lever or brake pedal pivot
Lubricate the brake lever or brake
pedal pivot.
Symptom
Possible cause
Actions
Front fork is hard
Bent or damaged inner tube
Replace the inner tube.
Bent or damaged outer tube
Replace the outer tube.
Damaged or worn slide metal
Replace the slide metal.
Bent or damaged damper rod
Replace the damper rod.
Bent wheel axle
Replace the wheel axle.
Incorrect oil viscosity (high)
Change to recommended fork oil.
Incorrect oil level (high)
Adjust to the specified oil level.
Improperly adjusted spring pre-
load (hard)
Adjust the spring preload.
Improperly adjusted rebound
damping (hard)
Adjust the rebound damping.
Improperly adjusted compression
damping (hard)
Adjust the compression damping.
Содержание YZ450F 2021
Страница 6: ...EAM20162 YAMAHA MOTOR CORPORATION U S A YZ MOTORCYCLE LIMITED WARRANTY ...
Страница 10: ......
Страница 44: ...MOTORCYCLE CARE AND STORAGE 1 32 ...
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 148: ...REAR BRAKE 4 34 system Refer to BLEEDING THE HYDRAULIC BRAKE SYSTEM on page 3 25 ...
Страница 188: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 2 EAM30507 LUBRICATION DIAGRAMS 1 Camshaft 2 Drive axle 3 Main axle ...
Страница 189: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 3 1 Connecting rod 2 Oil nozzle 3 Crankshaft ...
Страница 190: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 4 1 Exhaust camshaft 2 Intake camshaft 3 Oil filter element 4 Oil pump ...
Страница 191: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 5 5 1 Oil filter element 2 Oil pump 3 Oil strainer ...
Страница 206: ...CAMSHAFT 5 20 6 Install Cylinder head breather hose Spark plug Spark plug 13 N m 1 3 kgf m 9 6 lb ft T R ...
Страница 262: ...TRANSMISSION 5 76 ...
Страница 272: ...WATER PUMP 6 9 ...
Страница 282: ...THROTTLE BODY 7 9 ...
Страница 289: ...IGNITION SYSTEM 8 6 ...
Страница 290: ...ELECTRIC STARTING SYSTEM 8 7 EAM20143 ELECTRIC STARTING SYSTEM EAM30279 CIRCUIT DIAGRAM ...
Страница 294: ...CHARGING SYSTEM 8 11 EAM20144 CHARGING SYSTEM EAM30282 CIRCUIT DIAGRAM ...
Страница 297: ...CHARGING SYSTEM 8 14 ...
Страница 298: ...FUEL INJECTION SYSTEM 8 15 EAM20145 FUEL INJECTION SYSTEM EAM30284 CIRCUIT DIAGRAM ...
Страница 321: ...FUEL INJECTION SYSTEM 8 38 ...
Страница 322: ...FUEL PUMP SYSTEM 8 39 EAM20146 FUEL PUMP SYSTEM EAM30287 CIRCUIT DIAGRAM ...
Страница 352: ...SELF DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE 9 15 ...
Страница 362: ...CHASSIS 10 9 ...
Страница 364: ......
Страница 366: ......
Страница 368: ...YZ450FM 2021 WIRING DIAGRAM B2W 2819U 11_W D indd 2 2020 02 05 10 21 39 ...