Troubleshooting Of Brake; Troubleshooting Of Suspension - Yamaha WR250F 2023 Owner's Manual

EAM30513

TROUBLESHOOTING OF BRAKE

Symptom
Poor performance of disc brake
EAM30514

TROUBLESHOOTING OF SUSPENSION

Symptom
Front fork is hard
Possible cause
Worn brake pad
Worn or deflected brake disc
Air in hydraulic brake system
Brake fluid leakage
Incorrect brake fluid level (low)
Stuck brake caliper piston
Stuck brake caliper and slide pin
Loose union bolt
Damaged brake hose and brake
pipe
Oil or grease on the brake disc or
brake pad
Insufficient lubrication of brake
lever or brake pedal pivot
Possible cause
Bent or damaged inner tube
Bent or damaged outer tube
Damaged or worn slide metal
Bent or damaged damper rod
Bent wheel axle
Incorrect oil viscosity (high)
Incorrect oil level (high)
Improperly adjusted spring pre-
load (hard)
Improperly adjusted rebound
damping (hard)
Improperly adjusted compression
damping (hard)
8-8
TROUBLESHOOTING
Actions
Replace the brake pads as a set.
Replace the brake disc.
Bleed the hydraulic brake system.
Check the hydraulic brake system
and repair or replace faulty parts
as necessary.
Add brake fluid to the specified
level.
Replace the caliper piston seal.
Lubricate the caliper slide pin.
Tighten the union bolt to the speci-
fied torque.
Replace the brake hose and brake
pipe.
Clean the brake disc or brake pad.
Lubricate the brake lever or brake
pedal pivot.
Actions
Replace the inner tube.
Replace the outer tube.
Replace the slide metal.
Replace the damper rod.
Replace the wheel axle.
Change to recommended fork oil.
Adjust to the specified oil level.
Adjust the spring preload.
Adjust the rebound damping.
Adjust the compression damping.