Yamaha XT250X - Faulty Front Fork Legs; Faulty Lighting or Signaling System; Overheating; Poor Braking Performance

TROUBLESHOOTING
8-3
● Incorrect oil level
●
Incorrect oil viscosity (high)
● Deteriorated oil
EAS28590
OVERHEATING
Engine
1. Cylinder head(s) and piston(s)
● Heavy carbon buildup
2. Engine oil
● Incorrect oil level
●
Incorrect oil viscosity
● Inferior oil quality
Fuel system
1. Carburetor(s)
● Incorrect main jet setting
● Incorrect fuel level
●
Damaged or loose carburetor joint
2. Air filter
● Clogged air filter element
Chassis
1. Brake(s)
●
Dragging brake
Electrical system
1. Spark plug(s)
● Incorrect spark plug gap
● Incorrect spark plug heat range
2. Ignition system
● Faulty ignitor unit
EAS28620
POOR BRAKING PERFORMANCE
●
Worn brake pad
● Worn brake disc
● Air in hydraulic brake system
● Leaking brake fluid
●
Faulty brake caliper kit
● Faulty brake caliper seal
● Loose the union bolt
● Damaged brake hose
● Oil or grease on the brake disc
● Oil or grease on the brake pad
● Incorrect brake fluid level
EAS28660
FAULTY FRONT FORK LEGS
Leaking oil
● Bent, damaged or rusty inner tube
●
Cracked or damaged outer tube
● Improperly installed oil seal
● Damaged oil seal lip
● Incorrect oil level (high)
● Loose damper rod assembly bolt
●
Damaged damper rod assembly bolt copper
washer
● Cracked or damaged cap bolt O-ring
Malfunction
● Bent or damaged inner tube
● Bent or damaged outer tube
● Damaged fork spring
● Worn or damaged outer tube bushing
● Bent or damaged damper rod
●
Incorrect oil viscosity
● Incorrect oil level
EAS28690
UNSTABLE HANDLING
1. Handlebar
● Bent or improperly installed handlebar
2. Steering head components
● Improperly installed upper bracket
● Improperly installed lower bracket
(improperly tightened ring nut)
● Bent steering stem
● Damaged ball bearing or bearing race
3. Front fork leg(s)
● Uneven oil levels (both front fork legs)
●
Unevenly tensioned fork spring (both front
fork legs)
● Broken fork spring
● Bent or damaged inner tube
● Bent or damaged outer tube
4. Swingarm
● Worn bearing or bushing
● Bent or damaged swingarm
5. Rear shock absorber assembly(-ies)
● Faulty rear shock absorber spring
● Leaking oil or gas
6. Tire(s)
● Uneven tire pressures (front and rear)
● Incorrect tire pressure
● Uneven tire wear
7. Wheel(s)
● Incorrect wheel balance
● Broken or loose spoke
● Damaged wheel bearing
● Bent or loose wheel axle
● Excessive wheel runout
8. Frame
●
Bent frame
● Damaged steering head pipe
● Improperly installed bearing race
EAS28710
FAULTY LIGHTING OR SIGNALING SYSTEM
Headlight does not come on
● Wrong headlight bulb
● Too many electrical accessories
● Hard charging