Yamaha WR125X 2009 Service Manual

TROUBLESHOOTING
9-4
7. Wheel(s)
• 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
• Incorrect connection
• Improperly grounded circuit
• Poor contacts (main switch)
• Burnt-out headlight bulb
Headlight bulb burnt out
• Wrong headlight bulb
• Faulty battery
• Faulty rectifier/regulator
• Improperly grounded circuit
• Faulty main switch
• Headlight bulb life expired
Tail/brake light does not come on
• Wrong tail/brake light bulb
• Too many electrical accessories
• Incorrect connection
• Burnt-out tail/brake light bulb
Tail/brake light bulb burnt out
• Wrong tail/brake light bulb
• Faulty battery
• Tail/brake light bulb life expired
Turn signal does not come on
• Faulty turn signal switch
• Faulty turn signal relay
• Burnt-out turn signal bulb
• Incorrect connection
• Damaged or faulty wire harness
• Improperly grounded circuit
• Faulty battery
• Blown, damaged or incorrect fuse
Turn signal blinks slowly
• Faulty turn signal relay
• Faulty main switch
• Faulty turn signal switch
• Incorrect turn signal bulb
Turn signal remains lit
• Faulty turn signal relay
• Burnt-out turn signal bulb
Turn signal blinks quickly
• Incorrect turn signal bulb
• Faulty turn signal relay
• Burnt-out turn signal bulb
Horn does not sound
• Improperly adjusted horn
• Damaged or faulty horn
• Faulty main switch
• Faulty horn switch
• Faulty battery
• Blown, damaged or incorrect fuse
• Faulty wire harness

Yamaha WR125X 2009 Specifications

General

Displacement	124.7cc
Bore x Stroke	52.0 mm x 58.6 mm
Compression Ratio	11.2:1
Cooling System	Liquid-cooled
Fuel System	Fuel Injection
Ignition	TCI
Front Suspension	Telescopic forks
Rear Brake	Single disc, 220 mm
Wet Weight	137 kg
Lubrication System	Wet sump
Starter System	Electric
Final Transmission	Chain
Overall Width	835 mm
Overall Height	1, 165 mm
Wheel Base	1, 430 mm
Engine Type	Liquid-cooled, 4-stroke, SOHC
Rear Suspension	Swingarm (link suspension)
Front Brake	Single disc, 298 mm
Front Tire	110/70-17
Rear Tire	140/70-17
Maximum Power	11.0 kW (15.0 PS) @ 9, 000 rpm
Maximum Torque	12.2 Nm @ 8, 000 rpm
Frame	Steel
Front Tyre	110/70-17
Rear Tyre	140/70-17
Oil Tank Capacity	1.15 L