KTM 250 EXC RACING 2004 User Manual (English)

Questions and Answers:

J
joshuarileyAug 19, 2025
How to fix KTM 250 EXC RACING 2004 engine when it doesn’t crank?
- T
  Tracy JohnsonAug 19, 2025
  If the engine of your KTM Motorcycle doesn’t crank, it could be due to an operating error, a blown fuse, a discharged battery, or low outside temperature. You should turn on the emergency-OFF switch (Australia only), dismount the left paneling and the filter box cover and replace the fuse in the starter relay, recharge the battery and investigate the causes for discharging, or start the engine with the kickstarter.
A
Anthony MejiaAug 22, 2025
Why does my KTM 250 EXC RACING 2004 engine get too hot?
- S
  steven93Aug 22, 2025
  If the engine of your KTM Motorcycle gets too hot, it could be due to several reasons. You may have insufficient cooling liquid, so you should refill it and check for leaks. There might not be enough air stream, so you should drive briskly. Another reason may be that the cooling system hasn't been bled, so you should bleed it. The radiators may be very dirty, so you should clean them with a water jet. There could be foam formation in the cooling system, so you should replace the cooling liquid and use antifreeze liquid with a brand name. A cooling hose might be bent, so you should shorten or replace it. Finally, the thermostat may be defective, so you should dismount and check it, or replace it.
T
Tammy BrownAug 26, 2025
What to do if my KTM 250 EXC RACING 2004 engine will not reach full power?
- J
  James KellyAug 26, 2025
  If your KTM Motorcycle engine will not reach full power, the fuel supply might be partially interrupted, or the carburetor could be dirty, so you should clean and check the fuel system and carburetor. The float may be leaking, so you should replace it. The air filter might be very dirty, so you should clean or replace it. The exhaust system may not be tight or is deformed, or the silencer may not contain enough glass fiber yarn, so you should check if the exhaust is damaged and replace the glass fiber yarn in the exhaust silencer. The valve gap might be too small, so you should adjust it. Finally, the electronic ignition timing may be faulty, so you should have it checked.
Q
qswansonAug 28, 2025
Why KTM 250 EXC RACING 2004 Motorcycle engine fails to idle?
- L
  Laurie GonzalesAug 28, 2025
  If your KTM Motorcycle engine fails to idle, it may be due to a clogged idling jet, so you should disassemble the carburetor and clean the jets. It could also be due to an incorrect adjustment of adjusting screws on the carburetor, so you should have the carburetor adjusted. A defective spark plug or ignition system may also be the cause, so you should replace the spark plug or have the ignition system checked.
K
Kevin MooreAug 30, 2025
What to do if KTM 250 EXC RACING 2004 Motorcycle engine stops or splutters in carburetor?
- R
  Roger GarciaAug 30, 2025
  If your KTM Motorcycle engine stops or sputters in the carburetor, it could be due to insufficient fuel or the engine taking air out of control. To fix this, clean and check the fuel system and carburetor, and check the rubber sleeve and carburetor for a tight fit.
S
Samuel LaneSep 2, 2025
Why KTM Motorcycle engine does not rev high?
- H
  hansonandrewSep 2, 2025
  If your KTM Motorcycle engine does not rev high, it may be because the carburetor fuel level is too high due to a dirty or worn float needle valve, so you should dismount the carburetor and check if it's worn out. The carburetor jets might be loose, so you should tighten them. Finally, the electronic ignition timing could be faulty, so you should have the ignition system checked.
R
Randy LangSep 5, 2025
Why is there high oil consumption in my KTM Motorcycle?
- S
  Sherry SmithSep 5, 2025
  If you observe high oil consumption in your KTM Motorcycle, it could be because the hose of the engine ventilation is bent, so you should dislocate or replace it with a non-buckling ventilation hose. Another reason could be that the engine oil level is too high, so you should check and correct it if necessary. Lastly, the motor oil might be too thin (viscosity), so consider using thicker engine oil.
L
lawsonanthonySep 7, 2025
What causes all lamps to blow out on my KTM Motorcycle?
- J
  Jill LucasSep 7, 2025
  If all switched-on lamps in your KTM Motorcycle have blown out, it is likely that the capacitor or voltage regulator is faulty. You should dismount the seat and fuel tank and check the connections, and then have the capacitor and voltage regulator checked.
K
Kimberly GonzalezSep 12, 2025
What to do if horn, flasher lights and E-starter do not work on KTM 250 EXC RACING 2004?
- S
  Sarah EvansSep 12, 2025
  If the horn, flasher lights, and E-starter on your KTM Motorcycle do not work, it is likely due to a blown fuse in the starter relay. To resolve this, dismount the left side paneling and filter box cover, then replace the fuse.
A
angelagarciaSep 13, 2025
Why is the battery discharged on my KTM 250 EXC RACING 2004?
- P
  palmerlarrySep 13, 2025
  If the battery of your KTM Motorcycle is discharged, it could be because the battery isn’t charged by the generator. You should remove the seat and fuel tank and check the voltage regulator connections; the voltage regulator and generator should be checked by a KTM dealer.

KTM 250 EXC RACING 2004 Specifications

General

Displacement	249 cc
Bore x Stroke	66.4 x 72 mm
Transmission	6-speed
Fuel System	Carburetor
Carburetor Type	Keihin PWK 38S AG
Seat Height	950 mm
Fuel Tank Capacity	9.5 L
Front Brake	Disc brake
Rear Brake	Disc brake
Starter	Kickstarter
Engine Type	Single cylinder, 2-stroke
Torque	38 Nm
Cooling	Liquid-cooled
Front Suspension	WP 48 mm USD
Rear Suspension	WP PDS