20 Most Recent 2008 KTM 250 XC Questions & Answers


Has the bike been laid over? Could be possible that your air filter is soaked with oil and is burning off( smoke) or being forced out of the muffler.

2008 KTM 250 XC | Answered on Oct 28, 2013


If your bike ran good previously - and nothing has been changed that would require rejetting or a needle adjustment, I would look for problems elsewhere. Such as:
Has the bike been stored for more than a few months at a time? If so, the carburetor jets could be plugged with fuel varnish. Only being able to start with the choke applied - and an inability to idle are both classic symptoms of this. Remove and disassemble the carburetor. Clean it and the jets out with carb cleaner and compressed air, then reassemble. Also make sure the fuel in the tank is fresh and that the fuel strainer (usually with the fuel petcock) is clean.
There are three ingredients required for combustion: fuel, compression, and a spark (at the right time). So long as you've got each of these - it has got to run.

2008 KTM 250 XC | Answered on Feb 21, 2010


It's a good possibility it's just the chain smacking the chain buffer on the swingarm.

2008 KTM 250 XC | Answered on Dec 30, 2009


ok buddy you can try this on carb is a scew the mixture screw try fidling with this till it runs ok and do the same with the idle only turn the idle screw in 1/4 turns at a time until it idles get back to me if not okee2a68c.jpg

2008 KTM 250 XC | Answered on Sep 28, 2009


needs rebore!
Cheers rob

2008 KTM 250 XC | Answered on Aug 15, 2009


clean your carbarator

2008 KTM 250 XC | Answered on May 19, 2009


sounds like the idle jet is cloged and u need to clean out the carb jets

2008 KTM 250 XC | Answered on Dec 16, 2008


Thanks for contacting FixYa. I was reviewing some of the older un-answered questions trying to ensure your issue has been resolved.

KTM Torque settings


  1. Collar screw, front wheel spindle Front axle nut 40Nm 30ft lbs
  2. Brake Caliper front Brake Caliper front Loctite 243 2 19ft lbs
  3. Brake Disk, front Brake disk front Loctite 243 1 11ft lbs
  4. Brake Disk, rear Brake disk rear Loctite 243 1 11ft lbs
  5. Clamping screws, upper fork bridge Top triple clamp 20Nm 15ft lbs
  6. Clamping screws, lower fork bridge Bottom triple clamp 15Nm 11ft lbs
  7. Clamping screws, fork stubs Front axle pinch bolts 10Nm 7ft lbs
  8. Collar nut, rear wheel spindle Rear axle nut 80Nm 59ft lbs
  9. Hex nut swingarm bolt Swingarm nut 100Nm 74ft lbs
  10. Hex collar screw handlebar clamp Upper handlebar clamps 20Nm 15ft lbs
  11. Allen head screw handlebar support Lower handlebar clamps Loctite 243 4 30ft lbs
  12. Shock absorber top Shock absorber top bolt 60Nm 44ft lbs
  13. Shock absorber bottom Shock absorber botton bolt 60Nm 44ft lbs
  14. Sprocket screws Rear sprocket bolts Loctite 243 3 25ft lbs
  15. Ball joint for push rod Rear brake pedal pivot Loctite 243 1 7ft lbs
  16. Engine mounting bolts Engine mounting bolts 45Nm 33ft lbs
  17. Engine brace Engine brace 33Nm 24ft lbs
  18. Screw adjusting ring spring preload Shock preload collar bolt 8Nm 6ft lbs
  19. Spoke nipple Spokes 5Nm 4ft lbs
  20. Other Screws on chassis M6 10Nm 7ft lbs
  21. M8 25Nm 19ft lbs
  22. M10 45Nm 33ft lbs
  23. Other collar nutes on chassis M6 15Nm 11ft lbs
  24. M8 30Nm 22ft lbs
  25. M10 50Nm 37ft lbs
  26. Front Sprocket 44ft lbs

TF

KTM 250 XC... | Answered on Oct 28, 2011


Thank you for contacting FixYa with your inquiry.
I have compiled a list of all the useful KTM torque setting that apply to your bike.

KTM Torque settings


  1. Collar screw, front wheel spindle Front axle nut 40Nm 30ft lbs
  2. Brake Caliper front Brake Caliper front Loctite 243 2 19ft lbs
  3. Brake Disk, front Brake disk front Loctite 243 1 11ft lbs
  4. Brake Disk, rear Brake disk rear Loctite 243 1 11ft lbs
  5. Clamping screws, upper fork bridge Top triple clamp 20Nm 15ft lbs
  6. Clamping screws, lower fork bridge Bottom triple clamp 15Nm 11ft lbs
  7. Clamping screws, fork stubs Front axle pinch bolts 10Nm 7ft lbs
  8. Collar nut, rear wheel spindle Rear axle nut 80Nm 59ft lbs
  9. Hex nut swingarm bolt Swingarm nut 100Nm 74ft lbs
  10. Hex collar screw handlebar clamp Upper handlebar clamps 20Nm 15ft lbs
  11. Allen head screw handlebar support Lower handlebar clamps Loctite 243 4 30ft lbs
  12. Shock absorber top Shock absorber top bolt 60Nm 44ft lbs
  13. Shock absorber bottom Shock absorber botton bolt 60Nm 44ft lbs
  14. Sprocket screws Rear sprocket bolts Loctite 243 3 25ft lbs
  15. Ball joint for push rod Rear brake pedal pivot Loctite 243 1 7ft lbs
  16. Engine mounting bolts Engine mounting bolts 45Nm 33ft lbs
  17. Engine brace Engine brace 33Nm 24ft lbs
  18. Screw adjusting ring spring preload Shock preload collar bolt 8Nm 6ft lbs
  19. Spoke nipple Spokes 5Nm 4ft lbs
  20. Other Screws on chassis M6 10Nm 7ft lbs
  21. M8 25Nm 19ft lbs
  22. M10 45Nm 33ft lbs
  23. Other collar nutes on chassis M6 15Nm 11ft lbs
  24. M8 30Nm 22ft lbs
  25. M10 50Nm 37ft lbs
  26. Front Sprocket 44ft lbs
Let us know if we can provide further assistance.
Best regards,
TF

KTM 250 XC... | Answered on Jul 17, 2011


Hi
tighten evenly in a diagonal pattern
1st just nip up
2nd 40Nm
3rd 50Nm

Ride Safe
Bike-Doc

Please rate this answer

KTM 250 XC... | Answered on Dec 05, 2010


Drain oil. Use degreaser to clean area. Use JB Weld & allow to set up properly before adding oil.

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KTM Motorcycles | Answered on Mar 14, 2020

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bike only starts choke wont idle

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