What are the torque specs for the cylinder head & cylinder nuts for a 2008 KTM 250 XC?

cylinder head the torque is : step 1 55 ft-lb, step 2 65 ft-lb, step 3 85 ft-lb. Rocker arm stud nut or bolt is 17 to 23 ft-lb. and valve cover bolt 72 to 108 in-lb.

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

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

Flange Bolts - Cylinder Head M7 18Nm
Nuts - Cylinder Base M8 35Nm

The torque specs for your cylinder base nuts are 25ft.-lb.and the head flange nuts at 18ft.-lb.tighten them in criss cross pattern,at three different stages,ex.25ft.-lb.start with 8 then15 then 25,18ft.-lb.start with 5 then 10 then 18.good to go.Hope this helps.

http://www.bikebandit.com/2008-ktm-motorcycle-250-xc-f-usa/o/m15771#sch482900

Please see this schematic. It is for your machine.

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

Ride Safe
Bike-Doc

Please rate this answer

Manifold to Cylinder head (acorn nuts) tighten to 21 Nm or 15.5 Lb/Ft

Cylinder bolts @ 25 ft/lbs (34Nm)
Cylinder head nuts @ 18ft/lbs (25Nm)
Check these nuts again after first warm up and again after first two rides to let gaskets bed in and seal. Cheers.

Thank you for contacting FixYa with your inquiry. I have been going
over some of the older help requests that have been archieved and
trying to provide solutions for those that didn't get answered. Hope
this information helps.

Try these:

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 bottom 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 nuts on chassis M6 15Nm 11ft lbs
24. M8 30Nm 22ft lbs
25. M10 50Nm 37ft lbs
26. Front Sprocket 44ft lbs

TF