20 Most Recent 2008 KTM 450 SX-F Questions & Answers

Magura blood do not use dot 3 or 4.

Check for any gaps around the head and block possible blown head gasket or hate to say cracked head

Replace your water pump and or impellar

Thank you for contacting FixYa with your inquiry.
According to the KTM service manual the cold valve clearances for this model are as follows:
Valve Clearance Cold intake - 0.07....0.13mm (0.0028...0.0051 in) Valve Clearance Cold exhaust - 0.12--- 0.18mm (0.0047...0.0071 in)
If we can provide further information please advise.
Kind regards,
TF

So you spend thousands and in return Boyds told you there unable to fix it and cant refund the money they charged you in the first place to fix it?here to help,SincerelyRyan

Thank you for contacting FixYa with this interesting question.There has always been an ongoing debate on this issue. The objective is to make your front wheel stick in the corners while not pinching the tube against the wheel usually means more air 15 - 25 lbs front, 12 - 16 lbs rear. Wet or dry conditions make a huge difference. You can run a lot more air when it's dry (dessert racing etc...) even in the woods the clay gets really hard packed and you might as well leave the air at higher levels for flat tire prevention. I ride in Oregon where we usually have mud. I pack a Malcolm Smith compressed air dispenser in my fanny pack so I can increase or decrease the pressure as needed when competing on special tests or sections where I need lower air pressure to get extra tread grip on my knobs. In muddy sections I like 10 - 14 lbs of rear tire pressure and new knobbies. Suggestion would be to keep experimenting with pressure, keep sharp knobs on your tires and don't get any flats from tube pinches in the middle of now where. Carry a dozen or so of those 14 inch zip ties so if you get a flat you can zip tie the tire to the wheel and ride her back to the pits. Happy ripping and keep the wire tight,TF

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 Owners Manual

http://www.ktmusa.com/download.php?dataID=8101G9_OM_EN.pdf

KTM Service Manual

http://www.ktmcyclehutt.com/ktm-parts/ktm-parts-search.php?ktm-motorcycle-parts=Repair-Manuals&year=2007&ktm-model=sxf-450&fitment=bigbikes-all

KTM Repair Manuals Order Site

http://www.repairmanual.com/KTM.html

http://www.tryvod.com/search/ktm-2008-450-xcf-owners-manual-download.html

http://www.pdf-manual.com/user-guide-instruction-owner-manual-ktm-450-exc-2008-17793.html

http://www.pdf-manual.com/telechargement2.php?id=17793

http://www.mydrive.ch/browse#/

Manuals General:

http://www.dansmc.com/shopmanual2.htm

Other Manuals Sites: http://www.fixya.com/motorcycles/ktm

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.

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

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

check carb boots. check jetting

Did you pull the carburetter off and clean it out also? If the bike was still running it has probably got a belly full of water. Great work on dumping and refilling the oil. But you need to check your carbs and your air filter. If the air filter is wet it will run for a little while then stop. Also check your spark plug and leads make sure they don't have water in them or haven't corroded.

So make sure you have good air, spark and fuel delivery.

No, totally different engine. 07 and above 450SXF will work.

Since you have taken the clutch side casing off you now need to align the balancer shaft. Put engine at TDC and the balancer weight facing downwards.

You need a new water pump seal. It is fairly easy to fix and the parts are not expensive. Repair it before you cook your motor - that is an expensive, complicated repair.

You might take your coil off (under the gas tank) and have it checked at a reputable shop

It helps but if you have the castle nuts with the nylon ring on inside of nut (these are called aircraft nuts)then lock tite not needed.Or if you have the lock washers that bend over nut you wont need lock tite.If you have it it dosent hurt to use it.

12.8 is a good voltage for a battery under load, but that depends on the load. The voltage with the engine running at about 3000 rpm should however be at least 13.8. If it is still 12.8 the alternator is not charging and you will need to get that checked out.

Heres one site that sells manuals for KTM
http://www.ktmcyclehutt.com/ktm-parts/ktm-hardparts.php?ktm-motorcycle-parts=Repair-Manuals&fitment=bigbikes