How often do i need to change oil

SMR's only hold about a liter. My 2007 SMR510 only held a liter of oil. Use the good stuff and change it often!!! I never went over 700 miles on oil.

you need to be more specific!

Hey Anon, Run a compression check..screw the compression gauge into the head until the o-ring seats..( a coat of oil on the o-ring helps) hold the throttle wide open and kick it over about 6-8 times HARD.. you should get at least 120psi..if it is lower than 110psi you need to find out why...
if you don't have the tools/knowledge/experience .. .. take it to a qualified pro...

35 ft lb

Thank you for contacting FixYa with your inquiry.
The suggested amount is 1.2 L.

You can download the owners/service manual from this site. http://www.ktm.com/450-EXC.72.0.html?&detailview=4&cHash=dcbf8829e1
Just a note:
I have the same bike and 1.2l of oil will NOT register in the sight glass. I can't even see it in the bottom of the glass. SO IGNORE THE GLASS IF THIS HAPPENS AND DO NOT KEEP ADDING OIL TILL YOU SEE IT IN THE SIGHTGLASS. Add 1.2 liter if you are changing the filters, and add 1L if you are keeping the old filters in there.
Let us know if we can be of further service.
Kind regards,
TF

Thank you for contacting FixYa with your inquiry.
This is a relatively simple process. You should be able to lay the bike over and disassemble the side case cover that's leaking and replace the gasket. You may have some minor interference with the radiator shroud.
http://cyclehuttktm.com/FicheFinderNew/FicheFinder.aspx
If we can be of further service please advise.
Best wishes,
TF

Thank you for contacting FixYa with your inquiry.
Here is a link that will take you to useful information and the manual for this bike.
http://motors-bay.com/ktm/266-ktm-450-smr.html
Here is an alternate site allowing you to download in pdf format. http://safemanuals.com/user-guide-instructions-owner-manual/KTM/450-SMR-_E
This is probably the best site: http://www.pdf-manual.com/user-guide-instruction-owner-manual-ktm-450-smr-supermoto-2004-17823.html
Thank you again for contacting FixYa please advise if we can provide further assistance.
TF

I have looked but am at a loss to find it also.
If you drain the oil, refil it with the same amount and then check the levels adding as required.
Hope this helps.

Easiest way to get it all out is to remove the petcock. Tilt the tank until all gas gets to the petcock hole.

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The engine may have been over-filled with oil, or the crankcase venting system hose is plugged. It may also be a bad oil seal on any shaft that penetrates the engine/transmission case.