20 Most Recent 2012 KTM SX 250 Questions & Answers

Needs lower head gasket

Check again for a bolt on the inside surfaces of the cases. All bolts are NOT on the edges!!!

Air leak on the air filter side of fuel system. Check all clips are secure.

This should answer your questions:http://www.eurospares.com/graphics/suspension/springchart.jpghttp://www.eurospares.com/graphics/suspension/SWspring001.jpghttp://www.eurospares.com/graphics/suspension/SWspring002.jpghttp://www.eurospares.com/graphics/suspension/SWspring003.jpg

Bad piston / rings or perhaps a blockage in the crankcase ventilation system.A compression test will tell you the condition of your piston / ring / cylinder. Look closely around your engine for fresh sign of oil "weeping" from any gasket surfaces. This may help determine a blocked vent as pressure can build in the crankcase and find any way out it can via gaskets / seals / or past the rings into the combustion chamber.

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

Up front on the fork, "Compression" (factory set to 18). Leave it there for beginner. Turn it down as you get better (17 for novice, 15 for intermediate and 13 for pro). "Fork Rebound" (factory set to 21). Turn it up a click for more advanced riding. Otherwise, leave it alone. REAR SHOCK "Low-Speed Compression" (factory set to 15) Turn it down for advance riding ( 11-14) otherwise leave it stock. "Rebound" (factory setting is 24). Turn it up for advanced riding (25 or 26) "High-Speed Compression" (factory is 1.25) Turn it up for advanced riding (up to 1.5) "Sag" (Factory set to 110 - 113 mm) Turn it up for advance riding (113 to 120 mm). good luck
113 112-
120 109-
113

Read more: http://www.dirtrider.com/reviews/motocross/141_0901_first_test_2009_ktm_250_sxf/ktm_250_sxf_specs_settings_suspension.html#ixzz1MxEcU5bW

On the side of your motor you have a oil level crew. fill her up till it comesa out.

That will be either adjustment, bent plates or the oil used is the wrong grade. As it is a 2011 model, it will be covered under warranty.

Check spark plug and carb.

If you don't mind a few oil drips on the garage floor it should not hurt anything provided the leak isn't so bad that a constant drip is present. Running out of gearbox oil would not be a good thing. Why not just get a new seal?

If the engine still turns, you will most likely need to get the transmission (Cases) split open. First check to see if the shifter lever moves up and down, and if not, this may be a good place to look into. If not, a bent shift fork, notched shift drum, or bad gear could be the issue.

It can be just the head gasket. The KTM are very good bikes, if the price is good Go for it. Replacing the head gasket will alow you to see for yourself whats up. 

That would be like riding a fixed wheel bike.Think about how you will stop and start. Only hydraulic fluid will leak. Bad idea!

Question edited for clarity. That sounds like it is just a bad connection somewhere or possibly a bad switch. Remove the battery leads and clean the lead contacts and battery posts with a wire brush. Smear with Vaseline and reconnect. Remove the starter leads and do the same. Then it could be the Starter Relay https://www.google.com/search?q=ktm+450+sx-f+starter+relay+location Or Starter Button https://www.google.com/search?q=ktm+450+sx-f+starter+button+replacement ..

personnaly I would replace cylinder with new OEM

All dirt bikes have a VIN. It is on the steering neck. https://www.google.com/search?q=vin+on+my+ktm+300 ..

Have you checked battery connections. Run switch in the correct position? Checked spark plug for debris? Just thinking out loud..

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

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