Start the bike up and ride it or let it idle for a few minutes to war the oil up in the engine. Then kill the engine and loosen the drain plug on the bottom of the engine. Let all of the oil drain out and replace and tighten (careful to not overtighten) the drain plug. Remove the filler plug and add your oil.
The engine oil capacity for a 2010 KTM 250 XCF-W is 0.75L. It is also stated that the best oil to use for the 2010 KTM 250 XCF-W is the 10W-40 bike oil.
No, you have to premix
250 mil I believe...
250 cc
For a 250 SX KTM recommends Motorex Top Speed 4T 15W50 (.7 L). For a 250 SX-F KTM recommends Motorex Power Synt 4T 10W50 (1.1 L).
No
You can find that info , as well as a lot more, here: http://motocross.transworld.net/2003/07/09/2004-ktm-125-sx-200-sx-250-sx-and-525-sx/
KTM recommends Motorex Top Speed 4T 15W50 oil 0.7 L
On the bottom at the back (toward the rear wheel) of the cases.
1 l + 1 dl.
No not on a 2 stroke 250SX, however the 4 stroke 250 SXF does.
.7 L