KTM 450 SX 2009 Owner's Manual page 164

MAINTENANCE ON CHASSIS AND ENGINE
Warning
Environmental hazard Problem materials cause environmental damage.
–
Dispose of oil, grease, filters, fuel, cleaning substances, brake fluid, batteries, etc. according to regulations.
–
Place a suitable container under the engine.
–
Remove screws
300262-10
–
Pull oil filter element
Circlip pliers reverse (51012011000)
–
Completely drain the engine oil.
–
Thoroughly clean parts and sealing area.
300263-10
. Take off the oil filter cover with the O-ring.

out of the oil filter case.

162