KTM 545 XC ATV EU 2011 Owner's Manual page 180

MAINTENANCE WORK ON THE ENGINE
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Disconnect the ground cable
–
Remove screws
600137-10
–
Pull the oil filters
Circlip pliers reverse (51012011000)
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Completely drain the engine oil.
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Thoroughly clean parts and sealing area.
600138-10
from the engine.

and . Take off the oil filter cover with the O-ring.
 
and out of the engine case.
 
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