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ktm 250 sx oil leak

Joined
Jul 10, 2007
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2
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#1
hi ive got a ktm 250 sx 2005 model, and ive just noticed an oil leak either coming from the shift change seal or the front sprocket seal.
is this a common problem and anybody have any tips on doing this job? thank you
 

penguin

N. Texas SP
Joined
Feb 19, 2000
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#2
It is most likely coming from your countershaft seal behind the front sprocket. There is a seal, a metal wear ring, and an O-ring that needs to be replaced. All three parts need to be replaced or the leak will not stop. It is a very common ailment on a KTM. Take the front sprocket off and it will be pretty evident what needs to be done
 
Joined
Jul 10, 2007
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#3
ah nice one, will do i guessed it would be more the front sprocket seal than the shift change seal, but thanks for your info its much apricieated!