Im doing my piston ond ring how do I go about it

Joined
Jun 23, 2001
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#1
Hi im puting a new piston and ting into my cr 250 96 . Could anabody give me some tips on how to do it. I looked into my pipe outlet and see a burn mark on the top of my piston and my plug is burning black what could be the couses of this
 

70 marlin

Mi. Trail Riders
Joined
Aug 15, 2000
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#2
Do your home work !

1© do a search on top ends and read them all!
2© buy a manual and study that!
3© assemble all the basic hand tools needed for the job©
4© clean bike spotless !!!!
5© go back and clean it even better©
6© repost with some good question from your studies!