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How do you tell if bike jetted correctly?

Joined
Nov 14, 2003
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#1
How do you tell if bike jetted correctly?Everything is stock on my yz 125 03 and run it at 25:1
 

Studboy

Thinks he can ride
Joined
Dec 2, 2001
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#2
Does the bike make good power and have good response at all throttle openings? If so, you are close. Read the jetting guide at www.ericgorr.com under the tech article section, it will help you understand jetting much better than I could ever explain it.