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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Crf250R Jetting.
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[QUOTE="DieselDick, post: 1480169, member: 146614"] Bought a bike off a kid, the motor was a fresh rebuild. As far as I can tell, the motor is fine. What I discovered when buying the bike is that it has a super high idle, but flattens out when riding in gear. Therefore, I suspect the carburetor. Upon removal of the carb I found a few things. 1. "Plugged" off hot start (Hole in the "Plug" letting air through. Covered hole, reinstalled. No joy. 2. Really odd jetting for where I live. Slow jet 45, Leak jet 42, Choke 68, Main 195. Where everybody rides around here nothing goes past 5,000ft in elevation. Which is why I am confused about the 195 main. From what I can tell, I should have a 172 Main installed as per Honda's spec sheet. Should I re - jet to standard? The bike has a Yoshi exhaust but I don't think that would warrant a 195 main. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Crf250R Jetting.
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