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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
99 fredette 220 stage 5 running rich?
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[QUOTE="Canadian Dave, post: 133369, member: 16102"] The stock jetting was a 45/145 with the stock 33mm carb. If you have a Fredette modified bike chances are very good your carb has been bored to about 36mm, the same as the KDX200. You'll therefore want to look at KDX200 jetting specs rather than KDX220 jetting specs. A run at WOT with tell you if you main jet is appropriately sized but will do nothing to help determine if the pilot circuit is appropriately tuned or not. From what you are saying it sounds like your main jet is fine. Click on the link below and check out the carb tuning section. You'll find more info there on jetting including fine tuning your pilot circuit. I'm with Jeff, go with a 42 pilot jet and fine tune using you airscrew. You may also need to address you jet needle's clip position as well. Most people will run the stock needle in the second from the top clip position. Do keep your filter clean, there's no point playing with jetting with a dirty filter. David [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
99 fredette 220 stage 5 running rich?
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