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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
250f starting (or lack of)
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[QUOTE="thump chump, post: 136545, member: 23827"] [b]plug read[/b] I would have to start it up and let idle for a little bit to get an accurate plug reading. How can you tell if the carb is too rich, or too lean, on the adjustments that affect the initial opening or the throttle, or even at idle? If it was a two-stroke, I could tell by ear, but I'm not used to working on the four strokes yet. :think I pre-oiled my air filters yesterday to see if that has any effect. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
250f starting (or lack of)
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