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Everything Dirt Bike
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Yamaha
Yamaha TTR 125 (4T) carb help
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<blockquote data-quote="2smoke" data-source="post: 83674" data-attributes="member: 563"><p>My niece has a TTR 125 that her grandpa purchased for her and set the idle on it. His intentions are good but he really doesnt know what he is doing. So I took her and my boys out for a ride this morning and I noticed that her bike is idling unusually high. So Im poking around and found out the she still had the choke on. But even still her idle is really high. So I bust out the tool kit find my find my fine tip screw driver and start poking around. I'll be damned if there isnt an Idle adjustment on her carb. There is however on the left hand side of the carb what appears to be a fuel screw that controls the air fuel mixture. On the right hand side there appears to me some other type of adjustment screw but I cannot get a good bite on it with the screw driver. So what Im thinking is that the carb needs to be rejetted for our elevation and the air fuel screw needs to be set correctly. My reasoning for this is that the more I turn the air fuel screw in (clockwise) the higher the idle goes untill you basically shut the fuel off. The more turn the screw out (counter clockwise) the lower it gets untill it dies or floods out.</p><p> </p><p>Anyway Im looking for some insight on getting this carb adjusted correctly.</p></blockquote><p></p>
[QUOTE="2smoke, post: 83674, member: 563"] My niece has a TTR 125 that her grandpa purchased for her and set the idle on it. His intentions are good but he really doesnt know what he is doing. So I took her and my boys out for a ride this morning and I noticed that her bike is idling unusually high. So Im poking around and found out the she still had the choke on. But even still her idle is really high. So I bust out the tool kit find my find my fine tip screw driver and start poking around. I'll be damned if there isnt an Idle adjustment on her carb. There is however on the left hand side of the carb what appears to be a fuel screw that controls the air fuel mixture. On the right hand side there appears to me some other type of adjustment screw but I cannot get a good bite on it with the screw driver. So what Im thinking is that the carb needs to be rejetted for our elevation and the air fuel screw needs to be set correctly. My reasoning for this is that the more I turn the air fuel screw in (clockwise) the higher the idle goes untill you basically shut the fuel off. The more turn the screw out (counter clockwise) the lower it gets untill it dies or floods out. Anyway Im looking for some insight on getting this carb adjusted correctly. [/QUOTE]
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Yamaha TTR 125 (4T) carb help
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