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New Carb
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Put a Koso 32mm on runs and idles good but bogs out completely from 0-25 % Throttle. I don't know what to do. 



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lift the needle.... play with the air screw...
what jets are you running ??

Is it a Power jet Koso carb ?





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-- Edited by petenz on Friday 28th of October 2016 05:41:41 AM

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If the carb is new and the seller said it would fit a TTR then maybe go back to them for jetting advice?

If you search the forum for Koso there are a few threads that might contain some help.

Brian



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A rough check would be try a bit of choke if it's worse it's too rich if it's better it's lean . Let us know how it goes 

 



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Check for air leaks first!!!!

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Thanks guys I haven't got to it yet but will very soon.



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