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Old November 4th, 2021, 05:58 AM   #20
Triple Jim
Guy Who Enjoys Riding
 
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Name: Jim
Location: North Carolina
Join Date: Jul 2016

Motorcycle(s): Ninja 250

Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
When I got my '07 a few years ago, it had a stumbling, burbling low-midrange, right around cruise throttle. I shimmed the needles 1/2mm and that cured the problem. Then when Ducatiman rebuilt the carbs he removed the shims and the engine ran much better all around.

The shims fixed the lean midrange. Cleaning and restoration cured the need for shims.
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