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Pumper carb question
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[QUOTE="allen, post: 26326, member: 21501"] With the carb upside down place the membrane with the labeling faceing upwards. Next the spring then pump housing. Here is a trick that works most of the time. Grind 3/32 of an inch off of the tit on the labled side. This will increase the pump stroke. On my two 520s I have two run two turns out on the air screw with #50 jetting. ------------------ [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
Pumper carb question
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