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Old 08-22-2008, 01:35 PM
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datz510 datz510 is offline
Motorized Bicycle Elite Member
Join Date: May 2008
Location: Mesa, AZ
Posts: 290
Default Re: Need advice tuning PHBG carby

Found this nice link for tuning the PHBG. Has a very nice chart of the needle sizes available as well as info on getting the engine tuned right to the sweet spot.
How To Tune PHBG Carburetors - MopedWiki
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