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Published on Feb 2, 2012
Original Piaggio spare part.Keihin CVK 20mm from a Piaggio Fly 100cc. It is running perfect on my Zip 50 4t (with malossi 70cc kit) as you can see at this video.
Plug n' play modification,it took me 15 minutes to unplug 18mm original Cvk carb and install rhe new one. For best results you have to change internal parts at the big 20mm carb with these from the small 18mm carb,like jet's needle,diaphragm's spring,float bowl,idle jet and electric choke. Keep the main jet 78# fom the big carb.