some intakes have o-rings, but on this motor i think they use a gasket.
i m amazed they made this thing so that for adjusting the valves you have to drop the motor?
if u can smell fuel, can you see fuel? fuel line could be damaged. should be easy to find...
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1971 Garelli Gulp 50cc with open ports and 16 mm Bing Carbie + 1980 Honda XL
223 ZS + 2007 Zongshen LZX200G + DR400SM