Shop Who we areTerms of sale Withdrawal and PrivacyPick & Pay Customer Service Tel: [phone removed by eBay] [phone removed by eBay] DELLORTO 12539264 EMULSIONER DP264 FOR VHSB 34LD / VHSH 30CS CARBURETOR Partial or half gas load can be achieved when the gas gate valve is 1/4 to 3/4 open. Jet needles and mix tube are competent to regulate the mix in this area. Venturi Tubes Together with the jet needle, the Venturi tube is responsible for regulating the partial load. If the adjustment is too greasy (engine stutters and throttles) and the jet needle is already in the lowest slot, then its time for a small venturi. The rule also applies here: the higher the number, the fatter the Rubè Venturi. In the partial load range with a freshly opened throttle valve the engine should not purr stutter. If it doesn't hic.
eBay