If the throttle (carb slide) wasn't opening all the way, there would be a slack on a throttle cable right? In contrary, when the throttle cable would be stretched too much on the throttle, the engine would go fasten on idle. What is more, i don't think that i have a slack on a throttle cable, because it moves from the very moment i move the throttle. How come there is such a difference in top speed when the setup is the same? I changed it to check other setups and now i did the same one. Over one year ago i na a motorcycle workshop they did a setup after which Piaggio Si did 52 km/h: dellorto 12.12 carb, 52 jet, stock air filter, stock exhaust. And i did observe this in two different mopeds - Piaggio Si and Piaggio Bravo. Sometimes when i did screw in or out 1/4 or 1/2 turns, the top speed changed about 4 km/h. It is not imaginary, because i did test drives with Yamaha Myride app in gps mode. Slap this on your motobecane, peugeot, puch, minarelli, garelli, sachs, morini or tomos and forget about it. labwork Carburetor Replacement for Dellorto 14.12mm Sha 14 12 14/12 Mopeds Tomos 2FM-090-047. And what if i put high air flow filter, sport exhaust and a bigger jet? Will those changes improve performance? Maybe just the acceleration and not top speed?Ģ. Dellorto SHA 15.15 Lever Choke Carburetor Authentic Dellorto SHA made in Italy. DJ-Motor Aftermarket 19mm Carburetor Dellorto Style SHA 14mm Carb For Tomos A35 Golden Bullet Targa LX TT Sprint Colibri. > throttle isn't opening all the way, possible i guess.ġ. Your slight improvements via idle screw is imaginary unlesss.your At first the moped did start and drive to about 30 km/h (it did 50 km/h with old dellorto sha 12.12 carb), but with time when i tried to regulate the carb it was worse and.

I tried to regulate it, but with no effect. Running a bigger carb with a smaller intake does not improve Hi, i have a problem with adjusting dellorto sha 13.13 (stock jet 66) in my Piaggio Si moped.

Dellorto sha carb tuning