can anyone tell me what jetting and mix screw settins should beeee
According to Norrie Kerrs Tuning book:
Vespa 100 SHB 19/19 Carb
Main Jet 74
Pilot jet 42
Starter Jet 60
I would set the mixture screw 1 1/2 turns out and see how it goes.
Hope this helps.
[:drink:]