Vespa 75 cc dellorto 16.10 Speed problem


Does anybody know what size of jets there must be? (Polini 75cc and dellorto 16.10)

Vespa splutters and goes only 30 km/h?




An SHB 16/10 is way too small.
You definitely need a SHB 16/16 + its air filter

The 16/15 is for the PK and not easy to adjust.

hi, i got the 75 ccm DR cylinder. with 16.15 delorto with mainjet 68 + sito plus exhaust v-max +/- 65 km/h