Scooterotica

Hi, I’ve bought a PHBH carb, it’s a fixed mounted one. I just tried to fit atomiser, and seems to small for screw.Do they come in different size threads. Sorry about this . I know nothing

heres a link to a phbh exploded diagram.
https://www.dellortoshop.com/drawings/d ... rawing.jpg

the atomiser is No.3 or no.4 AS or AV but they are same size thread.
Pilot jets are M4 main jets are M6.

Cheers, I need number 3 . Thanks for help, much appreciated

best place ive found to buy from, price and speed is Wasp performance.

Av range is the usual on Lambrettas , not AS.