hallo

i have 2 vespa gs3 from germany, one vs3 engine (type 112) and one vs5 engine (type 212).

Both engines came with the same carburator main jet : 108 (firend of mine got a gs150 from germany with one main jet 108 too...)

is it normal, what is the normal size ? 103, 105 or 108?

i saw italian gs 150 came with main jet 103 and 105 (for the last engine). on scooter help, and in a german manual

than you for your help

Alan

I did drive my gs/3 with a 105 mainjet

i know people who drive their GS150 with a 98 or 102 main jet

i bought last year one carburator for gs 150 and he came with a 98 .

So what is the best main jet for one stock gs3 type 112 and one 212?