Keihi PWK Jetting


Can anyone give me some advice re jetting a PWK Keihin to suit a Vespa with a DR 177 kit?




never used in this configuration.
Considering you don’t specify anything I guess it is just bolt on, I would start with:
Main: 120 (spare 122 and 118
slow: 42 (spare 40)
Needle: JJH
needle clip : 2nd position from top
cut slide: 3.5

then tell us how do you find it.

PS: while you are there try a Polini 177 head with. It will give you some improvement.