YSN 28BS 28mm carburettor type PHBH with manual lever choke. Among others, suitable for Vespa Classic vehicles such as Vespa PX, PE as well as Gilera Runner 125 FX (1997, 1999-2003) and Gilera Runner 180 FXR (1997, 1999-2003) (ZAPM07000, ZAPM08000).
- Engine side connection: 36mm
- Air filter side connection: 42mm thread
- Main jet: M6 #105
- Idle jet: M5 #55
- Choke jet: M5 #70
- Float: 9010.2 6.5g
- Carburettor slide: 40
- Carburettor needle: X2
- Jet assembly: AV264
