Fuel tap -101 OCTANE- vacuum - for Aprilia, Malaguti, MBK, Yamaha

Vacuum controlled fuel tap for 50cc to 150cc Aprilia, Yamaha, MBK and Malaguti scooters.
Malfunctions in the fuel tap can lead to starting difficulties and engine misfires.
The diaphragm hangs and releases the fuel no more or only insufficiently.
The only solution is a complete replacement.