Gidday, does anyone know- does the ring that passes through the slot of the speed sensor pickup need to be "complete" for the sensor to pick up the signal? My speedo and therefore distance functions have stopped registering and it appears the ringwhich has slots cut in it (i guess it is an optical sensor rather than a magnetic one) has bits missing off it but i didnt see any bits lying anywhere, cant figure out how it may have got damaged.
Any advice greatly appreciated.