The most often ridiculed part of the Lambretta, even among enthusiasts, is the speedometer. Often it doesn’t work at all or, if it does, the needle swipes to and fro like a windscreen wiper.
Though the speedometer unit can sometimes be to blame, more often the fault will lie with the cable drive. The system is straightforward, with a handful of components, but when problems occur they can be awkward to solve.
The best way to look at fault finding is to break it down by the two major components and ensure they both work correctly.
1. The drive
The problem with the speedometer drive is that to gain access it’s necessary to take the front hub apart. One way of testing its operation without disassembling the hub is to undo the cable from
