I have 1997 model Kawasaki 4s champion (100cc 4 stroke bike). It have no tachometer . is it possible to install new tachometer on my bike. can anyone give some advise ?. thanks in advance
You can install an external tachometer that reads your wheel speed. There's one on Amazon for Kawasaki for $19USD.
Some clamp onto a spark plug wire, others are 2 piece, where one small piece clamps onto your wheel, and the other clamps onto a fork and measures the wheel RPM - but those are more for bicycles, not motorcycles (where you'd like engine RPM - not wheel RPM).
Good luck! You can find more articles and forum posts by Googling "External Motorcycle Tachometer"