I finally got the overheating issue fixed on my quad (fried radiator fan)...

Now I'd like to figure this speedo issue out. Ideas on what part it could be? What's the usual issue with these (I've seen a bunch with "broken" speedometers)? Do these all go out?

Thanks for the help.

 

9 times out of 10 the speed sensor will go bad. the little pickup,counter deally on the right front hub.
if the speedometer ,trip and odometer are not working then it's the sensor.
there's a test for that, i'll look and see if i can find it