Tachometer not working.

[JohanP]

Hi,

My tachometer is not showing rpms but the 4 red control lamps lights up when I turn the key.
What do I have to do to make the rpm work again?
Engine 2005 df225

/Johan P

[artdf175]

Johan
on the back of the tach there can be a slide type switch that is or can be used for different inputs
slide it side to side and be sure to put it back in original position.
see if that corrects your problem
Art