Hi there

It may be that the RPM sensor under the front cover needs to be de-gaussed, or in fact faulty.

Try passing a magnet over the device under the cover. Sometimes you can do it from outside, but if you have to open it up, watch all the wiring and tubes are OK when you re-assemble it.

Pass the magnet a couple of times over and around the sensor.

If it still reads wrong then it probably needs a new RPM sensor.

Contact Carlos Villareal at [email protected] he'll have them in stock.