Tachometer: Testing and Inspection

1. Connect a tune-up test tachometer and start the engine.
2. Compare the tester and tachometer indications.
If the difference is excessive, replace the tachometer.






CAUTION:
1. Reversing the connections of the tachometer will damage the transistor and diodes inside.
2. When removing or installing the tachometer, be careful not to drop it or subject it to severe shock.