Tachometer: Testing and Inspection

INSPECT TACHOMETER
a. Check operation
1) Connect the tune-up test tachometer, and start the engine.

NOTICE:
- Reversing the connection of the tachometer will damage the transistors and the insides of the diodes.
- When removing or installing the tachometer, be careful not to drop or subject it to heavy shocks.




2) Compare the result of the test with the standard indication.
DC 13.5 V, 25°C (77°F)