Tachometer: Testing and Inspection
INSPECT TACHOMETERa. Check the operation.
1. Connect a tune-up test tachometer, and start the engine.
NOTE:
- Reversing the connection of the tachometer will damage the transistors and the diodes inside.
- When removing or installing the tachometer, be careful not to drop it or give it heavy shocks.
2. Compare the test with the tachometer indications.
DC 13.5 V, 25°C at (77°F)