Tachometer: Testing and Inspection

Tachometer Inspection:

Connect engine tachometer and compare the engine tachometer and tachometer readings. Replace tachometer if difference is excessive.
Standard value:
Type 1 (8,000 rpm indication)
700 rpm +/- 100rpm
3,000 rpm +/- 150 rpm
5,000 rpm +/- 250rpm

Type 2 (9,000 rpm indication)
700 rpm +/- 100 rpm
3,000 rpm +225/-100 rpm
5,000 rpm +325/-100 rpm

CAUTION:
As the tachometer is negative grounded, do not connect battery conversely to prevent dragging transistor and diode.

Connect the engine tachometer.
1. Insert paper clip into the CRC filter connector (3-pole connector 0.5 W cable).
2. Connect the engine tachometer to the inserted clip.