With the engine started, compare the readings of the tester with that of the tachometer. Replace the tachometer if the tolerance is exceeded.
CAUTION:
- Reversing the connections of the tachometer will damage the transistor and diodes inside.
- When removing or installing the tachometer, be careful not to drop it or subject it to severe shock.
REVOLUTION SPECIFICATION CHART
| Revolution (rpm) |
Tolerance (rpm) |
| Max 8000rpm |
| Gasoline |
| 1, 000 |
±100 |
| 2, 000 |
±125 |
| 3, 000 |
±150 |
| 4, 000 |
±170 |
| 5, 000 |
±200 |
| 6, 000 |
±240 |
| 7, 000 |
±260 |
| 8, 000 |
±260 |