BODY ELECTRICAL SYSTEM – COMBINATION METER
BE–47
TACHOMETER INSPECTION
INSPECT TACHOMETER
ON–VEHICLE
(a) Connect a tune–up test tachometer, and start the engine.
NOTICE: Reversing the connection of the tachometer
will damage the transistors and diodes inside.
(b) Compare the tester and tachometer indications.
If error is excessive, replace the tachometer.
RPM (DC 13.5 V, 25˚C (77˚F))
Standard indication (rpm) Allowable range (rpm)
700 630–770
1000 915–1115
2000 1920–2220
3000 2890–3350
4000 3940–4400
5000 5025–5425
6500 6650–6950
7000 7025–7625