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04-10
2. CONFIGURATION
1) RPM Gauge
The tachometer indicates engine speed in revolutions per minute. Multiply 1,000 to the current
number, then it will be the current number of engine revolutions.
Under the normal engine operating temperature, the proper idling speed is 700 ~ 800 rpm. The
red zone (danger rpm range) starts from 4,500 rpm.
1.
Connect the tachometer for tune-up test and start the engine.
2.
Eliminate the hysteresis by tapping the tachometer.
3.
Compare the values on the tester and tachometer and replace the tachometer if the tolerance
is excessive.
Check Method
If the tachometer (engine rpm gauge) pointer vibrates or stops moving at a certain range, or
abnormal noises are heard from the tachometer, the tachometer may have a malfunction. If
you have reason to suspect that the reading from the tachometer differs from the actual engine
speed (rpm), connect a diagnostic device and compare the value on tachometer with the
reading from the diagnostic device.
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Troubleshooting
