Yanmar 4JH45 Operation Manual page 28

PRODUCT OVERVIEW
Indicators and Alarms (Optional)
When a sensor detects a problem during operation, the indicator on the instrument panel
will light and an alarm will sound. Indicators are located on the instrument panel and the
alarms are located on the back of the panel. Under normal operating conditions, the
indicators are off.
Battery Low Charge Indicator
When the alternator output is too low, the indicator will light. When
charging begins, the indicator will turn off.
Coolant High Temperature Indicator and Alarm
When coolant temperature reaches the maximum allowable temperature
(95°C [203°F] or higher), the indicator will light and the alarm will sound.
Continuing operation at temperatures exceeding the maximum limit will
result in damage and seizure. Check the load and troubleshoot the
cooling system.
Engine Oil Low Pressure Indicator and Alarm
When the engine oil pressure falls below normal, the oil pressure sensor
will send a signal to the indicator, causing it to light and the alarm to
sound. Stop operation to avoid damage to the engine. Check the oil level
and troubleshoot the lubrication system.
Water in Sail Drive Seal Indicator and Alarm
When water is detected between the seals of the sail drive, the indicator
will light and the alarm will sound.
Water in Fuel Filter Indicator and Alarm
When the water level in the fuel filter/water separator becomes too high,
the indicator will light and the alarm will sound. Drain the water from the
fuel filter/water separator. See Draining Fuel Filter/Water Separator on
page 69.
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JH Series Operation Manual