Yanmar 3JH4E Operation Manual page 30

PRODUCT OVERVIEW
Figure 16
Battery Low Charge Indicator
(Figure 16) - When the alternator output is
too low, the indicator will light. When
charging begins, the indicator will turn off.
No alarm will sound for low battery charge.
Figure 17
Coolant High Temperature Indicator and
Alarm (Figure 17) - 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.
Figure 18
Engine Oil Low Pressure Indicator and
Alarm (Figure 18) - 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 immediately to avoid
damage to the engine. Check the oil level
and troubleshoot the lubrication system.
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Figure 19
Water in Sail Drive Seal Indicator and Alarm
(Figure 19) - When water is detected
between the seals of the sail drive, the
indicator will light and the alarm will sound.
Figure 20
Water in Fuel Filter Indicator and Alarm (C-
Type only) - 4JH4-TE and 4JH4–HTE
engines only - (Figure 20) - 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 65.
Figure 21
Insufficient Seawater Flow Indicator and
Alarm (C-Type only) (Figure 21).
JH4 Series Operation Manual