Yanmar 6LY3 series Service Manual page 272

ELECTRICAL AND ECU
Charging Procedure
1. Check the specific gravity and adjust the
electrolyte level.
2. Disconnect the battery cables.
3. Connect the red clip of the charger
(Figure 12-7, (1)) to the positive (+) battery
terminal and connect the black clip to the
negative (-) terminal.
Figure 12-7
Figure 12-7
1 – Battery Charger
2 – Battery
4. Set the current to 1/10 to 1/5 of the capacity
indicated on the outside of the battery
(Figure 12-7, (2)).
5. Periodically measure the specific gravity during
charging to make sure the specific gravity
remains at a high fixed value. Also check
whether gas is being generated.
12-6
(2)
(1)
0006266
© 2007 Yanmar Marine International
Battery Components and Functions
Charging Precautions
1. Remove the battery caps to vent the gas during
charging.
2. The electrolyte temperature should not exceed
45°C (113°F) during charging.
Figure 12-8
Electrolyte Temperature
Figure 12-8
3. Since an alternator is used on this engine when
charging with a charger, always disconnect the
battery cables to prevent destruction of the
diodes in the alternator.
NOTICE: Disconnect the negative (-) cable first.
6LY3 Service Manual
0006352