Yamaha EF3000iS Owner's Manual page 31

NOTICE
9 Be sure the economy control switch is turned
off while charging the battery.
9 Be sure to connect the red battery charger
lead to the positive (+) battery terminal, and
connect the black lead to the negative (–) bat-
tery terminal. Do not reverse these positions.
9 Connect the battery charger leads to the bat-
tery terminals securely so that they are not
disconnected due to engine vibration or other
disturbances.
9 Charge the battery in the correct procedure by
following instructions in the owner's manual
for the battery.
9 The DC protector turns off automatically if cur-
rent above the rated flows during battery
charging.
To restart charging the battery, turn the DC
protector on by pressing its button to "
(RESET). If the DC protector turns off again,
stop charging the battery immediately and
consult a Yamaha dealer.
TIP
9 Follow instructions in the owner's manual for the
battery to determine the end of battery charging.
9 Measure the specific gravity of electrolyte to
determine if the battery is fully charged. At full
charge, the electrolyte specific gravity is between
1.26 and 1.28.
9 It is advisable to check the specific gravity of the
electrolyte at least once every hour to prevent
overcharging the battery.
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I"