Engine - Yamaha EF3000iSE New Model Manual

I Handling precautions
If you continue to charge the battery for many hours, the temperature of the electrolyte will rise and battery
performance may deteriorate.
Handling procedures vary with the type of battery.
1. Remove the cords and tubes from the battery and then remove the battery.
2. Measure the specific gravity of the battery.
9 Remove the plugs from the battery and check the
electrolyte level. If it is near the lower limit
(LOWER), supply distilled water until the level
reaches the higher limit (UPPER).
9 Be sure to supply distilled water. Use of the tap
water would result in a reduced service life of the
battery.
9 Measure the specific gravity of the electrolyte
with a hydrometer.
9 Measure the specific gravity in about every hour.
Make sure the reset is not turned off. (The battery
is considered to be fully charged when the spe-
cific gravity is 1.26-1.28.)
9 Measure the specific gravity for each cell.
3. Connect the charging cord across the battery and DC
outlet. Start the engine to charge the battery.
When charging, set the economy control switch
at OFF.
To connect the cord, do in the order of the numbers
shown in the illustration. To remove the cord,
reverse the connecting order.
Q WARNING:
Make sure of the polarity,
cord. If you connect it in the wrong polarity, short-
circuit could result. A flammable gas occurring from
the battery may explode. The alternator and/or bat-
tery may also fail.
4. On completion of charging, stop the engine and remove the charging cord in the reverse order of installing
it.
+ -
and , of the charging
Hydrometer
– 13 –
Electrolyte
Upper level
Lower level
Charging cord
3
1
2