TP-6519 8/17 23Section 2 Scheduled Maintenance
Battery gases. Explosion can cause severe injury or
death. Battery gases can cause an explosion. Do not smoke
or permit flames or sparks to occur near a battery at any time,
particularly when it is charging. Do not dispose of a battery in a
fire. To prevent burns and sparks that could cause an
explosion, avoid touching the battery terminals with tools or
other metal objects. Remove all jewelry before servicing the
equipment. Discharge static electricity from your body before
touching batteries by first touching a grounded metal surface
away from the battery. To avoid sparks, do not disturb the
battery charger connections while the battery is charging.
Always turn the battery charger off before disconnecting the
battery connections. Ventilate the compartments containing
batteries to prevent accumulation of explosive gases.
Battery short circuits. Explosion can cause severe injury
or death. Short circuits can cause bodily injury and/or
equipment damage. Disconnect the battery before generator
set installation or maintenance. Remove all jewelry before
servicing the equipment. Use tools with insulated handles.
Remove the negative (--) lead first when disconnecting the
battery. Reconnect the negative (--) lead last when
reconnecting the battery. Never connect the negative (--)
battery cable to the positive (+) connection terminal of the
starter solenoid. Do not test the battery condition by shorting
the terminals together.
This section contains general battery information and
maintenance instructions. Also consult the battery
manufacturer’s instructions for battery maintenance.
All generator set models use a negative ground with a
12-volt engine electrical system. Consult the generator
set nameplate for the engine electrical system voltage.
Consult the generator spec sheet for battery capacity
recommendations for replacement purposes. Wiring
diagrams provide battery connection information. See
Figure 2-10 for typical battery connections.
EZ-273000-J
1
2
1. To positive (+) terminal on starter solenoid.
2. To ground (--) terminal on or near starter motor.
Figure 2-10 12-Volt Engine Electrical System Single
Starter Motor, Typical Battery
Connection
Clean the battery and cables and tighten battery
terminals using the service schedule
recommendations. To prevent corrosion, maintain tight,
dry electrical connections at the battery terminals. To
remove corrosion from battery terminals, disconnect
the cables from the battery and scrub the terminals with
a wire brush. Clean the battery and cables with a
solution of baking soda and water. After cleaning, flush
the battery and cables with clean water and wipe them
with a dry, lint-free cloth.
After reconnecting the battery cables, coat the battery
terminals with petroleum jelly, silicone grease, or other
nonconductive grease.
2.9 Battery Charger
The generator set is equipped with a battery charger to
maintain the engine starting battery. See Section 1.7,
Service Views, for the battery charger location.
The charger’s DC leads are factory-wired. Periodically
tighten all connections. See the generator set operation
manual for battery charger troubleshooting instructions.
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