Komatsu D475A-5E0 Operation & Maintenance Manual page 235

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TROUBLESHOOTING
STARTING ENGINE WITH BOOSTER CABLE
When starting the engine with a booster cable, do as follows.
PRECAUTIONS WHEN CONNECTING AND DISCONNECTING BOOSTER CABLE
When connecting the cables, never contact the positive (+) and negative
(-) terminals.
When starting the engine with a booster cable, wear protective
eyeglasses and rubber gloves.
Be careful not to let the normal machine and problem machine contact
each other. This prevents sparks from generating near the battery which
could ignite the hydrogen gas given off by the battery.
Make sure that there is no mistake in the booster cable connections.
The final connection is to the engine block of the problem machine, but
sparks will be generated when this is done, so connect to a place as far
as possible from the battery.
When disconnecting the booster cable, take care not to bring the clips
in contact with each other or with the machine.
NOTICE
The size of the booster cable and clip should be suitable for the battery size.
The battery of the normal machine must be the same capacity as that of the engine to be started.
Check the cables and clips for damage or corrosion.
Make sure that the cables and clips are firmly connected.
Check that the work equipment lock levers and parking brake levers of both machines are in LOCK position.
Check that each lever is in NEUTRAL position.
If the machine is equipped with a battery isolator switch, turn the battery isolator switch to OFF position before connecting the
booster cable. This will prevent damage to the electrical equipment on the problem machine.
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WARNING
OPERATION

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