Komatsu PC290LC-6K Operation & Maintenance Manual page 138

16. TROUBLESHOOTING
16.5.1 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, always wear
safety glasses.
• 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. If hydrogen gas explodes, it could cause seri-
ous injury.
• Make sure that there is no mistake in the booster cable con-
nections. The final connection is to the revolving frame, but
sparks will be generated when this is done, so connect to a
place as far as possible from the battery. (However, avoid con-
necting the cable to the work equipment, as conduction is
poor.)
• Use care when removing the cables from the machine that has
been started. Do not allow the cable ends to contact each
other or the machine, to avoid hydrogen explosion.
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.
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WARNING