Honda HS1810Z Owner's Manual page 90

BATTERY NEGATIVE ( ) CABLE
NUT
BATTERY
When disconnecting the battery cable, be sure to disconnect at the
battery negative ( ) terminal first. To connect, connect at the battery
positive ( ) terminal first, then at the battery negative ( ) terminal. ＋
Never disconnect the battery cable in the reverse order, or it causes a
short circuit when a tool contacts the terminals.
This symbol on the battery means that this product must not be
treated as household waste.
An improperly disposed of battery can be harmful to the environment
and human health.
Always confirm local regulations for battery disposal.
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BATTERY POSITIVE ( ) CABLE
BATTERY HOLDER
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