jcb JS300 Service Manual page 24

Obey the procedures below to prevent damage to the
alternator and battery.
– Ensure that the battery negative terminal is
connected to the earthing cable.
– Never make or break connections to the battery or
alternator, or any part of the charging circuit whilst the
engine is running. Disregarding this instruction will
result in damage to the regulator or rectifying diodes.
– Main output cables are 'live' even when the engine is
not running. Take care not to earth connectors in the
moulded plug if it is removed from the alternator.
– When arc welding on the machine, protect the
alternator by removing the moulded plug (or if
separate output cables fitted, remove the cables).
– Follow the correct procedures when jump starting the
engine. Refer to Section 2, Operation, Moving a
Disabled Machine.
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Battery Charging System Precautions
9813-5100-1
Section 1 - General Information
General Procedures
Battery Charging System Precautions
1-19