Cub Cadet 7530 Operator's Manual page 119

GENERAL SERVICE INFORMATION
Alternator Charging System
Follow these general rules to prevent damage to the electrical system:
1. Before working on the electrical system, disconnect the battery cables.
2. Do not make a reverse battery connection.
3. When you use an auxiliary battery for starting, connect positive-to-positive
and negative on the auxiliary battery to the tractor side rail as a ground.
4. When charging the tractor battery, disconnect the battery cables from
the battery terminals. Do not use a battery-charging machine for starting
the tractor.
5. Never operate the tractor when the battery cables are disconnected.
6. When you do maintenance on the engine, prevent foreign material
from entering alternator.
7. If you must do welding, disconnect the battery. Put the welder ground
cable as close as you can to the weld area. Do not put the ground cable
where the current can flow through bearings or along channels with
wire harnesses.
ELECTRICAL SYSTEM
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