Checking Generator Brushes; Battery Maintenance - Miller Big Blue Duo Pro 700 X Owner's Manual

8-3.

Checking Generator Brushes

8-4.

Battery Maintenance

Lead acid batteries discharge when stored in any temperature. Units that are stored should have the battery recharged every three months and
before being put into service. To preserve optimum battery performance and life, recharge battery in storage when the open-circuit voltage drops
to 12.4 volts DC when measured across the battery terminals.
OM-282302 Page 56
Stop engine and let cool.
1 Generator Brush
2 Minimum Length: 5/8 in. (16 mm)
3 New Length: 1–1/4 in. (32 mm)
4 Damaged Brush
Mark and disconnect leads at brushholder
cap. Remove brushes.
Replace brushes if damaged or if brush ma-
terial is at or near minimum length.