Schumacher Automatic SEM-1562A - Manual (Page 7)

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or sheet-metal body parts. Connect to a heavy gauge metal part
of the frame or engine block.
For a positive-grounded vehicle, connect the NEGATIVE 6.6
(BLACK) clip from the battery charger to the NEGATIVE (NEG,
N, -) ungrounded post of the battery. Connect the POSITIVE
(RED) clip to the vehicle chassis or engine block away from the
battery. Do not connect the clip to the carburetor, fuel lines or
sheet-metal body parts. Connect to a heavy gauge metal part of
the frame or engine block.
Connect charger AC supply cord to electrical outlet. 6.7
When disconnecting the charger, turn all switches to off, 6.8
disconnect the AC cord, remove the clip from the vehicle chassis
and then remove the clip from the battery terminal.
See CALCULATING CHARGE TIME for length of charge 6.9
information.
FOLLOW THESE STEPS WHEN BATTERY iS OUTSidE 7.
VEHiCLE
A SPARK NEAR THE BATTERY MAY
CAUSE A BATTERY EXPLOSiON.
TO REdUCE THE RiSK OF A SPARK
NEAR THE BATTERY:
Check the polarity of the 7.1
battery posts. The POSITIVE (POS, P, +) battery post usually
has a larger diameter than the NEGATIVE (NEG, N, -) post.
Attach at least a 24-inch (61 cm) long 6-gauge (AWG) insulated 7.2
battery cable to the NEGATIVE (NEG, N, -) battery post.
Connect the POSITIVE (RED) charger clip to the POSITIVE 7.3
(POS, P, +) post of the battery.
Position yourself and the free end of the cable you previously 7.4
attached to the NEGATIVE (NEG, N, -) battery post as far away
from the battery as possible – then connect the NEGATIVE
(BLACK) charger clip to the free end of the cable.
Do not face the battery when making the final connection. 7.5
Connect charger AC supply cord to electrical outlet. 7.6
When disconnecting the charger, always do so in the reverse 7.7
order of the connecting procedure and break the first connection
while as far away from the battery as practical.