Product Manual

26 Owner’s Manual for MDG25IF4
Operation
Using a Booster Battery or
Charger (if equipped)
See Figure 3-6. A 12 volt booster battery can be
connected in parallel with battery(ies) on the unit to aid in
cold weather starting. ALWAYS use heavy-duty jumper
cables.
Series:
• Amps = Same as single battery
• Volts = Twice as a single battery
Figure 3-5. Series
Parallel:
• Amps = Twice as a single battery
• Volts = Same as single battery
Figure 3-6. Parallel
1. Connect booster battery or batteries to produce the
required system voltage.
NOTE: To avoid sparks, do not allow the free ends of
jumper cables to touch engine.
2. Connect one end of jumper cable to the POSITIVE
(+) post of the booster battery.
3. Connect the other end of the jumper cable to the
POSITIVE (+) post of battery connected to starter.
4. Connect one end of the other jumper cable to the
NEGATIVE (-) post of the booster battery.
5. Complete the hookup by making the last
connection of the NEGATIVE (-) cable to a good
ground on the engine frame and away from the
battery(ies).
6. Start the engine. Disconnect jumper cables
immediately after engine starts. Always disconnect
NEGATIVE (-) cable first.
Generator Output Connections
(000137a)
WARNING
Explosion. Batteries emit explosive gases while charging.
Keep fire and spark away. Wear protective gear when
working with batteries. Failure to do so could result in
death or serious injury.
(000138a)
WARNING
(000167a)
CAUTION
Equipment damage. Do not make battery
connections in reverse. Doing so will result
in equipment damage.
004507
004508
(000237)
DANGER
Electrical backfeed. Use only approved switchgear to
isolate generator from the normal power source.
Failure to do so will result in death, serious injury,
and equipment damage.
(000157)
DANGER
Electrocution. Do not disable or modify the
connection box door safety switch. Doing so
will result in death or serious injury.