Master Lock MGH8500IE - Manual (Page 7)

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OWNER’S MANUAL
IMPORTANT: Make sure battery connec-
tions are the correct polarity. Electric start
generators use negative ground, 12-volt DC
starting system.
A battery is not supplied with generator. You
must provide a 12-volt, 32-amp-hour battery.
The positive and negative battery cables are
supplied with generator. You must install
these cables before mounting battery.
Always wear safety glasses when working with
battery. Make sure battery terminals are clean.
Make sure cable connections are tight.
Always shut down engine before removing
or attaching battery cables. Always remove
the negative (–) cable first. Always attach
negative (–) cable last.
CAUTION: If you remove bat-
tery, insulate the red, positive (+)
battery cable terminal. Insulate with
electrical tape. Exposed terminal
may spark when generator runs.
WARNING: Battery contains
sulfuric acid. Contact with skin
or eyes may cause severe burns.
Do not tilt generator with battery
installed. Tilting could cause bat-
tery acid to spill. Wear protective
clothing and face shield when
servicing. Keep out of children’s
reach.
• If battery acid gets on your skin,
wash with water.
• If battery acid gets in your eyes,
flush with water at least 15
minutes. Call a doctor at once.
Battery acid is poisonous.
• If swallowed, drink large
amounts of water or milk. Fol-
low with milk of magnesia or
vegetable oil. Call a doctor at
once.
Figure 9 - Battery Hold-Down System
(Alternator Removed for Clarity)
120 /240 V
TW IST LOC K
120 /240 V
TW IST LOC K
120 V
TW IST LOC K
120 V
GFC I
120 V
HO UR ME TER
AUT O-ID LE
RES ET
RES ET
RES ET
RES ET
OFF
ON
RES ET
TES T
ENM 000 000 05
HO UR S 1/10
E
F
FUEL
Figure 10 - Connecting Positive and
Negative Cables to Battery (Alternator
Removed for Clarity)
MOUNTING BATTERY TO
GENERATOR
1. Secure battery to generator by battery
hold-down system. This system con-
sists of the battery mounting bracket,
hook bolts, and nut (see Figure 9).
To Engine
Block (–)
To Starter Solenoid (+)
Ampere AWG for Length of
Load Cord in Feet
50' 100' 150'
2 18 18 18
3 18 18 18
4 16 16 16
5 16 16 16
6 16 16 14
8 16 14 12
10 16 14 12
12 14 14 12
14 14 12 10
16 12 12 10
20 10 10 8
EXTENSION
CORDS
Only use grounded extension cords. Be sure
to use extension cord with proper wire gauge
size. See chart below.
Recommended Minimum Wire
Gauges (AWG) for Extension
Cords
2. Locate the red, positive (+) battery
cable from starter solenoid. Connect it
to the positive (+) battery terminal (see
Figure 10).
3. Locate the black, negative (–) battery
cable attached to engine block. Connect
it to the negative (–) battery terminal
(see Figure 10).
4. Check battery before starting engine.
Make sure fluid levels are full. Make
sure battery is charged.
See engine owner’s manual for more
information.
INSTALLING BATTERY
CABLES TO ENGINE
1. Attach the red, positive (+) battery
cable to the starter solenoid on engine
(see Figure 7). The starter solenoid is
located directly above the starter.
CAUTION: Do not over tighten
positive terminal on starter so-
lenoid. Positive terminal could
rotate and cut into negative ter-
minal, causing a short.
2. Attach the black, negative (–) battery cable
to the engine block. Use the bolt, nut, and
two washers provided with the battery
cables. Use long mounting hole on oppo-
site side of engine from starter solenoid.
Attach cable as shown in Figure 8.
120 /240 V
TW IST LOC K
120 /240 V
TW IST LOC K
120 V
TW IST LOC K
120 V
GFC I
120 V
HO UR ME TER
AUT O-ID LE
RES ET
RES ET
RES ET
RES ET OFF
ON
RES ET TES T
ENM 000 000 05
HO UR S 1/10
E
F
FUEL
Battery Mounting
Bracket
Battery
Hook Bolt
Nut
BATTERY
Continued
Starter
Solenoid
Figure 7 - Connecting Red, Positive (+)
Battery Cable to Engine Starter Solenoid
Figure 8 - Connecting Black, Negative (-)
Battery Cable to Engine Block
Red, Positive (+)
Battery Cable
Black,
Negative (–)
Battery Cable