R
PORTABLE GASOLINE
GENERATORS
OWNER’S OPERATION AND INSTALLATION MANUAL
Generator Models: MGR2900, MGR4500I, and MGR6000I
IMPORTANT: Read and understand this manual before operating or servicing generator. Improper use of generator can cause serious injury. Keep this
manual for future reference.
R
PORTABLE GASOLINE GENERATORS
SAFETY
INFORMATION
WARNINGS
IMPORTANT: Read this owner’s
manual and the engine owner’s
manual carefully. Become familiar
with this generator before trying
to operate or service it. Know
its uses, limitations, and any
hazards involved. Improper use
of generator can cause severe
injury or death from explosion,
fire, burns, electrical shock, or
carbon monoxide poisoning.
DANGER: Carbon monoxide
poisoning may lead to death!
Engine exhaust contains poisonous carbon
monoxide gas. Overexposure will cause loss
of consciousness and will lead to death. Use
only in well-vented areas. Make sure area
has plenty of free-moving, fresh, outside
air. Never run generator in an enclosed or
confined area. Never run generator inside
occupied building.
Carbon Monoxide Poisoning: Early
signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness,
and nausea. If you have these signs, get
fresh air at once! Some people are more
affected by carbon monoxide than others.
These include pregnant women, persons
with heart or lung disease or anemia,
those under the influence of alcohol, and
those at high altitudes. Make certain
you read and understand all warnings.
Keep this manual for reference. It is your
guide to safe and proper operation of this
generator.
Safety information appears throughout these
instructions. Pay close attention to them.
Below are definitions for the safety information listed throughout this manual.
DANGER: indicates a hazard which will
cause severe personal injury, death, or
substantial property damage if you ignore
warning.
WARNING: indicates a hazard which can
cause severe personal injury, death, or
substantial property damage if you ignore
warning.
CAUTION: indicates a hazard which will or
can cause minor personal injury or property
damage if you ignore warning.
1. Gasoline presents a hazard of fire or
explosion. Gasoline is flammable. Its
vapor is explosive.
• Keep fuel out of children’s reach.
• Refuel generator in a well-vented
area. Do not fill fuel tank in the dark.
Do not refuel while engine is running. Unhook all electrical loads and
shut off engine before refueling.
• Do not overfill fuel tank. Always allow room for fuel to expand. If you
overfill tank, fuel can overflow onto
hot generator. This can cause fire or
explosion. After refueling, tightly
close fuel tank cap.
• Do not spill fuel. Fuel or fuel vapor
may ignite. If fuel spills, make sure
area is dry before starting engine.
• Never smoke in refueling area. Never
allow open flames or sparks in area.
• Store fuel in approved container.
Store fuel in a well-vented area free
of open flames or sparks.
2. Guard against fire hazard. Keep operation area well-vented. Keep generator at
least three feet away from any object.
Do not place flammable objects near
generator.
• Do not use generator where flammable vapors are present. Some
vapors are heavier than air. These
vapors settle in low-lying places.
• Do not use generator in enclosed
spaces. This includes motor home or
RV generator compartments.
3. Guard against electric shock. Generator
produces high voltage. This high voltage
can cause severe electric shock. Only
responsible adults should use generator.
• Properly ground generator before
starting.
• Never let anyone operate or service
generator without proper instructions.
• Avoid contact with live terminals or
bare wires.
• Do not use generator outdoors in rain
or snow.
• Do not use generator near standing
water or snow.
• Do not use if generator is wet or
damp.
2
4.
5.
6.
7.
8.
• Do not use generator in highly conductive areas. These areas include
metal decking and steelwork.
• Only use grounded extension cords.
• Do not use any worn or damaged
electric cords. Electric shock or damage to generator may result.
• Do not wear damp clothing or wet
shoes when using generator.
Guard against burns. Hot engine parts
can cause severe injury. Use caution
and remain alert when using generator.
• Keep children and animals away from
generator while it is running or hot.
• Keep all covers and shields in place.
Keep them tightly secured.
• The muffler becomes very hot during operation. The muffler remains
hot for a while after shutdown. Do
not touch muffler while it is hot.
Do not let muffler touch anything
flammable. Let engine cool before
transporting or storing.
Have standby installation to home
or building performed by a licensed
electrician. Do not let anyone else wire
into a utility circuit. Personal injury,
equipment damage, or damage to home
could occur.
Never connect generator to any existing
electrical circuits. The generator output
will back-feed into the utility power line.
This may electrocute a power company
line repair person. Also, if generator is
powering electrical circuits, the chance
of an electrical fire exists.
Battery gives off explosive gases. Keep
sparks, flames, and cigarettes away. Do
not remove or install battery cables
when engine is cranking or running.
Only service or use battery in a wellvented area.
Battery contains sulfuric acid. Battery
acid is poisonous if swallowed. Contact
with skin or eyes may cause severe
burns. Do not tilt generator with battery
installed. Tilting could cause battery
acid to spill. Wear protective clothing
and face shield when servicing. Keep
out of children’s reach.
114716
OWNER’S MANUAL
SAFETY
INFORMATION
Continued
9.
13.
14.
114716
F
12.
Gas Cap/Fuel Gauge
E
11.
Gas Tank
EL
FU
10.
Only a qualified electrical service person
should service and repair generator.
• Generator produces high voltage.
Use extreme caution when working
on electrical parts.
• Always remove spark plug wire from
spark plug before servicing. This will
prevent accidental starting.
• When working on generator, avoid hot
muffler, exhaust manifold, and engine
parts. Severe burns may occur.
• Do not work on generator when
tired.
• Use only factory approved replacement parts.
Store generator in a well-vented area.
Make sure fuel tank is empty. Never
store with fuel in tank. Vapors may
reach an open flame or spark. Fire or
explosion may result.
Never operate generator
• if engine speed changes greatly
• if engine misfires often
• if powered items overheat
• if electrical output drops
• if it is sparking
• if it produces smoke or flames
• if it vibrates at high levels
• if it has a damaged receptacle
Keep generator and nearby areas
clean.
• Keep generator free of oil, mud, and
other foreign matter.
• Remove anything that creates slippery areas around generator.
• Remove oily rags and other items
that create fire hazards.
• Keep a fire extinguisher nearby.
Make sure it is rated ABC by the
NFPA. They are good for all uses.
Consult your local fire department.
• Keep fire extinguisher well maintained. Be familiar with its use.
Know how to stop engine quickly.
Know how to use all controls.
Prolonged exposure to loud noise can
cause hearing loss.
• When working around generator,
wear approved hearing protection.
• Remember neighbors when using
generator.
PRODUCT
IDENTIFICATION
120 Volt
Receptacle
(Duplex)
Ground Bolt
120 Volt
Receptacle
0V K
12 OC
ISTL
TW
0V
12
120/240 Volt
Receptacle
0V
12 I
GFC
T
SE
RE
ST
TE
0V
0/24 CK
12 TLO
IS
TW
E
AG
LT
VO
ER
MET
UR
HO
M
EN 05
00
00 1/10
00
HO
UR
S
0
12
LY
ON
0
12
+
0
24
R
CTO
LE
SE
LE
-ID
TO
AU
ET
RES
ON
ET
RES
OFF
ET
RES
120 Volt Receptacle (GFCI)
Voltage
Selector Switch
ET
RES
Hour Meter
Auto-Idle Switch
Circuit Breaker
Control Panel
Roll Cage
Choke
Lever
Fuel Valve
Lever
Starter Grip
Engine
Oil Dipstick
Engine ON/
OFF Switch
Figure 1 - Portable Generator (Model MGR4500I Shown)
3
R
PORTABLE GASOLINE GENERATORS
GENERAL
INFORMATION
Master portable generators are rugged and
compact. These generators use brushless
alternators for dependable, trouble-free
service. Robin’s gasoline engines provide
long life under heavy use. These engines are
governed to maintain engine speed of 3600
RPM under load. 3600 RPM engine speed
provides 120/240V, 60 Hz power.
Additional Features
•
•
•
•
•
Circuit breaker protection
Spark-arresting muffler
Large fuel tank
Oil alert system
15-Amp ground fault circuit interrupter
(GFCI) receptacle
VENTILATION
DANGER: Use only in wellvented areas. Make sure area
has plenty of free-moving, fresh,
outside air. Never run generator
in an enclosed or confined area.
Never run generator inside occupied building. Engine exhaust
contains poisonous carbon
monoxide gas. Overexposure will
cause loss of consciousness and
will lead to death.
This generator needs cooling air to run properly. Never block free-flowing, cooling air
to generator. Overheating will occur without
cooling air. This will damage the generator.
Keep generator at least three feet away from
any object.
UNPACKING
1.
2.
3.
Remove generator from carton.
Remove any protective packaging applied to generator for shipment.
Check for loose or missing parts. Check
for shipping damage. If any parts are
missing or damaged, please contact our
Technical Service Department at 1-800858-8501 (English Only).
DUST, DIRT, RAIN,
AND SNOW
WARNING: Do not use generator outdoors in rain or snow. Do
not use generator near standing
water or snow. Do not use if generator is wet or damp. Operating
generator in these conditions
increases the risk of electrocution. Severe injury or death can
occur.
Do not use generator in extremely dusty or
dirty conditions. This will severely affect its
life. Keep generator clean. Do not allow dust,
dirt, rain, or snow to collect on it. Protect
generator from outdoor elements.
HIGH AND LOW
TEMPERATURE
OPERATION
Air temperature affects generator output.
Output drops 1% for each 10° temperature rise
above 60° F. Very low temperatures may make
the engine hard to start. See engine owner’s
manual for more information.
4
114716
OWNER’S MANUAL
SPECIFICATIONS
MODEL
MGR2900
MGR4500I
MGR6000I
2500
4500
6000
20.8
––
37.5
18.8
50
25
––
Yes
––
––
––
Yes
Yes
30 Amp
20 Amp
Yes
Yes
Yes
30 Amp
30 Amp
Yes
6
EX170-D52010
Gasoline
3.9 qt.
Yes
Recoil
85.5
9
EX270-0638T
Gasoline
8 gal.
Yes
Recoil
135
11.5
EH360-0644T
Gasoline
8 gal.
Yes
Recoil
165
Electrical
Rated Wattage
Rated Amperage
120 V
240 V
Receptacle
120-V, 20-A Duplex
120-V, 15-A GFCI
120-V Twist-Lock
120/240-V Twist-Lock
120-V Voltage Selector Switch
General
Robin Engine H.P.
Robin Model
Fuel Type
Fuel Tank Capacity
Oil Alert System
Start Method
Weight (pounds)
* Single-phase, 1.0 power factor
114716
5
Note: Ratings apply to SAE standard
conditions. Reduce ratings 3 1/2% for
each 1000 feet above sea level and 1% for
each 10° Fahrenheit rise above 60°F.
R
PORTABLE GASOLINE GENERATORS
GENERATOR
FEATURES
OIL ALERT SYSTEM
The oil alert system protects the engine from
low oil damage. This system automatically
shuts down the engine and prevents engine
restarting if the oil level falls too low.
Note: When this happens, the engine switch
remains in the ON position. The oil alert
system is wired into the ON/OFF Switch.
If this system shuts down the engine, the
engine will not start until you add oil. Add
oil to engine (see Engine Oil, page 7).
Note: Operate generator on a level surface.
If not level, the oil may flow away from the
oil level sensing device. This will cause the
oil alert system to shut down engine.
See engine owner’s manual for more
information.
ENGINE SW
ON
OFF
Figure 2 - Engine Switch Location
VOLTAGE SELECTOR
SWITCH
GROUND FAULT CIRCUIT
INTERRUPTER RECEPTACLE
All models except MGR2900 have a voltage
selector switch on the control panel. The
switch has two positions: 120 VOLT ONLY,
and 120 + 240 VOLT.
120 VOLT ONLY: This position sends full
power to the 120V receptacles only. 240V
power is not available. Use this position
when powering 120V items only.
120 + 240 VOLT: This position sends full
power to the 120/240V receptacle. It also
powers the 120V receptacles at reduced
wattage capacity.
IMPORTANT: Do not move the voltage selector switch while powering electrical items.
Unplug all items before moving switch. Failure
to do so can damage switch. Model MGR2900
does not have this switch. This model provides
full power to all receptacles.
All models have a 120-volt ground fault
circuit interrupter (GFCI) receptacle. The
GFCI receptacle is on the control panel or top
cover of alternator (MGR2900). The GFCI
protects you against hazardous electrical
shock caused when your body becomes a
path through which electricity travels to
reach ground. This could happen when
you touch an appliance or cord that is ‘live’
through faulty mechanism, damp or worn
insulation, etc.
VOLTAGE
VOLTAGE
120v
+
240v
120v
ONLY
120v
+
240v
120v
ONLY
Selector
Selector
120 VOLT ONLY
Position
120 + 240 VOLT
Position
Figure 3 - Voltage Selector Switch
When protected by the GFCI, you may still
feel a shock, but the GFCI should cut it off
quickly. A person in normal health should
not receive serious injury. Note: Infants and
very small children may still be affected.
Test Procedure
Check the GFCI receptacle every month.
This insures it is working right.
1. Push TEST button. RESET button should
pop out. This should trip GFCI, resulting in no electrical power at receptacle.
Verify this by plugging test lamp with
good bulb into receptacle. If lamp does
not work, GFCI receptacle is good.
WARNING: If RESET button
does not pop out, do not use the
GFCI receptacle. Contact a qualified electrician for repairs.
AUTO-IDLE SYSTEM
(Except Model MGR2900)
The Auto-Idle System allows the engine to idle
down or run at a slower speed when the generator is not being used to supply power. The
Auto-idle system can be turned ON or OFF by
a rocker switch on the control panel. When the
switch is in the OFF position, the engine runs
at full speed all of the time. When the switch
is in the ON position, the engine slows down
to idle speed until an electrical load is applied.
When a load is applied to the generator (an
electrical item is plugged in and turned on) the
engine speeds up to the preset speed required
to produce the correct voltage.
IMPORTANT: A minimum current load
of 1 Amp is required to disengage the auto
idle solenoid and cause the engine to come
up to speed for correct voltage. Powering
items at reduced engine speed will damage
generator and powered items.
2.
If the GFCI receptacle tests okay,
restore power by pushing the RESET
button back in. The test lamp should
work at this time. IMPORTANT: You
must press the RESET button firmly
and fully. It should lock into place. If
the GFCI does not lock into place, do
not use receptacle. Contact a qualified
electrician for repairs.
RE
SE
TE T
ST
Figure 4 - GFCI Receptacle
6
114716
OWNER’S MANUAL
GENERATOR
FEATURES
Continued
RECEPTACLE CIRCUIT
BREAKER
The circuit breakers protect the receptacles
and alternator. Overloading generator will
trip circuit breaker. A short circuit in item
being powered will also trip breaker. If this
occurs, unplug electrical load from receptacle. Let circuit breaker cool down. Push
circuit breaker button to reset.
Electric motors need higher starting current.
They require up to three-times their rated
wattage to start. The starting current needed
may be too high. This can cause nuisance
circuit breaker tripping. To help prevent this,
start electric motors first. Connect additional
items to generator after starting motors. If
this continues to happen, reduce the total
generator load.
Note: High ambient temperature will cause
nuisance tripping.
Normal
20
Tripped
ENGINE OIL
FUEL
We ship the generator without oil in the
engine crankcase. You must add oil before
starting engine. See engine owner’s manual
for specific oil type.
CHECKING OIL LEVEL AND
ADDING OIL
Follow steps below to check oil level. Make
sure engine is level and stopped.
1. Remove dipstick (see Figure 6). Wipe
dipstick clean.
2. Insert dipstick into oil filler neck. Do
not screw it in. Oil level should be at
top of filler neck. Oil should cover most
of dipstick.
3. If level is low, fill to top of oil filler neck
(see Figure 6). Only use oil recommended in engine owner’s manual.
Note: If oil level is too low, oil alert system
will shutdown engine and prevent engine
from restarting.
20
Oil Level
At Top Of
Filler Neck
Tripped
Figure 5Normal
- Receptacle Circuit
Breaker
Button
Dipstick
Oil
Figure 6 - Checking Oil Level (Model
MGR4500I Shown)
WARNING: Gasoline presents
a hazard of fire or explosion.
Gasoline is flammable. Its vapor
is explosive.
• Keep fuel out of children’s
reach.
• Refuel generator in a wellvented area. Do not fill fuel tank
in the dark. Do not refuel while
engine is running. Unhook all
electrical loads and shut off
engine before refueling.
• Do not overfill fuel tank. Always
allow room for fuel to expand.
If you overfill tank, fuel can
overflow onto hot engine. This
can cause fire or explosion.
After refueling, tightly close
fuel tank cap.
• Do not spill fuel. Fuel or fuel
vapor may ignite. If fuel spills,
make sure area is dry before
starting engine.
• Never smoke in refueling area.
Never allow open flames or
sparks in area.
• Store fuel in approved container.
Store fuel in a well-vented area
free of open flames or sparks.
Use clean, fresh, unleaded gasoline. Use
gasoline with octane rating of 86 or higher.
Service station gasoline pumps should display the octane rating. Using gasoline with
lower octane level could damage engine.
Avoid getting dirt, dust, or water in fuel
tank. Do not mix oil with gasoline.
See engine owner’s manual for more
information.
114716
7
R
E
FU
PORTABLE GASOLINE GENERATORS
L
E
F
EXTENSION
CORDS
5.
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
Ampere
Load
2
3
4
5
6
8
10
12
14
16
20
AWG for Length of
Cord in Feet
50'
100'
150'
18
18
16
16
16
16
16
14
14
12
10
18
18
16
16
16
14
14
14
12
12
10
18
18
16
16
14
12
12
12
10
10
8
GENERATOR
GROUNDING
You must supply the ground wire and grounding point. These do not come with generator.
Follow the National Electrical Code and all
state and local codes. Consult your power
company or a licensed electrician.
WARNING: For a grounding
point, do not use metal pipe being used to carry combustible
materials or gases.
Flat Washer
IMPORTANT: This generator will not
0V K your entire home. Most home utility
power
12 LOC
IST
TW
electric
service is more than 60 amps. This
will exceed generator output. Only power
needed items during a power outage. Make
sure total wattage of electrical load does not
exceed rated wattage of generator.
0V
12
SEMS Nut
Ground Bolt
Spade
Connector
R
TE
ME
UR
HO
M
EN 05
00
00 1/10
00
Detail A
U
HO
RS
0
12 Y
L
ON
0
12
+
0
24
OR
CT
LE
SE
EL
E
F
LE
-ID
TO
AU
E
AG
LT
VO
ON
T
SE
RE
F
OF
T
SE
RE
T
SE
RE
0V
12 LOCK
IST
TW
Ground
Wire
0V
12
0V
12 CI
GF
T
SE
RE
ST
TE
UR
HO
HO
URS
You may need to use this generator as a
standby power source. During a power outV
age,
40 the generator will power selected items
0/2 CK
12 TLO
IS
in
TW a building. Have generator and additional
wiring installed by a skilled, licensed electrician. This is not a do-it-yourself job. Follow
all local codes.
WARNING: The electrician
must
install a double-throw
T
SE
REtransfer switch. This isolates existing electrical circuits from the
utility power line. If not isolated,
generator output will back-feed
into utility power line. This may
electrocute a power company line
repair person.
V
40
0/2 CK
12 LO
IST
TW
R
TE
ME
M
EN 05
000
1/10
000
Grounding generator helps prevent electric
shock from a ground fault condition. Follow
these steps to ground your generator:
1. Locate ground bolt on generator housing (see Figure 7).
2. Loosen SEM nut on ground bolt. Note:
Do not remove SEM nut from bolt.
3. Attach a spade connector to the end of
a #10-8 stranded-copper ground wire.
4. Attach spade connector to ground bolt
between flat washer and SEM nut (see
Detail A in Figure 7).
WARNING: Have standby installation performed by a skilled,
licensed electrician. Do not let
anyone else wire into a utility
circuit. Personal injury, equipment damage, or damage to home
could occur.
FU
WARNING: You must properly earth-ground generator before starting. This will help guard
against deadly electric shock. Only
use grounded plugs with generator. Only use grounded extension
cords. Only use three-wire or
double-insulated power tools.
6.
STANDBY
INSTALLATION
TO HOME OR
BUILDING
Drive grounding point into ground.
Note: Grounding point can be a stake,
grounding rod, or pipe. Grounding
point should be copper or brass.
Attach ground wire to grounding point.
E
AG
LT
VO
0
12
LY
ON
0
12
+
0
24
OR
CT
LE
SE
LE
-ID
TO
AU
T
SE
RE
ON
T
SE
RE
F
OF
T
SE
RE
T
SE
RE
Alternator
Copper or Brass
Grounding Point
Figure 7 - Grounding Generator (Model
MGR4500I Shown)
8
114716
OWNER’S MANUAL
DETERMINING
ELECTRICAL LOAD
FOR GENERATOR
You must decide what electrical load your
generator can power. Do this before using generator. Use the following four-step
method. It will help you select a load that
is not too large. Make sure total wattage of
all electrical loads does not exceed rated
wattage of generator. For rated wattage of
your generator, see Specifications, page 5.
Electric motors present a special problem
when figuring load. Read Step 3 carefully.
1. Make two lists of items you want powered by generator. List all motors and
motor powered appliances in one. List all
lights, small appliances, etc. in the other.
For standby service to home or building,
only include items you must power.
2. Enter running watts of each item except
motors. The light bulb or appliance
nameplate lists its wattage. Remember, 1KW = 1000 watts. Note: The
nameplate may not list wattage. It may
only list volts and amps. The formula
for finding wattage is: Volts x Amps
= Watts. For example: An appliance
nameplate states 3 amps at 120 volts.
3 amps x 120 volts = 360 watts.
3.
Electric motors present a special problem. They require up to three-times
their rated wattage to start. Chart 2, below, shows starting watts for different
size motors. For example: an electric
motor nameplate states 5 amps at 120
volts. 5 amps x 120 volts = 600 watts
running. Multiply this figure by 3. This
will show the starting watts needed. 600
watts x 3 = 1800 watts to start. When
figuring the generator load for motors,
you must use the starting watts figure.
Do not use the running watts figure.
4.
Note: Some motors require nearly the
same wattage to run as to start. These
items include saws, drills, hair dryers,
and food mixers. See Chart 1 for typical
appliance wattage examples.
Add watts and starting watts of all
items. This total must not be larger than
the rated wattage of your generator.
It is a good idea to have up to 25%
extra capacity for future needs or extra
equipment.
Chart 1 - Typical Electric Appliance Wattages
Equipment
Light bulb (100W)
Radio
Fan
Television
Furnace fan (1/3 hp)
with blower
Vacuum cleaner
Sump pump (1/3 hp)
Refrigerator/freezer
6" Circular saw
Floodlight
Running
Watts
Starting
Watts
100
150
200
400
100
150
600
400
600
600
700
800
800
1000
1800
750
2100
2400
1000
1000
Equipment
1/2" Drill
Toaster
Coffee maker
Skillet
14" Chain saw
Water well pump
(1/2 hp)
Hot plate/range
(per burner)
10" Table saw
Water heater
(storage-type)
Running
Watts
Starting
Watts
1000
1200
1200
1200
1200
1250
1200
1200
1200
1500
1000
3000
1500
2000
1500
6000
5000
5000
Chart 2
Approximate Starting Watts*
Motor
HP
Rating
Approximate
Running
Watts
Universal
Motors
(small appliance)
Repulsion
Induction
Motors
Capacitor
Motors
Split
Phase
Motors
1/8
1/4
1/3
1/2
3/4
1
1 1/2
2
3
500
700
800
1100
1400
1700
2100
2450
3600
625
875
1000
1375
1750
2125
2625
3075
x
1100
1550
1750
2400
3100
3750
4620
5400
7900
1500
2100
2400
3300
4200
5100
6300
7350
10800
2250
3150
3600
4950
x
x
x
x
x
* – Always use starting watts, not running watts, when figuring correct electrical load.
x – Motors of higher horsepower are not generally used.
114716
9
R
PORTABLE GASOLINE GENERATORS
OPERATION
GENERAL INFORMATION
This generator is not large enough to power
your entire home. Do not connect generator
to any existing electrical circuits. Plug items
directly into generator receptacles. Do not
exceed amperage rating of receptacles. Only
use grounded cords.
DANGER: Use only in wellvented areas. Make sure area
has plenty of free-moving, fresh,
outside air. Never run generator
in an enclosed or confined area.
Never run generator inside occupied building. Engine exhaust
contains poisonous carbon
monoxide gas. Overexposure will
cause loss of consciousness and
will lead to death.
DANGER: Never connect generator to any existing electrical
circuits. The generator output will
back-feed into the utility power
line. This may electrocute a power
company line repair person. Also,
if generator is powering electrical
circuits, the chance of an electrical fire exists.
Note: We supply the engine owner’s manual
with generator. Refer to that manual for questions concerning engine operation.
USING RECEPTACLE
Note: Do not exceed amperage rating of
receptacles. Exceeding rating will trip receptacle circuit breaker.
Use receptacles properly. Improper use could
damage generator. Use only grounded extension cords. Power only grounded or doubleinsulated items. Do not overload receptacles.
All generators (except model MGR2900) have
the following receptacles (see Figure 8):
• 120V, 15-amp GFCI duplex receptacle
• 120V, 30-amp twist-lock receptacle
• 120/240V, 20 or 30-amp twist-lock
receptacle
• 120V, 20-amp duplex receptacle
POWER CORD AND PLUG
REQUIREMENTS
120V, 30-amp twist-lock receptacle
• NEMA L5-30P plug
• Three-wire, 30-amp cord
120/240V, 20 or 30-amp twist-lock
receptacle
• NEMA L14-20P (20-amp) or L14-30P
(30-amp) plug
• Four-wire, 20-amp or 30-amp cord
Model MGR2900 uses only the 120V, 15amp GFCI duplex receptacle.
120V, 15-Amp GFCI Duplex
120V, 20-Amp Duplex
120V, 30-Amp Twist-Lock
12
0
GF V
CI
12
0V
RE
SE
TE T
ST
TW 120
IST V
LO
CK
HO
UR
ME
TE
R
EN
00 M
00
00
HO
05
UR
S
1/1
0
AU
TO
-ID
LE
OF
F
ON
12
ON 0
LY
VO
LTA
GE
SE
LE
CT
OR
12
0
+
24
0
1
TW20/24
IST 0V
LO
CK
Figure 9 - Cord and Plug Configurations
RE
SE
T
RE
SE
T
RE
SE
T
RE
SE
T
120/240V, 20 or 30-Amp
Twist-Lock
Figure 8 - Receptacle Locations
10
114716
OWNER’S MANUAL
OPERATION
4.
Continued
PRESTART
Operate generator on a firm, dry, and clean
surface. The surface must be level. Protect
generator from heavy dust, sand, dirt, rain,
or snow. Do not locate generator near
standing water and snow. Make sure area
is well-vented.
WARNING: Only responsible
adults should use generator.
Never let anyone operate generator without proper instructions.
Note: If oil level is too low, oil alert system
will keep engine from starting (see Oil Alert
System, page 6). Make sure oil level is full
before starting. See Engine Oil, page 7.
5.
Start the engine.
Turn engine switch to the ON position
(see Figure 12). Remove slack from
starter rope by lightly pulling starter
grip. Next, pull starter rope briskly.
IMPORTANT: Do not let starter grip
snap back against engine. Return it gently. This will prevent damage to starter.
Note: If engine does not start, check
the oil in the crankcase. Add oil as
necessary. Be sure engine is on a level
surface. See Oil Alert System, page 6.
As engine warms up, slowly move choke
lever fully to the right (see Figure 13)
(all models except MGR6000I). This
opens the choke. On Model MGR6000I,
slowly push in choke button until fully
depressed (see Figure 14).
Choke Lever (Closed Position)
ENGINE SW
ON
OFF
Figure 12 - Engine Switch In ON Position
Choke Lever (Open Position)
CLOSED
OPEN
Before starting the engine, disconnect all
electric loads from generator.
Fuel Valve Lever (ON Position)
STARTING
IMPORTANT: The engine speed is preset.
The throttle is locked in preset position. Do
not adjust throttle. Preset position lets engine
run at 3600 RPM under load. The engine
must maintain 3600 RPM for generator to
create correct voltage. Running engine at
lower speeds will damage generator and
powered items.
IMPORTANT: Never start generator with
electrical loads connected. Start engine
before adding electrical loads.
1. Make sure gasoline tank is full. See
Fuel, page 7 for fuel information.
2. Move fuel valve lever to the ON position except on Model MGR6000I (see
Figure 10).
3. Move choke lever fully to the left for all
models except MGR6000I (see Figure
10). Pull choke button out for Model
MGR6000I (see Figure 11). This closes
the choke.
Note: You may not need to close choke
if engine is warm or air temperature is
high.
Figure 13 - Choke Lever Opened (Model
MGR4500I Shown)
Choke Lever (Open Position)
CLOSED
OPEN
Fuel Valve Lever (ON Position)
Figure 10 - Fuel Valve Lever On, Choke
Lever Closed (Model MGR4500I Shown)
Choke Lever (Closed Position)
Figure 14 - Choke Lever Opened (Model
MGR6000I Shown)
Figure 11 - Choke Lever Closed (Model
MGR6000I Shown)
Continued
114716
11
E
F
R
PORTABLE GASOLINE GENERATORS
OPERATION
Continued
AUTO-IDLE OPERATION
IMPORTANT: Never start engine with electrical loads connected. Start engine before
adding electrical loads.
1. If engine is cold, turn the Auto-Idle
switch OFF (see Figure 15).
2. Start engine. Allow engine to warm up
with no load for five minutes.
3. Turn Auto-Idle switch ON. Engine will
slow to idle speed. Engine idle speed
is preset. Idle speed adjustment should
not be necessary.
4. Operate generator according to specifications outlined in owner's manual.
5. Engine will automatically increase to
normal operating speed when you plug
load into any generator outlet.
6. The Auto-Idle system should be turned
OFF when generator is shut down.
Adjusting the Idle Speed
(Models MGR4500I and
MGR6000I)
WARNING: Always set the idle
speed before turning on the AutoIdle. If idle speed is not set, the
larger resistor on the control board
may become hot. Heat from the
resistor may damage the protective
coating on the control board.
2.
4.
12
0V
RE
SE
TE T
ST
TW 120
IST V
LO
CK
HO
UR
ME
TE
R
EN
M
00
00
00
HO
05
UR
S
1/1
0
AU
TO
-ID
LE
5.
12
ON 0
LY
OF
F
VO
LTA
GE
SE
LE
CT
OR
ON
12
0
+
24
0
1
TW20/24
IST 0V
LO
CK
RE
SE
Auto-Idle Switch
T
6.
7.
RE
T
Figure 15 - ControlSEPanel
RE
SE
T
RE
SE
T
M10 Bolts
IMPORTANT: Adjust the idle speed only:
• If the idle speed becomes too high.
• If the engine idle speed will not regulate
(engine wants to “hunt” or speeds up and
slows down repeatedly).
1. Turn Auto-Idle switch OFF. Start engine. Allow engine to warm up with
no load for five minutes.
3.
12
0
GF V
CI
Solenoid Mounting
Bracket
Loosen the two m10 bolts mounting the
solenoid to the engine (see Figures 16
and 17).
Connect a volt meter to the 120-volt
duplex receptacle.
Fully push plunger into the solenoid
body (to manually engage solenoid)
and slowly slide solenoid back until
the engine is running at the proper
idle speed. At proper idle speed (2800
minimum RPM), the meter should read
45-55 Volts. Lower settings will cause
the Auto-Idle to not operate properly.
After reaching proper idle speed,
tighten M10 bolts to secure solenoid.
Turn Auto-Idle switch ON. Make sure
solenoid is engaged. When engaged, the
punger is pulled back into the solenoid.
If the engine speed is too slow, the
engine will want to “hunt” or speed
up and slow down repeatedly. When
this occurs, increase engine speed by
adjusting the throttle (refer to engines
operation in Engine Manual).
12
Solenoid
Figure 16 - Solenoid Bracket Location,
Model MGR4500I
Solenoid Mounting
Bracket
M10 Bolts
Solenoid
Figure 17 - Solenoid Bracket Location,
Model MGR6000I
114716
OWNER’S MANUAL
OPERATION
Continued
HIGH ALTITUDE OPERATION
This generator will not perform well at high
altitudes without proper adjustment. See
engine owner’s manual for details.
ADDING ELECTRICAL
LOADS
IMPORTANT: Do not overload generator.
Make sure total wattage of all electrical loads
does not exceed rated wattage of generator.
Overloading may shorten generator life. It
could also cause internal damage to generator. Overloading will trip circuit breaker.
IMPORTANT: (All models except
MGR2900) Keep voltage selector switch
in the 120 VOLT ONLY position if only
powering 120V items. Only move switch
to 120 + 240 VOLT position if powering
240V items.
1. Check items to be powered. Their
nameplate lists their wattage ratings.
Note: The wattage ratings for some
electrical motors are misleading. They
may require up to three-times their
rated wattage to start. You must figure
total electrical load wattage. Make sure
total wattage of all electrical loads does
not exceed rated wattage of generator.
See Determining Electrical Load For
Generator, page 9.
2. Start engine. Let engine reach full
speed.
3. Connect electrical loads one at a time.
If the load consists of electric motors,
start them first. Always start the largest
first. Start each motor individually.
DISCONNECTING ELECTRIC
LOADS
Remove electrical loads one at a time. Remove voltage sensitive items first. Voltage
sensitive items include TVs, VCRs, and
other home electronic items.
114716
STOPPING ENGINE
IMPORTANT: The engine speed is preset.
The throttle is locked in preset position. Do
not adjust throttle.
Follow the steps below to stop engine.
1. Remove all electrical loads from generator (see Disconnecting Electrical Loads).
Remove electrical loads one at a time.
2. Let engine run for two or three minutes
after removing electrical loads. This
lets engine cool slightly.
3. Turn engine switch to the OFF position
(see Figure 18).
4. Turn fuel valve lever off except on Model
MGR6000I. Do this by moving valve
lever fully to the left (see Figure 19).
ENGINE SW
ON
OFF
Figure 18 - Engine Switch In OFF
Position
MAINTENANCE
AND REPAIRS
WARNING: Only a qualified
electrical service person should
service and repair the alternator
on this generator. Use only factory
approved replacement parts.
CAUTION: The engine speed
is preset. The throttle is locked
in preset position. Do not adjust
throttle. Preset position lets engine run at 3600 RPM under load.
The engine must maintain 3600
RPM for generator to create correct voltage. Running engine at
lower speeds will damage generator and powered items.
CAUTION: Shut off generator
before performing maintenance.
IMPORTANT: Keep generator level when
servicing. Never turn generator upside down
or stand it on end to service.
Note: We supply the engine owner’s manual
with generator. Refer to that manual for
questions concerning engine maintenance
and repairs.
Non-engine parts require little maintenance.
Keep generator clean. Use a damp cloth to
clean outside surfaces. Never use water to
clean generator. Water can cause damage to
internal parts. Use vacuum to clean air inlet
and outlet louvers of alternator.
CLOSED
OPEN
Fuel Valve Lever
(Off Position)
Figure 19 - Fuel Valve Lever Off (Model
MGR4500I Shown)
13
R
PORTABLE GASOLINE GENERATORS
STORAGE
WARNING: Remove all fuel from
fuel tank before storing generator.
Store fuel in approved container.
Store fuel in a well-vented area free
of open flames or sparks.
WARNING: The muffler becomes very hot during operation.
The muffler remains hot for a
while after shutdown. Let engine
cool before storing.
IMPORTANT: Keep generator level while in
storage. Never store generator upside down
or standing on end.
Note: We supply the engine owner’s manual
with generator. Refer to that manual for
questions concerning engine storage.
Use a fuel additive, such as STA-BIL® or an
equivalent, when storing generator with fuel
in fuel tank. This will minimize fuel gum
deposits from forming in engine.
Cover and store generator in a clean, dry
place. Do not expose generator to extreme
high or low temperatures during storage.
SERVICING THE
ENGINE
Robin parts and services should be handled
by your nearest authorized engine service
firm. Visit:
www.robinamerica.com
or call Robin direct:
1-800-277-6246
TROUBLESHOOTING
Note: For additional help, visit DESA
Specialty Products’™ technical service
web site at www.desatech.com.
TECHNICAL
SERVICE
You may have further questions about assembling, operating, or maintaining this
product. If so, you can visit our Technical
Service web site at www.desatech.com or
contact our Technical Service Department
at 1-800-858-8501 (English Only). You may
also write to:
DESA Specialty Products™
ATTN: Technical Service Specialty Products
P.O. Box 90004
Bowling Green, KY 42102-9004
When contacting DESA Specialty Products™, have ready
• Your Name
• Your Address
• Your Phone Number
• Model Number of Product
• Serial Number
• Date of Purchase (Include copy of receipt
for written requests).
WARNING: Only a qualified electrical service person should service
and repair generator. Use only factory approved replacement parts.
Note: See engine owner’s manual for engine troubleshooting.
OBSERVED PROBLEM
POSSIBLE CAUSE
REMEDY
No voltage when starting generator with no
electrical load
1. Loss of residual magnetism
1. Apply 12-volt battery to capacitor terminals for 2-3 seconds
2. Check resistance of coils (see Electrical
Component Specifications, page 15)
3. Replace both diodes on rotor
4. Replace capacitor
Voltage is less than normal voltage with no
electrical load
2. Winding s hort circuit or loos e
connections
3. Defective rotor diode
4. Defective capacitor
1. Engine speed too low
2. Defective rotor diode
3. Partial short circuit in winding
4. Defective capacitor
1. Set engine speed to 3800 RPM (63 Hz)
with no load
2. Replace both diodes on rotor
3. Check resistance of coils (see Electrical
Component Specifications, page 15)
4. Replace capacitor
Voltmeter reading more than 10% high with
no electrical load
1. Engine speed too high
1. Set engine speed to 3800 RPM (63 Hz)
with no load
Voltmeter reading correct with no electrical
load, but more than 10% low when electrical
load is added
1. Defective rotor diode
2. Electrical load too high
3. Engine not running properly
1. Replace both diodes on rotor
2. Do not overload generator
3. Contact an authorized engine service
center
www.desatech.com
14
114716
OWNER’S MANUAL
ELECTRICAL
COMPONENT
SPECIFICATIONS
Resistance in Ohms
Stator
Stator
Rotor
Rotor
Capacitor,
Main
Auxiliary
Primary Secondary
MFD
Winding * Winding ‡ Winding † Winding †
450 Volt
Model
MGR2900
MGR4500I
MGR6000I
1.6
0.835
0.741
5.9
1.852
1.582
6.9
4.91
5.55
1.33
—
—
Diodes (2)
1000 Volt
16
40
40
6 Amp
8 Amp
8 Amp
* Connect T2 (green) and T3 (black). Measure resistance between T1 (red) and T4 (yellow).
‡ Resistance between brown and white leads.
† Remove diodes to check resistance.
WIRING DIAGRAMS
Stator
Black
L1
T2
110/120V
L1
Rotor
L2
L2
C
T1
Green
Yellow
L2
L1
Auxiliary
Phase
Brown
T2
Circuit
Breaker
T4
Stator
White
D
20A
Main
T4 Windings
T3
Red Black
Yellow
Yellow
T3
Black
T1
Figure 20 - Wiring Diagram, Model MGR2900
114716
LINE
Black
15
HOT
WHITE
GFCI
Receptacle
120V/15A
R
PORTABLE GASOLINE GENERATORS
WIRING DIAGRAMS
Continued
Stator
T1
T2
T3
T4
220/240V
L1
110/120V
Black
Black
L2
White
110/120V
120V, 30A
Receptacle
Stator
Brown
Red
White
120V, 20A
Receptacle
120V, 15A
Receptacle
Duplex
GFCI
Capacitor
White
Green/Yellow
Diode
Red
Red
White
Black
T3
T4
T3
Green/
Yellow
T2
Green
Blk
120/240V
20A/30A
Receptacle
Main
Windings
T1
Red
T1
Red
T4
Blue
Wht
LINE
Grn/
Ylw
Grn/
Ylw
Rotor
Diode
Grn/
Ylw
Wht
Auxiliary
Phase
HOT
Wht
WHITE
White
T2
Full Pwr
Selector
Switch
Blk
White
White
Black
Green
Circuit
Breaker
25A/30A
Black
Red
Circuit
Breaker
25A/30A
Circuit
Breaker
20A
Circuit
Breaker
20A
Red
Green/
Yellow
Blue
Auto-Idle
Wht
Black
T2
Wht
Hour
Meter
Black
White
White
Red
Green/
Yellow
Yellow
s1 s2
Yellow
White
Green/Yellow
White
To Solenoid
To Alternator
Ground
To Roll Cage
Figure 21 - Wiring Diagram, Models MGR4500I and MGR6000I
16
114716
OWNER’S MANUAL
ILLUSTRATED
PARTS LIST
1
7
For Model MGR2900 Alternator
Assembly
2
This list contains replaceable parts used in
your generator. When ordering parts, follow
the instructions listed under Replacement
Parts on page 23 of this manual.
4
22
5
6
3
20
13
15
14
21
19
17
16
7
8
13
15
12
9
7
18
10
11
7
KEY
NO.
PART
NUMBER
1
2
099722-02
100074-01
100445-01
3
4
5
6
7
8
9
10
11
12
13
22616009
27002002S
‡
**
099701-01
099848-01
17587000
099891-01
099861-01
099842-01
‡
DESCRIPTION
Alternator Assembly*
Top Cover
120V, 15A Duplex (GFCI)
Receptacle †
Circuit Breaker, 20 Amp †
Capacitor
Screw, M4 x 20
Terminal Block
Screw, M5 x 13
End Plate
Ground Lug
Flanged Nut, 8mm
Bottom Cover
Draw Bolt
Screw, M6 x 16
KEY
NO.
QTY.
14
15
16
17
18
19
20
21
22
1
1
1
1
1
1
13
1
1
1
1
1
4
27001005S
WLE-4
**
27001002
27001009S
**
27001006
26327006
WLE-5
DESCRIPTION
Engine Flange
Lock Washer, 1/4"
Stator
Bearing
Diode
Rotor
Fan
Bolt, 5/16-24 x 5/8"
Lock Washer, 5/16"
QTY.
1
4
1
1
2
1
1
4
4
PARTS AVAILABLE - NOT SHOWN
099866-03
099866-04
099867-02
† Includes fastening hardware.
* Includes reference numbers 1 through 22.
** Parts not available. Included in alternator assembly.
‡ Available at any hardware store.
114716
PART
NUMBER
17
Safety Information Decal
Safety Information Decal
Operation Decal
1
1
1
R
PORTABLE GASOLINE GENERATORS
ILLUSTRATED
PARTS LIST
1
2
For Models MGR4500I and
MGR6000I Alternator Assembly
This list contains replaceable parts used in
your generator. When ordering parts, follow
the instructions listed under Replacement
Parts on page 23 of this manual.
3
5
6
7
12
11
13
16
10
8
9
15
17
14
PART NUMBER FOR MODEL
KEY
NO. MGR4500I
MGR6000I
DESCRIPTION
114285-01
115243-01
M10908-27
115244-01
115247-01
115246-01
115245-01
*
115255-01
115308-01
WLE-5
115315-01
115316-01
*
115317-01
**
**
115242-01
114285-02
115243-01
M10908-27
115244-01
115247-01
115246-01
115245-01
*
115255-01
115308-01
WLE-5
115315-01
115316-01
*
115317-01
**
**
115242-01
Alternator Assembly
Top Cover, Alternator
Screw, 10-32 x 1/2"
End Cover, Alternator
End Cap, Shaft
Flange Nut, 8mm
Draw Bolt, Alternator
Stator, Alternator
Capacitor
Hex Head Taptite, 8mm Screw
Lock Washer, 5/16"
Bearing
Diode
Rotor, Alternator
Fan
Bolt, 3/8"-16 x 5/8"
Lock Washer, 3/8"
Flange, Alternator
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
QTY.
1
1
4
1
1
1
1
1
1
4
4
1
2
1
1
4
4
1
* Part not available by itself. Must purchase Alternator Assembly.
** Available at any hardware store.
18
114716
4
OWNER’S MANUAL
ILLUSTRATED
PARTS LIST
1
For Model MGR2900 Roll Cage
This list contains replaceable parts used in
your generator. When ordering parts, follow
the instructions listed under Replacement
Parts on page 23 of this manual.
2
3
2
3
3
2
4
5
2
6
2
3
KEY
NO.
PART
NUMBER
DESCRIPTION
1
2
3
4
5
6
114673-01
NEC-5C
103289-02
*
WLE-5
115388-01
Roll Cage
Lock Nut, 5/16-18
Shock Mount
Bolt, 5/16-18 x 1/2"
Lock Washer, 5/16"
Grounding Strap
* Available at any hardware store.
114716
19
QTY.
1
5
3
1
1
1
R
PORTABLE GASOLINE GENERATORS
ILLUSTRATED
PARTS LIST
For Models MGR4500I and
MGR6000I Fuel Tank and
Roll Cage
1
EL
FU
E
F
10
9
SA
FE
TY
INF
OR
MA
TIO
N
2
3
4
Un
lead
ed
Gas
olin
eO
nly
7
15
6
16
5
17
15
16
8
15
14
17
12
13
12
11
13
16
15
10
18
0V K
12 OC
ISTL
TW
0V
12
0V
12 I
GFC
T
SE
RE
ST
TE
0V
0/24 CK
12 TLO
IS
TW
R
TE
ME
UR
HO
M
EN 05
00
00 1/10
00
HO
UR
S
E
AG
LT
VO
0
12
LY
ON
0
12
+
0
24
R
CTO
LE
SE
LE
-ID
TO
AU
T
SE
RE
ON
T
SE
RE
OFF
T
SE
RE
T
SE
RE
20
114716
OWNER’S MANUAL
ILLUSTRATED
PARTS LIST
This list contains replaceable parts used in your generator. When ordering parts, follow the
instructions listed under Replacement Parts on page 23 of this manual.
For Models MGR4500I and
MGR6000I
Fuel Tank and Roll Cage
KEY
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
PART NUMBER FOR MODEL
MGR4500I
25954002
114720-01
114787-01
WP-4C
19508001
25985009
—
099743-01
114674-01
114714-01
M10908-27
114685-01
*
WLE-5
103289-01
NEC-5C
WP-5C
103289-02
114721-01
MGR6000I
25954002
114720-01
114787-01
WP-4C
19508001
—
25985009
099743-01
114674-01
114714-01
M10908-27
114685-01
*
WLE-5
103289-01
NEC-5C
WP-5C
103289-02
114721-02
DESCRIPTION
Gas Cap/Fuel Gage
Gas Tank (with 90° fitting)
Screw, 1/4"-28 x 3/4"
Washer, 1/4"
Gas Line Clamp
Fuel Line
Fuel Line
Fuel Filter
Roll Cage
Heat Shield
Screw #10-32 x 1/2"
Spacer
Bolt, 5/16"-18 x 1/2"
Lock Washer, 5/16"
Shock Mount
Lock Nut, 5/16"-18
Flat Washer, 5/16"
Shock Mounts
Control Panel
QTY.
1
1
4
4
2
1
2
1
1
1
8
1
2
2
1
4
3
2
1
PARTS AVAILABLE - NOT SHOWN
100003-06
*
*
*
100003-06
*
Operation Decal
5/16"-18 x 1/2" Grounding
Bolt
5/16" Flat Washer
5/16" SEMS Nut
*
*
* Available at any hardware store.
114716
21
1
1
1
1
R
PORTABLE GASOLINE GENERATORS
ILLUSTRATED
PARTS LIST
5
4
3
RE
SE
TE T
ST
For Models MGR4500I and
MGR6000I Control Panel
10
This list contains replaceable parts used in
your generator. When ordering parts, follow
the instructions listed under Replacement
Parts on page 23 of this manual.
14
1
6
11
T1
DESA
12
0
GF V
CI
12
0V
TW 120
IST V
LO
CK
9
2
2
HO
UR
ME
TE
R
7
E
00 NM
00
00
05
HO
UR
S
1/10
AU
TO
-ID
LE
OF
F
13
ON
12
ON 0
LY
8
VO
LTA
GE
SE
LE
CT
OR
12
0
+
24
0
1
TW20/2
IST 40V
LO
CK
7
RE
SE
T
RE
SE
T
RE
SE
T
RE
SE
T
12
KEY
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
†
‡
PART NUMBER FOR MODEL
MGR4500I
MGR6000I
DESCRIPTION
114738-01
22616009
099833-01
104202-01
100445-01
099956-01
22616011
—
099834-01
—
101350-01
099760-02
114722-01
116475-01
100366-01
115404-01
114721-01
114963-01
114738-01
22616009
099833-01
104202-01
100445-01
099956-01
—
22616010
—
099835-01
101350-01
099760-02
114722-01
116475-01
100366-01
115404-01
114721-02
114963-01
Control Panel
Circuit Breaker, 20 Amp *
120V, 30A Twist-Lock Receptacle *
120V, 20A Duplex Receptacle *
120V, 15A Duplex (GFCI) Receptacle *
Voltage Selector Switch *
Circuit Breaker, 25 Amp *
Circuit Breaker, 30 Amp *
120/240V, 20A Twist-Lock Receptacle *
120/240V, 30A Twist-Lock Receptacle *
Hour Meter
Bushing
Enclosure
Plastite Pan Head Screw
Rocker Switch
Auto-Idle Control Board Kit
Control Panel Assembly
Panel Schematic Decal
QTY.
1
2
1
1
1
1
2
2
1
1
1
1
1
6
1
1
1
1
* Includes fastening hardware
‡ Not shown
† Includes reference numbers 1 through 14
22
114716
OWNER’S MANUAL
REPLACEMENT
PARTS AND
ACCESSORIES
For original replacement parts and accessories, contact your nearest Authorized
Dealer or Authorized Service Center for this
product. If they can not supply the part or
accessory, contact your nearest Parts Central
listed below. Each Authorized Dealer, Authorized Service Center, and Parts Central is
independently owned and operated.
See pages 17 through 22 for an Illustrated
Parts List.
If you need additional referral information,
contact our Technical Service Department
(see Technical Service, page 14).
In Canada call 1-800-561-3372 for parts
information.
Heavy-Duty Wheel Kit – PA2022
For Models MGR4500I and
MGR6000I
Wheelbarrow-style wheel kit. Makes generator easy for one person to move.
This kit includes:
• Large 12-inch wheels for easy rolling
• Powder coated tubing and plated hardware for long life
• Long handles with thick grips for greater
comfort and control
Complete installation instructions included.
114716
REPAIR SERVICE
Note: Only use original replacement parts.
This will protect your warranty coverage for
parts replaced under warranty.
Each Authorized Service Center is independently owned and operated.
For additional Service Center or warranty
information, call 1-800-858-8501 or visit
our Technical Service web site at www.
desatech.com.
WARRANTY SERVICE
If product requires warranty service, return it to
nearest Authorized Service Center. You must
show proof of purchase. If faulty materials or
workmanship caused damage, we will repair or
replace product without charge. Note: Normal
wear, misuse, abuse, neglect, or accidental
damage is not covered under warranty.
NON-WARRANTY SERVICE
If product requires service, return it to nearest
Authorized Service Center. Repairs will be
billed to you at regular repair list prices.
PARTS CENTRALS
These Parts Centrals are privately owned
businesses. They have agreed to support
our customer’s needs by providing original
replacement parts and accessories.
Tool & Equipment
5 Manila Drive
Hamden, CT 06514-0322
203-248-7553
1-800-397-7553
Grainger Parts Operations
1657 Shermer Road
Northbrook, IL 60062-5362
708-498-5900
1-800-323-0620
www.grainger.com
Portable Heater Parts
342 North County Road 400 East
Valparaiso, IN 46383-9704
219-462-7441
1-800-362-6951
www.portableheaterparts.com
sales@portableheaterparts.com
techservice@portableheaterparts.com
23
FBD
1349 Adams Street
Bowling Green, KY 42103-3414
270-846-1199
1-800-654-8534
franktalk@aol.com
Master Part Distributors
1251 Mound Avenue NW
Grand Rapids, MI 49504-2672
616-791-0505
1-800-446-1446
www.masterparts.net
Bowden Electric Motor Service
1681 S. Wesleyan Blvd.
Rocky Mount, NC 27803
252-446-4203
East Coast Energy
10 East Route 36
West Long Branch, NJ 07764-1501
1-800-755-8809
Laporte’s
2444 N 5th Street
Hartsville, SC 29550-7704
843-332-0191
MTA Distributors
555 Hickory Hills Blvd.
Nashville, TN 37189-9244
615-299-8777
1-800-264-0225
Industrial Hardware
4109 Bainbridge Blvd.
Chesapeake, VA 23324-1403
757-543-2232
1-800-788-0008
catatem@erols.com
Mills Lawn and Garden
4750-B Baxter Road
Virginia Beach, VA 23462
757-490-7001
www.mills-parts.com
Tuco Industrial Products
5223 180th Street SW
Suite 4A-1
Lynnwood, WA 98037-4506
425-743-9533
1-800-735-1268
www.tucoheat.com
WARRANTY INFORMATION
KEEP THIS WARRANTY
Model
Serial No.
Date Purchased
Always specify model and serial numbers when communicating with the factory.
We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard
written warranty. We make no other warranty, expressed or implied.
FIVE-YEAR LIMITED WARRANTY
GASOLINE PORTABLE GENERATORS
DESA Specialty Products™ makes no warranty with respect to the engine and engine components not of its manufacture. They are subject to warranties of their manufacturers. Robin warrants the engine. See engine owner’s manual for
engine warranty information.
DESA Specialty Products™ warrants each generator, excluding engine, of its manufacture, to be free from defects in
material and workmanship for five years from the date of first purchase from an authorized dealer, provided that the
product has been properly installed, maintained, and operated in accordance with all applicable instructions. The bill
of sale or proof of purchase must be presented at the time a claim is made under this warranty.
This warranty is extended only to the original retail purchaser. This warranty covers only the parts and labor required
to restore this unit to its proper operating condition. Warranty parts must be obtained through factory authorized dealers and service centers for this product. These dealers and service centers will provide original factory replacement
parts. Failure to use original factory replacement parts voids this warranty.
This warranty does not apply to parts that are not in original condition because of normal wear and tear, or parts that
fail or become damaged as a result of misuse, abuse, negligence, accident, lack of proper maintenance, alteration,
modification, tampering, contaminated fuels, repair using improper parts, or repair by anyone other than an authorized
dealer or service center. Routine maintenance is the responsibility of the owner. Travel, handling, transportation, and
incidental costs associated with warranty repairs are not reimbursable under this warranty and are the responsibility of
the owner.
To the full extent allowed by the law of the jurisdiction that governs the sale of the product, this express warranty
excludes any and all other expressed warranties and limits the duration of any and all implied warranties, including warranties of merchantability and fitness for a particular purpose to five years from the date of first purchase, and DESA
Specialty Products’™ liability is hereby limited to the purchase price of the product and DESA Specialty Products™
shall not be liable for any other damages whatsoever including indirect, incidental, or consequential damages.
Some states do not allow limitation of how long an implied warranty lasts or an exclusion or limitation of incidental
or consequential damages, so the above limitation of damages may not apply to you.
This warranty provides the original purchaser with specific rights. For information regarding those rights, please consult the applicable state laws.
Bowling Green, KY 42102-9004
www.desatech.com
114716-01
REV. C
03/05