Magnum MPG 3800C User manual

PORTABLEGENERATOR
MPG 3800 •MPG 3800C
OPERATING/PARTS MANUAL

2
INTRODUCTION
Thismanualprovidesinformationandprocedurestosafelyoperateandmaintaintheportablegenerator. Foryour
ownsafetyand protection from physical injury,carefullyread,understand,andobservethesafety instructions
described in this manual. The information contained in this manual was based on machines in production at the
time of publication. Magnum Products LLC reserves the right to change any portion of this information without
notice.
DO NOT MODIFY or use this equipment for any application other than which it was designed for.
MagnumProductsLLCrecommendsthat atrainedand licensedprofessionalperform allelectricalwiring andtesting
functions. Any wiring should be in compliance with the United States National Electric Code (NEC), state and local
codesand OccupationalSafety andHealthAssociation(OSHA) guidelines.
Keep a copy of this manual with the unit at all times. Additional copies are available from Magnum Products LLC or
can be found at www.m-p-llc.com. An engine operator’s manual was also supplied with the unit at the time of
shipmentfromthefactory. Themanualprovidesdetailedoperation and maintenance procedures for the engine.
Additionalcopiesofthismanualareavailablefromtheenginemanufacturer.
MAGNUM PRODUCTS LLC
215 Power Drive • Berlin, WI 54923
U.S.A.
Phone: [phone]
Fax: [phone]
Toll Free: 1-800-926-9768
www.m-p-llc.com
CALIFORNIA PROPOSITION 65 WARNING:
Engine exhaust and some of its constituents are known to the state
of California to cause cancer, birth defects and other reproductive harm.
WARNING
For technical or parts QUESTIONS, please contact Magnum Products’ Customer Support or
Technical Support team at 920-361-4442. Please have your serial number available.
To ORDER SERVICE PARTS, please contact the dealer from which you purchased the unit,
or call Magnum Products to locate a dealer in your area.
UnitModelNumber:
UnitSerialNumber:

TABLE OF CONTENTS
3
Page
INTRODUCTION ..............................................................................................................................2
TABLEOFCONTENTS ...................................................................................................................3
SAFETYNOTES.............................................................................................................................4
OPERATINGSAFETY.....................................................................................................................4
ENGINESAFETY ...........................................................................................................................5
ELECTRICALSAFETY....................................................................................................................5
UNITSERIALNUMBER LOCATION ................................................................................................6
SAFETYSYMBOL SUMMARY.......................................................................................................6
SPECIFICATIONS ...........................................................................................................................7
COMPONENTLOCATIONS.............................................................................................................8
CONTROLPANELCOMPONENTS.................................................................................................9
GROUNDINGTHEGENERATOR ..................................................................................................10
CONNECTINGELECTRICAL LOADS ............................................................................................10
GFCITESTINSTRUCTIONS .........................................................................................................10
PREVENTIONOFOVERLOAD.....................................................................................................10
WATTAGECONSUMPTIONOFEQUIPMENT............................................................................... 11
USEOF EXTENSIONCORDS ...................................................................................................... 11
EXTENSIONCORDSELECTIONCHART ......................................................................................12
ADDINGENGINEOIL ...................................................................................................................12
ADDINGGASOLINE .....................................................................................................................12
STARTINGTHEENGINE...............................................................................................................13
POWERINGTHELOADS .............................................................................................................13
STOPPINGTHE ENGINE .............................................................................................................14
MAINTENANCESCHEDULE ........................................................................................................15
DAILYMAINTENANCECHECKSANDTIPS .................................................................................15
LIFTINGTHEGENERATOR ..........................................................................................................15
UNITDECALS...............................................................................................................................16
CONTROLPANELASSEMBLY.....................................................................................................17
FRAMEAND FUELTANKASSEMBLY ....................................................................................18-19
ENGINEAND GENERATORASSEMBLY.................................................................................20-21
ACWIRINGDIAGRAM..................................................................................................................22
DCWIRING DIAGRAM..................................................................................................................23

Note: Notescontainadditional information importanttoaprocedureand will befoundwithintheregular
text body of this manual.
4
OPERATING SAFETY
Beforeusingthegeneratorbesureyoureadandunderstandalloftheinstructions! Thisequipmentwas
designedforspecificapplications;DONOTmodifyor use this equipment for any application other than
whichitwasdesignedfor. Equipmentoperatedimproperlyorbyuntrainedpersonnelcanbedangerous!
Readtheoperatinginstructionsandfamiliarizeyourselfwiththe location and proper use of all instruments
andcontrols. Inexperiencedoperatorsshouldreceiveinstructionfromsomeonefamiliarwiththeequip-
mentbeforebeingallowedtooperateorsetupthegenerator. Thefollowingpointsshouldbepracticedat
all times:
•Theareaimmediatelysurroundingthegeneratorshouldbedry,clean,andfreeofdebris.
• NEVER startaunit in need of repair.
• NEVERoperateunitonacombustiblesurface.
• NEVER operatethegeneratorifanyofthefollowingconditionsexistduringoperation:
1. Noticeablechangeinenginespeed.
2. Loss of electrical output.
3. Equipmentconnectedtothe generator overheats.
4. Sparkingoccurs.
5. Enginemisfiresorthere is excessive engine/generator vibration.
6. Protectivecoversarelooseormissing.
7. Iftheambientairtemperatureisabove110° F.
This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
Obey all safety messages that follow this symbol to avoid possible injury or death.
ThismanualcontainsDANGERS,WARNINGS,CAUTIONS,NOTICESandNOTESwhichmustbe
followedtopreventthepossibilityofpersonalinjuryordeath,damagetoequipment,orimproperservice.
Thefollowingformatting options willapplywhencallingthe readersattentiontotheDANGERS, WARN-
INGS,CAUTIONS,NOTICESandNOTES.
SAFETY NOTES
NOTICE
Indicatesa hazardoussituationwhich,ifnotavoided,
mayresultin property orequipmentdamage.
DANGER
INDICATESAHAZARDOUSSITUATIONWHICH,IFNOTAVOIDED,
WILLRESULTINDEATHORSERIOUSINJURY.
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION
Indicates a hazardous situation which, if not avoided, may result in minor or moderate injury.

5
ENGINE SAFETY
Internalcombustionenginespresentspecialhazardsduringoperationandfueling! Failuretofollowthe
safetyguidelinesdescribed below could result in severeinjuryordeath. Readand follow all safety
warnings described in the engine operator’s manual. A copy of this manual was supplied with unit when it
wasshippedfrom the factory.
• DO NOT runengineindoors or in an area with poorventilationunlessexhausthosesare used.
Engine exhaust contains carbon monoxide, a deadly, odorless and colorless gas which, if inhaled,
can cause nausea, fainting or death. Make sure engine exhaust cannot seep into closed rooms or
ventilationequipment.
• DO NOT fill fuel tank near an open flame, while smoking, or while engine is running. DO NOT fill tank
inanenclosedareawithpoorventilation.
• DO NOT operate with the fuel tank cap loose or missing.
• DO NOT touch or lean against hot exhaust or engine parts.
• DO NOT clean air filter with gasoline or other types of low flash point solvents.
•Keephands, feetandloose clothingawayfrom movingpartson thegeneratorand engine.
•If equipped, batteries contain sulfuric acid which can cause severe injury or death. Sulfuric acid can
cause eye damage, burn flesh or eat holes in clothing. Protective eye wear and clothing are neces-
sary when working on or around the battery. Always disconnect the NEGATIVE (-) battery cable from
thecorrespondingterminalbeforeperforminganyserviceontheengineorothercomponents.
ELECTRICAL SAFETY
While the engine is running, potentially lethal voltages are present at the outlets located on the control
panel. Failureto follow the safety guidelines describedbelowcould result in severe injuryordeath.
•Onlya qualified andlicensedelectrician should make connectionsto the generator.
• NEVER washtheunitwithanyhighpressurehosesorpowerwashers.
• NEVER allowwatertoaccumulatearoundthebaseoftheunit. Ifwaterispresent,DONOT service!
• NEVER service electrical components if clothing or skin is wet. If the unit is stored outside, check the
engineandgenerator foranymoistureand drytheunitbefore use.
• NEVER start the engine with any of the circuit breakers switched on or with any loads connected to
thecontrolpanel. Seriousgeneratordamage will result.
• ALWAYSdisconnecttheNEGATIVE(-)batterycablefromthecorrespondingterminalbeforeperform-
inganyserviceontheengine, generatororanyother components. RemovetheNEGATIVE(-) battery
cable from the corresponding terminal if the unit is to be stored or transported.

6
Unit ID Tag
215 Power Drive • Berlin, WI 54923
1-800-926-9768
MODEL
SERIAL NUMBER
MPG 5600
000000
120/240 120/240
41.7/20.8 46.7/23.3
kglbs. amb. temp.
rpm hz phase
kW
V
A
CONTINUOUS MAXIMUM
kW
V
A
1 Ø
Refer to the location illustrated at right to find the unit ID
tag. Important information, such as the unit serial
numberandmodel number are found on this tag. Record
the information from this tag, so it is available if the tag is
lost or damaged. When ordering parts or requesting
technical service information, you may be asked to
specifythisinformation.
SAFETY SYMBOL SUMMARY
Thisequipmenthasbeensuppliedwithnumeroussafetyandoperatingdecals. Thesedecalsprovideimportant
operatinginstructionsandwarn of dangers andhazards. Replaceanymissingorhard-to-readdecals and use care
when washing or cleaning the unit. Decal placement and part numbers can be found in the parts section of this
manual. Below is a summary of the intended meanings for the symbols used on the decals.
UNIT SERIAL NUMBER LOCATION
Read and understand the
supplied operator’s manual
before operating unit.
Hot surface(s) nearby.
Fire/explosion hazard; Keep
open flames away from unit.
Unit electrical ground.
Use unleaded gasoline only.
Lift here only.
Asphyxiation hazard; Operate
in well ventilated area.
Dangerous voltage may be
present. Disconnect battery
before servicing.
Check oil level daily.
Two-person lift only.
Safety alert symbol; Used to
alert you to potential personal
injury hazards.
Stop engine before fueling.
G

7
Readthismanualcarefully before attempting to use this generator. The potential for property damage, personal
injury or death exists if this equipment is misused or installed incorrectly. Read all of the manuals included with this
unit. Each manual details specific information regarding items such as set-up, use and service requirements.
MAGNUMMODEL MPG 3800 MPG 3800C
Engine
EngineMake....................................................... Honda .............................................. Honda
EngineModel ...................................................... GX240 .............................................. GX240
Power-netprime*................................................. 7.1 hp (5.3 kW)................................ 7.1 hp (5.3 kW)
FuelConsumption-netprime ............................. 0.68gph(2.57Lph) .......................... 0.68gph(2.57Lph)
Displacement ...................................................... 15in3(242cm3)................................ 15in3(242cm3)
RecoilStart ......................................................... Yes .................................................. Yes
Generator
GeneratorFrequency .......................................... 60 Hz ............................................... 60 Hz
Maximum Output Watts ...................................... 3800 ................................................ 3800
ContinuousOutput Watts.................................... 3400 ................................................ 3400
MaximumAmps .................................................. 32A.................................................. 32A
Electrical
MainCircuitBreaker............................................ 16Amp-2 pole.................................. 16Amp-2pole
Voltage(Receptacles) ......................................... 120/240V ......................................... 120/240V
120V, 20ADuplex - qty........................................ 2 ...................................................... 2
120/240, 20ATwist Lock - qty ............................. 1 ...................................................... 1
120/240, 30ATwist Lock - qty ............................. 1 ...................................................... 1
Capacities
FuelTank ............................................................ 6.6 gal. (25 L)................................... 6.6 gal. (25 L)
ApproximateRuntime......................................... 9.7hours.......................................... 9.7hours
Weights and Dimensions
DryWeight.......................................................... 185 lbs. (84 kg) ................................ 185 lbs. (84 kg)
OperatingWeight ................................................ 226 lbs. (103 kg) .............................. 226 lbs. (103 kg)
Dry Weight, w/Wheel Kit Option.......................... 212 lbs. (96 kg)................................ 212 lbs. (96 kg)
Operating Weight,w/WheelKit Option ................ 253 lbs. (115 kg) .............................. 253 lbs. (115 kg)
Dimensions (L x W x H) ...................................... 36.8 x 21.4 x 21.5 in. ....................... 36.8 x 21.4 x 21.5 in.
934.7 x 543.6 x 546.1 mm ............... 934.7 x 543.6 x 546.1 mm
Dimensions, Wheel Kit Option (L x W x H) ......... 36.8 x 27.0 x 27.0 in. ....................... 36.8 x 27.0 x 27.0 in.
934.7 x 686.0 x 686.0 mm ............... 934.7 x 686.0 x 686.0 mm
* The power rating of the engine indicated in this document is the net power output tested on a production engine for
the engine model and measured in accordance with SAE J1349 at 3600 rpm. Mass production engines may vary
fromthisvalue. Actual power output for the engine installedin the final machine willvarydependingonnumerous
factors,includingtheoperatingspeedoftheengine in application, environmental conditions, maintenance, and other
variables.
SPECIFICATIONSARESUBJECTTOCHANGEWITHOUTNOTICE.
SPECIFICATIONS

FUEL TANK
CAP
FUEL LEVEL
GAUGE
FUEL SHUT
OFF VALVE
(UNDER TANK)
RECOIL
STARTER
CONTROL
PANEL
ENGINE
STARTING
BATTERY
BATTERY
TRAY
(OPTIONAL)
ENGINE
EXHAUST
WHEEL KIT
(OPTIONAL)
HANDLE -
WHEEL KIT
(OPTIONAL)
CENTRAL
LIFTING EYE
A
IR FILTER
HOUSING
ENGINE CHOKE
(UNDER TANK)
COMPONENT LOCATIONS
8

GROUND FAULT
SENSING MODULE
WARNING
TEST BEFORE EACH USE
SEE INSTRUCTIONS
RESET
RESET
P
O
W
E
R
F
A
U
L
T
ABCDE
FG H
MPG 3800
CONTROL PANEL COMPONENTS
A. ENGINE START SWITCH: This switch must be in the ON position to start the engine. To stop the engine,
place switch in OFF position.
B. AUTO IDLE SWITCH: When this switch is engaged, the engine speed will return to idle whenever the
generatorisnotunderload.
C. VOLTAGE SWITCH: This switch changes voltage on the L14-30Routletfrom120V to 240V.
D. MAIN CIRCUIT BREAKER: This unit containsa 16Acircuit breaker.
E. GFCI TEST MODULE: This module is the ground fault circuit interrupter to protect all electrical outlets.
F. 120/240V TWIST-LOCK CONVENIENCE OUTLET: ThisL14-30Routletisusedtoconnectadditionalloadsor
equipmenttothegenerator.
G. 120V TWIST-LOCK CONVENIENCE OUTLET: This L5-30R outlet is used to connect additional loadsor
equipmenttothegenerator.
H. 120V DUPLEX CONVENIENCE OUTLETS: These 120V outlets are usedtoconnectadditionalloadsor
equipmenttothegenerator.
9

GROUND SOURCE
LOCATION
GROUNDING THE GENERATOR
PREVENTION OF OVERLOAD
Exceeding wattage capacity can result in damage to the generator and to the connected electrical devices. Adhere
tothefollowingtoprevent exceeding wattage capacities:
• Calculate the total wattage of all electrical devices to be connected at one time to the generator.
• ThetotalshouldNOT begreater than the generator’swattagecapacity.
• Thewattagefrom various devices can be foundonthedevice’s data plate or decal. See the Wattage
Consumptionof Equipment section on page 11 for a listingofdevices and their running watts.
• Ifyou cannot locate the running wattageforadevice, multiply volts times ampere rating.
GFCI TEST INSTRUCTIONS
NOTICE:
ALWAYS test GFCI outlets before connecting any loads to the generator.
Thedevice green LED is “ON” andcircuitbreaker is at “ON” position.
1. Press the “TEST” button. The green LED should go out and red LED should come on. The circuit breaker
shouldtriggerto the off position.
2. If the LED does not change state, or the breaker does not trip, DO NOT USE! Consult an electrician for
assistance.
3. Pressthe “RESET” button. TheredLED should turn offand green LED should turn on.
4. Manually reset the circuit breaker to the on position to restore circuit power.
TheNationalElectricalCode(NEC)requiresthatthe
generatorbeproperly connected toanapprovedground
source. The ground connection for this unit is located on
thegeneratorsupportleg.
CONNECTING ELECTRICAL LOADS
Allowtheenginetowarm-upbeforeconnectingany
devices to the unit. Connect the desired 120 or 240 volt
AC, single phase, 60 Hz electrical loads.
10

WATTAGE CONSUMPTION OF EQUIPMENT
DEVICE APPROXIMATE RUNNING WATTS
AirConditioner(12,000 BTU)** ........................................................................................................................... 1700
AirConditioner(24,000 BTU)** ........................................................................................................................... 3800
AirConditioner(40,000 BTU)** ........................................................................................................................... 6000
BatteryCharger(20Amp)..................................................................................................................................... 500
BeltSander(3”).................................................................................................................................................. 1000
ChainSaw.......................................................................................................................................................... 1200
CircularSaw(6-1/2”)................................................................................................................................ 800to 1000
Compressor(1hp)** ........................................................................................................................................... 2000
Compressor(3/4hp)** ........................................................................................................................................ 1800
Compressor(1/2hp)** ........................................................................................................................................ 1400
DiscSander(9”) ................................................................................................................................................. 1200
EdgeTrimmer ...................................................................................................................................................... 500
Electric Nail Gun................................................................................................................................................ 1200
ElectricRange(perelement) .............................................................................................................................. 1500
FurnaceFan(3/5hp)** ......................................................................................................................................... 875
GarageDoorOpener**............................................................................................................................... 500 to 750
HandDrill .................................................................................................................................................250 to 1100
HedgeTrimmer..................................................................................................................................................... 450
ImpactWrench..................................................................................................................................................... 500
JetPump**........................................................................................................................................................... 800
LawnMower ....................................................................................................................................................... 1200
LightBulb.............................................................................................................................................................100
OilBurneronFurnace .......................................................................................................................................... 300
OilFiredSpaceHeater(140,000BTU).................................................................................................................. 400
OilFiredSpaceHeater(85,000BTU).................................................................................................................... 225
OilFiredSpaceHeater(30,000BTU).................................................................................................................... 150
PaintSprayer,Airless(1/3 hp)** ........................................................................................................................... 600
PaintSprayer,Airless (handheld).......................................................................................................................... 150
Radio .......................................................................................................................................................... 50 to 200
SubmersiblePump(1-1/2hp)** .......................................................................................................................... 2800
SubmersiblePump(1hp)** ................................................................................................................................ 2000
SubmersiblePump(1/2hp)** ............................................................................................................................. 1500
SumpPump** ......................................................................................................................................... 800to 1050
TableSaw(10”)**................................................................................................................................... 1750to2000
WeedTrimmer ..................................................................................................................................................... 500
**Allow three times the listed watts for starting these devices.
USE OF EXTENSION CORDS
• DO NOT use split, frayed or worn cords.
• ALWAYS replace damaged cords immediately.
Long extension cords used to connect devices to the generator result in a loss of voltage. The longer the extension
cord, the greater the voltage loss. Refer to the chart on page 12 to help select proper cable size when using exten-
sion cords.
WARNING
Damaged extension cords can cause electrical shock, resulting in serious injury or death.
11

ADDING ENGINE OIL
1. Placethegeneratoronafirm,levelsurface.
2. Remove the oil fill cap/dipstick. Clean the area
around the oil fill cap and wipe the dipstick
clean.
3. Insert the dipstick in oil filler neck. Do not thread
into filler neck. Remove the dipstick, and check
theoillevel.
3. If oil is needed, carefully add oil to the bottom of
the oil filler neck, below the threads. While
filling,stopto check oil level. DO NOToverfill.
4. Insert oil fill cap/dipstick and secure tightly.
5. Checkengineoillevelbeforeeachuseofthegenerator.
CURRENT
(AMPS)
MAXIMUM CABLE LENGTH (FT)
#10 #12 #14 #16
5
10
15
20
600
1200
1800
2400
LOAD IN
WATTS VOLTS
120 240
120 240
120 240
120 240
225 455
115 225
75 151
57 110
140 285
70 140
47 95
36 70
90 180
45 90
30 60
--
60 120
--
--
--
3. Tightengasolinecapafterfillingthefuel tank.
OPERATING THE GENERATOR
ADDING GASOLINE
1. Removethegasolinecap.
2. Carefullyfill the fuel tank with UNLEADED gasoline. DO NOTuse premium gasoline. DO NOToverfill. Allow
approximately1/2”tank space for fuel expansion.
EXTENSION CORD SELECTION CHART
Keepextension cords as shortas possible, preferably less than15 feet long, to preventvoltage drop and possible
overheatingofwires. Use only high quality, well-insulated, three-wire, groundedcordsetstoconnectequipmentto
thegenerator.
LOWER
LIMIT
UPPER
LIMIT
Beforeoperatingthe generator,theengineoil level will need tobecheckedandgasoline will need to be addedtothe
unit.
12
WARNING
DO NOT fill fuel tank near an open flame, while smoking, or while engine is running. DO NOT fill tank
in an enclosed area with poor ventilation, doing so may result in serious personal injury or death.

STARTING THE ENGINE
1. Unplugallelectricalloads from the unit’s receptaclesbefore starting the engine.
2. Makesurethegeneratorisonafirm,level surface, away from any overhangs, open windows, ventsordoors.
3. Checkthefuelandengineoillevels.
4. Turnthemaincircuitbreakeroff.
5. Openthefuelshut-offvalve.
6. Turn the engine start switch on.
7. If the engine is cold or has not been run recently, locate the choke lever, just above the air cleaner housing on
the left side of the generator. Pull the choke lever toward you to engage.
8. On recoil start engines, grasp the t-handle of the pull rope and pull the rope in a rapid, steady motion to start
the engine. On electric start models, push the engine start push-button located on the control panel to start the
engine.
9. If the choke was used, allow the engine to run with it on for a few moments before pushing the lever back in.
POWERING THE LOADS
1. Connectany equipment directly tothe generator outlets orextension cords. For the 120/240V NEMAL4-30A
outlet, select the proper output voltage for the outlet and the equipment that will be connected to it.
2. Switch the main circuit breaker on. The equipment connected to the generator is now ready to use.
3. If the main circuit breaker is overloaded, it will “trip” or switch off. Verify that the loads connected to the
generatorarewithin the generator’s output range. Refer totheunitspecifications on page 7 for maximumand
continuousoutput watts.
4. Reset the breaker by switching it on. If the breaker trips again, reduce the load to the generator and reset the
circuitbreaker.
13
WARNING
Never start or stop engine with electrical devices plugged into the receptacles OR with
devices turned on, doing so may result in property damage, serious personal injury, or death.
Never connect any equipment in need of repair to the generator. DO NOT use extension cords that
are worn, cut or damaged. Doing so may result in property damage or personal injury.
CAUTION
NOTICE
DONOT connect 240 voltloads to 120 volt receptacles.DO NOT connect 3-phaseloadsor 50 Hz loads
tothegenerator,doingsomay result in equipment damage andpropertydamage.

STOPPING THE ENGINE
2. Turntheidlecontrolswitch off.
3. Switch the main circuit breaker to the off position.
3. Let the unit run for 3-5 minutes with no load to allow stabilization of the internal temperatures of the engine and
generator.
4. Turntheunitoff.
5. Closethefuel shut-offvalve.
1. Shut off all loads and unplug electrical loads from the control panel receptacles.
14
NEVER start or stop the engine while electrical devices are plugged in and turned on,
doing so may result in property damage or personal injury.
CAUTION

• Checktheengineoillevel daily before starting engine.
•DO NOT start the generator if the oil level is low! The normal operating level for the engine oil is whenoilis
present on the crosshatch pattern of the dipstick. Add oil to the engine if it does not start or if oil is not
present on the dipstick when tested.
•DO NOT overfillthecrankcase.
• ConsulttheengineOPERATIONANDMAINTENANCEMANUALfor thepropergradeofoil,includingspe-
cial operating conditions such as a change in season or climate.
• Servicethegeneratormorefrequentlywhenusedindustyareas.
ITEM DAILY
20
HRS.
50
HRS.
100
HRS.
300
HRS.
Check engine oil level

Change engine oil
*
Check air filter

Clean air filter

Replace air filter

Check and adjust spark plug

Replace spark plug

Clean muffler/spark arrester

Check and adjust idle speed

Check and adjust valve clearance

Clean combustion chamber
Clean fuel tank and filter
Check fuel tube
Visual walk around inspection


Every 500 hours
Every 2 years
Every 1 year
* After initial break-in, change the engine oil and filter. Oil change interval can then be extended to 100 hours.
MAINTENANCE SCHEDULE
A large central lifting eye is located on the top of the generator and
the eye is connected to the frame of the unit. Attach a sling or hook
directly to the lifting eye only if the devices are in good condition and
the equipment being used to raise the unit has sufficient capacity.
Approximateweightscanbefound on page 7. Always remain aware
ofothersaroundyouwhenmovingorliftingthe generator.
DAILY MAINTENANCE CHECKS AND TIPS
LIFTING THE GENERATOR
Thefollowingmaintenancescheduleshouldbefollowedto ensure proper performance of the unit.
15
WARNING
DO NOT service the generator unless you have the proper tools and are mechanically proficient.
Improper repairs may result in equipment damage or serious personal injury!

GROUNDFAULT
SENSINGMODULE
WARNING
TESTBEFORE EACH USE
SEEINSTRUCTIONS
RESET
RESET
P
O
W
E
R
F
A
U
L
T
GFCI TESTING INSTRUCTIONS TEST BEFORE EACH USE!
Normal operating state - sensing device green led is “on”
and circuit breaker is at “on” position.
Step 1: press “test” button. Green led should go “out” and
red led should come “on” and circuit breaker should trigger
to “off” position.
Step 2: if sensing device led or breaker does not trip or
change state, “do not use”. Consult an electrician for
assistance.
Step 3: press “reset” button. Red led should turn “off” and
green led should turn “on”.
Step 4: manually reset (switch) circuit breaker to “on”
position to restore circuit power.
GFCI QUE PRUEBAINSTRUCTIONSTEST
ANTES DE QUE CADAESTADO DE FUNCIONAMIENTO DE USE!
Normal - el dispositivo de detección led verde es "on" y el
interruptor está en "on" position.
Step 1: presione el botón de la "prueba". El led verde debe ir
"fuera de" y el led rojo debe venir "on" y el interruptor debe
accionar a "off" position.
Step 2: si el dispositivo de detección led o el triturador no
dispara ni cambia el estado, "no utilice". Consulte a electricista
para assistance.
Step 3: presione el botón del "reset". El led rojo debe dar vuelta
a "off" y el led verde debe dar vuelta a "on".
Step 4: reajuste manualmente el interruptor (del interruptor) a la
posición de "on" para restaurar energía del circuito.
GFCI EXAMINANT INSTRUCTIONS
TESTAVANT QUE CHAQUE ÉTATDE FONCTIONNEMENT D'USE!
Normal - le dispositif de sensation led verte est "on" et le
disjoncteur est à "on" position.
Step 1 : appuyez sur le bouton d'"essai". La led verte devrait
aller "hors de" et la led rouge devrait venir "on" et le disjoncteur
devrait déclencher à "off" position.
Step 2 : si le dispositif de sensation led ou le briseur ne se
déclenche pas ou ne change pas l'état, "n'employez pas".
Consultez un électricien pour assistance.
Step 3 : appuyez sur le bouton de "reset". La led rouge devrait
tourner "off" et la led verte devrait tourner "on".
Step 4 : remettez à zéro manuellement le disjoncteur (de
commutateur) dans la position de "on" pour reconstituer la
puissance de circuit.
WARNING
ADVERTENCIA
AVERTISSEMENT
Improper connection of generator to a building’s electrical system can allow electrical current from the generator to
backfeed into utility lines. This may result in electrocution of utility workers, fire or explosion. Connections to a
building’s electrical system must be made by a qualified electrician and comply with all applicable laws and
electrical codes.
La conexion incorrecta de un generador al sistema electrico de un edificio puede conducir a un retorno de la
corriente electrica desde el generador al sistema de distribuicion electrico publico. Esto puede conducir a la
electrocucion de los obreros del servicio publico, incendios o explosiones. Solo un tecnico electricista
capacitadopodra efectuar la conexion al sistema electrico del edificio. La conexion electrica a debera cumplir con
las leyes y codigos electricos pertinentes.
Le branchement non conforme du generateur au reseau de distribution electrique d’un immeuble peut provoquer la
reinjection du courant electrique du generateur dans les lignes du reseau public. Ceci peut provoquer une
electrocution des employes du service public, un incendie ou une explosion. Les branchements au reseau
electrique. Immeuble doivent etre effectues par un electricien qualifie et doivent etre conformes a toutes les lois ou
tous les codes electriques applicables.
WARNING
ADVERTENCIA
AVERTISSEMENT
WARNING
ADVERTENCIA
AVERTISSEMENT
ON
OFF
MAIN
BREAKER
OFF
MAIN
BREAKER
ON
MAIN
BREAKER
OFF
ENGINE
SWITCH
OFF
ON
OFF
TURNFUEL
ON
TURNFUEL
OFF
ENGINESWITCH
ON
CHECKOIL
12 3 4 5 1 2 3
CHECKFUEL
G
ON OFF
PULL TO
CHOKE
ENGINE
G
Use only in well ventilated area!
Do not use in any enclosed space or near open
doors, windows or ducting. Fumes can cause
death!
Employez seulement dans le secteur bien aéré!
N'employez dans aucun espace inclus ou ne vous
approchez pas des portes ouvertes, du windows
ou de la canalisation. Les vapeurs peuvent causer
la mort!
¡Cutilice solamente en área bien ventilada!
o utilice en ningún espacio incluido ni cerque a las
puertas abiertas, a windows al ducting.
¡Clos humos pueden causar muerte!
PN: 26560
Magnum Red Stripe - PG
PN: 26334
Decal, control panel MPG3800
PN: 27084
Decal, control panel MPG3800C
PN: 26298
Decal, Patent Pending
PN: 26298
Decal, Patent Pending
MPG 3800
MPG 3800C
UNIT DECALS
Note: Allsafety and operating decalsshown above are locatedon decal sheet 26332,unless otherwise noted.
16

TO
FRAME
ITEM NO. PART NO. QTY DESCRIPTION
1 26213 1 Panel, control - rear housing
2 24986R 1 Panel,control
3 65888 2 Receptacle,120V/20Aduplex-black
4 65878 1 Module,autoidle
5 65487 1 Receptacle,120V/30Atwist(L5-30R)
6 65488 1 Receptacle,240V/30Atwist(L14-30R)
7 65886 1 Module,GFIsensing
8 65941 1 Breaker,16A, 240V
9 26233 1 Switch,120V/240V
10 60398 4 Screw,10-32X.500panphil316SS
11 60181 4 Screw,M3-0.50X5panphil
12 60091 4 Screw,M4-0.70X12panphilG4.8
13 60051 4 Nut, M4-.70 nylock G8.8
14 65874 1 Switch, rocker - idle select
15 65873 1 Switch,rocker- on/off
16 19211 1 Tether,cable- 10.50long
17 60161 7 Nut,.250-20 sflgG5
18 60046 5 Screw,6-32X.750panphilG2
19 60290 5 Nut, 6-32 nylk 18-8 SS
20 60061 4 Nut, 10-32 nylk G5
12
15
1
CONTROL PANEL ASSEMBLY
3
2
4
5
6
8
7
9
14
17
9
11
11
10
16 13
19
18
18
20
20
17

18
FRAME AND FUEL TANK ASSEMBLY
1
18
3
2
21 45
6
7
6
8
22
19
29
28
33
32
9
10
11
13
31
13
30
14
13 10 12
29
28
15
16
17
26
27 19
20
20
23
22
19
27
27
8
34
35
36
6
25
24
37

ITEM NO. PART NO. QTY DESCRIPTION
1 26123 1 Valve,fueltank
2 26122 1 Gauge,fueltank
3 28495 1 Cap,fueltank
4 28494 1 Tank,fuel
5 60393 4 Screw,.250-20X1.000hxhd
6 60243 9 Washer, flat .250 USS
7 24916B 1 Weldment,frame
8 60144 6 Nut,.250-20nylock
9 60690 2 Screw,.375-16X1.000hxhdSS
10 60698 4 Washer, flat .375 SS
11 61120 2 Spacer,shoulder-.375ID .500OD.750SH
12 61088 2 Washer,.500 nylon .750/.062
13 60358 18 Nut,.375-16 nylock
14 26115 1 Assembly,control panel
15 60028 2 Screw,.312-18X1.000hxhd
16 60271 2 Washer, split lock .312
17 60119 2 Washer,flat .312
18 61142 2 Screw,.500-13X1.500carriagesquare
19 60309 6 Washer, flat .500 SAE
20 61152 4 Washer,.500flat.03THnylon
21 24920B 1 Bracket, lift eye
22 60307 4 Nut,.500-13nylock
23 61147 2 Nut, .312-18 U-clip G5 ZY long type
24 60168 1 Screw,.312-18X.750hxhdG5
25 60095 1 Nut,.312-18 serflgG5casehardened
- 50380 .521ft. Hose,fuel-.250IDMPGcarbcertified(notshown)
- 14216 2 Clamp,hose-SAE (.21-.62)miniature(notshown)
OPTIONALFEATURES:
26 26088B 1 Weldment,liftinghandle
27 60328 2 Screw,.500-13X2.500hxhdG5
28 60205 16 Screw,.375-16X1.000hxhdG5
29 60386 32 Washer,flat .375
30 26085B 1 Bracket, leg - wheel kit
31 26084B 1 Weldment, bracket - wheel kit
32 60321 2 Pin,cotter-.156X1.75
33 24998 2 Wheel, 10 in.
34 60696 2 Washer, .250 flat .625/.050 SS
35 26274 2 Isolator,rubber
36 61025 2 Screw,.250-20X1.500hxhdSS
37 26271 2 Fitting,plug-1.000taperedpolyethylene
19

TO
MUFFLER
TO
FRAME
TO
FRAME
TO
FRAME
ENGINE AND GENERATOR ASSEMBLY
20
1
13
212
3
4
5
10
2
9
1
27
3
3
38
11
15
16
14
12
17
1819
8
24
26
25
18
6
19
24
17 23
20
22 21
17
27
19
18
18
30
29
28
31
32
33
34
35
36 33
37
39
39
40