LONCIN EN3500 User manual

Thankyou forpurchasingaLoncinbrandgeneratorset(hereinafterreferred toasa
generator).Thecopyright ofthe Manualisreserved toLoncinIndustrialCo., Ltd.
Nopartofthispublication maybe reproduced,transmitted,distributed orstored
without priorwritten permission of LoncinIndustrialCo., Ltd.
Loncinand itsChinesetranslation 鑫 arethe brandorregistered trademarkof
LoncinIndustrialCo., Ltd.
Loncinadherestoastrategyof sustainabledevelopment,soLoncinreservesthe right
tomakechangesorimprovementswithoutnoticetoanyproductdescribedinthis
publication.
Thismanualshouldbe consideredapermanentpartofthegeneratorand should
remainwithit ifitisresold.
Thismanualcontainstheinformationabout howtousethegeneratorcorrectly,please
read itcarefullybeforeoperatingthe generator.Safeandcorrectoperation ofthe
generatorwill giveyou the best results.
AsLoncincontinuouslypursuesinnovation and progress ofproductdesignandquality,
thismanual,thoughcontainingthelatestinformationaboutthe productwhen itisprinted,
maybe slightlydifferent withthe actualproduct.
Pleasepaycloseattentiontothefollowingmessagesabout safety:
You CANSERIOUSLYHURTifyou don tfollowinstructions.
You CANbeHURTifyoudon tfollowinstructions.
Your generator or otherpropertycouldbedamagedifyou don t
followinstructions.
Note: Itisusefulinformation toyou.
Ifanyproblemoccurs,orifyou wanttoask anyquestion aboutthegenerator,please
contact anauthorized dealerofLoncin.

Contents
I. Brief introductionof thegenerator...................................................................................1
II.Safety..................................................................................................................................2
III.Preoperationcheck............................................................................................................2
IV.Starting/stoppingthegenerator........................................................................................4
V.Useofthe generator..........................................................................................................4
VI.Maintenanceofthegenerator...........................................................................................5
VII.Storage/transportingof the generator..............................................................................8
VIII. Troubleshooting.........................................................................................................10
IX.Wiringdiagram..................................................................................................................11
X.Basicparameters..............................................................................................................13
XI. Accessories.......................................................................................................................13

1
Receptacles
Oil dipstick
Engineswitch
Starter grip
Fuel switch
Air filter
Sparkplug cap Fueltankcap Fuel tank Muffler
Oil drainplug
I Briefintroduction ofthegenerator:

2
IISafety
Thankyou verymuchforselectingLoncingenerator,pleasecarefullyread and
understand thismanualbeforeoperatingthegenerator;safeoperation procedurescan
helpyou avoidaccidents.
Theprocedurestoensuresafeoperation:
1.Eachtimebeforestartingthe generator, preoperationcheckmust beperformed(see
item3ofContents)toavoidaccidentstotheoperatorsanddamagetothe
equipment.
2.Beforestartingthegenerator,goodventilationconditionsmustbeensured,andthe
engine mustbeatleastonemeterfromthebuildingoranyotherequipment; never
putanyinflammableobject nearthe generator.
3.Inordertoavoidscaldbythe generatororhurtbymovingparts,children and pets
mustbe keptawayfromthe operation area.
4.Fuelingmustbeperformed inaplacewithgood ventilation;beforeaddingoffuel,the
engine mustbestopped.Gasolineishighlyinflammableandeven explosiveunder
certainconditions.
5.When fuelingiscompleted,ensureno residualgasoline existson the surfaceofthe
generatorbeforerestartingthe generator.
6.Intheplacestofuelthegeneratorandtostorethefuel,no smoking,flameorsparkis
allowed, orafireoreven explosionmaybe caused.
7.Theexhaustgasofthegeneratorcontainscarbonmonoxide,sotakecarenotto
inhaleit. Neverusethegeneratorinanenclosedroomoraplacewithinadequate
ventilation.
8.Thegeneratorshall be used onastablegroundsurfaceonwhichthe generator’s
inclination doesn’texceed 20 degreesfromthe horizontalsurface.
9.Duringthe runningofthe generator,the mufflerwill be veryhotandwill remainhot
forawhileafterthe generatorisstooped.Nevertouchthe mufflerwhen itishot, or
scaldwill be caused.
10.Inordertoavoidelectricshock,neverusethegeneratorinahumidcondition.
11.Neverdirectlyconnectthe generatortoahomepowersupply.
IIIPreoperation check
1.Oil level oftheengine
Iftheengine runswithoutadequateengineoil init,severedamagewill be caused
toit.
Whencheckingtheoil leveloftheengine,itmustbe stoppedand putona
horizontalground surface.

3
Operation steps:
(1)Put thegeneratoron ahorizontalground
surface.
(2)Takeout and wipe off theoil dipstick.
(3)Insertfullythe dipstick andthentakeitout
and check theoil level.
(4)Iftheoil levelisclosetoorislowerthanthe
lowerlimitmarkofthedipstick,then
screwofftheoil fillercap andadd
engine oil ofqualifiedgrade until the oil
levelreachesthehigherlimitmarkofthe
dipstick (seeFigure1).
(5)Screwback andtightentheoil dipstick andoil fillercap.
Note: engine oil isan importantfactorthat
influencesengine’soutputpowerand servicelife.
NeveruseNon-detergentengine oil,dieselengine oil
ortwo-strokeengine oil becausetheywill harmthe
engine.Regularchangeofengine oil will helpprolong
engine’sservicelife.Therecommendedengine oils
(see Figure2)areSE orSFgradefour-stroke
gasoline engine oilsunderAPI classification,or
shouldbe SAE10W-3that isequivalent toSGgrade.
2. Fuel
(1)Screwoffthe fueltankcapand check fuellevel.
(2)If fuellevelistoo low,add fueluntil itslevelreachestheshoulderofthefuel
strainerinthe fuelfillerhole(seeFigure3).
(3)Whenfuellingiscompleted,screwon and tighten the fueltankcap.
Fuelling mustbeperformedinaplacewith
good ventilation whentheenginehas
stopped. Remember:neversmoke or lightafire.
Neverspill thefuel out.
Avoidlong or frequentcontactwithfuelor
inhalation offuel vapor.
Neverletchildrencontactfuel.
Note: The gasoline grade shouldbe90# orhigher.Unleadedgasoline isrecommended
becauseitproducesless carbondeposit onthe engineandsparkplug,andcanprolong
servicelifeof theexhaust system.
Neveruseagedgasoline,contaminatedgasoline orgasolinemixed withengine oil.
Neverlet dustorwaterintothe fueltank.
Figure3
Figure1
Oil dipstick
Oil upper
limit
Oil lower limit
Figure2
Ambient temperature

4
IV.Starting/stopping thegenerator
Stepstostartthegenerator:
1. Cutoffall loads.
2.Turnthe fuelswitchtotheONposition.
3. Put the chokeleveron the OFF position.
Donotshutoff thechoke iftheengineisstartedwhenitiswarm.
4. Put the engine switchontheONposition.
5.Gentlypull up the startergripand pull itoutbrisklywhen
aresistanceisfelt (seeFigure4).
Don tletthestartergripspring back
abruptlyafterstarting;thestartergrip
shouldbeletbackgently.
6.When theenginehasbeenstarted,putthe chokelever
on the ONposition.
Stepstostop thegenerator:
1. Cutoffall loads.
2.Turnofffuelswitch.
3.Turnoff engine switch.
Ifanemergencystopoftheengineisneeded,theengineswitch
shouldbeputon theOFF position.
V. Useofthegenerator
1.Therequirementsof environmentforuseof the generator:
(1)Applicabletemperaturerange: -15℃～40℃
(2)Applicablehumiditylevel: under95%.
(3)Applicablealtitude:lowerthan3,300feet(1,000meters).Foruseatanaltitude
ofmorethan3,300feet (1,000 meters), powerdecreaseisneededforoperation.
2. Connectingtohomepowersupply
If thegeneratoristobe connectedtoahomepowersupplyasastandby,connection
shall be performedbyaprofessionalelectrician orbyanotherpersonwithproficient
electricalskill.
Whentheloadsareconnectedtothegenerator,pleasecarefully
check whetherelectricalconnectionsaresafeand reliable.Any
improperconnection maycause damagetothegenerator, orcause afire.
Starter grip
Figure4

5
Beforeconnecting thegenerator tothehomepowercircuit,the
circuit sconnectionstoexternalpowersupplies(commercial
poweror otherpowersupplies)mustbecutoff first.
3. Earthingofthegenerator
Inordertopreventelectricshock duetoshoddyelectricalappliancesorwronguseof
electricity, the generatormust beearthedwithagood-qualityinsulated conductor.
4. Loads
Beforeconnectingthe loads,it mustbe confirmedthat
Thetotalof all loads’powervaluesdoesn’texceed thegenerator’sratedpower.
Overloaduse willshortenthegenerator sservice life.
If thegeneratorisconnectedtomultipleloadsorelectricityconsumers,please
remembertofirst connecttheonewiththehighest startingcurrent, then theonewiththe
secondhigheststarting current... and lastconnecttheonewiththe loweststarting
current.
5. Highaltitudeoperation
Inahighaltitudearea,the standardcarburetorair-fuelmixturewill be excessivelyrich,
outputpowerwill decreaseandfuelconsumption will increase.Highaltitude
performancecanbeimprovedbyinstallingasmallerdiametermainfueljetinthe
carburetorand readjustingthe pilotscrew.Ifyou alwaysoperatethe generatorat
altitudeshigherthan3,300feet(1,000meters),pleasehaveanauthorized generator
dealerperformcarburetorchange.
Even withsuitablecarburetorjetting,engine horsepowerwilldecreasebyapproximately
3.5%foreach1,000 feet(300meters)increaseinaltitude.Theeffectofaltitude on
horsepowerwill be greaterthan thisifno carburetorchangeismade.
Ifanenginesuitablefor high altitudeisusedataloweraltitude,the
excessivelyleanairfuelmixturewillreduce outputpowerandmay
over-heatand seriouslydamagetheengine.
VI. Maintenanceofthegenerator
Good maintenanceisthe bestassuranceforsafe,economicaland zero-malfunction
runningofthegenerator, andit isalsogoodforenvironmentprotection.
Inordertopreventcarbon monoxidepoisoning and electricshock,
shutoff thegenerator beforeperforming anymaintenance.
Periodicmaintenanceand adjustmentarenecessaryforkeepingthe generatorina
good operatingcondition.Performthe serviceandinspectionattheintervalsshownin
the Maintenanceschedulebelow:

6
MAINTENANCESCHEDULE Each
use Firsmonthor 20 Hrs. (3)
Every3
months
or 50
Hrs. (3)
Every6
months
or 100
Hrs. (3)
Every
year or
300 Hrs.
(3)
Checkoil level ○
Engineoil Change ○○
Check ○
Air filter Clean ○(1)
Fuelsediment
cup Clean ○
Sparkplug Clean ○Change
Valveclearance Check-Adjust ○(2)
Cylinder head Clean Every500 Hrs.(2)
Fueltankand
strainer Clean Everytwoyears(2)
Fuelline Change Everytwoyears(2)
(1)Maintainmorefrequentlywhen thegeneratorisused industyareas.
(2)Theseitemsshouldbe maintained byan authorized dealerof Loncin.
(3)Ifthe generatoristobeused frequently,maintenanceshall beperformedasperthe
scheduleabovetoensurelong-timenormaloperation.
Impropermaintenance,or failuretocorrecta
problembeforeoperation,cancauseamalfunction bywhichyou
canbehurtor killed.
Alwaysfollowtheinspection and maintenance recommendationsand schedules
inthisowner smanual.
1. Engineoil change
Drainthe engine oilwhilethe
engine hasbeenwarmed toensure
completeandrapiddraining.
(1)Removetheoil dipstick and
screwoffthedrainplug todrainthe
engine oil (seeFigure5).
(2)Rinstall the oil drainplugand
tighten it.
(3)Refill withthe recommended
engine oil and check oillevel.
Engine volume:
EN3500: 0.6L
EN5000orEN6500: 1.1L
Drainplug
Oil dipstick
Highest
oil level
Figure5

7
Paper
filter
Foam
filter
Figure6
Engineoil maycauseskincancerifrepeatedlyleft incontactwith
theskinfor prolongedperiods. Although theskincancerdoes not
necessarilyhappen,itisstill advisabletothoroughlywashthe
skinthathascontactedengineoil withsoapand waterafterhandling engineoil.
Forthe sakeofenvironmentprotection,pleasetreatthe usedengine oil inan
appropriateway.Westronglyadviseyou tostoretheusedengine oil inasealed
containerand takeittothelocalservicestation orrecyclingcenterforreclamation.
Neverthrowit inthe trashorpouritonthegroundorintothe ditch.
2.Airfiltermaintenance
Adirtyair filterwill restrictair flowintothe carburetor.Topreventcarburetormalfunction,
maintaintheair filterregularly. Maintainitmorefrequentlywhen operatingthegenerator
inextremelydustyareas.
Using gasolineorinflammablesolventtocleanthefilterelement
cancauseafireor explosion. Useonlysoapywateror nonflammablesolvent.
Neverrun thegenerator withouttheairfilter, or rapidenginewear
will result.
(1)Unsnap theair filtercoverclips, removethe air filter
coverand check the filterelement toconfirmitiscomplete
and clean.
(2)Ifthe foamelement isdirty, clean it followingthe method
below:
Washtheelementinasolutionofhouseholddetergentand
warmwater,orinanonflammabledetergent, orahigh
flashpointdetergent; squeezethe elementtothoroughly
removethefluidinit. Dripsomedropsof engine oil intoit.
Ifthe paperelementisdirty,gentlyknockitseveraltimes;
thenusecompressedair (withapressurenothigherthan207KPa)
toblowitfromthe insidetotheoutside.Neveruseabrushtocleanthepaperelement,
ortheair poresoftheelementwill be clogged.Ifthepaperelementisdamaged,
replaceit withanewone (seeFigure6).
(3)Reinstall theair filterelement andthe cover, thentightenthe screw.
3. Cleanthefuelsedimentcup
(1)TurnthefuelvalvetotheOFF position,remove
the fuelsedimentcup,andtakeoutthe Oringand
strainer.
(2)Clean the sediment cup, o-ring,andstrainerina
nonflammableorhighflashpoint solvent.
(3)Reinstall O-ringand strainer, and the fuelsediment
cup and tighten the cup.
Straine
r
O-ring
Sedimen
t cup
Figure7

8
Drainplug
(4)Turnthefuelvalvetothe ONpositionandcheck for
leaks (see Figure7).
4. Sparkplug
Recommendedsparkplugs: F7RTCoranotheroneoftheequivalent grade.
(1)Removethesparkplugcap.
(2)Clean anydirt fromaroundthesparkplug base.
(3)Usethesparkplug socket wrenchtoremovethesparkplug.
(4)Visuallycheck whetherthe sparkplug’sinsulationisdamaged,replaceitwithanew
one if itsinsulation isdamaged.
(5)Measurethe pluggap withafeelergauge.
Correctasnecessarybycarefullybendingtheside electrode.The gap shouldbe:
0.70-0.80mm(0.028-0.031in).
(6)Check whetherthesparkplugwasherisinagoodcondition
(7)Reinstall the sparkplugand usethe sparkplugsocketwrenchtotighten itand
tightlypress the sparkplugwasher;then reinstall the sparkplugcap(see Figure8).
Use thesparkplug oftheappropriateheatrange.
VII. Storage/transporting ofthegenerator
When transportingthe generator, keepthegeneratorleveltopreventfuelspillage.
Contactwithahotenginepartcan
causeafire.Lettheenginecoolbefore
transporting or storingthegenerator.
If thegeneratoristobestored foralongperiod,thestorage
area mustbekeptcleananddry.
1.Drainthefuelofthe fuel tankcompletely. Clean the fuel
strainer,O-ringand sedimentcup;then reinstall them. Loosenoff
the drainplug ofthe carburetor anddrainoff thefuelinit.
Figure8
Spark plug
socket wrench
Sparkplug cap

9
Gasolineisextremelyinflammableand isexplosiveundermost
conditions.Perform thistask inawellventilatedarea withthe
enginestopped.Neversmokeor allowflames orsparks intheareaduring this
procedure.
2.Screwoff theengineoil dipstick,andscrewoffthedrainplugtocompletedrainoff the
engine oil of thecrankcase.
Screwinthe drainplug and tighten it, andadd newengine oil untiloil levelreaches
the upperlimit, thenreinstall theengine oil dipstick.
3.Removethesparkplugandaddaspoonofcleanengine oil intothecombustion
chamber.Crankthe engine severalrevolutionstodistributetheoil,then reinstall the
sparkplug.
4. Gentlypull thestartergripuntil resistanceisfelt.
5. Put the generatorinacleananddryarea.

10
VIII. Troubleshooting
Thefollowingrecommended troubleshootingmethodsareapplicabletodiagnosisof
commonmalfunctions.Ifthesemethodscannot solvetheproblems,pleasecontact an
authorized repair station.
1. EngineUnabletostart：
2. Novoltage:
YES
Isthereenoughengine oil
inthe crankcase?
YES
YES
Istherefuelinthe
tank? Refillthe fuel tank
Add the
recommended
NO
Can thesparkplug
generatenormalsparks?
Replace
spark
plug
NO
Istherefuelinthe
carburetor?
Checkand cleancarburetorfuel
sediment cup
NO
Contactan auth
orized
repair station
Contactthe authorized
service station
Still no
spark
YES
NO
YES
NO
Arethe loads
connected correctly? Reconnect the loads
NO
Doesthe electricity
consumerhaveany
malfunction?
Contactthe authorized repair
station
Replace the electricity
consumer
YES

11
IX.Wiring diagram
1. Wiring diagramofEN3500Generator
Overcurrent protector12A
AC receptacle
Ground
terminal
Overcurrentprotector
12A
Principal
winding
Engineswitch
Controlpanel
block
Engine switch
connecting line
Secondary
winding
Excitation
winding
Generator
block
Engineoil
level
switch
Engineoil
level
alarm Spark plug
Ignitioncoil
Engine
Black/White
White
Green
Red
Blue
Brown
Black
Yellow
Yellow/Green

12
2、EN5000、EN6500 电路图 Wiring diagramofN5000 and EN6500 Generators
ACreceptacle
Ground
terminal
Engineswitch
Controlpanel
block
Overcurrent protector20A
Overcurrent protector20A
Principal
winding
Secondary
winding
Excitation
winding
Generator
block
Engineoil
levelswitch
Engineoil
level
alarm Spark plug
Ignitioncoil
Engine block
Engine sw
itch
connecting line
Black/White
White
Green
Red
Blue
Brown
Black
Yellow
Yellow/Green

13
X. Basicparameters
Model EN3500 EN5000 EN6500
Enginemodel LC168F-2 LC182F LC188F
Enginetype Singlecylinder, 4-Stroke, OHV25°, inclined, forced
aircooling
Cylinderborex
Stroke (mm) 68x54 82x64 88x64
Compression
ratio 8.5:1 8.0:1 8.0:1
Starting system Recoil andhand-operated
Igniting mode T.C.I.
Displacement
(ml) 196 337 389
Engine
Engineoil
volume(L) 0.6 1.1 1.1
Rated
frequency(Hz) 50
Ratedvoltage
(V) 115/230
Voltage
regulating
system
AVR
Ratedpower
(kVA) 2.3 4.0 5.0
Maximum
power(kVA) 2.5 4.5 5.5
Powerfactor 1.0
Generator
Fuel tank
capacity(L) 0.6 1.1 1.1
XI.Accessories
Thegenerator isequippedwithasparkplug socketwrenchandanoperation
manual.