YARDMAX 154FS-1 User manual

SaveThisManual forFutureReference
GasolineEngine
Operator’sManual
MODELNUMBER
154FS-1
SERIALNUMBER
PURCHASE DATE
Bothmodelnumberandserial
numbermaybe foundon the
mainlabel.Youshouldrecord
bothoftheminasafeplacefor
futureuse.
FOR YOUR SAFETY
READANDUNDERSTANDTHEENTIREMANUALBEFOREOPERATINGMACHINE
TametheGreatOutdoors®

Introduction 1
6SHFLĆFDWLRQV 3
Safety 3
KnowYourEngine 4
Controls 5
CheckbeforeOperation 6
Operation 7
Maintenance 9
Storage 12
Technical& ConsumerInformation 13
WiringDiagram 14
TABLE OF CONTENTS
Your new YARDMAX®engine offers quality construction
that is easy and safe to operate. With proper use and
care, it is designed to give you many years of dependable
service.
Prepare to experience the durability to take on any job
with the ease, portability, and convenience of your new
engine!
Discover theYARDMAXAdvantage
At YARDMAX, we understand that land ownership
definitely has its privileges, but it also comes with a
great deal of responsibility. When duty calls and you
need to respond, will you have what it takes to tame the
greatoutdoors?
Whenlookingforoutdoorpowerequipment(OPE)toget
the job done right, at the right price, YARDMAX delivers
the perfect combination of performance and practicality.
YARDMAXhas asolution that’sright foryou.
MAX Performance, MAX Value, MAX Support —
that’sYARDMAX
Backedbydecadesofprovenmanufacturingexpertise
Enhanceddesignfeaturescomestandard
Engineeredforthebestuserexperience
Qualitymetalpartsareusedinsteadofplastic
Arobustwarrantysupportsallproducts
Budget-friendlypricesmakeitpractical
Upforthejob?YARDMAXis.
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1
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Introduction

Carefully read through this entire operator’s manual
before using your new engine. Pay attention to all
cautionsandwarnings.
ENGINESERIAL NUMBER
DISCLAIMER
YARDMAX reserves the right to discontinue, change,
and improve its products at any time without notice
or obligation to the purchaser. The descriptions and
VSHFLĆFDWLRQVFRQWDLQHGLQWKLVPDQXDOZHUHLQHIIHFWDW
printing. Equipment described within this manual may be
optional.Someillustrations maynotbeapplicabletoyour
unit.
ENVIRONMENTAL
Recycle unwanted materials instead of disposing of
themaswaste.Alltools,hoses,andpackaging should
be taken to the local recycling center and disposed of
inanenvironmentallysafe way.
Recordtheengineserialnumberonthefrontcoverofthis
manual. You will need this serial number when ordering
parts,andwhenmakingtechnicalorwarrantyinquires.
ENGINETYPE
SERIALNUMBER
DISCLAIMER
Keep this owner's manual handy, so you can refer to it at
anytime.
This owner's manual is considered a permanent part of
theengineandshouldremainwiththeengineifresold.
The information and specifications included in this
publication were in effect at the time of approval for
printing.
READ THIS OWNER’S MANUAL CAREFULLY. Pay special
attentiontothesesymbolsandanyinstructionsthatfollow:
Warning!
Indicates serious injury or death will result if
instructionsarenotfollowed.
Danger!
Indicates a strong possibility that serious injury or
deathcouldresultifinstructions arenot followed.
Caution!
Indicatesa possibility that minor injury or an resultif
instructionsarenotfollowed.
Notice:
Indicates that equipment or property damage can
resultifinstructionsare notfollowed.
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Operator’sManual
Introduction
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* 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 3,600 rpm (Net Power) and at 3,800 rpm (Max. Net Torque). Mass production engines
mayvary fromthisvalue.
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oftheengine inapplication,environmentalconditions,maintenance,andothervariables.
SPECIFICATIONS
Model 154FS-1
Type 0.028" ~0.031"
Ratedpower
(kW/3600rpm)* 1.65Kw/3600rpm
0D[WRUTXH1ïPUSP 4.5N.m/3800rpm
Fuelconsumptionratio
JN:ïK Ă
6SHHGćXFWXDWLQJUDWLR Ă
1RLVHĂG%$ 70
Bore×Stroke(mm) 54×38
Displacement(cc) 87
Compressionratio 8.5:1
Lubricatingmode Splash
Staringmode Recoilstart
Rotation Anti-clockwise
(fromP.T.O.Side)
Valveclearance(mm) Intakevalve 0.10-0.15
Exhaustvalve 0.15-0.20
Sparkpluggap(mm) 0.7~0.8
Ignitionmode Transistorizedmagnetoignition
Aircleaner noelement
Dimension
(mm)
Length 344
Width 316
Height 327
Netweight(kg) 12.5
SUPPORT
HavequestionsaboutyourYARDMAXequipment?
Callusat844-YARDMAX, emailus at
[email protected], or contact us via your
favoritesocialmediasite.
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SAFETY
SYMBOLS
Theratingplate on yourmachinemayshowsymbols.Theserepresentimportantinformationabouttheproductorinstructionsonitsuse.
Readtheseinstructionscarefully.
Weareyeprotection.
Wearhearingprotection.
Wearsafetyfootwear.
Do not remove or tamper with the
protectionandsafetydevices.
1RVPRNLQJVSDUNVRUćDPHV
Donottouchpartswhich arehotfrom
operation.Seriousburnsmayresult.
Stop engine, remove key, read manual
beforemakinganyrepairsoradjustments.
IMPORTANTSAFETYINFORMATION
Most accidents with engines can be prevented if you follow all
instructions in this manual and on the engine. Some of the most
common hazards are discussed below, along with the best way to
protectyourselfandothers.
OWNERRESPONSIBILITIES
Theenginesaredesignedtogivesafeanddependableserviceif
operated according to instructions. Read and understand this
owner’s manual before operating the engine. Failure to do so
couldresultin personalinjuryorequipmentdamage.
Know how to stop the engine quickly, and understand the
operation of all controls. Never permit anyone to operate the
enginewithoutproper instructions.
Donotallowchildrentooperatetheengine.Keepchildrenand
petsfarawayfromthe areaofoperation.
OPERATORSAFETY
SafetyMeasures
START/STOPSAFETY
StartingTheEngine
Warning!
Wash hands after using the machine, refueling, and
FKDQJLQJćXLGV Certain components in this product
anditsaccessories containchemicalsknowntocause
cancer, birth defects, or other reproductive harm
accordingtotheStateof California.
Warning!
Kick back or rapid retraction of the recoil cord will
pull the operators hand and arm towards the engine
quickerthanyoucan letgo.
Warning!
$OZD\VUXQ\RXUHQJLQHRXWGRRUV Exhaust from the
engine contains fumes known to cause cancer, birth
defects, or other reproductive harm according to the
StateofCalifornia.
Warning!
YARDMAX engines are not engineered or intended to
be used to power any other device than what it was
originally specified in. Including but not limited to
competitive racing events, recreational, sport or all-
terrainvehicles(ATV’s),go-karts,fun-karts,golf-carts,etc.
AvoidingKick Back
Lightlypulltherecoilhandle so thatthecordistaughtprior to
pullingharderto start.
Gripthestarterhandlesoyoucanquicklyreleaseitifneeded.
Ifgrippedtoo tightlyinjurycouldresult. 4
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6DIW\.QRZ\RXU(QJLQH
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Primingpump
OilDipstick
ChokeControl
AirBox
IgnitionSwitch
OilDrainPlug
CylinderHeadCover
SparkPlug
FuelShutoff Valve
StarterGrip
ThrottleControl
FuelTank
FuelFiller Cap
0XIćHU
FEATURESANDCONTROLS
KNOWYOURENGINE
FUELSAFETY
Warning!
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explosive. Fire or explosion can cause severe burns or
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lights, heat sources, or any other ignition sources. If
fuel spills, wait for it to completely evaporate before
startingtheengine.
HOT EXHAUST
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for a while after stopping the engine. Be careful not to touch the
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When the rope is taught with resistance pull quickly and
smoothlytoavoidkickback. 7R SUHYHQW ĆUH KD]DUGV DQG WR SURYLGH DGHTXDWH YHQWLODWLRQ IRU
stationary equipmentapplications, keep theengine atleast3 feet
(1 meter) away from building walls and other equipment during
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CARBONMONOXIDE HAZARD
Exhaust gas contains poisonous carbon monoxide. Avoid
inhalationofexhaustgas. Never run the engine in a closed garage
RUFRQĆQHGDUHD
OTHER EQUIPMENT
Review the instructions provided with the equipment powered
by this engine for any additional safety precautions that should
be observed in conjunction with engine startup, shutdown,
operation, or protective apparel that may be needed to operate
theequipment.
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5

CONTROLS
The engine switch enables and
disablestheignition system.
The engine switch key must put in
fortheengine torun.
Pulling out the engine switch key
willstopthe engine.
The choke lever opens and closes
thechokevalveinthecarburetor.
Pullingthestarter griptocranktheengine.
The CLOSE position enriches the fuel mixture for starting a cold
engine.
The OPEN position provides the correct fuel mixture for
operationafter starting,andfor restartingawarmengine.
Some engine applications use a remotely-mounted choke control
rather than the engine-mounted choke lever shown here. (See
Figure2)
ENGINESWITCH CHOKELEVER
RECOILSTARTERGRIP
Figure1a
Figure1b
Figure2
IN-ON
OUT-OFF
EngineSwitch
OPEN
CLOSED
OPEN
CLOSED
Caution!
Don’t let the lever suddenly rebound, lightly put the
leverback.
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6
GasolineEngine
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Operator’sManual

Figure3
RECOILSTART
StarterGrip
Figure4
The Priming Pump supplies more
fueltothecarburetorwhenstarting
theengineinthelowtemperature.
When you put the Priming Pump, you should not put more than
threetimes.
PRIMINGPUMP Notice:
Engines applied in snow blowers, are suggested
using between -22º F (-30º C) to 40º F (4.4º C). If
it operates below or above this temperature scope,
enginescouldn'tstartorworknormally.
Notice:
Your engine is shipped from YARDMAX without the
oil.Addoil pertheinstructionsbeforestarting.
For your safety, and to maximize the service life of your
equipment,itisveryimportanttotakeafew momentsbeforeyou
operate the engine to check its condition. Be sure to take care
RIDQ\SUREOHP\RXĆQGRUKDYH\RXUVHUYLFLQJGHDOHUFRUUHFWLW
beforeyouoperatethe engine.
Before beginning your preoperation checks, be sure the engine is
levelandtheenginekeyhasbeenremoved.
1. ChecktheGeneral Conditionofthe Engine
Look around and underneath the engine for signs of oil or
gasolineleaks.
Remove any excessive dirt or debris, especially around the
PXIćHUDQGUHFRLOVWDUWHU
Lookfor signsofdamage.
Checkthatallshieldsandcoversareinplace,andallnuts,bolts,
andscrewsare tightened.
2. CheckOil
1) Removetheoildipstickand cleanoffwith atowel.
2) Re-insert the oil dipstick and check the oil level without
screwingitdown.
3) Iftheoilistoolow,addenoughoiltoreachthehighareaof
thesafelimits zone.
4) Reinstallandtighten oildipstickbackontheengine.
CHECKBEFOREOPERATION
ISYOURENGINEREADYTOGO?
Warning!
Improperly maintaining this engine, or failing to
correct a problem before operation, could cause a
malfunctioninwhich youcouldbeseriouslyinjured.
Warning!
Always perform a preoperation inspection before
eachoperation,andcorrectanyproblem.
Caution!
Alwayscheckthe engineoilonalevelsurface.
CHECKBEFOREOPERATION
7
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Controls

Figure5
Figure6
3. CheckbeforeOperation
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equipped)areclean andsecuredinplace.
If the spark plug is unplugged or removed do not crank the
engine.
CHECKFUEL
Turn engine off, open the fuel cap and check the fuel level. If the
IXHOOHYHOLVWRORZDGGIXHOXQWLOIXOO:KHQWKHXQLWKDVEHHQĆOOHG
completely, takethefuelcapand tightenthefuelcapclockwise.
Refuel in a well-ventilated area before starting the engine. If the
enginehasbeenrunning,allowittocool. Refuel carefully to avoid
spilling fuel. Don’t add the fuel over the shoulder of the Fuel Tank
(maximumfuellevel).
Review the instructions provided with the equipment powered
by this engine for any precautions and procedures that should be
followedbeforeengine startup.
Only use unleaded gasoline with an octane rating over 90. This
will help eliminate carbon deposits and extended the service life
oftheengine.Donotusegasolinemixed with oil or contaminated
withdirtor water.
CHECKTHEEQUIPMENT POWEREDBYTHISENGINE
Notice:
Running the engine with a low oil level can cause
engine damage, so always check the engine oil level
beforestartup.
OilDipstick LowerLimit
UpperLimit
Fuel tankvolume:1.4L
Maximumfueloil level
Never refuel the engine inside a building where gasoline fumes
PD\UHDFKćDPHVRUVSDUNV.HHSJDVROLQHDZD\IURPDSSOLDQFH
pilotlights,barbecues, electricappliances,powertools,etc.
Spilled fuel is not only a fire hazard, it causes environmental
damage.Wipeup spillsimmediately.
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Operator’sManual
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Before operating the engine for the first time, please review
the IMPORTANT SAFETY INFORMATION and the chapter titled
BEFOREOPERATION.
2. Tostartacoldengine,movethe
choke lever to the “CLOSED”
position. To start a warm
engine, turn the choke lever to
the“OPEN"position.
SAFEOPERATINGPRECAUTIONS
STARTINGTHEENGINE
Warning!
Carbonmonoxidegasistoxic.Breathingitcancause
unconsciousnessordeath.Avoidanyareas oractions
thatexposeyouto carbonmonoxide.
EngineSwitch
OPEN
CLOSED
1. Put the engine switch in the
keyhole.
Figure7a
OPERATION
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Figure7b
Figure7e
OPEN
OPEN
CLOSED
CLOSED
Recoil Starter - Pull the starter grip lightly until you feel
resistance,thenpull briskly.Returnthestartergripgently.
Prime Engine - To prime engine you should not press priming
pumpmorethan threetimes.
Figure7d
Figure7c
StarterGrip
Notice:
Startingtheengine,carefullynotethefollowing:
When using the machine in very low temperatures, a
warm up period of up to 30 seconds may be required
of the engine prior to operation. If inconsistent engine
speedsareexperiencedwhenchokeleverisrotatedOPEN
position:
1. Move choke lever to mid-point between OPEN
andCLOSEpositionsandallowengine to develop
additionaloperatingheat.
2. Afterenginehas warmed up, movechoke lever to
OPENposition.
3. If the choke lever has been
movedtothe“CLOSE”position
to start the engine, gradually
moveittothe“OPEN”position
astheengine warmsup.
OPEN
CLOSED
STOPPING THEENGINE
To stop theengineinan emergency,simplyturn the engineswitch
tothe“OFF”position. Under normal conditions, use the following
procedure.Pullout theengineswitch.
Figure8
TheEngineSwitch Key
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Operator’sManual
Operation
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THEIMPORTANCEOFMAINTENANCE
SAFETYPRECAUTIONS
We recommend you take your YARDMAX engine to a YARDMAX
authorized service center to have all maintenance and service of
theengineand itsparts.
Unintentional start up can create entanglement, laceration, or
amputation.
BeforeperformingmaintenanceorserviceonyourYARDMAX
engine take the following steps to ensure a safe work
environment
To help you properly care for your engine, the following pages
include a maintenance schedule, routine inspection procedures,
andsimple maintenanceproceduresusingbasichandtools.Other
VHUYLFHWDVNVWKDWDUHPRUHGLIĆFXOWRUUHTXLUHVSHFLDOWRROVDUH
best handled by professionals and are normally performed by a
WHFKQLFLDQRURWKHUTXDOLĆHGPHFKDQLF
Themaintenancescheduleappliestonormaloperatingconditions.
If you operate your engine under unusual conditions, such as
sustained high-load or high-temperature operation, or use in
unusually wet or dusty conditions, consult your servicing dealer
forrecommendationsapplicabletoyourindividualneeds anduse.
MAINTENANCE
Warning!
Improperly maintaining this engine, or failure to
correct a problem before operation, can cause a
malfunction in which you can be seriously hurt or
killed.Alwaysfollowtheinspection and maintenance
recommendations and schedules in this owner’s
manual.
Warning!
The fuel tank must be emptied, if mounted on the
engine, prior to performing maintenance. Tipping of
the engine may cause the fuel to leak out causing a
ĆUHRUH[SORVLRQ
Warning!
Always unplug the spark plug before performing
VHUYLFH6SDUNFDQUHVXOWLQĆUHRUHOHFWULFVKRFN
Make surealldrivecontrolsaredisengaged.
Move the stop switch to off or remove the ignition key if
equipped.
Unplugthespark plugwire.
Iftheengineisinstalledonthemachineblockthewheelsto
preventmovementor tipping.
To ensure safe operation after maintenance is performed
followtheseguidelines:
Useonlythe correcttools.
Donottamperwiththegovernorspring,links,orotherparts
toincreasespeed.
OnlyuseYARDMAXapprovedreplacementparts.
'R QRW VWULNH WKH ć\ZKHHO ZLWK D KDPPHU RU RWKHU KDUG
object.
Whentestingfor spark:
Useanapprovedsparkplug tester.
Nevercheckforsparkwith theplugremoved.
Make suretheengineisoff before youbeginany maintenance
orrepairs.This willeliminateseveralpotential hazards:
Carbonmonoxide poisoningfromengine exhaust.
Be sure there is adequate ventilation whenever you operate
theengine.
Burnsfromhot parts.
Lettheengineandexhaustsystemcoolbeforetouching.
Injuryfrommoving parts.
Donotrunthe engineunlessinstructed todoso.
Read the instructions before you begin, and make sure you
havethetoolsandskillsrequired.
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ZRUNLQJ DURXQG JDVROLQH 8VH RQO\ D QRQćDPPDEOH VROYHQW
QRWJDVROLQHWRFOHDQSDUWV.HHSFLJDUHWWHVVSDUNVDQGćDPHV
awayfromallfuel-relatedparts.
Rememberthatyourservicingdealerknowsyourenginebest and
isfullyequipped tomaintainandrepairit.
To ensure the best quality and reliability, use only new, genuine
partsortheir equivalentsforrepairandreplacement.
11
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Maintenance

MAINTENANCESCHEDULE
Mission-relateditems.
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REGULARSERVICEPERIOD Eachuse Firstmonth
or20Hrs.
Every3
monthsor
50Hrs.
Every6
monthsor
100Hrs.
Everyyear
or
150Hrs.
Engineoil Checklevel
Change
SedimentCup Clean
Sparkplug Clean Replace
Valveclearance Check-Adjust *
Covercomphead Clean Afterevery150Hrs.*
)XHOWDQNDQGIXHOĆOWHU Clean Every2years(Replaceif necessary)*
Fuelline Check Every2years(Replace ifnecessary)*
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Operator’sManual
Maintenance
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REFUELING
FUELRECOMMENDATIONS
CHECKINGENGINEOIL
ENGINEOILCHANGE
With the engine stopped, remove the fuel tank cap and check the
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Use unleaded gasoline with a pump octane rating of 90 or higher,
Youcanalsouseotherfuels,such asethanolgasoline.
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Unleadedgasolineproducesfewerengineandsparkplugdeposits
andextendsexhaustsystemlife.
Never use stale or contaminated gasoline or an oil/gasoline
mixture.Avoidgetting dirtorwater inthefueltank.
Occasionally you may hear a light ‘‘spark knock’’ or ‘‘pinging’’
(metallicrappingnoise)whileoperating under heavyloads.This is
nocausefor concern.
Checktheengineoillevelwiththeenginestoppedandinalevelposition.
1. 5HPRYHWKHĆOOHUFDSGLSVWLFNDQGZLSHLWFOHDQ
Drain the used oil while the engine is warm. Warm oil drains
quicklyandcompletely.
1. Place a suitable container below the engine to catch the used
RLODQGWKHQUHPRYHWKHĆOOHUFDSDQGWKHGUDLQSOXJ
2. Allow the used oil to drain completely, and then reinstall the
drain plug, and tighten it securely. Please dispose of used
motoroilinamannerthatiscompatiblewiththeenvironment.
We suggest you take used oil in a sealed container to your
local recycling center or service station for reclamation. Do
notthrowitinthetrash;pouritontheground;ordownadrain.
2. Insert and remove the dipstick without screwing it into the
ĆOOHUQHFN&KHFNWKHRLOOHYHOVKRZQRQWKHGLSVWLFN
3. ,IWKHRLOOHYHOLVORZĆOOWRWKHHGJHRIWKHRLOĆOOHUKROHZLWKWKH
recommendedoil.
4. 6FUHZLQWKHĆOOHUFDSGLSVWLFNVHFXUHO\
The Oil Alert system (applicable engine types) will automatically
stoptheenginebeforetheoillevelfallsbelowsafelimit.However,
to avoid the inconvenience of an unexpected shutdown, always
checktheengine oillevelbeforestartup.
Refuel in a well-ventilated area before starting the engine. If the
enginehasbeenrunning,allow it to cool.Refuelcarefullytoavoid
VSLOOLQJ IXHO 'R QRW ĆOO DERYH WKH IXHO VWUDLQHU VKRXOGHU $IWHU
refueling,tightenthe fueltankcapsecurely.
Never refuel the engine inside a building where gasoline fumes
PD\UHDFK ćDPHVRUVSDUNV .HHSJDVROLQHDZD\IURPDSSOLDQFH
pilotlights,barbecues, electricappliances,powertools,etc.
6SLOOHG IXHO LV QRW RQO\ D ĆUH KD]DUG LW FDXVHV HQYLURQPHQWDO
damage.Wipeup spillsimmediately.
Warning!
*DVROLQHLVKLJKO\ćDPPDEOHDQGH[SORVLYH<RXFDQ
beburnedor seriouslyinjuredwhenhandlingfuel.
6WRSWKHHQJLQHDQGNHHSKHDWVSDUNVDQGćDPH
away.
Handlefuelonly outdoors.
Wipeupspills immediately.
Figure9
Fuel tankvolume:1.4L
Maximumfueloil level
Notice:
Fuel can damage paint and plastic. Be careful not to
VSLOOIXHOZKHQĆOOLQJ\RXUIXHOWDQN'DPDJHFDXVHG
byspilledfuel isnotcoveredunderwarranty.
Notice:
Running the engine with persistent spark knock or
pingingcancause enginedamage.
Runningtheenginewithpersistentsparkknockorpinging
is considered misuse, and the Distributor’s Limited
Warrantydoesnotcoverpartsdamagedbymisuse.
Notice:
Running the engine with a low oil level can cause
enginedamage.
If spark knock or pinging occurs at a steady engine speed, under
normal load, change brands of gasoline. If spark knock or pinging
persists,seean authorizedservicingdealer.
Figure10
OilDipstick LowerLimit
UpperLimit
|
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13

ENGINEOILRECOMMENDATIONS
SPARKPLUG
Using the proper type and weight of oil in the engine is extremely
important,asisdailycheckingof oil leveloil,orusingdirty oil, will
causeprematureengine wearandfailure.
Oil Type - When the ambient temperature is under -25°C, SAE
0W-30/40 is recommended for general use; when the ambient
temperature is above -25°C but under 4.4°C, SAE 5W-30 or 0W-
30/40 is recommended for general use. The SA oil viscosity and
VHUYLFH FODVVLĆFDWLRQ DUH LQ WKH $3, ODEHO RQ WKH RLO FRQWDLQHU :H
recommendthatyouuseAPISERVICECategorySForhigherclassoil.
1. Disconnect the spark plug cap, and remove any dirt from
aroundthespark plugarea.
2. Removethesparkplugwith asparkplug wrench.
3. Inspectthesparkplug.Replaceitiftheelectrodesareworn,or
iftheinsulator iscrackedorchipped.
4. Measure the spark plug electrode gap with a suitable gauge.
The gap should be 0.028 - 0.031 in (0.70 - 0.80 mm). Correct
thegap,if necessary.
5. Install the spark plug carefully, by hand, to avoid cross-
threading.
6. Afterthesparkplugseats,tighten withaspark plugwrenchto
compressthewater.
If reinstalling the used spark plug, tighten 1/8 - 1/4 turn after
thesparkplug seats.
If installing a new spark plug, tighten 1/2 turn after the spark
plugseats.
7. Assemblesparkplug.
Recommendedsparkplugs: E7RTC orotherequivalents.
Notice:
Anincorrectsparkplugcan causeenginedamage.
Notice:
A loose spark plug can overheat and damage the
engine. Over tightening the spark plug can damage
thethreadsinthecylinder head.
Figure12
Figure11
3. :LWKWKHHQJLQHLQDOHYHOSRVLWLRQĆOOWRWKHRXWHUHGJHRIWKH
RLOĆOOHUKROHZLWKWKHUHFRPPHQGHGRLO
Engineoilcapacities: 0.35L
Running the engine with a low oil level can cause engine
damage.
The Oil Alert system (applicable engine types) will automatically
stoptheenginebeforetheoillevelfallsbelowthesafelimit.
However, to avoid the inconvenience of an unexpected
VKXWGRZQ ĆOO WR WKH XSSHU OLPLW DQG FKHFN WKH RLO OHYHO
regularly.
4. 6FUHZLQWKHĆOOHUFDSGLSVWLFNVHFXUHO\
OilDipstick
OilUpperLimit
DrainBolt and
SealingWasher
SparkPlugWrench 0.028 ~ 0.031in
(0.70~0.80mm)
SAE Viscosity Grades
AMBIENT TEMPERATURE
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|
14
GasolineEngine
»
Operator’sManual

STORAGE
STORAGEPREPARATION
CLEANING
REMOVALFROMSTORAGE
TRANSPORTING
DRAININGCARBURETOR
Proper storage preparation is essential for keeping your engine
trouble free and looking good. The following steps will help to
keeprustandcorrosionfromimpairingyourengine’sfunctionand
appearance,andwillmaketheengineeasiertostartafterstorage.
If the engine has been running, allow it to cool for at least half an
hour before cleaning. Clean all exterior surfaces, touch up any
GDPDJHGSDLQWDQGFRDWRWKHUDUHDVWKDWPD\UXVWZLWKDOLJKWĆOP
ofoil.
Check your engine as described in the chapter CHECK BEFORE
OPERATION.
,IWKHIXHOZDVGUDLQHGGXULQJVWRUDJHSUHSDUDWLRQĆOOWKHWDQNZLWK
freshgasoline.Ifyoukeepa containerofgasolineforrefueling, be
sure that it contains only fresh gasoline. Gasoline oxidizes and
deterioratesovertime,causinghardstarting.
If the cylinders were coated with oil during storage preparation,
WKHHQJLQHPD\VPRNHEULHć\DWVWDUWXS7KLVLVQRUPDO
If the engine has been running, allow it to cool for at least 15
minutes before loading the engine-powered equipment on the
transport vehicle. A hot engine and exhaust system can burn you
andcanignite somematerials.
Keeptheenginelevel when transportingto reduce the possibility
offuelleakage.
If your engine will be stored with gasoline in the fuel tank and
carburetor, it is important to reduce the hazard of gasoline
vapor ignition. Select a well-ventilated storage area away from
DQ\ DSSOLDQFH WKDW RSHUDWHV ZLWK D ćDPH VXFK DV D IXUQDFH
water heater, or clothes dryer. Also avoid any area with a spark-
producingelectricmotor,orwherepowertoolsareoperated.
If possible, avoid storage areas with high humidity, because that
promotesrustand corrosion.
Besureallfuelhasbeendrainedfrom the fuel tank, to reduce the
possibilityoffuel leakage.
Positiontheequipmentsotheengineislevel.Tiltingcancausefuel
oroilleakage.
Withtheengineandexhaustsystemcool,covertheenginetokeep
outdust.Ahotengineandexhaustsystemcanigniteormeltsome
materials. Do not use sheet plastic as a dust cover. A nonporous
cover will trap moisture around the engine, promoting rust and
corrosion.
If equipped with a battery for an electric starter, recharge the
battery once a month while the engine is in storage. This will help
toextendtheservice lifeofthebattery.
1. Place a container underneath the carburetor, and use funnel
toavoidspattering.
2. Remove the drain plug and sediment cup, then, open the fuel
cock.
3. Immediatelyreassemblesedimentcupanddrainboltafterfuel
completelydraining.Andscrewdown.
1) Changetheengine oil.
2) Removethesparkplugs.
3) Pour a tablespoon (5-10 cc) of clean engine oil into the
cylinder.
Notice:
Using a garden hose or pressure washing equipment
can force water into the air cleaner or muffler
opening. Water in the air cleaner will soak the air
ĆOWHUDQGZDWHUWKDWSDVVHVWKURXJKWKHDLUĆOWHURU
PXIćHUFDQHQWHUWKHF\OLQGHUFDXVLQJGDPDJH
Notice:
Water contacting a hot engine can cause damage. If
the engine has been running, allow it to cool for at
leasthalfan hourbeforewashing.
Spring
Bolt
4) Pull the starter rope several times to distribute the oil in
thecylinder.
5) Reinstallthespark plugs.
6) Pull the starter rope slowly until resistance is felt. This
will close the valves so moisture cannot enter the engine
cylinder. Returnthestarterropegently.
7) Put the out case on the engine and place in the ventilated
anddryarea.
Figure13
15
|
Maintenance

TROUBLESHOOTING
EnginewillnotStart Possible Cause Correction
1. Electricstarting:check
battery Batterydischarged Rechargebattery
2. Checkcontrolpositions
FuelvalveOFF
ChokeOPEN
EngineswitchOFF
MovelevertoON
MovelevertoCLOSEunlessengine
iswarm.
TurnengineswitchtoON
3. Checkfuel
Outoffuel
Badfuel;enginestoredwithouttreating
ordraininggasoline,orrefueledwith
badgasoline
Refuel
Drainfueltankandcarburetor
Refuelwithfreshgasoline
4. Removeandinspect
sparkplugs
Sparkplugsfaulty,fouled,orimproperly
gapped
6SDUNSOXJVZHWZLWKIXHOćRRGHG
engine)
Gap,orreplacesparkplugs
DryandreinstallsparkplugsStart
enginewiththrottleleverinFAST
position
5. Takeenginetoan
authorizedservicing
dealer,orrefertomanual
)XHOĆOWHUFORJJHGFDUEXUHWRU
malfunction,ignitionmalfunction,valve
stuck,etc
Replaceorrepairfaultycomponents
asnecessary
EngineLacks Power Possible Cause Correction
&KHFNDLUĆOWHU Filterelement(s)clogged &OHDQRUUHSODFHĆOWHUHOHPHQWV
2. Checkfuel
Outoffuel
Badfuel;enginestoredwithouttreating
ordraininggasoline,orrefueledwith
badgasoline
Refuel
Drainfueltankandcarburetor
Refuelwithfreshgasoline
3. Takeenginetoan
authorizedservicing
dealer,orrefertomanual
)XHOĆOWHUFORJJHGFDUEXUHWRU
malfunction,ignitionmalfunction,valve
stuck,etc
Replaceorrepairfaultycomponents
asnecessary
16
GasolineEngine
»
Operator’sManual
Storage
|

TECHNICAL&CONSUMERINFORMATION
CARBURETORMODIFICATIONFORHIGHALTITUDEOPERATION
SOURCEOFEMISSIONS
PROBLEMSTHATMAYAFFECTEMISSIONS
REPLACEMENTPARTS
TAMPERINGANDALTERING
At high altitude, the standard carburetor air-fuel mixture will be
too rich. Performance will decrease, and fuel consumption will
increase. A very rich mixture will also foul the spark plug and
causehardstarting.Operationatanaltitudethatdiffersfromthat
DWZKLFK WKLVHQJLQHZDV FHUWLĆHGIRUH[WHQGHGSHULRGVRIWLPH
mayincrease emissions.
+LJK DOWLWXGH SHUIRUPDQFH FDQ EH LPSURYHG E\ VSHFLĆF
PRGLĆFDWLRQVWRWKHFDUEXUHWRU,I\RXDOZD\VRSHUDWH\RXUHQJLQH
at altitudes above 5,000 feet (1,500 meters), have your servicing
GHDOHU SHUIRUP WKLV FDUEXUHWRU PRGLĆFDWLRQ 7KLV HQJLQH ZKHQ
RSHUDWHG DW KLJK DOWLWXGH ZLWK WKH FDUEXUHWRU PRGLĆFDWLRQV IRU
highaltitudeuse,willmeeteachemissionstandardthroughoutits
usefullife.
(YHQ ZLWK FDUEXUHWRU PRGLĆFDWLRQ HQJLQH KRUVHSRZHU ZLOO
GHFUHDVHDERXWIRUHDFKIRRWPHWHULQFUHDVHLQ
altitude.Theeffect ofaltitudeonhorsepowerwillbegreater than
WKLVLIQRFDUEXUHWRUPRGLĆFDWLRQLVPDGH
The combustion process produces carbon monoxide, oxides of
nitrogen, and hydrocarbons. Control of hydrocarbons and oxides
of nitrogen is very important because, under certain conditions,
they react to form photochemical smog when subjected to
sunlight. Carbon monoxide does not react in the same way, but it
istoxic.
This utilizes lean carburetor settings and other systems to
reduce the emissions of carbon monoxide, oxides of nitrogen and
hydrocarbons.
If you are aware of any of the following symptoms, have your
engineinspectedand repairedbyyourservicingdealer.
Hardstartingor stallingafterstarting.
Roughidle.
0LVĆULQJRUEDFNĆULQJXQGHUORDG
$IWHUEXUQLQJEDFNĆULQJ
Blackexhaustsmokeorhighfuel consumption.
We recommend the use of genuine parts whenever you have
maintenance done. These original-design replacement parts are
manufactured to the same standards as the original parts, so you
FDQ EH FRQĆGHQW RI WKHLU SHUIRUPDQFH 7KH XVH RI UHSODFHPHQW
partsthatarenotoftheoriginaldesignandqualitymayimpairthe
effectivenessof youremissioncontrol system.
Amanufacturerofanaftermarketpartassumestheresponsibility
that the part will not adversely affect emission performance. The
manufacturer or rebuilder of the part must certify that use of
the part will not result in a failure of the engine to comply with
emissionregulations.
Tampering with or altering the emission control system may
increase emissions beyond the legal limit. Among those acts that
constitutetamperingare:
Removalor alterationof anypartoftheintake,fuelor exhaust
systems.
Altering or defeating the governor linkage or speed-adjusting
mechanism to cause the engine to operate outside its design
parameters.
Notice:
When the carburetor has been modified for high
altitude operation, the air-fuel mixture will be too
lean for low altitude use. Operation at altitudes
below 5,000 feet (1,500meters) with a modified
carburetor may cause the engine to overheat and
result in serious engine damage. For use at low
altitudes, have your servicing dealer return the
FDUEXUHWRUWRRULJLQDOIDFWRU\VSHFLĆFDWLRQV
MAINTENANCE
Follow the maintenance schedule. Remember that this schedule
is based on the assumption that your machine will be used for
its designed purpose. Sustained high-load or high-temperature
operation,oruseinunusuallywetordustyconditions,willrequire
morefrequentservice.
ENGINETUNE-UP
ITEM SPECIFICATION
Sparkpluggap 0.028-0.031in
(0.70mm-0.80mm)
Valveclearance IN:0.10mm~0.15mm(cold)
EX:0.15mm~0.20mm(cold)
2WKHUVSHFLĆFDWLRQV Nootheradjustmentsneeded
PUBLICATIONS
PARTSCATALOG
These publications will give you additional information for
maintaining and repairing your engine. You may order them from
yourengine dealer.
Thismanualprovidescomplete,illustratedpartslists.
17
|
7HFKQLFDO&RQVXPHU,QIRUPDWLRQ

EngineOil
Sparkpluggap Type SAE5W-30,APISEorSF,forgeneraluse.Refertoengineoilrecommendation.
Capacity 0.35L
Valveclearance
2WKHUVSHFLĆFDWLRQV
Type E7RTCorother equivalents.
Gap 0.028~0.031in(0.70~0.80mm)
Maintenance
Eachuse Checkengineoil.
First20hours Changeengineoil.
Subsequent Refertothemaintenance
QUICKREFERENCE INFORMATION
WIRINGDIAGRAM
B
G
BI
Spark
Plug
Engine
Switch
Transistorized
ignitionunit
BI BLACK
B BLUE
Figure14
18
GasolineEngine
»
Operator’sManual
7HFKQLFDO&RQVXPHU,QIRUPDWLRQ:LULQJ'LDJUDP
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