Toro 04357 - Replacing the Spark Plugs; Fuel System Maintenance; Replacing the Fuel Filter; Fuel Lines and Connections

4.Adjusttheidlestopscrewclockwiseuntiltheidle
speedisanadditional25to50RPMovertheidle
speedsetinstep3
5.MovethethrottlecontroltotheFastposition.Bend
thehighspeedspringanchortang(Figure50)to
attainahighspeedof2850±50RPM.
ReplacingtheSparkPlugs
Replacethesparkplugsafterevery800operatinghours.
Therecommendedairgapis0.030in.(0.76mm)
ThecorrectsparkplugtouseisaChampionRC14YC.
Note:Thesparkplugusuallylastsalongtime;however,
theplugshouldberemovedandcheckedwheneverthe
enginemalfunctions.
1.Cleantheareaaroundthesparkplugssoforeign
mattercannotfallintothecylinderwhenthespark
plugisremoved.
2.Pullthesparkplugwiresoffofthesparkplugsand
removetheplugsfromthecylinderhead.
3.Checktheconditionofthesideelectrode,center
electrode,andcenterelectrodeinsulatortoensure
thatthereisnodamage.
Important:Replaceacracked,fouled,dirty,or
otherwisemalfunctioningsparkplug.Donot
sandblast,scrape,orcleanelectrodesbyusinga
wirebrushbecausegritmayeventuallyrelease
fromtheplug,fallintothecylinder,anddamage
theengine.
4.Settheairgapbetweenthecenterandsideofthe
electrodesat0.030in.(0.76mm)(Figure51).
Figure51
5.Installthecorrectlygappedsparkplugwithgasket
seal,andtightentheplugto200in-lb(23N⋅m).Ifa
torquewrenchisnotused,tightentheplugrmly.
FuelSystem
Maintenance
ReplacingtheFuelFilter
Anin-linelterisincorporatedintothefuellinebetween
thefueltankandcarburetor(Figure52).Replacethe
lterevery800hoursorsoonerifthefuelowis
restricted.Besurethearrowonthelterispointing
awayfromthefueltank.
Incertainconditions,gasolineisextremely
ammableandhighlyexplosive.Areor
explosionfromgasolinecanburnyouand
othersandcandamageproperty.
•Draingasolinefromthefueltankwhenthe
engineiscold.Dothisoutdoorsinanopen
area.Wipeupanygasolinethatspills.
•Neversmokewhendraininggasoline,and
stayawayfromanopenameorwherea
sparkmayignitethegasolinefumes.
1.Closethefuelshutoffvalve,loosenthehoseclamp
onthecarburetorsideoflter,andremovethefuel
linefromthelter(Figure52).
Figure52
1.Fuelshutoffvalve2.Fuellter
2.Placeadrainpanunderthelter,loosenthe
remaininghoseclampandremovethelter
(Figure52).
3.Installthenewlterwiththearrowonthelterbody
pointingawayfromthefueltank.
FuelLinesandConnections
ServiceInterval:Every2years
Inspectthefuellinesfordeterioration,damage,orloose
connections.
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