Toro 74642 - Cleaning the Blower Housing; Fuel System Maintenance; Replacing the In-Line Fuel Filter

CheckingtheSparkPlug
Important:Donotcleanthesparkplug(s).Always
replacethesparkplug(s)whenithas:ablackcoating,
wornelectrodes,anoilylm,orcracks.
Ifyouseelightbrownorgrayontheinsulator,theengineis
operatingproperly.Ablackcoatingontheinsulatorusually
meanstheaircleanerisdirty.
Setthegapto0.76mm(0.030inch).
G008794
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Figure33
InstallingtheSparkPlug
1.Installthesparkplug.
Note:Makesurethattheairgapissetcorrectly.
2.Tightenthesparkplugto25to29N-m(18to22ft-lb).
3.Pushthewireontothesparkplug(
Figure32).
CleaningtheBlowerHousing
Toensurepropercooling,makesurethegrassscreen,cooling
ns,andotherexternalsurfacesoftheenginearekeptclean
atalltimes.
Annually,orevery100hoursofoperation(moreoften
underextremelydusty,dirtyconditions),removetheblower
housing,andanyothercoolingshrouds.Cleanthecooling
nsandexternalsurfacesasnecessary.Makesurethatthe
coolingshroudsareinstalled.Torquetheblowerhousing
screwsto7.5N-m(5.5ft-lb).
Important:Operatingtheenginewithablockedgrass
screen,dirtyorpluggedcoolingns,and/orcooling
shroudsremoved,willcauseenginedamagedueto
overheating.
FuelSystem
Maintenance
DANGER
Incertainconditions,gasolineisextremely
ammableandhighlyexplosive.Areorexplosion
fromgasolinecanburnyouandothersandcan
damageproperty.
•Performanyfuelrelatedmaintenancewhenthe
engineiscold.Dothisoutdoorsinanopenarea.
Wipeupanygasolinethatspills.
•Neversmokewhendraininggasoline,andstay
awayfromanopenameorwhereasparkmay
ignitethegasolinefumes.
ReplacingtheIn-lineFuel
Filter
ServiceInterval:Every100hours—Replacethein-linefuel
lter.
Neverinstalladirtylterifitisremovedfromthefuelline.
1.Parkthemachineonalevelsurfaceanddisengagethe
blade-controlswitch.
2.Movethemotion-controlleversoutwardtothepark
position,stoptheengine,removethekey,andwaitfor
allmovingpartstostopbeforeleavingtheoperating
position.
3.Locatethefuellteronthesideoftheengine(Figure
34).
g023859
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4
5
Figure34
1.Fuellinefromtank
4.Fuellinetoengine
2.In-linefuellter
5.Hoseclamp
3.Flow-directionarrow
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