Toro 74902TE - Servicing the Spark Plug

ServicingtheSparkPlug
ServiceInterval:Every100hours
Makesuretheairgapbetweenthecenterandside
electrodesiscorrectbeforeinstallingthesparkplug.
Useasparkplugwrenchforremovingandinstalling
thesparkplug(s)andagappingtool/feelergaugeto
checkandadjusttheairgap.Installanewspark
plug(s)ifnecessary.
TypeofSparkPlug:NGK
®
BPR4ESorequivalent
AirGap:0.75mm(0.030inch)
RemovingtheSparkPlugs
Important:Thefastenersonthecoversofthis
machinearedesignedtoremainonthecover
afterremoval.Loosenallofthefastenerson
eachcoverafewturnssothatthecoverisloose
butstillattached,thengobackandloosenthem
untilthecovercomesfree.Thispreventsyou
fromaccidentallystrippingtheboltsfreeofthe
retainers.
1.Shutofftheengine,removethekey,andwait
forallmovingpartstostopbeforeleavingthe
operatingposition.
2.Disengagetheblade-controlswitch(PTO),move
themotion-controlleverstotheNEUTRAL-LOCK
position,andsettheparkingbrake.
3.Removethehydraulic-unitshroudandthe2
boltsattachedtoit(Figure55).
Note:Thisgivesyouaccesstothefrontspark
plug.
g012432
Figure55
1.Hydraulic-unitshroud2.Loosenthese2bolts
4.Removethesparkplugs.
g015124
g027478
Figure56
5.Installtheleft-handhydraulic-unitshroud(Figure
55).
CheckingtheSparkPlug
Important:Nevercleanthesparkplug(s).Always
replacethesparkplug(s)whenithas:ablack
coating,wornelectrodes,anoilylm,orcracks.
Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingonthe
insulatorusuallymeanstheaircleanerisdirty.
Setthegapto0.76mm(0.030inches).
g027479
Figure57
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