Toro 07266 - Servicing Spark Plugs (Models 07273;TC)

Figure30
1.Centerelectrodeinsulator3.Airgap(nottoscale)
2.Sideelectrode
4.Settheairgapbetweenthecenterandsideofthe
electrodesat0.030inch(0.762mm)(Figure30).
Installthecorrectlygappedsparkplugandtighten
theplugto14ft-lb(20N-m).
5.Installthesparkplugwires.
ServicingtheSparkPlugs
(Models07273/TConly)
ServiceInterval:Every800hours
Replacethesparkplugsafterevery800operatinghours
oryearly,whicheveroccursrst,toensureproperengine
performanceandreducetheexhaustemissionlevel.
Type:ChampionRC14YC(orequivalent)
AirGap:0.030inch(0.762mm)
Note:Thesparkplugsusuallylastalongtime;however,
theplugsshouldberemovedandcheckedwheneverthe
enginemalfunctions.
1.Cleantheareaaroundthesparkplugssothatforeign
mattercannotfallintothecylinderwhenthespark
plugisremoved.
2.Pullthesparkplugwiresoffofthesparkplugsand
removetheplugsfromthecylinderhead.
3.Checktheconditionofthesideelectrode,center
electrode,andcenterelectrodeinsulatortoensure
thatthereisnodamage(
Figure30).
Figure31
1.Centerelectrodeinsulator3.Airgap(nottoscale)
2.Sideelectrode
Important:Acracked,fouled,dirty,or
malfunctioningsparkplugmustbereplaced.Do
notsand-blast,scrape,orcleantheelectrodesby
usingawirebrushbecausegritmayeventually
releasefromtheplugandfallintothecylinder.
Theresultisusuallyadamagedengine.
4.Settheairgapbetweenthecenterandsideelectrodes
at0.030inch(0.762mm)(
Figure30).
5.Installthecorrectlygappedsparkplugandtighten
theplugto18-22ft-lb(24-30N-m).Ifatorque
wrenchisnotused,tightentheplugrmly.
6.Installthesparkplugwires.
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