Toro TimeCutter MX 3450 - Spark Plug Maintenance; Spark Plug Service, Removal, and Installation

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A
C
D
E
F
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Figure34
ServicingtheSparkPlug
ServiceInterval:Every50hours—Checkthesparkplug.
Every100hours—Replacethesparkplug.
Ensurethattheairgapbetweenthecenterandsideelectrodes
iscorrectbeforeinstallingthesparkplug.Useasparkplug
wrenchforremovingandinstallingthesparkpluganda
gappingtoolorfeelergaugetocheckandadjusttheairgap.
Installanewsparkplugifnecessary.
Type:Champion
®
RC12YC,Autolite
®
3924,orNGK
®
BCPR6ES
AirGap:0.76mm(0.03inch)
RemovingtheSparkPlug
1.Disengagetheblade-controlswitch,movethemotion
controlsoutwardtothePARKposition,shutoffthe
engine,andremovethekey.
2.Beforeremovingthesparkplug(s),cleanthearea
aroundthebaseoftheplugtokeepdirtanddebrisout
oftheengine.
3.Removethesparkplug(Figure35).
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Figure35
CheckingtheSparkPlug
Important:Donotcleanthesparkplug(s).Always
replacethesparkplug(s)whenithas:ablackcoating,
wornelectrodes,anoilylm,orcracks.
Note:Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingontheinsulator
usuallymeanstheaircleanerisdirty.
Setthegapto0.76mm(0.030inch).
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A
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Figure36
InstallingtheSparkPlug
Tightenthesparkplugto20N•m(15ft-lb).
Figure37
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