Toro TimeCutter HD ZX4800 - Servicing the Spark Plug

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Figure39
ServicingtheSparkPlug
ServiceInterval:Every100hours/Yearly(whichevercomes
rst)—Checkthesparkplug(s).
Every200hours/Every2years(whichevercomes
rst)—Replacethesparkplug(s).
Makesurethattheairgapbetweenthecenterandside
electrodesiscorrectbeforeinstallingthesparkplug.Use
aspark-plugwrenchforremovingandinstallingthespark
plug(s)andagappingtool/feelergaugetocheckandadjust
theairgap.Installanewsparkplug(s)ifnecessary.
Type:Champion
®
RN9YCorNGK
®
BPR6ES
Airgap:0.76mm(0.03inch)
RemovingtheSparkPlug
1.DisengagethePTOandensurethattheparkingbrake
isengaged.
2.Shutofftheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
B
A
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Figure40
Note:Duetothedeeprecessaroundthesparkplug,
blowingoutthecavitywithcompressedairisthemost
effectivemethodforcleaning.Thesparkplugismost
accessiblewhentheblowerhousingisremovedfor
cleaning.
CheckingtheSparkPlug
Important:Donotcleanthesparkplug(s).Always
replacethesparkplug(s)whenithas:ablackcoating,
wornelectrodes,anoilylm,orcracks.
Ifyouseelightbrownorgrayontheinsulator,theengineis
operatingproperly.Ablackcoatingontheinsulatorusually
meanstheaircleanerisdirty.
Setthegapto0.76mm(0.03inch).
B
A
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Figure41
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