Toro TimeCutter SWX 4250 - Servicing the Spark Plug

B
A
C
D
E
F
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Figure33
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.DisengagethePTOandengagetheparkingbrake.
2.Shutofftheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
B
A
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Figure34
Note:Duetothedeeprecessaroundthesparkplug,
blowingoutthecavitywithcompressedairisusually
themosteffectivemethodforcleaning.Thesparkplug
ismostaccessiblewhentheblowerhousingisremoved
forcleaning.
CheckingtheSparkPlug
Important:Donotcleanthesparkplug(s).Always
replacethesparkplug(s)whenithas:ablackcoating,
wornelectrodes,anoilylm,orcracks.
Ifyouseelightbrownorgrayontheinsulator,theengineis
operatingproperly.Ablackcoatingontheinsulatorusually
meanstheaircleanerisdirty.
Setthegapto0.76mm(0.030inch).
B
A
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Figure35
InstallingtheSparkPlug
Tightenthesparkplug(s)to25to30N∙m(18.5to22.1ft-lb).
B
A
25-30 N-m
18.5-22.1 ft-lb
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C
D
Figure36
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