Toro 74991 - Checking the Spark Plugs; Installing the Spark Plugs

g029645
g009919
Figure56
1.Pullthistabouttothe
sideinthedirectionofthe
arrow.
3.Pulltheshroudoffofthis
frametabinthedirection
ofthearrow.
2.Pulltheshroudoffofthis
frametabinthedirection
ofthearrow.
4.Shroud
4.Removethesparkplugs.
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g027478
Figure57
5.Installthelefthandhydraulicunitshroud(Figure
56).
CheckingtheSparkPlugs
Important:Replacethesparkplugswhenthey
have:ablackcoating,wornelectrodes,anoily
lm,cracksorreuseisquestionable.
Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingonthe
insulatorusuallymeansthattheaircleanerisdirty.
Setthegapto0.76mm(0.030inch).
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Figure58
InstallingtheSparkPlugs
Tightenthesparkplugsto24.4to29.8N-m(18to
22ft.-lb).
g027735
Figure59
44