Operator's Manual

g019300
Figure33
1.Sideelectrode
3.Insulator
2.Centerelectrode4.0.70to0.80mm(0.028to
0.031inch)
5.Installthecorrectlygappedsparkplugcarefully
byhandtoavoidcross-threading.
6.Afterthesparkplugisseated,tightenitwitha
spark-plugwrenchasfollows:
•Wheninstallinganewsparkplug,tighten
it1/2turnafterthesparkplugseats,to
compressthegasket.
•Wheninstallingtheoriginalsparkplug,
tightenit1/8to1/4turnafterthesparkplug
seats,tocompressthegasket.
Important:Aloosesparkplugcanoverheat
anddamagetheengine.Overtighteningthe
sparkplugcandamagethethreadsinthe
cylinderhead.
7.Connectthespark-plugwiretothesparkplug.
CheckingandAdjustingthe
ValveClearance
ServiceInterval:Every300hours
Important:RefertoyourauthorizedToro
distributorforservice.
FuelSystem
Maintenance
CleaningtheSedimentCup
ServiceInterval:Every100hours—Cleanthe
sedimentcup.
1.Preparethemachineformaintenance;referto
PreparingforMaintenance(page22).
2.Movethefuel-shutoffvalvetotheOFFposition
(Figure34).
g025917
Figure34
1.Fuel-shutoffvalve3.Sedimentcup
2.O-ring
3.RemovethefuelsedimentcupandO-ring
(Figure34).
4.ChecktheO-ringforwearanddamage;replace
theO-ringifitiswornordamaged.
5.WashthesedimentcupandO-ringin
nonammablesolvent,anddrythemthoroughly.
6.PlacetheO-ringinthefuel-shutoffvalveand
installthesedimentcup(Figure34).Tightenthe
sedimentcupsecurely.
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