Toro MultiPro 1750 - Changing the Spark Plugs

tightenthelteranadditional1/2turn(Figure
43).
6.Fillthecrankcasewiththecorrecttypeofnew
oil;refertoChangingtheEngineOil(page48),
steps8through10.
7.Disposeoftheusedoillteratacertied
recyclingcenter.
ChangingtheSparkPlugs
ServiceInterval:Every200hours
Type:ChampionRC-12YC(orequivalent)
AirGap:0.76mm(0.030inch)
Makesurethattheairgapbetweenthecenterand
sideelectrodesiscorrectbeforeinstallingthespark
plugs.Useaspark-plugwrenchforremovingand
installingthesparkplugsandagappingtool/feeler
gaugetocheckandadjusttheairgap.
RemovingtheSparkPlugs
1.Positionthemachineonalevelsurface,engage
theparkingbrake,shutoffthesprayerpump,
shutofftheengine,andremovethekey.
2.Releasethelatchonthebackoftheseatandlift
theseatforward.
3.Pullthewiresoffthesparkplugs(Figure44).
4.Cleanaroundthesparkplugstopreventdirt
fromfallingintotheengineandpotentially
causingdamage.
5.Removethesparkplugsandmetalwashers.
g001985
Figure44
1.Spark-plugwire2.Sparkplug
CheckingtheSparkPlugs
1.Lookatthecenterofthesparkplugs(Figure45).
Note:Ifyouseealightbrownorgraycoating
ontheinsulator,theengineisoperatingproperly.
Ablackcoatingontheinsulatorusuallymeans
thattheaircleanerisdirty.
Important:Donotcleanthesparkplugs.
Alwaysreplaceasparkplugwhenithasa
blackcoating,wornelectrodes,anoilylm,
orcracks.
2.Checkthegapbetweenthecenterandside
electrodes(Figure45)andbendtheside
electrode,ifthegapisnotcorrect.
g000533
Figure45
1.Center-electrodeinsulator3.Airgap(nottoscale)
2.Sideelectrode
InstallingtheSparkPlugs
1.Installthesparkplugsandmetalwashers.
2.Tightenthesparkplugsto24.4to29.8N∙m(18
to22ft-lb).
3.Pushthewiresontothesparkplugs(Figure44).
4.Closeandlatchtheseat.
49