Toro Air Cool Z Master 74090 - Servicing the Spark Plug

ChangingtheEngine-OilFilter
ServiceInterval:Every200hours—Changethe
engine-oillter(moreoftenindirty
ordustyconditions).
1.Draintheoilfromtheengine;refertoChanging
theEngineOil(page42).
2.Changetheengine-oillter(Figure46).
g299600
Figure46
Note:Ensurethattheoil-ltergaskettouches
theengine,andthenturntheoillteranextra
3/4turn.
3.Fillthecrankcasewiththepropertypeofnew
oil;refertoEngine-OilSpecications(page41).
ServicingtheSparkPlug
ServiceInterval:Every200hours—Checkthespark
plug(s).
Every500hours—Replacethesparkplug(s).
Type:ChampionXC12YC
AirGap:0.76mm(0.03inch)
RemovingtheSparkPlug
1.Parkthemachineonalevelsurface,disengage
theblade-controlswitch(PTO),andengagethe
parkingbrake.
2.Shutofftheengine,removethekey,andwait
forallmovingpartstostopbeforeleavingthe
operatingposition.
3.Cleantheareaaroundthebaseoftheplug(s)to
keepdirtanddebrisoutoftheengine.
4.Locateandremovethesparkplug(s)asshown
inFigure47.
g027478
Figure47
CheckingtheSparkPlug
Important:Donotcleanthesparkplug(s).
Alwaysreplacethesparkplug(s)whenithasa
blackcoating,wornelectrodes,anoilylm,or
cracks.
Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingonthe
insulatorusuallymeanstheaircleanerisdirty.
Setthegapto0.76mm(0.03inch).
g206628
Figure48
43