Toro Power Clear 721 QZE - Spark Plug Service; Spark Plug Replacement and Gap Adjustment

ServicingtheSparkPlug
ServiceInterval:Yearly—Checkthesparkplugandreplace
itifnecessary.
UseaNGKBPR6ESorChampionRN9YCsparkplug
orequivalent.
1.Shutofftheengineandwaitforallmovingpartsto
stop.
2.Rotatethedischargechutesothatitfacesforward.
3.Removethedischargechute,thedischargechute
handle,andthechutesealbyremovingthe3large
screwsand1smallscrew(Figure33).
Figure33
1.Fuel-tankcap
4.Smallscrew
2.Largescrews(3)5.Chuteseal
3.Dischargechute
4.Removethe4screwsthatsecuretheshroud(Figure34).
Figure34
1.Screw(4)3.Sparkplug
2.Shroud4.Spark-plugwire
5.Removethefuel-tankcap.
6.Removetheshroud(Figure34).
7.Installthefuel-tankcap.
8.Disconnectthewirefromthesparkplug.
9.Cleanaroundthesparkplug.
10.Removethesparkplugfromthecylinderhead.
Important:Replaceacracked,fouled,ordirty
sparkplug.Donotcleantheelectrodesbecause
gritenteringthecylindercandamagetheengine.
11.Setthegapontheplugto0.030inch(0.76mm)as
showninFigure35.
Figure35
1.Center-electrodeinsulator3.Airgap(nottoscale)
2.Sideelectrode
12.Installthesparkplugandtorqueitto20to22ft-lb
(27to30N-m).
15