Toro Power Clear 721 R-C - Spark Plug Service Details; Spark Plug Removal; Spark Plug Gap Adjustment; Spark Plug Installation

Figure31
1.Screw(4)3.Sparkplug
2.Shroud4.Spark-plugwire
5.Removethefuel-tankcap.
6.Removetheshroud(Figure31).
7.Installthefuel-tankcap.
8.Disconnectthewirefromthesparkplug.
9.Cleanaroundthesparkplug.
10.Removethesparkplugfromthecylinderhead.
Important:Replaceacracked,fouled,ordirty
sparkplug.Donotcleantheelectrodesbecause
gritenteringthecylindercandamagetheengine.
11.Setthegapontheplugto0.76mm(0.030inch)(Figure
32).
Figure32
1.Center-electrodeinsulator3.Airgap(nottoscale)
2.Sideelectrode
12.Installthesparkplugandtorqueitto27to30N-m
(20to22ft-lb).
13.Connectthewiretothesparkplug.
Note:Ensurethatthebreathertubeisroutedabove
thesparkplugwireasshowninFigure33.
Figure33
1.Breathertube
2.Carburetor-drainbolt
14.Removethefuel-tankcap.
15.Installtheshroudwiththescrewsyouremovedinstep
4.
Note:Ensurethattheupperandlowershroudst
togetherinthesidegrooves.
16.Installthefuel-tankcap.
17.Installthechuteseal,thedischargechute,andthe
dischargechutehandleontothemachineusingthe
hardwareyouremovedinstep3.
Note:Thesmallscrewgoesthroughthesmallhole
inthechutesealatthefrontofthedischargechute
opening.
17