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Figure35

Note:Duetothedeeprecessaroundthesparkplug,

blowingoutthecavitywithcompressedairisusually

themosteffectivemethodforcleaning.Thesparkplug

ismostaccessiblewhentheblowerhousingisremoved

forcleaning.

CheckingtheSparkPlug

Important:Nevercleanthesparkplug(s).Always

replacethesparkplug(s)whenithas:ablackcoating,

wornelectrodes,anoilylm,orcracks.

Ifyouseelightbrownorgrayontheinsulator,theengineis

operatingproperly.Ablackcoatingontheinsulatorusually

meanstheaircleanerisdirty.

Setthegapto0.030inches(0.76mm).

G008794

Figure36

InstallingtheSparkPlug

Tightenthesparkplug(s)to16ft-lb(22N-m).

16ft-lb

22N-m

G010687

Figure37

CleaningtheCoolingSystem

Cleantheairintakescreenfromgrassanddebrisbeforeeach

use.

1.Disengagethebladecontrolswitchandmovethe

controlleverstotheneutrallockedpositionandapply

theparkingbrake.

2.Stoptheengine,removethekey,andwaitforallmoving

partstostopbeforeleavingtheoperatingposition.

3.Removetheairintakescreen,aircleanercover,and

fanhousing.

4.Cleandebrisandgrassfromtheparts.

5.Installtheairintakescreen,aircleanercover,andfan

housing.

Toro 74390 User Manual

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