Toro 22296 - Spark Plug Service and Drive Maintenance; Servicing the Spark Plug; Adjusting the Self-Propel Drive

ServicingtheSparkPlug
ServiceInterval:Every100hours—Inspect,clean,and
adjustthesparkpluggap;replacethe
sparkplugifnecessary.
UseanNGKBPR5ESsparkplugorequivalent.
1.Stoptheengineandwaitforallmovingpartstostop.
2.Disconnectthewirefromthesparkplug.
3.Cleanaroundthesparkplug.
4.Removethesparkplugfromthecylinderhead.
Important:Replaceacracked,fouled,ordirty
sparkplug.Donotcleantheelectrodesbecause
gritenteringthecylindercandamagetheengine.
5.Setthegapontheplugto0.76mm(0.030inch);refer
toFigure23.
Figure23
1.Center-electrodeinsulator
2.Sideelectrode
3.Airgap(nottoscale)
6.Carefullyinstallthesparkplugbyhand(toavoidcross
threading)untilitishandtight.
7.Tightenthesparkplugto23N-m(2.3kgf-m,17ft-lb).
Important:Aloosesparkplugcanbecomevery
hotandcandamagetheengine;overtighteninga
sparkplugmaydamagethethreadsinthecylinder
head.
8.Connectthewiretothesparkplug.
DriveSystem
Maintenance
AdjustingtheSelf-PropelDrive
Ifthemachineisnew,doesnotself-propel,orittendsto
creepforward,adjustthedrivecable.
1.Movethemachineoutsideandontoapavedsurface
nearasolidwalltosafelypreventthemachinefrom
movingforwardwhiletheengineisrunning.
2.Positionthemachinewiththefronttiresagainstthe
wall.
Note:Ensurethattheareaiswellventilatedandclear
ofdebristhatcouldbethrownbythemachine.
3.Shiftthetransmissiontothirdgear.
4.Starttheengine;refertoStartingtheEngine(page12).
5.Pulltheself-propel-drivebartothehandle.
Note:Thewheelsshouldstarttoturnasthe
self-propel-drivebarjusttouchesthehandle.
6.Shutofftheengine.
7.Ifyoumustadjustthemachine,dothefollowing:
•Ifthewheelsdonotspinwhenyouengagethe
self-propel-drivebar,thetractionbeltistooloose.
Rotatethewheel-drive-controlknob(Figure24)
clockwise1turnandrepeatsteps4through6.
Figure24
1.Wheel-drive-controlknob
•Ifthewheelsspinbeforeyoufullyengagethe
self-propel-drivebar,thetractionbeltistootight.
Rotatethewheel-drive-controlknob(Figure24)
counterclockwise1turnandrepeatsteps4through
6.
8.Foranewtractionbelt,rotatethedrivecable
adjustmentknobclockwise1additionalturntoallow
forthenormalstretchingofthebeltduringthebreak-in
period.
Note:Youcanskipthisstepifyouareadjustinga
usedbelt.
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