Operator's Manual

CheckingtheSparkPlug
Note:Useagappingtool/feelergaugetocheckandadjust
thegap.Installanewsparkplugifnecessary.
1.Lookatthecenterofthesparkplug(Figure46).Ifyou
seelightbrownorgrayontheinsulator,theengineis
operatingproperly.
Important:Nevercleanthesparkplug.Always
replacethesparkplugwhenithasablackcoating,
wornelectrodes,anoilylm,orcracks.
G019300
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4
3
Figure46
1.Sideelectrode
3.Insulator
2.Centerelectrode4.0.7to0.8mm(0.028to
0.031inch)gap
2.Useagappingtoolforsparkplugsorafeelergaugeto
measurethegapbetweenthesideelectrodeandcenter
electrode(Figure46).
3.Ifthegapisnotwithinthespeciedrange,dothe
following:
A.Ifthegapistoosmall,carefullybendtheside
electrodeawayfromthecenterelectrodeuntil
thegapbetweentheelectrodesis0.7to0.8mm
(0.028to0.031inch).
B.Ifthegapistoolarge,carefullybendtheside
electrodetowardthecenterelectrodeuntilthe
gapbetweentheelectrodesis0.7to0.8mm(0.028
to0.031inch).
InstallingtheSparkPlug
Important:Ensurethatthegapbetweenthesideand
centerelectrodesiscorrectbeforeinstallingthespark
plug.
1.Threadthesparkplugclockwiseintothespark-plug
holebyhand.
Note:Avoidcross-threadingthesparkplugwiththe
threadsofthespark-plughole.
2.Rotatethesparkplugclockwiseusinga13/16inch
(21mm)spark-plugwrenchuntiltheplugandsealing
washerareseated(Figure45).
3.Tightenthesparkplugasfollows:
•Wheninstallinganin-servicesparkplug,tighten
thepluganadditional1/8to1/4turn.
•Wheninstallinganewsparkplug,tightentheplug
anadditional1/2turn.
4.Pushthespark-plugwireontotheterminalofthespark
plug(Figure44).
ServicingtheSparkArrester
CleaningtheSparkArrester
ServiceInterval:Every100hours
Note:Asparkarresterisavailableasanoption.Ifyou
requireasparkarrester,contactyourAuthorizedToroService
Dealer.
GenuineTorosparkarrestersareapprovedbytheUSDA
ForestryService.
WARNING
Iftheenginehasbeenrunning,themuferwillbe
hot.
1.Removethedividerplate;refertoRemovingthe
DividerPlate(page24).
2.Removethe2nuts(8mm)andremovethemufer
fromthecylinder(Figure47).
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10
1
2
3
4
5
6
7
8
9
11
12
Figure47
1.Deector(if
applicable)
5.Exhaustpipe
9.Sparkarrester
2.Protector
6.Nut,8mm(2)10.Screws(5mm)
3.Screw(6mm)7.Gasket
11.Exhaustport
4.Mufer8.Bolt(8mm)12.Screw(4mm)
29