Toro 37781 - Replacing the Spark Plug

LubricatingtheHexShaft
ServiceInterval:Yearly—Lubricatethehexshaft.
Lightlylubricatethehexshaftyearlywithautomotiveengine
oil(Figure41).
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Figure41
1.Hexshaft
3.Rubberwheel
2.Steelfrictionpulley
Important:Donotgetoilontherubberwheelorthe
steelfrictionpulleybecausethetractiondrivewillslip
(Figure41).
1.Drainthefuelfromthefueltank.
2.Tipthemachineforwardontoitsaugerhousingand
blockitsothatitcannotfall.
3.Removethebackcover(Figure42).
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1
Figure42
1.Screws
4.Movethespeed-selectorlevertoPositionR2.
5.Dipyourngerinautomotiveengineoilandlightly
lubricatethehexshaft.
6.Movethespeed-selectorlevertoPosition6.
7.Lubricatetheotherendofthehexshaft.
8.Movethespeed-selectorleverforwardandrearward
afewtimes.
9.Installthebackcoverandreturnthemachinetothe
operatingposition.
ReplacingtheSparkPlug
ServiceInterval:Every100hours—Replacethesparkplug.
WARNING
Replacingthesparkplugwhiletheengineishot
canresultinburns.
Waituntiltheengineiscooltoreplacethespark
plug.
UseaTorosparkplugorequivalent(Champion®RN9YCor
NGKBPR6ES).
1.Removetheboot(Figure43).
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1
Figure43
1.Spark-plugboot
2.Cleanaroundthebaseofthesparkplug.
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Figure44
3.Removeanddiscardtheoldsparkplug.
Note:Youwillneedaratchetwrenchextensionto
removethesparkplug.
4.Setthegapbetweentheelectrodesonanewsparkplug
at0.76mm(0.030inch)asshowninFigure45.
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