Lawn-Boy 17739 - Replacing the Blade; Adjusting the Self-Propel Drive

•Iftheoillevelislow,addasmallamountofoil
slowlytotheoil-lltube,andthenrepeatsteps
6through8untiltheoillevelonthedipstickis
correct.
•Iftheoillevelishigh,draintheexcessoiluntilthe
oillevelonthedipstickiscorrect.
Important:Iftheoillevelinthecrankcaseis
toolowortoohighandyouruntheengine,
youmaydamagetheengine.
9.Installthedipsticksecurely.
10.Recycletheusedoilproperly.
ReplacingtheBlade
ServiceInterval:Yearly
Important:
Y ou will need a torque wr ench to install the
blade pr oper l y .Ifyoudonothaveatorquewrenchor
areuncomfortableperformingthisprocedure,contact
anAuthorizedServiceDealer.
Examinethebladewheneveryourunoutofgasoline.Ifthe
bladeisdamagedorcracked,replaceitimmediately.Ifthe
bladeedgeisdullornicked,haveitsharpenedorreplaceit.
1.Disconnectthespark-plugwirefromthesparkplug.
RefertoPreparingforMaintenance(page11).
2.Tipthemachineontoitsside,withtheairlterup.
3.Useablockofwoodtoholdthebladesteady.
4.Removetheblade(turnthebladebolt
counterclockwise),savingallthemounting
hardware.
5.Installthenewblade(turnthebladeboltclockwise)
andallmountinghardware(Figure23).
Figure23
Important:Positionthecurvedendsoftheblade
topointtowardthemachinehousing.
6.Useatorquewrenchtotightenthebladeboltto82
N-m(60ft-lb).
Important:Abolttorquedto82N-m(60ft-lb)is
verytight.Whileholdingthebladewithablock
ofwood,putyourweightbehindtheratchetor
wrenchandtightentheboltsecurely.Thisboltis
verydifculttoovertighten.
AdjustingtheSelf-PropelDrive
Wheneveryouinstallanewself-propelcableorifthe
self-propeldriveisoutofadjustment,adjusttheself-propel
drive.
1.Turntheadjustmentknobcounterclockwisetoloosen
thecableadjustment(Figure24).
1
2
3
4
5
g027235
Figure24
1.Handle(leftside)
4.Turntheknobclockwiseto
tightentheadjustment.
2.Adjustmentknob5.Turntheknob
counterclockwiseto
loosentheadjustment.
3.Self-propel-drivecable
2.Adjustthetensiononthecable(Figure24)bypullingit
backorpushingitforwardandholdingthatposition.
Note:Pushthecabletowardtheenginetoincrease
thetraction;pullthecableawayfromtheengineto
decreasethetraction.
3.Turntheadjustmentknobclockwisetotightenthe
cableadjustment.
Note:Tightentheknobrmlybyhand.
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