Figure22
3.Installanewairlterandtheairltercover.
ChangingtheEngineOil
ServiceInterval:Aftertherst5hours
Every50hours
Runtheengineafewminutesbeforechangingtheoil
towarmit.Warmoilowsbetterandcarriesmore
contaminants.
1.Performthepre-maintenanceprocedures;referto
PreparingforMaintenance.
2.Ifthegrassbagisonthemower,removeit.
3.Drainthegasolinefromthefueltank;referto
EmptyingtheFuelTank.
4.Removethedipstick(Figure6).
5.Removethedipstickfromoillltubeandplace
adrainpannexttotheleftsideofthemower
(Figure23).
Figure23
6.Afterdrainingtheoil,returnthemowertoits
operatingposition.
7.Slowlypouroilintotheoillltubeuntiltheoillevel
reachestheFullmarkonthedipstick(Figure6).
Donotoverll.(Max.ll:0.59l,type:SAE30
detergentoilwithanAPIserviceclassicationofSF,
SG,SH,SJ,SL,orhigher.)
8.Installthedipsticksecurely.
9.Wipeupanyspilledoil.
10.Disposeoftheusedoilproperlyatalocalrecycling
center.
ChargingtheBattery
ServiceInterval:Every25hours—Chargethebattery
for24hours(model20638only).
Model20638only
Alwaysusethechargerinashelteredareaandchargethe
batteryatroomtemperature(22°C)wheneverpossible.
1.Connectthechargertothemowerwireharness
locatedbelowtheignitionkey(Figure24).
Figure24
2.Plugthechargerintoawalloutlet.
Note:Whenthebatterynolongerholdsacharge,
recycleordisposeofthelead-acidbatteryaccording
tolocalcodes.
ReplacingtheFuse
Model20638only
Ifthebatterydoesnotchargeortheenginedoesnotrun
withtheelectricstarter,thefusemaybeblown.Replace
itwitha40-ampplug-intypefuse.RefertoInstalling
theFuse.
12