InstallingtheSparkPlug
Tightenthesparkplug(s)to25to29N∙m(18to
22ft-lb).
g027938
Figure39
CleaningtheBlower
Housing
Toensurepropercooling,makesurethatthegrass
screen,coolingns,andotherexternalsurfacesofthe
enginearekeptcleanatalltimes.
Annually,orevery100hoursofoperation(moreoften
underextremelydusty,dirtyconditions),removethe
blowerhousingandanyothercoolingshrouds.Clean
thecoolingnsandexternalsurfacesasnecessary.
Makesurethatthecoolingshroudsareinstalled.
Torquetheblowerhousingscrewsto7.5N·m(5.5
ft-lb).
Important:Operatingtheenginewithablocked
grassscreen,dirtyorpluggedcoolingns,and/or
coolingshroudsremoved,causesenginedamage
duetooverheating.
FuelSystem
Maintenance
DANGER
Incertainconditions,fuelisextremely
ammableandhighlyexplosive.Areor
explosionfromfuelcanburnyou,others,and
candamageproperty.
•Performanyfuel-relatedmaintenance
whentheengineiscold.Dothisoutdoors
inanopenarea.Wipeupanyfuelthat
spills.
•Neversmokewhendrainingfuel,andstay
awayfromanopenameorwhereaspark
mayignitethefuelfumes.
ReplacingtheIn-LineFuel
Filter
ServiceInterval:Every100hours—Replacethe
in-linefuellter.
Neverinstalladirtylterifitisremovedfromthefuel
line.
1.Parkthemachineonalevelsurfaceand
disengagetheblade-controlswitch.
2.Movethemotion-controlleversoutwardtothe
PARKposition,shutofftheengine,removethe
key,andwaitforallmovingpartstostopbefore
leavingtheoperatingposition.
3.Replacethein-linelter(Figure40).
32