Lawn-Boy Silver Series 10270 User manual

21"$iluen $erie$-
MowGFWRear
oo''l
t-rrqu
8.5hp4-Gycle
EnUine rg^t=n
Uaniable
$peed$elt-Pnopel
S-in-l Standand-Mulch/side
llischange/Rean
Bas |0382
\
SeeOwner's
Manuallnside
for WarrantyDetails IIIII''.
ZXear
w
Easyto Start
4-Cycle
6.5
hpEngine
14-GaugeSteelDeck-
Lightweight
yet Durable
EasyMulch'
Cutting
$ystem
PatentedTri-CutrMbladeand
deckdesigncutsgrassinto fine
mulchhelpingto hideand bury
clippings
into the lawn.
Exclusive Staggered
Wheel Deck for Gloser
Trimming
#
tq,,&iF '
:#
F'
Mulch,Side
DischargeandRearBag
Standard;NoTools
Needed
NationwideGu$tomen$envice
|-800-tB-M0WtR Uisitoun
Web$ite:
www.lawn-boy.Gom

LMN-B(lY
Silver
SeriesE
Walk
Power
LawnMower
1O27O-210000001
andUp
10360-210000001
andUp
10361-210000001
andUp
10362-210000001
andUp
10363-210000001
and
Up
Operator's
Manual
Para
obtenerunaversion
gratis
deestemanual
enespariol,escriba
a la direccion
indlcada
mAs
abajo.Aseg0rese
deindicar
elmodelo
y eln0mero
deseriedesuproducto.
Pour
obtenir
gratuitement
uneversion
en
franEais
decemanuel,
6crivezd I'adresse
ci-dessous.N'oubliez
pas
d'indiquerles
num6rosdemoddle
etdes6riedevotre
produit.
Lawn-Boy
Inc.,
Attn:Parls
Dept.,8111
LyndaleAve
S,
Bloomington,
MN 55420-1196.
FormNo.3325486
DomesticEnqlish(EN)

Contents Page
Introduction 2
Satetv.
Gcncral
LawnMowcr
Saltty.
Salbtvand
InstructionDecals
Asscmblv
TheLawn-Boy
No-WorryWarrantl' l,S
Introduction
Readthis
manual
carefully
tolcarnhowtooperateand
maintain
vour
productproperly.Theintirrmationinthis
manual
can
help
you
andothersavoid
iniurvandproduct
damagc.
Although[-awn-Boydcsigns
and
produces
safe
products,vouarere
sponsiblefbroperatingthe
product
properly
andsafcly.
Whcnsveryounced
scrvicc,gcnuineLawn-Bov
parts.
or
additionalinfbrmation.
contactanAuthorizcdScrvicc
Dealcr
urLawn-Bov CustomerServiccand
havethc
modcland
serialnumbcrsof yourproductreadr.I''igurcI
illustratcs
thcl<lcationofthcmode
Iand scrialnumberson
theproduct.
<,*-*a"'- 1
r064
Figure1
1. Location
ofthemodelandsenal
numbers
Writethe
product
modcland
scrialnumbcrsinthespace
bclow:
Model
No.
Serial
No.
Thismanualidcntifies
potcntial
hazurdsundhasspccial
sal'ctymcssagcsthut
helpvou andothersavoid
pcrsonal
in.juryandcvcndcath.
Danger,
Warning,
andCautionarc
signal
wordsuscdtoidcntitythe
lcvclo1'hazard.
Howcvcr,rcgardlcss
ofthc hazard,heextremelycurcful.
Danger
signalsanextrcme
hazardIhaIwillcausesonous
injuryordeath
if vou do
nottirllowtherecommended
precautions.
Warningsignalsa hazardIhirInruycauscscrious
injuryor
dcath
i1'youdonot
tirllowthereconrmendcd
pre
eautions.
Caution
signalsahazardthat
may
cause
minoror
modcrate
injuryif vou donot
fbllow
the
recommended
prccautions.
Thismanualuscstwo
otherwordstohighlight
information.
fffi!fl!fl callsattentiontospecial
mechanical
infbrmationandNote:emphasizcs
general
information
worthyof specialattention.
3
-l
5
Untirldingthe
('hanging
the
Installingthc
Recomnrcndc
Chcckingthc
Cloaningthc
Housing..
Handlc
HandlcI{cight
6
6
6
6
7
7
7
r)
t)
9
(,)
l0
l0
l()
l0
t2
t2
t-l
l-l
l-l
l4
1.5
l-5
t1
Iti
lu
l9
l9
l9
19
20
20
20
20
20
21
2I
2l
/-1
L-)
25
Fuse
Re
Iirru
Starting
IrillingtheCrankcasc
ivith
Oil
FillingthcFuclTank
with
Gasolinc
(
)pcnrtion
Conlrtrls
SturtingtheEngine
StoppingthcLngine
UsingthcSclf-propeIDrivc.
PullingtheLawnMower Re
arward
Adjusting
theCutting
tlcight
Operatinglips ..
Maintenancc d Muinttnunr't'Schedulr
L,ngineOil
Undersidetrl theLuwn Mower
Changing
theEngincOil ...
( lclning
lhu
AirI-iltur.
CllcaningunderthcBelt('ovcr
Mainlaining
thcCulting
Blade
AdjLrstingthcSell'-pr()peIDriveClablc
Lubricutin{
theSelt-propclDrivc
MaintainingtherSparkPlug..
('hlnging
thc
Fusc
(lharging
the
Battcry
Disposingol'theBatterv
EmptyingtheFueIl'ank
Storage
PreparingtheFuelSystem
PreparingthcEngine
GencralInfirrmation
Folding
thc
Handlc
RemovingfromStorage
.\eeesstlnes
InstallingtheRearGrassCatcher....
Installing
theCover
Plate. .
Installing
the
Mulch
Plate.
Tnruhleshooting
...
O2000by Lawn-Boy,lnc.
8111LyndaleAvenueSouth
Bloomington,MN 55420-1 196 2A FlightsReserved
Pr nted n the USA

Safety
This lawnmowermeets
or exceeds
theCPSC
blade
safetvrequirementsfor walk-behind rotarv lawn
mowers
andthe871.1
specifications
of theAmerican
National
Standards
Institute
in effectat thetimeof
production.
Improperly usingor maintaining
thislawn mowercan
result
in injury. To reduce
thepotential
for injury,
comply with thesesafet-v-
instructions.
[-awn-Bov
designe
d and
tested this
lawnmowe
rtrtot'tcr
reasonably
satcscrvicc;
htt'uvever,
J'ailure
tttt'ontplt,n'ilh
tha
Iollowing instruttions
mut result
inper.utnul
injury.
To ensuremaximum safety,
best
performance, and to
gainknowledge
of theproduct,
it isessential
thatyou
andanyotheroperator
of thelawn mower read
and
understandthe contents
of this manual beforethe
engineis
everstarted.
Pay
particular attention
tothe
safety
alert symbol I which means
caution.x,arning,
or danger
- "personal
safety
instruction."
Read
and
understand
theinstruction
becauseit has
to do with
safety.
Failure
to comply
with theinstruction
may
result
in personal
injury.
General
Lawn
Mower
Safety
The
tirllowing
instructions
have
be
e
n
adapte
dfrom thc
ANSI/OPI-.|
standard
87l.l-l99tt andISO
srandard
-539.5:1990(E).
Intirrmation
ortcrminology
specific
to
Lawn-Boy
lawn
mowcrs
is
cncloscdinparcnthcsis.
Thislawn
mower
is
capableotamputating
hands
andtcct
andofthrowing
objccts.Failure
to
ohsgrve
thctollowing
safetv
instructions
couldrcsult
in
scriousinjury
or
dcath.
Training
' Readthis
operator's
manual
carefully.
Bethoroughly
tamiliar
with
thecontrols
and
the
proper
usco1'thc
luwnmower
hclirrc
sttrrting
it.
. Never
allow
children
tooperate
thelawn
mower.
Local
regulations
may
rcstrict
the
ageof theoperator.
. Never
allow
adultsunfamiliar
with
theseinstructions
tooperatc
thelawn
mower.
Nevermow
rvhilc
pcople
(especiallychildren)
or
pets
arc
nearbv.
Stopthelawn
mowerif anvoneenters
thc
area.
Tragic
accide
nts
canoccurif theoperator
isnot
alcrt
tclthe
presence
ofchildren.
Children
are
otle
n
attractedtothelawn
mowcrand
thcmowing
activitr'.
Neverassumc
thatchildrcnwill remainwherc
vou
lasl
sawthem.
Kee
p
childrcnoutofthemowing
arcaand
undcrthc
watchful
carcof aresponsiblc
adult.
Bcalert
andturnthelawn
mowcroffil'childrcn
entcr
thearca.
Usccxtracarewhcn
:rpproaching
blindcorncrs,
shruhs,
trccs,
orothcr
ob.jccts
thatmayobscurc
vision.
Keep
inmind
thattheopcrltor
()r
Ltsr:r isresponsiblc
lirr
accidentsrlrhazards
occurring
toothcrpcople
rtr
thcir
property.
Sccthemanutucturcr's
instructirtns
tirrpropcr
opcration
andinstallatiun
ttf'acccssorie
s.
Usconlv
lhc
accesstlrics
thatareapprovcd
bvthemanufhcturor.
Preparation
. Thoroughly
inspcct
thcarcawhercyou
will uscthe
lawn
mowcr,
andrcmovc
allstones,slicks,wircs,
boncs,andother lirrcignob.jects.
. Whilemowing,
alwayswcar
subslantial
titotwcar
and
Iongtrouscrs.
. Donot
operatcthclawnmowcr
when
harctixtt
or
wearing
opcn
sandals.
. Alwayswcar
salctvgoggle
sorsafctvglasscs
with
sidc
shicldswhen
opcnrtingthclawn
mowcr.
. Warning:
Gasolincishighlyflammahlc.
Tirke
the
tirllowingprocautions:
- Storefuelincontaincrs
spccifically
dcsigned
lilr
this
purposc.
- Rcfue
Ioutdoors
onlyanddrtnot
smokcwhile
refuelling.
- Add fueI befbrcstarting
thccngine
.Nevcr removc
thecapofthefucl
tankoraddgasoline
while
the
cngineisrunning
orwhenthe
cngincishot.
- If gasoline
isspillcd,
donot
atte
mpt
tostart
the
cngine. Mclvc
thelawnmower
awayfrctm
the
area
of spillage
tclavoid
creatinganysource
of ignition
untilthe
gasoline
vapors
have
dissipated.
- Replace
allfuel
tankandcontainer
capssecurely.
- If youmust
drainthefuelfromthefuel
tank,doit
outdoors.
, Replacefaulty
muftlers.
a
Engine
exhaust
contains
carbonmonoxide.
an
odorless,
deadly
poison
that cankill you.
Do notrun theengineindoors
or in anenclosed
area.

. Beforeusing,alwaysvisuallyinspectthebladcs,blade
bolts,andcutterasse
mblyfirrwearclrdamage.
Replace
worn
ordamagcdbladcsandbolts
in
setsto
preservebalance.
. On
multibladedlawnmowers,
usecareas
rotatingonc
bladecancausethe
otherblades
torotate.
Operation
. Donotoperatetheengine
in
aconfinedspace
where
dangerouscarbon
monoxidcfumcs
cancollcct.
. Muwonlyindaylightoringood
artiticial
light.
. Alwaysbcsureof your
fixrtingonslopes.
. Walk;
ncvcrrun.
. KccpaI'irmholdonthchandlc.
. Forwhee
lcd
rotarylawnmowors,mowacrossthc
thce
ol'slopcs,
ncver upanddown.
. Exerciseextreme
caution
whenchangingthedirection
onslopcs.
. Donotmuw
cxccssivcly
stccpslopcs.
. Useextrcmccaution
whcnrcvcrsing
or
pulling
thc
lawnmower toward
you.
. Bcfirrcand
whilc
movingbackward,kxrkbchindand
downfirrsmallchildrcn.
. Stoptheblade(s)
if youmust
tiltthc
lawnmoworfirr
transportation
whcn
crossing
surtaccs
othcrthan
grass
andwhcntransportingthelawnmowertoandfromthe
arcatobcmuwcd.
. Neveropcratethelawnmowerwith damagedor
missing
guards
orshiclds,or
without
satbtydevices
(suchasdgflsctorsand
grass
catchcrs)in
place.
. Do
not
changcthcspcedsettingsonthccnginc.
. Discngagcallbladeanddriveclutchesbefilre
sturting
theengine.
. Startthccnginc
carcl'ullyaccordingtoinstructionsand
witht'cct
wcll away fromthcbladc(s).
. Donot
tiltthe
lawnmowerwhen
startingtheengine,
unless
you
musttiltthelawnmowertostartit.Inthis
case,do
nottiltit morethanabsolutelynecessaryand
lill onlythe
partwhichis
away
fiom theopcrator.
. Do notstarttheenginc
when
standingin front of the
dischargechutc.
. Do not
putyour
handsor f'eetnearor under
rotating
parts.
Keepclearof thcdischargeopeningatalltimes.
. Never
pick
uporcarrya lawnmowerwhile theengine
isrunning.
. Stoptheengineanddisconnectthespark-plug
wire:
- heforeclcaring
hlockagesorunclt'tgging
thechute;
- betbrechecking,
cleaning,ctr
wctrking
onthe
la\\'n
mower;
- aftcr
strikingatbre
ignob.iect.Inspectthelawn
mowerfbrdamageand
makercpairsbeforestarting
andoperating
the
lawnmou'cr;and
- if thc
lawnmowerstartsto
vihratcahnormally
(chcck
itimmediately).
. Stoptheenginc:
- whenever
vouleavethe
lawnmttwer;and
- hcli
rre
rcl-uc
||ing.
. Reduccthcthrottle
settingduringengine
run-outand,
il'theenginc
has
a
shutoff
valvc,
turnthc
fueIotfafier
mowing.
. Stopthe
blade(s)
whcn
crossing
gravcl
drivos,
walks,
or roads.
. Shuttheengine
otTand
wait
until
thebladecomestoa
complete
stopbcfbre
removingthc
grass
cutche
r.
. Donotoperatcthc
lawnmower
whilc
undcr
the
influenceol alcoholordrugs.
. If thc
lawnrnowcr
shouldstartt()
vibrate
abnormally,
stopthecngine
andchcck
inrmetliatclvtirrthccause.
Vbration
isgencrallya
warningoftrouble.
Skrpes
arcamaior
factorrelatedtoslip and
fall accidents
whichcanresult
ina scvcreinjury.If youtbcl uncasy
on
a
slopc,do
notmowit.
. Watch
tirrholcs.ruts,orhurnps.
Tallgrass
can
hidc
obstaclcs.
. Donotmow
neardrop-ofts,ditches,
orembankmcnts.
Yru could
loseyourfbotingorbalance.
. Do not
mowonwet
grass.Rcduccdfimtingcould
cause
slipping.
Maintenanceand
Storage
. Keepall
nuts,
bolts(espccially
blade
attachment
bolts),
andscrcws
tighttoensurethat
thelawnmowcr
isinsafc
workingcondition.
. Ncverstorethe
lawnmowerwith
gasolincinthetank
insideabuilding
wherefumcs
mayrcachanopen
flameor spark.
. Allow thcengine
tocoolbefbre
storingthelawn
mower
inanyenclosure.
. To reducethefire hazard,keeptheengine,
mufl1er,
batterycompartment,
and
gasolinestoragearea
free
of
grass.leaves.orexcessivc
grease.
. Checkthe
grass
catcher
fiequentlyforwear or
deterioraticln.

nepla'beworn
ordamagedparts.
Useextrir
care
when
handlinggasoline;
gasoline
vapors
areexplosive.
Nevcr
tamperwith sat'ctydevices.
Checktheirproper
opcration
regularly.
Ke
e
pthelawn
mowerfiee
of grass, leavcs,orctther
debrisbuildup.
Cleanupany
oilorfuclthat
spills.
Stop
andinspectthelawn
mowcrii'voustrike
an
ob.ject.Repair
thclawnmower,
if neccssary,
befitrc
starting
theenginc.
Never
attcmpttomake
'"r
hcclheight
adjustmentswhile
theengincis
running.
Grass
catcher componentsarc
subjecttowe
ar,damage
,
anddcterioration,
which
could
cxpctsemovingparts
or
allowobjccts
tobcthnrwn.
Frcqucntly
checkthc
compononts
andrcplaccthcm
withthcmanutucturcr's
rccommcndcd
partswhe
nnecessarv.
Lawnmower
bladesaresharpandcancut.
Wrapthe
blade(s)or
weargloves,
and
usccxtracautionwhen
servicingthcm.
Do notchangcthespeedsettings
clnthccngine.
If youmustdrainthefuelfiom thefucltank,dttit
outdoors.
To
cnsurcthcbcst
perfilrmance
andsaf'cty,purchase
onlygcnuineLawn-Boy
replacement
parts
and
accessories.
Maintainrlrreplace
saf'etyandinstruction
decalswhen
ncccssary.
Safety
and
Instruction
Decals
OnMower
Housing
(Part
No.43-8480)
AWARNING
rcTANrc ISE ORNROIYil BEM
il SErcEY S|,RE DoTq OPEME
wmw M{ANGE @VERSG MH
..An cHIEmLCKEDfirc -ll
OnMower
Housing
(Part
No.99-6018)
OnMowerHousing
(Part
No.
93-7250)
.3-,#"ffi1,1$'*'^***,Sil fi8
doAirG 5_oPEsrc- *a\D msN
' cc F w wgE\cq -EN G oFEns^ft aRou6
'
ii$sH;1?".*:::1:**3"
fi._f,ts,,
&1$#+1;tr[[L.ry-,..':
@ riN
Slrtetvdccirls
andinstructir)ns
arccasilyvisihlcto
thc
operatclr
andarclocatcdnear
any
arcaof potential
danger.Replacc
anydecalthatisdamagedorlost.
?"32\2 1\1
HEIGHT
OF
CUT
By
FrontWheels
(Part
No.
92-2914
Right)
(Part
No.
92-2915
Left)
OnWire
Harness
(Electric
StartModel
only)
(Part
No.104-7953)
IaWAFN|ING]
HOT
SURFACE
'
On Muffler
Guard
(PartNo.65-2690)
OnMower
Housing
(Part
No.
92-4851)
A CAUTION
For\o!r pcr5ola protcclron
fead al safle! notcs in ona no
orner s nenlal 1166
twtsils{G
ffi
AH
*tut

Assembly
Note:Determinc
tholeflandrightsides
ofthemachine
I'rtrm
thenormaloperatingposition.
Unfolding
the
Handle
l. l-ooscn
thchandlcknohs
ancl
littthctophandlchalf
in
anarcuntil
thc
handlc
halvcsareinlinc
andncst
togother(Fig.2).
1 Tophandle
half
2. Knob(2)
Figure2
3 Stops
Tightcnthcknobs
sccurcly.
Rotatc
thchandletowardthercar
ofthclawnmowor
untilit
snaps
into
thcstopsin
thc
handlc
brackets
(Fig.
2).
v
\
1. Cable anchor
2. Lowsetting
Figure
3
3. Highsetting
l. Squeozcthc hottornhandlcscction
(hoth
sides)
inward
ofTthc
pins.
2. Positionthehandlcandcableanchoroverthcninsat
thcdcsircdhcight(l--ig.3).
Note:Yru maynccdtokrosenandslightlrnrovcthc
bclt
c()vc
r.
3. Ad
just
thccahlc.
Rcf'cr
to
Ad
justing
theScll-propeI
DrivcC'ablcon
pagc
17.
Installing
the
Fuse
Electric Start Model only
Thct'usc
protccts
thcclcctricstartcr.It'thchattery
docs
notcharge
or
thce
ngine
docs
not
turn
with
theclcctric
starter,thctusemaybeblown.Usca40-amp
plug-in
tvpe
tusc.
|. Rcmovc
thcbattcry
box
covcr
(Fig.a).
'l--------*
1
high
and
low
(Fig.
3).
ismost
comfbrtable 1. Batterybox
i
Figure4
2. Batteryboxcover
m 5146
Changing
theHandle Height
Thehandlehas
twohcightsettings:
Chooscahandleheight
scttingthat
IOr
you.
6
Folding
or unfoldingthehandle
improperly can
pinch,
stretch,or damageoneor moreof the
cables.Any pinched,
stretched,or damagedcable
maycause
anoperationalfailurethat resultsin an
unsafeoperating
condition.
. Do not pinch,
stretch,
or damagethecables.
. Handle
thecableswith carewhenfolding
or
unfoldingthehandle.
. Donot usethelawn mowerif oneor moreof
thecablesarepinched,
stretched,or damaged.
Contact
your AuthorizedServiceDealer.

Note:tjscaflat-headscrewdriver
touncliothe
batterycover(Fig.
5).Unclipbothendsofthebattery
coverbefbrcremoving
it toprevcnt
damagingit.
Figure
5
2. Install
thefuseinthcfuse
holderasshowninFigurc6.
t".a
tc\
'?.,
,11/'
(.
t\ \2
Figure
6
2. Fuse
1. Fuse
Holder
lnstallthebatterv
borcover.
Before
Starting
Filling
theCrankcase
with
Oil
Your Lawn-Boy lawn mower comeswithout oil in the
crankcase.However,your
lawnmowcr
comcswitha
20oz.(0.-59liter)
bottleofoil.
Fill
thecnginccrankcascwith
amaximumof21
oz.
(0.62liters)ofSAE30oil.Use
onlyahigh-quality
detergentoil thathasthe
AmericanPctrolcum
lnstitute
(API)service
classification
SF,SG,SH,orSJ.
Toaddoil:
l. Movethelawn
mowertoa level
surface.
2. Cleanaround
thedipstick(Fig.
7).
Figure7
'1
. Dipstick
3. Rcmovcthcdipstickbyrotatingthe
cap
counterclockwiseandpulling
itout.
4. Wipethedipstickclcan
with
aclean
cloth.
5. Inscrt thedipstick
into
thc
fillcr
neck,thenrcmovc
it.
Note:Tocnsurc
anaccuratcoil lcvclrcading,
yt'ru
must
I'ullvinsert
thedrpstick.
6. Rcadthcoil lcveIonthcdipstick(Fig.
7).
7. If theoil le
vcl
rcadingisbclow
|hcAddmarkonthc
dipstick,slowly
pour
onlyenoughoil into
thcfiller
holc
toraisc thcoil lcvcl Io thcFull markonthc
dipstick.
f[[![![f l)o notovcrfillthe
crankcascwithoil and
runthcenginc;enginedlmagewill rcsult.
Drainthe
oxccssoil untiltheoil lcveIonthe
dipstickreadsFru11.
8. Insertthedipstickintothcfillerneck
androtatcthc
capclockwiseuntil
it istight.
Filling
the
Fuel
Tankwith
Gasoline
Forbestresults,use
clean,
fresh,lcad-frcogasoline,
including
oxygenatedorrelrtrmtrluterlgasoline, withan
octanc
rating
of 87or higher.Tilcnsurefrcshncss,
purchasc
onlythc
quantity
ofgasolinc
that
you
expect
to
usc
in
30days.Usingunleadcd
gasoline
rcsultsin
fewer
combustiondcpositsandlongerenginelif'e.You
mayuse
leadcdgasolincif unleadcd gasoline
isnot
availablc.
fEElll?pl|il Do notadcJoil to thcgasoline
.
Ifllt!fiEEf Do notuscmethanol,gasoline
containing
methanol,
gasohol
containingmorethan107o
ethanol,
prcmium
gasolinc,
orwhitegas.
Usingthesetuels
can
damagetheengine'sfuelsystem.
f@!fil Do not
use
gasoline
thatismorethan
30
davs
old.

In certain
conditions,
gasolineisextremely
flammable
andhighlyexplosive.
A fire or
explosion
from gasoline
canburn youandothers
andcan
damage
property.
. Fill thefueltank outdoors,
in anopen
area,
and
when
theengine
is
cold.
Wipe up anygasoline
that spills.
. Donot fill thefueltank completely
full. Add
gasolineto thefueltank until thelevel
is l/4 to
ll2in.6 to 13
mm) below
thebottom
of the
filler neck.
This emptyspace
in thetank allows
thegasolineto expand.
. Never
smoke
when
handling
gasoline,andstay
away
from anopen
flameor wherea sparkmay
ignite
the
gasolinefumes.
Store
gasolinein anapproved
fuelcontainer
andkeep
it out of thereach
of children.
Never
buy morethan a 30-day
supply
of
easoline.
l. Disconnect
the
wire
Fig.
e).
All Models Except 10363
1. Spark-plug
wire
Model 10363only'
-
2-----.;
Figure
8
Figure
9
r-3
t""-4
3. Fuel
tankcap
4. Primer
Whenfueling,
undercertain
circumstances,
a
static
charge
candevelop,
igniting
thegasoline.A
fire or explosion
from gasolinecanburn youand
others
anddamage
proPertY.
' Always
place
gasolinecontainers
on the
ground
andawayfrom your vehiclebeforc
filling.
. l)o not fill gasoline
containers
inside
a vehicle
or on a truck or trailer bed
because
interior
carpets
or plastictruck bed
linersmay insulate
thecontainer
andslowtheloss
of anystatic
charge.
. When practical,remove
gasoline-powered
equipment
from thetruck or trailer andrefuel
theequipment
with itswheelson theround.
. If thisisnot possible,thenrefuelsuch
equipment
on a truck or trailer from a portable
container,
not from a gasoline
dispenser
nozzle.
. If you must use
a gasolinedispenser
nozzle,
keepthe nozzle
in contactwith the rim of the
fueltank or container
opening
at all times
until
fueling
is
complete.
,''g'
1. Spark-plug
wire
2 Oil
fillcap
2. Clean
around
thc
l'ucllank
cap
(Fig.9
or
lrig'
l0).
All Models
Except
10363
m 3713
Figure
10
1. Fuel
tank
cap
Usc
afuel
stabilizcr/conditioner
regularll'
during
operation
ancl
stttrage.
A stabilizer/conditioner
clcansthc
engine
during
opcratitln
and
prevents
gum-like
varnish
<leposits
fromlirrming
inthee
ngine
during
periods
clf
storagc.
from
thespark
plug(Fig.
ttor

a
fttEEEE Do notusefueladditives
otherthanafuel
stabilizer/conditioner.
Donotusefuelstabilizers
with
an
alcohol
basesuchasethanol,methanol,
orisopropanol.
3. Removcthccap
fromthetank(Fig.
9
orFig.
10).
Fillthe
fucl
tank
withunlcadedgasolinc to
within1/4
t<t1l2in.
(6
to13mm)from thetop
ofthetank.Do
notfill intothefiller neck.The gasoline
musthave
roomto expand.
Install
thc
fucltankcapand
wipe
upanv
spillcd
sasol
ine.
4.
5.
Operation
Note:Determincthc
le
ti and
right
sides
ot'thcrnachinc
l'rtrrn
llrc
ntrrmirl
r)pcriltint
lrosilitrn.
Eachtimcbefirrc
you
mow.makesurcthatthc
sell-propeI
drivcandthccontrolbar
opcratcproperly.Whcn
y'ou
rclcascthccontrol
bar,
theengineand
thcself-propcl
drivcshouldstop.
Il'tlrcvdonot,
contact
anAuthorizcd
ServiccDcalcr.
Controls
Thc
startcr
handlc.thebladcc()ntr()lhuil.rndthc
sell'-propcldrivebailurconlheupperhandlcus
shor.vnin
FigureIl.
Figure11
1. Starter handle 3. Bladecontrolbail
2 Self-propel
drivebail 4. Upperhandle
Startingthe
Engine
l. Conncctthe
wireonto
thcspark
plug(Fig.8orFig.
c)).
2. Pushthe
prime
rthrec timcs,
waiting
twtr
sccunds
betweeneach
push
(Fig.
t)
orFig.
12).
1 n-stta
Figure12
1. Primer
(Allmodels
except
10363)
Note:If thetcmpe
raturc
is
-5-5'F(13"C')
orhclow.
push
thc
primerfivctimes,
waiting
twosecondsbctwce
n
e
ach
push.
Note:Do
not
use
thc
prirncr
to
starta
warm
cnginc
aftera
bricl'shutdown.
Howcve
r.
cool
wcathermay
requircyou
l()
primc
thce
ngincrrguin.
3. tloldtho
bladecontrttl
bailagainstthcuppcr
handle
(Fig.
Il).
zl. Start
thclawnmowcr.
Manual
Starting-Pull thc
slartcrhandlelightlyuntil
you
leelrcsistancc.
thcn
pullitshlrply
(Fig.
ll).
Allowthc
ropereturntothe
handlcslowly.
ElectricStarting(Electric
StartModel only)-lnscrt
thc
kevintothc
switch.Turnthc
kcy
to
therightand
rclcaseit
whcntheenginestarts(Fig.
l3).
Figure
13
Note:
If thc battcry
chargcisttto
low
to
startthc
cnginc,
startthe
enginenltrruallv.
'lir
chargethe
battcry,
retertoCiharging
theBirttcryon
pagc19.
Note:
If thce
ngincfailstostart
afler thrccatte
mpts,
rcpcilt
stcps2lhrough
4.
Stopping
the
Engine
Releasethc
bladccontrol
bail(Fig.
l4).Both
thc
cnginc
andthcblade
should
stop.If theydonotstop
properly,
contactvour
Authorized
Scrvice
Dealer.
I

Using
the
Self-propel
Drive
Self-propel
Models
only
l. Tooperatetheself-propeldrive,squeezethc
scll-propeldrivebailagainstthehandleandhold
(Fig.l-5).
Figure15
1 Self-propel drive bail
Note:Thcmaximumscll-propcl
groundspccdisfixcd.To
rcduco
thc
ground
spccd,
increascthcspaccbctwccnthc
bailandthc
handlc.
2. Todisengagctho
self-propcl
drivo,
rcloase
thc
sclf-propcldrivcbail
(Iiig.
16).
Figure16
1. Self-propel drivebarl
Pulling
the
Lawn
Mower
Rearward
Self-propel
Models only
Thelawn
mowcr
comcs
withfiec-wheelingclutches
which
makeitcasicrto
pull
the
lawn
mowe
r rearward.To
discngagc
theclutches,
youmayneedtcl push
the
lawn
mowerfbrwardoneinch
(2.-5
cm)or moreafter
you
releasetheself-propeldrive
bail.
Forexample,if you approachanobject
(such
asatree
ora
bush)
fiom which
you
wanttopullbackthelawnmower,
releasctheself-propeldrive
bailwhenthelawnmowerls
aboutsixinches(15
cm)away
fiom the object.Thc
momentumof thelawn
mowershouldcarry
it fbrwardal
leastonc
inch
(2.-5
cm)anddisengage
theclutches.
You
should
thenbeable
toeasilv
null
thc
lawnmower
rcarward.
Adjustingthe
Cutting
Height
Each
wheeladjusts
individuallywitha
whce
I hcight
adjustment
levcr.Cutting
heightsareI in.(2-5
mm);1-l12
in.
(3ttmm);2in.(-51mm);
2-112in.(64mm);3 in.
(76mm);
and
3-1/2
in.
(89
mm).
l. PullthcwheeI hcightad
justt.ncnt
lcver towardthc
wheeland
movc it to thcdesircd
position
1Irig.
l7).
1 wheerheisht
adjustme"::ill" t t
2. Relcase
thc
whe
clheightadjustmentlevcrand
se
at
it
sccurcly
inthcdesircdnotch.
Note:
Setalltirur
wheclstothesamc
hcight.
1. Bladecontrolbail
Figure14
Adjustingthecuttingheight
leverscouldbring
your handsintocontact with a movingbladeand
resultin serious
ir{ury.
. Stopthe engineand wait for all movementto
stopbeforeadjusting the cutting height.
. Do not put fingers under the housingwhen
adjusting thecutting height.
1021
Operating
Tips
Reviewthe
saf'etyinstructionsand
rcadthismanual
carcfullybeftrre
opcratingthe
lawnmower.
Clcar
theareaof sticks,stoncs,
wire
,branches,and
otherdebris
thatthelawn
mowercould
pick
uporthc
blade
could
hit
and
throwobjects.
Kecpcveryone,
espccially
childrenand
pets.
away
fromtheareaof operation.
Avoidstrikingtrees,
walls,curbs,
orothersolid
objects.
Neverdeliberately
mowovcranyobiect.
If thelawnmowerstrikes
anobjcctorstartstovibrate,
immediatelystoptheengine,
disconnectthespark
plug
wire,
andexamine
the
lawnmowerfordamage.
10

Maintainasharpbladethroughout
thecuttingseason.
Pcriodicallyfiledownnicksonhladc.
Replacc
thc
blade
when
necessary
with
anoriginal
Lawn-Boyreplacementblade.
Mow onlydrygrass or lcavcs.
Wctgrassandleaves
tendtoclumponthe
yard
andmavcauscthc
lawn
m()wcr
to
plug
orthc
cnginctostall.
Cleanclippingstlrleave
strom
thcundcrside
ofthc
lawn
mowerdcckaticreach mowing.Sce
('le
aningthe
Lawn
Mowcrllousingonpagc13.
Keeptheengincin
good
runningcondition.
Clcantheairfilter frcqucntly.Mulchingstirsupmoro
clippings
anddust
* hichclogsthcairfilterand
reducescnginc
perlirrnrancc.
'lir
achicvcthc
beslmulchingaclion,sctthe
lawn
mowcrhcightot'cuts()thatthela*n m()\\'er cutsno
morethanathirdofthe
grrrss
stem
()r
umrrrimumof
one
-inch
(2-5mm)longclippings.It'youtrvto
mulch
moroorif thcgrassis
r,'crv
lush,themulchingaetion
will hcpoor.Undcrthesectlnditir)ns,usethcside
dischargcorgrass catcher.A t'ewdays
latcr,install
thc
mulch
plateon
v()ur
lawnmowcr
to
rcsumcmulching.
CuttingGrass
. Inthcsummer,cutthe
grass
atthc
2,2-112,or
3-inch
(51,64.or76mm)cuttingheightscttings.Onlvcutofl
about
one
-third
ot'the
grass
blade.
Donotcuthelow
thctu'o-inch
sctting
unlcssthc
grassissparsu
()r
it is
latcautumn
whe
nthe
grass
growthbeginstoslow
down.
. Whencutting
grass
ovcrsix
inchcs
tall,
firstmow
usingthc
highe
stcutting
height
settingand
walking
slower; thsnmowagainata lowcr sctting
lirr
be
sl
lawn
appcarance.
If grassis
too
longandleaves
clumps
ontopofthelawn,thelawnmowermay
plug
andcauseengineto
stall.
. Alternatethemowingdircction.This
helps
disperse
theclippingsove
rthe lawnfor
cve
nf'crtilization.
If thefinishedcutlawn appearance
is
unsatisfactory,try
oncormorc
ofthc tirllowinq:
. Sharpentheblade.
. Walkataslclwe
r pacewhilemowing.
. Raisc
thccutting
heighton
your
lawnmower.
. Cutthe
grassmttrefiequently.
. Overlap
thecutting
swathsinsteadof cutting
irfull
swath
with
e
ach
pass.
. Setthe
cutting
heightclnthe
tiontwheelsone
notch
lowerthanthe
rearwheels.
Cutting
Leaves
. Aflercuttingthc
lawn,makc
surcthathalfofthelawn
showsthrclugh
thecutlcafcove
r.Yru may
nccd
tit
makeoncormorc
passes
()ver
theleavcs.
. Forlightleaf
covcragc,
set
all
thewhcclsatthe
same
cutting
height.
. It'therearc
morethan-5
inchcs(12.7cm)tlf
lcavcson
thelawn,
sctthe
frontwhe
cls
oneortwo
notchcs
highcrthan
the
rcar
uhcels.This makcsit
casie
rtrr
f'ccdtheleavosunde
rthelawn
mowcr
dcck.
. Skrw
down
yourmowingspccd
if thc lawnmowcr
dues
notcutthc
leavesfinelvcnough.
. If you
cutup
alotol'oak
lcltvcs,voucanaddlimeto
yourgrassinthespringto
rcduccthcucidityoftheoak
lcavcs.
Wetgrass or leales cancause
youto slip,
contact
theblade,andseriouslv
injure you.
Mow onlyin dry conditions.
11

Maintenance
Note:
Dctcrminc
thc
lefiirnd
rightsides
ofthe
machine
from
thc
normiil
opcrating
position.
Recommended
Maintenance
Schedule
l
Change
theengine
oilafter
thefirst
two
operating
hours
Maintenance
Service
lnterval Maintenance
Procedure
EachUse Check
the
engine
oil
level.
Remove
grass
clippings
and
dirt
from
under
the
housing'
5 Hours . Check
theblade
andthe
engine
mounting
fasteners.
Tighten
them
ifthey
are
loose.
25Hours
. Change
theengine
oil.l
. Clean
theair
f
ilter
(all
models
except
10363);
clean
itmore
frequently
industy
operating
conditions.
. Remove
grass
clippings
and
debris
fromthe
under
the
belt
cover
andaround
the
drive
belt.
50
Hours
. Sharpen
or
replace
the
blade;
maintain
itmore
frequently
ifthe
edge
dulls
quickly
in
roughor
insandy
conditions
. Check
the
stopping
time
of
theblade
brake.
The
blade
moststop
withln
three
seconds
ofreleasing
thebail;
ifitdoes
not,
contact
an
Authorized
Service
Dealer
forrepair.
. check
and
adjust
theself-propel
drive
cable
(self-propel
models
only).
. Grease
the
rear-height
adjustor
levers
(self-propel
models
only)'
. Check
for
leaks
inthe
fuelsystem
and/or
adeteriorating
fuel
hose.
Replace
parls
ifnecessary.
100
Hours
. Clean
the
air
filter
(model
1
0363
only);
clean
it
more
frequently
industy
operating
conditions.
. clean,
inspect,
and
gap
thespark
plug.Replace
the
spark
plug
if
necessary.
. Clean
the
cooling
system;
remove
grass
clippings,
debris,
or
dirt
from
the
engine
air
coofing
finsand
starter.
Clean
the
system
more
frequently
indirty
or
high-chaff
conditions.
Storage Emptythe
fueltank
before
repairs
asdirected
orbefore
storage'
Charge
thebattery
monthly
and
before
storage.
[email protected],Smanualtilraddititrnalmaintenanccprttcedurcs.
12
If youleave
thewire onthesparkplug,
someone
could
accidently
startthe
engine
andseriously
injure youor otherbystanders.
Disconnect
the wire from the spark plug beforeyou do any maintenance'Set
the wire aside
so
that it does
not accidentallycontactthe spark plug.

Checking
the
Engine
Oil
Before
youusethclawnmowcr,
makesurethat
theoil
lcvelisbetween
IheAddand
thcFrrii
marksasshclwntln
the
dipstick
(Fig.7).If thc
oil le
vel
isbe
lowtheAdd
mark,add
oil.Ref'crto
FillingthcCrankcasc
withOilon
page7.
Cleaning
the
Underside
ofthe
Lawn
Mower
Housing
A clean lawn
mower housing
providesthche
st
cutting
performancc.
C'hccktirr
grasshuildupandcle
anthc
housing
afiercuchuse.
Washing
Method
l. Movcthc
lawnmowcrtoa
1'latc()ncretc
orasDhltlt
surtacc
ncara
gardcn
hosc.
2. Startthe
cnginc.
3. IIoldthc
running
gardcnhoseathandlc
levr:land
dircct
thewatcrto
flowonthe
ground.justinfronl
ol'
thcright
rcarwhccl
(Irig.l8).
Figure18
1. Rear
rightwheel
Thcblade
will draw in
waterand washoutthc
clippings.
Letlhe
watcrrununtillhe
clippings
ntr
Iongerctimcout
fromundcrthc
housing.
Stopthe
engincand
waittitrallmoving
parts
ttt
stop.
Turnotfthc
gardenhosc.
Startthclawn
mowerand
lctit runfilra
I'ewminutes
todrv itofl'.
Whilctheenginc
runs,engagoanddisengagc
thc
traction
drivescvcral
timestodry
itout.
1
Scraping
Method
If washing
docs
notrcmove
alldcbris
from
underthelawn
mower,tip
the
httusingandscrape
it
clean.
1. Runthe
engine
dryctr
removcthe
fuel
whcntheenginc
iscool.
Tipping the lawn mower may causethe fuel to
leak from the carburetor or the fuel tank.
Gasoline
isextremely
flammable,
highlyexplosive'
and.
undercertain
conditions,
cancause
personal
injury or propertvdamage.
Avoid fuelspills
bl runningtheengine
dry or by
rcmoving
thegasolinewith a handpump; never
siphon.
Disconncct
thc
wircl'romthe
sparkplug(Fig.
8or
Fig.
(.)).
Tipthc
laun
nrowcr
ontoilsrightsiclc(airfilterup)
(Fig.
le).
i'
Figure
19
Note:
When
vou
tipthc
lawnmower
onto
itssidc,rtltatc
thcbladc
aslittlc
as
possibletoavoid
starting
problcms.
4. Scrapcthc
built-up
grassclippingsand
dirt
fronlthc
lawn
mowcr
housing
rvithlrhardwood
scrape
r.
5. 'fip
thc
lawn
mowcrupright.
6. Cbnnoct
the
wirc
to
thcspark
plug.
Changing
the
Engine
Oil
Clhange
thccngine
oilalierthe
firsttwtl
hoursol'opcration
andthen
aliercvery
25
opcrating
hourstlrcvory
scilson.
Run
thecngine
just
bctirrc
changing
thc
oilto
warmthe
oil.Warmoilflowbctter
and
carries
morccontamin;.rnts.
4.
5.
6.
1
13

,
Note:
Changetheoil
lawn
mowerundera morel'requentlywhen
opcratingthe
hcavvload
or
inhigh
temperatures.
Tipping thelawnmowermay cause
thefuelto
leak from thecarburetor or the fuel tank.
Gasolineis
extremelyflammable,highlyexplosive
andundercertainconditionscancause
personal
injury or propertydamage.
Avoid fuelspillsby runningtheenginedry or
removing
gasoline
with a handpump; never
siphon.
Draining
the
Oil
abovethe
Lawn
Mower
Deck
l. Drain
thcgasolinel'nrm
thc
I'ucl
tank;rctertostepsI
through4of F,mptving
theli'ucl
hnk on
page
19.
2. Drain
theoil I'rom
thcoilfill tubeat
thcdipstick
into
anappropriatecontaincr(Fig.20).
3. Recyclethc
usccl
oiluccordinr:tolocal
codcs.
Note:Thcreis
anoildrain
plug
on
thcbottomofthc
cngincvisibleI'rum
undcrthclawnmowsr
deck.
Howcvcr,
becausc
thcplugisnot
easilyacccssible,Lawn-Boy
docs
notrecommcnd
drainins
thcoiltiombclowthe
deck.
Figure20
1. Oilfilltube
4. Fill
thecrankcasctothelrrl/ line
onthcdipstickwith
tre
shoil.Ref'ertoFilling
thcCrankcasewithOilon
pagc
7.
Chccktheoil level andinsert
thedipstick.
Wipeupanyspilled
oil.
Cleaning
the
AirFilter
All ModelsExcept10363
Cleanthe
pre-clcancr
andair
fillcronccc\
crv
scason
or
cvery2-5
hours;
cleanthem
morefrequcntlrunderdusty
conditions.
lffi!fi!fit Donotoperatethecnginc
*ithout
the
pre-cleaner
andair
filtcr
clcment;cxtre
me
e
ngincwe
aror
damago
will occur.
1. Toremovethe
pre-cleaner
andairfiltcr,unsnapthc
covcr
latch
and
remove
thecovcr.the
pre-cleancr.
and
thcair
filter(Fig.21).
m'3715
-/\:-qa'r
\,/
-'\-- ---2l
,1
2Cover Pre-cleaner
Wash
thc
dctcrgcnt
Figure21
3. Filter
4. Air box
prc-clcancr
andthc air filter in laundrv
or kcrosene(Fig.22).
2.
3.
4.
-).
6.
Figure22
Squeezethe
filtcrs
toremove thee
xcessliquid
and
blotthemdrywitha
papcr
towclor
rag.
Saturate
the
pre-cleaner
andair
filterwith SAE30W
oil(Fig.23).
14

Figure
23
5. Squeeze
thc
prc-cleaner
andthefilter
untiltheoilis
distributedevenly.Blot
themlightlywithapapcr
towelto removc
exccssoil.
6. Replace
thc
filtcrs
withthe
cleanestside
facing
the
carburctor.
fEt@ Ensurethatthefilters
are
fully scatcdin
theairboxand
doncltpucker toprcvcnt
dircct
passage
of
airanddirt.
Model
10363
only
Clcanthcairfilterevery100
operatinghoursorycarly;
clcanitmore
tiequentlyundcr
dustyconditions.
Note:Donotopcratc
thccnginewithoutthc
air
filter
clcment;extremeenginc
damagewill occur.
l. Rcmovc
thoairflltercover
by
pulling
thetabfrom
the
body
and
lifling
thecover
up
(Fig.2a).
''L-'--t
2. Removetheair
filter
(Fig.2q.
3. Inspecttheair
filter.If it is
discoloredordirty,
replace
ir.
Note:Do notattempttocleanor oil theairfilter.
4. Cleanthe insideof theairfiltercoverandbody
thoroughly.
5. Install theair
filter.
6. Installthecclverby hooking thecoverslotoverthetah
onthcbody,
pushthecoverdown,andsnap
thccover
ontothebody(Fig.
24).
Cleaningunderthe
Belt
Cover
Self-propelModels only
Undercertainconditions,clippingscancollectunder
the
beltdrivecoverandinthc
pullcygroove.
Thiscancausc
thcbclttoslip,theself:propcldriveto lclsc
powcr,
orthe
thcsclf-propcldrive
not
todisengagc.
Clcan
grass
clippingsanddebris
from
undcrthcbcltcover
cvcry
2-5
clpcrating
hours.
l. Removethescrew
ficlm
thcbeltcoverandslidethe
bcltcclvcrtclthc
rcar,
unhookingthctabclnthcfiontof
thecoverfiom thcdeckopcning
(Fig.
25).
\..\,,,
,.
\.-1,1==
'
, ,._aa , _
1. Beltcover
Figure25
2. Tab
)
lt..,-- ,7.1
i: \':
j' \.. ). r
Figure 24
+.
Tilt thccoveruptothesideand removc
dcbris
fiom
underthecoverand
pulleygroove
(Fig.25).
Reversethe
procedure
toinstallbeltcover.
Maintaining
theCutting
Blade
A straight,sharpblade providesmaximum
cutting
perfbrmance.Inspect
andsharpenor replace theblade
every50operating
hours
(more
fiequently
if theblade
edgedulls
quicklyinrough
orinsandyconditions).
Body
Tab
1. Cover
2. Filter
',':A/
It
^/g
15

The bladeis sharp; contactingthe bladecan result
in serious
personalinjury.
Wear gloves or wrap the sharp edgesof the blade
with a rag.
A worn or damaged
bladecan break, and a piece
of the bladecould bethrown into theoperator's
or bystanderts
area,resulting in serious
personal
i4iury or death.
. Inspectthe bladeperiodically for wear or
damage.
. Replacea worn or damaged
blade.
1. Disconncct
thcwircfromthc
sparkplug(Fig.
8
or
Fig.e).
2. Tipthelawnmowcr
ontoitsrightsidc
(airfilterup)
(Fig.1e).
Inspectingthe
Blade
Carclully
cxamincthcbladc
lirrsharpnessand
wcar,
cspcciallv
where
thc
flatandthecurvcd
partsmcet
(Fig.
264).Bccausc
sandandabrasive
matcrialcanwcar
awaythcmctalthatc()nnccts
thcflatandcurved
parts
of
thcbladc,chcckthcblade
befitrcusingthe
lawnmowcr.If
vou
notice
a
slotorwcar
(Figs.26Band2(rC),rcplacc
thc
bladc;
rcf'crtoRemovingthc
Bladcon
pagc
l(r
1
4' 27o
Removing
the
Blade
(AllModelsExcept
10363)
l. Rcmovc
theblade
nut
(Fig.27).
Figure 27
1. Blade
nul
2. Blade
3. Blade
driver
Rcmovc
thchlade
fromthebllrdc
drivcr(ljig.
27).
E,xamine
thebladc
drivcrtilrbcnt
orshearcd
drrvc
lugs.Rcplacc
it il'ncccssarv.
Removing
theBlade
(Model10363
only)
l. Rcmovc
thcblade
bolt(Fig.
2fi).
'1
. Sail
2. Flatpart of blade
Figure
26
3. Wear
4. Slot formed
)
3.
B
,)
3.
Note:
Forthebest
pcrfirrmance
, installa ne
w bladcbclitrc
thccutting
seasonbcgins.During
theyear,filcdownany
small
nickstomaintainthccutting
edse.
12
L\
Removethe
blade
fiomtheblade
drivcr
(Fig.28).
Examine
theblade
driver
fbrbcntor
sheareddrive
lugs.
Replaccit if neccssary.
1. Blade
bolt
2. Lock
washer
3. Bladespacer
Figure
28
4. Blade
5. Bladedriver
16

t__ glL Cd?hq-rtf nr")4-*
snarpenins
the
",uo"d/ A Z/0s6L
Filethetopsideof thebladeto maintainitsoriginal
cuttingangle
(Fig.
29A)andinnercuttingedgeradius
(Fig.298).Thehladewill remain
balancedil you remove
thcsamcamountof materialfiom bothcutting
edges.
^u_l
Note:Donot
filcor
grind
thcbladcmurcthan
5 in.
(127mm)l'rom
thc
outsidc
cndsandnolessthan2 in.
(-5I mm)fromthetrailing
cdgcas
showninFigurc30.
2
InstallingtheBlade
1. Ensurethatthc
bladedriverisinstalledonthe
crankshaft.See
Figure27.
2. Installthe
bladeoverthelugsof thebladedriver
with
thecurvedcnds
towardthehousing
(Fig.
27).
3. Securethebladc
withthebladenut
(or
boltonModcl
10363)as
showninFigure32.
Figure
32
4. Torquethebladenut(orboltonModcl10363)I<t47
li-lb(63N.m).
Note:Replaccthoblado
nut
irftcr
installing
andremt'rving
thcbladctirurtimcs.Thckrckingpowcr
ofthcbladenut
diminishesandthcbladenut
could
looscn
if you donot
rcplaccit.
5. (irnncct
thewire
tothc
sparkplug.
Adjusting
theSelf-propelDrive
Cable
Self-propelModelsonly
Whenever youchange
the
handlehcight,
installanew
self'-propcldrivecablo,oril'th0
tractiondrivebeltslips,
adjust
thc
sclf-propcl
drivccablc.
l. l-ooscn
thc
nut
onthccablcsupport(Fig.33).
Figure29
'1
. Sharpen althisangle
only 2.
n-4783
Maintaintheoriginal
radiushere
1. 5 in.
(12.7
cm\
1
Figure
30
2 2in (51cm)
Balancing
theBlade
l. Clhcckthebalancc
ofthebladebyplacing
theccntcr
holcofthcbladeovcr
anailorascrcwdrivcr
shank
clampedhorizontallyin
avisc(Fig.3l).
Figure
31
Note:Yrucanalsocheckthe
balancebyusinga
commercially manufirctured
bladcbalanccr.
2. If eitherendof thcbladerotatcs
downward.file that
end(notthccuttingedge
ortheendncarthe
cutting
cdge).Thebladcisproperly
balancedwhcn
neither
enddrops. Figure
33
11011lzin.(25
to38mm) 4.
Self-propel
drivebail 5.
Cable
jacket
1
007
1. Nut
Cablesupport
17

2. Holdthe
self'-propel
bail
1to lllzin. (25
to38
mm)
fiom the
handle(Fig.33).
3. Pullthecable
jacket
down(away
fiom bail)
toremovc
theslack
inthecablc
hetwecnthe
bailand
thecablc
support.
4. Tightentho
nutonthecable
support.
5. Rcleasethcbail
andcnsure
thatthecable
isltlose.
Note:
Thccable
must
be
loosc
withthebail
inthc
rclcascd
position.Otherwisc,
thelawn
mower
maycree
p
tirrward
whcn
you
dise
ngagethcbail.
Lubricating
the
Self-propel
Drive
Self-propel
Modelsonly
Grcase
thc
fittingsonthc
rear
whcclhcightadiustment
lcvcrsevcry
2,5opcrating
htlurs.
l. Wipethc
grcasefittings
onthcrear
wheelhcight
adjustme
nt
lcvcrswithaclcan
rag(Fig.
34).
Figure34
1. Grease
fittings
2. Installa
grcase
gunont()each
fittinginturnand
gently
apply
oneortwo
pumpsof
#2multi-purpose
lithium
grcase
tocach.
f@!fl F,xcess
grcase
maypreventthc
wheel
clutch
fromproperlyopcrating.
Maintainingthe
Spark
Plug
A spark
plug
that
isdirty,
pittcd,carbon-covcred,
or has
worn
electrodes
maycause
hardstartingand
poclr
()peratlon.
All ModelsExcept
10363
Rcplacethespark
plug
once
aseason
orclean
it every
100
hours,whicheveroccurs
first.UseaChampion
RI
19LM
spark
plug
orequivalent.
l. Stop
theengine
and
waittbr all moving
parts
tostop.
2. Disconnectthe
wire
fromthespark
plug(Fig.8).
3. Clean
around
thespark
plug.
i:.
4. Remove
the
spark
plugfromthecylindcr
hcad.
ffifi!fi!fl Replace
the
spark
plugifitiscracke
d.
toulcd,dirty,
or
if theclcctrodcs
are
wornordamage
d.Dtr
notclean
theelcctrodcs
bccausc
grit
entering
the
cvlindcr
candamage
the
engine.
5. Se
t thc
gaponthe
plugat
0.030
inch
(0'76mm)
(Fig.
3s).
Figure
35
1. 0.030
in.
(0.76
mm)
6. Install
thespark
plugbyhand;thcn
lorque
itttr
180
in-lb
(
l-5
li-lhor
20N'm).
7. (irnncct
the
rvirc
to
thc
spark
plug.
Model
10363only
Clean
orreplace
the
spark
plugoncc
a
season
()r
everv
l(X)ope
rating
hours,
whichcver
occurs
t'irst.Llse
lt
Champion
RN4Cspark
plug
tlrequivale
nt.
l. Stop
theenginc
and
wait
filr
all
moving
partsto
stop.
2. Disconncct
thc
wirc
fromthc
spark
plug(Fig.
9)'
3. Clcan
around
thc
spark
Plug.
4. Remove
the
spark
plugfrtlmthc
cylinde
r head.
fffi!flf, Rcplacc
thespark
plugit'it iscracked.
tbuled,
dirty,
orif thee
lectrodes
arc
wornclr
damagcd.
Do
notclean
the
clectrodes
bccause
gritentcring
thccvlinder
can
damage
thc
cngine.
5. Set
thc
gaponthe
plugat
0.030
inch(0.76
mm)
(Fig.
36).
Figure
36
O
OSO
rn
(0.76
mm)
Install
the
spark
plugbyhand;
then
torque
180
in-lb(15
ft-lb
or
20N'm).
Connect
the
wiretothe
spark
plug.
it tct
6.
1
18

Changing
the
Fuse
Refer
toInstalling
the
Fuseon
page6.
Charging
the
Battery
Electric Start Model onlY
Chargc
anew
orstorcd
battery
fbr 24continutlus
hoursttl
cnsuro
afull chargc.
Charge
thc
battcry
firr
24hours
evcry
month(every
2-5
starts)ttras
nceded.
l. Stop
the
ongine
and
wait
tirrall mclving
partstostop.
2. Disconnect
the
wircfromthespark
plug
(Fig.tt).
3. Rcmovc
thekcy liom thc
switch.
4. Connoct
tho
lcadofthebattery
chargcr
(supplied
with
yourlawn
mtlwcr)
tothe
wire
harness
lcad.
,.:
8. Connect
the
wiretothespark
plug.
Disposing
of
the
BatterY
ffifi!flf, Do
not
clispose
of
used
batteries
in
your
regular
trash.
ffifi!fl!fif Recycle
or
dispose
of
ascaled
lead
(acid)
battery
according
tolocal
ctldcs.
Incinerating,
landfilling,
or
mixing
ofsealcd
lead
(acid)
batteries
withthe
municipal
solid
waste
strcam
is
prohibited
by law in most
arcas.
Rcturn
this
battery
toafbderal-
tlrstate-apprtlved
scaled
lead
(acid)
battery
recYcler.
Contact
yttur
local
wasto
managemcnt
officials
tilr mtlre
infirrmatittn
rcgardi
ngthe
e
nvirclnmental
ly sou
nd
collection,
rccycling,
anddisposal
ofthebattery.
Emptying
the
Fuel
Tank
Stop
the
onginc
and
wait
fbrit toctttll
down.
Disconn<.:ct
the
wircfromthc
spark
plug(Fig.
t3or
Fig.
c)).
Rcmove
thc
cap
fiom
thc
fueltank
(Fig.
9orFig.
l0).
Use
a
hand
pump
to
syphon
thc
fuel
inttla
clean
lupnr()vcd
gasttl
inectrntlt
i
ncr.
Conncct
the
wirettl
thc
spark
plug.
Runthe
enginc
until
itstoPs.
Start
the
cnginc
again
to
makc
surethat
all
the
gasolinc
isout
tlfthe
carburcttlr'
l.
)
5.
6.
1
I
4.
1. Wire
harness
lead
il
m 5145
Figure37
2. Battery
charger
lead
5. Plugthc
chargcr
into
a 120
VAC powcroutlct.
6. Charge
the
battcry
firr
thespecified
time.
7. Unplug
the
battery
charger.
fffi!fl!fl Use
onlythe
Lawn-Boy
charger;
othet
chargers
could
damage
thebattcry.
Always
use
thc
charger
indoors
and
charge
the
battery
atroom
temperature
(70'For22"C)
whenever
possible.
Battery posts,
terminals, and relatedaccessories
contain
leadandlead
compounds,
chemicals
known to the State
of California to cause
cancer
and reproductive harm. Washhands
after
handling.
t9