ServicingtheCutting
Blades
Toensureasuperiorqualityofcut,keeptheblades
sharp.Forconvenientsharpeningandreplacement,
keepextrabladesonhand.
WARNING
Awornordamagedbladecanbreak,anda
pieceofthebladecouldbethrownatyou
orbystanders,resultinginseriouspersonal
injuryordeath.
•Inspectthebladesperiodicallyforwearor
damage.
•Replaceawornordamagedblade.
BeforeInspectingorServicingthe
Blades
1.Parkthemachineonalevelsurface,Disengage
theblade-controlswitch(PTO),andsetthe
parkingbrake.
2.Turntheignitionkeytooff.Removethekey,and
disconnectthesparkplugwiresfromthespark
plugs.
InspectingtheBlades
ServiceInterval:Beforeeachuseordaily
1.Inspectthecuttingedges(Figure100).
2.Iftheedgesarenotsharporhavenicks,remove
andsharpentheblade;refertoRemovingthe
Blades(page70)andSharpeningtheBlades
(page70).
3.Inspecttheblades,especiallyinthecurvedarea.
4.Ifyounoticeanycracks,wear,oraslotforming
inthisarea,immediatelyinstallanewblade
(Figure100).
g006530
Figure100
1.Cuttingedge3.Wear/slotforming
2.Curvedarea4.Crack
CheckingforBentBlades
1.Disengagetheblade-controlswitch(PTO),move
themotion-controlleverstotheNEUTRAL-LOCK
position,andsettheparkingbrake.
2.Shutofftheengine,removethekey,andwait
forallmovingpartstostopbeforeleavingthe
operatingposition.
3.Rotatethebladesuntiltheendsfaceforward
andbackward(Figure101).
4.Measurefromalevelsurfacetothecutting
edge,positionA,oftheblades(Figure101).
g000975
Figure101
1.Measureherefromblade
tohardsurface
2.PositionA
5.Rotatetheoppositeendsofthebladesforward.
6.Measurefromalevelsurfacetothecuttingedge
ofthebladesatthesamepositionasinstep4.
Note:Thedifferencebetweenthedimensions
obtainedinsteps4and5mustnotexceed3
mm(1/8inch).
Note:Ifthisdimensionexceeds3mm(1/8
inch),thebladeisbentandmustbereplaced.
WARNING
Abladethatisbentordamagedcould
breakapartandcouldseriouslyinjureor
killyouorbystanders.
•Alwaysreplacebentordamaged
bladewithanewblade.
•Donotleorcreatesharpnotchesin
theedgesorsurfacesoftheblade.
69