Craftsman 247.370160 Operator's Manual page 17

19-inch electric rotary mower
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Blade Sharpening
Toproperlysharpenthe cuttingblades,removeequal amountsof
metalfrom bothends d the bladesalong thecuttingedges, parallelto
thetrailingedge,at a 250to300angle.See Figure16.
Figure16
J
NOTE: It is important that eachcutting bladeedge be groundequally
to maintainproper bladebalance.A poorlybalancedblade willcause
excessivevibrationand maycause damageto the mowerand result
in personalinjury.The blade canbe testedbybalancingit on a round
shaftscrewdriver. G rind metalfrom the heavyside untilit balances
evenly.
Blade Installation
An unbalancedbladewill causeexcessivevibrationwhen rotating
at highspeeds.It maycausedamageto mowerand couldbreak,
causingpersonalinjury.
1.
Placethe cuttingblade,lockingplate,and blade bolton the motor
shaft and threadthe blade boltin fingertight.
NOTE: Makecertainto replacethe parts in the exactorder in
which theywere removed.Wheninstallingthe cuttingblade,
be sureit is installedwith the curvedends pointingtowardsthe
mowerdeck and not towardstheground.
2.
Torquethe blade boltdownusinga torquewrenchto assurethe
bolt is tightenedproperly.The recommended torquefor the blade
bolt is 170-220 in. Ibs.
Toensuresafe operationof your mower,periodicallycheckthe blade
bolt for correcttorque.
MAINTENANCE
SCHEDULE
Alwaysstopthe motorand unplug mowerbeforecleaning,lubricating
or performingany repairsor maintenance on the lawn mower.Always
wearsafety glassesduringoperation or whileperforming anyadjust-
mentsor repairs.
Followthe maintenance schedulegiven below.This chart describes
serviceguidelinesonly. Usethe ServiceLog columnto keeptrackof
completedmaintenance tasks.To locate the nearest Sears Service
Centeror to scheduleservice,simplycontactSearsat
1-800-4-MY-HOME®,
EachUse
Annuallyor 25 hours
1.
Mowerblades
2.
Looseor missinghardware
3.
Controls
4.
Motor
5.
Deck
1.
Wheels
2.
Reardischargedoor and
side mulchplug
3.
Mowerblades
1.
Sharpenas required
2.
Tightenor replace
3.
Checkfor properoperation
4.
Removeany buildupof grassand
leaveson or aroundthe motorcover
(do not usewater).
5.
Cleanundersideof deck with a
suitabletool (do notuse water).
1.
Lubewith light oil
2.
Lubetorsion springand pivot point
with lightoil.
3.
Sharpenand balance
17

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