Craftsman 247.370480 manual Blade Care, Block, Wood, Bolt

BLADE CARE

Whenremovingthe cuttingbladefor sharpeningor replacement, protectyour handswitha pairof heavyglovesoruse a heavyragto holdthe blade.Becertainto stopmotorand removekey.

Periodicallyinspectthe bladeadapterfor cracks,especiallyif you strikea foreignobject.Replacewhen necessary.Followthe steps belowfor bladeservice.

Blade Removal

Stopthe motorandremoveignitionkey.Turnthe moweron its side.

. Placea 2x4blockof woodapproximately8.5" longbetweenthe deckhousingandthe cuttingbladeto actas a stabilizer.See Figure12.

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Blade Sharpening

IMPORTANT:If any metalseparationispresent,replacethe blades withnew ones.

To properlysharpenthecutting blades,removeequalamountsof metalfrombothendsof the bladesalongthe cuttingedges,parallelto the trailingedge,at a250to 300angle.SeeFigure13.

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Block of	Locking	_	Blade
Wood	Plate	_	_"'Bolt

Figure12

3.Loosenand removethe bladebolt,lockingplate,andblade.See Figure12.

Figure13

NOTE: It is importantthateachcuttingbladeedgebe groundequally to maintainproperbladebalance.A poorlybalancedbladewill cause excessivevibrationand maycausedamageto the mowerandresult in personalinjury.The bladecan betestedby balancingit ona round shaft screwdriverGrindmetalfromtheheavysideuntil. it balances evenly.

An unbalancedbladewill causeexcessivevibrationwhen rotating at highspeeds.It maycausedamageto mowerandcould break lcaus ngpersona njury.

Blade Installation

1.Placethe cuttingblade,lockingplate,andbladebolton the motor shaft andthreadthe bladeboltin fingertight.

NOTE: Makecertainto replacethe partsinthe exactorderinwhich theywere removedWhen. installingthe cuttingblade,be sureit is installedwiththe curvedendspointingtowardsthe mowerdeckand not towardsthe ground.

2.Torquethe bladeboltdownusinga torquewrenchto assurethe bolt is tightenedproperly.The recommendedtorquefor the blade bolt is 170-220in. Ibs.

Toensuresafeoperationof your mower,periodicallycheckthe blade bolt for correcttorque.

Thebladehardwareis notonly usedto attachthe bladeassembly, but isalso an insulatedsafetydeviceandshouldneverbealteredin anyway.If replacementis necessary,useoriginalequipmentpartsas showninthe partslist.

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