f

Beforeperformingany typeof maintenanceonthe machine,waitfor allpartsto stopmovinganddisconnectthe sparkplugwire. Failure I to followthis instructioncouldresultinpersonalinjuryor property damage.

REMOVING THE FLAIL SCREEN

If the dischargeareabecomesclogged,removetheflail screenand cleanareaas follows:

1.Stopthe engine.Makecertainthe chippershredderhascometo

acompletestop.

2.Disconnectsparkplugwirefromsparkplugandgroundagainst theengine.

3.a. Removethe bagandtwo wingknobsoneachsideof the chute deflector.SeeFigure14.

b.Lift thechutedeflectorupto keepit out of the way.

c.Removethe two hairpinclipsfromeachclevis pinwhichextend throughthe housingandremovepins.

d.Removethe flailscreenfrominsidethe housingandcleanthe screenbyscrapingorwashingwithwater.SeeFigure14.

4. Reinstallthe screen,makingcertainto reassembletheflail screen

f

withthe curveside down.

 

5.Reattachthe chutedeflectorwiththe hardwarepreviouslyremoved andconnectthe bagto unit.

/,

/

/

/

/

/

/

/

Figure14

SHARPENING OR REPLACING CHIPPER

BLADES

1.Disconnectthe sparkplugwireandgroundagainstthe engine.

2.Removethe flail screenas instructedinthe previoussection.

3.Removethe chipperchutebyremovingthree hexnutsand washers.

4.Removethe chipperchutesupportbracefromthe frameby removingthe hex bolts.

5.Rotateimpellerassemblyby handuntilyoulocateoneof two chipperbladesin the chipperchuteopening.

6.Removethe bladeby removingthe internalhexscrews,lock washers,andhex nutswhichsecureit to the impeller.Retainthe hardware.SeeFigure15.

NOTE:Usea 3/16" hexkey(Allen)wrenchon the outsideof the blade anda 1/2" box (orsocket)wrenchonthe insideof the impeller.Hold

the Allenwrenchstationaryandrotatethe box (orsocket)wrenchto loosenthe nut.

7.Installa replacementblade(Part No. 781-0490)withthe hardware removedearlierorsharpen.

IMPORTANT:Whensharpeningthe blade,protecthandsby using gloves.Followthe originalangleof grindand makesureto removean equalamountfromeachblade.

iiiJ

 

Figure15

8,

To replacethe otherblade,rotatethe impellerto exposethe

 

secondbladeandrepeatthe stepsabove.

NOTE: Makecertainbladesarereassembledwiththesharpedge facingupward.Torquehardwareto 250- 300 in. Ibs.

The impeller'schipperbladesandshredderbladearesharp.Wear

 

eatherworkg ovesto protectyourhands.

J

16

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Craftsman 247.776370 manual Removing the Flail Screen, Sharpening or Replacing Chipper, Blades

247.776370 specifications

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