4, Removethechipperchutesupportbracefromthe frameby
removingthehexbolts.
5. Rotateimpellerassemblyby handuntil youlocateone of two
chipperbladesinthe chipperchuteopening.
6, Removethebladeby removingtheinternalhexscrews,lock
washers,andhexnutswhich secureit to the impeller.Retainthe
hardware,SeeFigure15,
NOTE:Usea 3/16"hex key(Allen)wrenchon theoutside of theblade
anda 1/2" box(or socket)wrenchonthe insideof the impeller.Hold
theAllenwrenchstationaryand rotatethebox (or socket)wrenchto
loosenthenut.
7. Installa replacementblade(PartNo.742-0544)withthehardware
removedearlierorsharpenand replaceexistingblade.
IMPORTANT:Whensharpeningtheblade,protecthandsby using
gloves.Followtheoriginalangleof grindandmake sureto removean
equalamountfromeachblade.
8. To replacetheother blade,rotatetheimpellerto exposethe
secondbladeandrepeatthe stepsabove.
NOTE: Makecertainbladesare reassembledwiththesharpedge
facingthesamedirectionas whenremoved.Torquehardwareto250
-300in. Ibs.
Theimpeller'schipperbladesand shredderbladearesharp.Wear
leatherworkglovestoprotectyour hands.
SHARPENING OR REPLACING THESHREDDER BLADE
1. Stoptheengineand makecertainthat allmovingpartshave
cometoa completestop.
2. Disconnectthesparkplugwire and groundagainsttheengine.
3. Lowerthehopperassemblyand placeablockundertheflailhousing.
4. Removethesix hexlock nutsandflat washersfromthe weld
studsonthe flail housing.Retainthehardware.
5. Carefullyseparatethehopperassemblyfromtheimpelleras-
semblyandremovetheshredderplate.The shredderplatecanbe
identifiedbyreferringtoitem 29in the partslist on page20 &21.
Impeller
Blade
J
Figure15
Weld Studs,
/
Flail Housing
Figure16
IMPORTANT:Whenreassemblingtheshredderblade,tightencenter
bolttobetween550 and700 in.-Ibs,andthetwo outsideboltsto
between250and350in.-Ibs.
NOTE:Whenreassemblingtheshredderplate,makecertainthe
embossedtabfacesinwardtowardstheimpeller.
6. Removethetwo wingknobsthat securethechutedeflectorand
raisethechute.
7. Inserta 1/2" or 3/4" diameterpipethroughthe flail screenintothe
impellertokeepit fromturningor removetheflail screenand
inserta pieceof woodintothe chuteopening.
8. A.Removethe twointernalhexscrews,lock washers,andhex
locknutswhich securetheshredderbladeto theimpeller.
B.Removethe hexbolt,lock washer,andflat washerto
completelyfreeshredderblade.SeeFigure16.
9. Installa replacementblade(PartNo.742-0544)withthe hardware
removedearlierorsharpenandreplaceexistingblade.
NOTE:Usea 3/16"hex key(Allen)wrenchon theoutsideof the
shredderbladeanda 1/2"box (or socket)wrenchonthe insideof the
shredderblade.HoldtheAllenwrenchstationaryand rotatethebox
(orsocket)wrenchto loosenthenut. Usecautionwhen removingthe
bladetoavoidcontactingthe weldstudson housing.
IMPORTANT:Whensharpeningtheblade,followtheoriginalangle
ofgrind asa guide. It isextremelyimportantthateachcutting edge
receivesanequalamountofgrindingto preventan unbalancedblade.
Anunbalancedbladewillcauseexcessivevibrationwhenrotatingat
highspeedsandmaycausedamageto theunit. Thebladecan be
testedbybalancingit on a screwdriverornail. Removemetalfromthe
heavysideuntilit is balancedevenly.
17