Sharpening Or Replacing Shredder Blade; Storing Your Chipper Shredder - MTD 24A-462G729 Operator's Manual

6. Removethe blade by removing the internalhex
screws,lock washers,and hexnuts which secureitto
the impeller. R etainthe hardware.See Figure13.
NOTE: Usea 3/16"hex key (Allen)wrenchon the outside
of the blade and a 1/2" box(or socket)wrenchon the
insideof the impeller.HoldtheAllen wrenchstationary
and rotatethe box(or socket)wrenchto loosenthe nut.
7. Installa replacement b lade (PartNo. 781-0490)with
the hardwareremovedearlieror sharpen.
IMPORTANT: W hensharpeningthe blade,protecthands
by usinggloves.Followthe originalangle of grind and
make sureto removean equalamountfrom eachblade.
8. To replacethe otherblade,rotatethe impellerto
exposethe secondblade and repeatthe stepsabove.
NOTE: Makecertainbladesare reassembledwith the
sharpedge facing upward.Torquehardwareto 250- 300
in. Ibs.
Figure 13
Sharpening Or Replacing The
Shredder Blade
_ ARNING:The impeller'schipperblades
are sharp. Wearleather work gloves to
__ protectyour hands.
1. Stop theengineand makecertainthat all moving
parts havecome to a completestop.
2. Disconnectthe sparkplug wireand groundagainstthe
engine.
3. Lowerthe hopperassemblyand block up the housing.
4. Removethe six hex lock nuts and flat washers
from the weldstudson theflail housing.Retainthe
hardware.
5. Carefullyseparatethe hopperassemblyfromthe
impellerassemblyand removethe support plate.
NOTE:When reassembling the supportplate,make
certain theembossedtab facesinwardtowardsthe
impeller.
6. Removethe two wing knobsand cuppedwashersthat
securethe chute deflectorand raisethe chute.
7. Inserta 1/2"or 3/4" diameterpipethroughthe flail
screen intothe impellerto keepit fromturningor
removethe flail screenand inserta pieceof wood into
the chuteopening.
8. a. Removethe two internalhex screws,lock washers,
and hexlock nuts which securethe shredderblade
to the impeller.
b. Removethe hexbolt, lock washer,and flat washer
to completelyfree shredderblade.See Figure14.
Figure 14
NOTE:Use a 3/16" hexkey (Allen)wrenchon the
outsideof the shredderbladeand a 1/2" box(or socket)
wrenchon the insideof the shredderblade.Holdthe
Allenwrench stationaryand rotatethe box (or socket)
wrenchto loosenthenut. Usecautionwhen removing
the bladeto avoidcontactingthe weldstudson housing.
IMPORTANT:Whensharpeningthe blade,follow
the originalangleof grind as a guide.It is extremely
importantthat eachcuttingedge receivesan equal
amountof grindingto preventan unbalancedblade.
An unbalancedbladewill causeexcessivevibration
whenrotatingat high speedsand maycause damage
to the unit. Theblade can be testedby balancingit on a
screwdriver or nail. Removemetalfrom the heavyside
until it is balancedevenly.
Storing Your Chipper Shredder
Thefollowingstepsshouldbe takento prepareyour
chippershredderfor storage.
1. Cleantheequipmentthoroughly.
2. Wipeequipmentwith an oiled ragto preventrust.
3. Referto engine manualforcorrectengine storage
instructions.
4. Storeunit in a clean,dry area. Donot store nextto
corrosivematerialssuchas fertilizer.
WARi ,, I NG
The impeller S
chipper blades and
shredder blade are
work gloves to
protect your hands:
IMPORTANT
Makecertain chipper
blades are reassem-
bled with the sharp
edge facing upward.
Torque hardwareto
250- 300 in. Ibs.
iMPORTANT
When reassemblingthe
shredder blade, tighten
center bolt to between
550 and 700 in.-Ibs.
and the two out bolts to
between 250 and 350
in.-Ibs.
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