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11
Sharpening Or Replacing The Shredder
Blade
WARNING: The impeller’s chipper blades
are sharp. Wear leather work gloves to
protect your hands.
• Stop the engine and make certain that all moving
parts have come to a complete stop.
• Disconnect the spark plug wire and ground against
the engine.
• Lower the hopper assembly and block up the
housing.
• Remove the six hex lock nuts and flat washers from
the weld studs on the flail housing. Retain the
hardware.
• Carefully separate the hopper assembly from the
impeller assembly and remove the support plate.
NOTE: When reassembling the support plate, make
certain the embossed tab faces inward towards the
impeller.
• Remove the two wing knobs and cupped washers
that secure the discharge chute and raise the
chute.
• Insert a 1/2” or 3/4” diameter pipe through the flail
screen into the impeller to keep it from turning or
remove the flail screen and insert a piece of wood
into the chute opening.
• Remove the two internal hex screws which secure
the shredder blade to the impeller. See Figure 11.
Figure 11
NOTE: Use a 3/16” hex key (Allen) wrench on the
outside of the shredder blade and a 1/2” box (or socket)
wrench on the inside of the shredder blade. Hold the
Allen wrench stationary and rotate the box (or socket)
wrench to loosen the nut.
• Remove the hex bolt, lock washer and flat washer
to completely free the shredder blade.
NOTE: Use caution when removing the blade to avoid
contacting the weld studs on the housing.
IMPORTANT:
When sharpening the blade, follow the
original angle of grind as a guide. It is extremely
important that each cutting edge receives an equal
amount of grinding to prevent an unbalanced blade. An
unbalanced blade will cause excessive vibration when
rotating at high speeds and may cause damage to the
unit. The blade can be tested by balancing it on a
screwdriver or nail. Remove metal from the heavy side
until it is balanced evenly.
IMPORTANT:
When reassembling the blade, tighten
center bolt to between 550 and 700 in.-lbs. and the two
outer bolts to between 250 and 350 in.-lbs.
Storing Your Chipper Shredder
• Clean the equipment thoroughly.
• Wipe equipment with an oiled rag to prevent rust.
• Refer to engine manual for correct engine storage
instructions.
• Store unit in a clean, dry area. Do not store next to
corrosive materials such as fertilizer.
Discharge Chute
Shredder
Internal
Hex Bolt,
Weld Stud
Blade
Hex Screw
Impeller
Lock Washer &
Flat Washer