Craftsman 247.795890 Owner's Manual page 14

9 horsepower 3 cutting stage mulching and bagging chipper-shredder
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HandKnobs
FIGURE 18,
SHARPENING ORREPLACING THEBLADES
CHIPPER BLADES
= Disconnect spark plug wire and move it away from
spark plug.
• Remove the flail screen as instructed in previous
section.,
o Remove the chipper chute by removing three hex
nuts and washers.. A 1/2" wrench is required. See
figure 18..
NOTE: When reassembling, the cupped washer goes
on the bottom of the chipper chute with the cupped
side against the chute..
e Rotate the impeller
assembly
by hand until you
locate one of the chipper
biades in the chipper
chute opening
Remove the blade, using a 3/16"
allen wrench on the outside of the blade and 1/2"
wrench on the impeller assembly (inside the hous-
ing), See figure 19
e Remove the other blade in the same manner
Replace or sharpen blades. If sharpening,
make cer-
tain to remove an equal amount
from each blade
Reassemble in reverse order.
Make certain blades are reassembled
with the sharp
edge facing the direction
shown in figure 18 (sharp
edge is assembled toward the slotted opening in the
impeller assembly).r
SHREDDING BLADE
The shredding blade may be removed for sharpening
or replacement as follows.
o Disconnect spark plug wire and move it away from
spark plug.
o Lower the hopper assembly. Block up the housing
See figure 2Q
o Remove the six hex lock nuts and lock washers
from the housing weld bolts using a 1/2" wrench..
Separate the chipper-shredder
into two halves
o Remove the back-up plate.
NOTE: When reassembling,
make certain the open-
ing on the back-up piate is toward the bottom of the
uniL The back-up plate may be reversed to provide a
new cutting edge,
Allen
Screws
Pipe
Sharp
FIGURE 19.
FIGURE 20.
Torque
Wrench
o Loosen the two hand knobs and cupped washers
which secure the chute deflector,
and raise the
chute deflector
a Insert a !/2" or 3/4" diameter pipe through the ftaii
screen into the impeller to keep it from turning, or
remove the flail screen and insert a piece of wood
(2 x 4) into the chute opening,
e Remove
the two outside
screws
on the biade,
using a 3/16" allen wrench and a 1/2" wrench.,
e Remove the blade by removing the center bolt, lock
washer and flat washer
14

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