Sears 247.79585 - Manual (Page 14)

Chute Deflector
Hand Knobs
FIGURE 18.
SHARPENING OR REPLACING THE BLADES
CHIPPER BLADES
• Disconnect spark plug wire and move it away from
spark plug.
• Remove the flail screen as instructed in previous
section.
• Remove the chipper chute by removing tiree hex
nuts and washers. A 1/2" wrench is requ red. See
figure 18.
NOTE; When reassembling, the cupped washer goes
on the bottom of the chipper chute with tho cupped
side against the chute.
• Rotate the impeller assembly by hand jntil you
locate one of the chipper blades in the chipper
chute opening. Remove the blade, using a 3/16"
alien wrench on the outside of the blade and
1/2"
wrench on the Impeller assembly (inside ihe hous­
ing). See figure 19.
• 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). Torque bolts and nuts to 250-350
inch pounds.
SHREDDING BLADE
The shredding blade may be removed for sharpening
or replacement as follows.
• Disconnect spark plug wire and move it away from
spark plug.
• Lower the hopper assembly. Block up the housing.
See figure 20.
• 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.
• Remove the back-up plate.
NOTE: When reassembling, make certain the open­
ing on the back-up plate is toward the bottom of the
unit. The back-up plate may be reversed to provide a
new cutting edge.
FIGURE 20.
Wrench
FIGURE 19.
Loosen the two hand knobs and cupped washers
which secure the chute deflector, and raise the
chute deflector.
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
(2
X 4) into the chute opening.
Remove the two outside screws on the blade,
using a 3/16" alien wrench and a 1/2" wrench.
Remove the blade by removing the center bolt, lock
washer and flat washer.
14