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Sharpening - Craftsman 79964 Owner's Manual

9 hp mulching and bagging chipper-vacuum
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Discharge
Chute
Assembly
Belt
Cover
HexBolt
FlatWasher
FlexNut
FIGURE 18.
npping
Screws
!
Remove
the two hex bolts and hex nuts which
extend through
the housing.
Lift the flail screen
from inside the housing. See figure 19.
Flail Screen
Hex Bolts
Hex Nuts
Self-Tapping
Screws
FIGURE 20.
Remove the access plate by removing two hex lock
nuts. See figure 21.
Hex
Nuts
FIGURE 19.
• Clean
the screen
by scraping
or washing
with
water. Reinstall the screen.
NOTE: Be certain to reassemble
the flail screen with
the curved side down as shown in figure 19:
SHARPENING OR REPLACING CHIPPER BLADES
Disconnect
the spark plug wire and move away
from the spark plug.
Remove the flail screen as instructed in the previ-
ous section.
Remove the plastic belt cover on the front of the
engine by removing the two self'tapping screws.
See figure 20.
FIGURE 21.
15
• Locate one of the ch!pper
blades
in the access
plate opening by rotating the impeller assembly
by
hand.
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 housing.
Torque hardware to 250-350 inch pounds.
Remove
the other
blade
in the same manner.
Replace
or sharpen blades,
ff sharpening, make
certain
to remove
an equal amount
from each
blade. Reassemble
in reverse order.
NOTE: Make certain blades are reassembled
with the
sharp edge facing upward, as viewed from the access
plate opening.

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247.799640