MACKISSIC SC300M, Owner'S Manual

Page: 19 / 37

Replacing the Chipper Knife
Tools and Supplies needed:
•
Two 1/2" Wrenches
•
3/16" Allen Wrench
•
Awl
•
Gloves
1. Use two 1/2" Wrenches to remove the Shredder Hopper ( Figure 17 ).
2. Use a 1/2" Wrench to remove the Chipper Hopper.
Figure 17
3. Rotate the Rotor Assembly using a stick until the three countersunk Allen
Screws attaching the Knife to the Rotor are visible through the Chipper Hopper
Opening (
Figure 18 ).
4. Clean out the heads of the Allen Screws with an awl or sharp tool.
5. Insert a 3/16” Allen wrench into the head of a screw and a 1/2" Wrench
on the Locknut on the inside ( Figure 19 ) and remove the Locknut and Screw.
Tip: You may want to support the Rotor by inserting a block of wood under the
knife while loosening the Locknuts and Screws ( Figure 20 ).
6. Repeat Step 5 for the remaining two Allen Screws.
7. Remove the dull or damaged Knife and visually inspect the Chipper
Rotor Slot and Knife mounting area and be sure they are clean. Metal burrs may
need filing so that the replacement Knife will be able to mount flush against
Figure 18
the Chipper Rotor.
8. Install a new or sharpened Knife and finger tighten the Allen Screws and
Locknuts to hold the Knife to the Rotor.
9. Using a 3/16" Allen Wrench on the Screw and a 1/2" Wrench on the
Locknut, tighten the center Screw, then tighten the outer Screw, and finally
tighten the inner Screw.
10. Double-check all three Screws for tightness one more time.
11. Reinstall the Shredder and Chipper Hoppers.
Shredder
Shredder
19