Model G0725 (Mfd. Since 02/20)
-35-
Replacing
Cutterhead Knives
The Model G0725 jointer has a two-knife
cutterhead. Under normal operation these knives
will become dull and need to be sharpened or
replaced. Refer to
Troubleshooting (Page 31) to
determine if the knives may be dull.
You can order new knives or a knife hone from
Grizzly, see
Accessories on Page 29.
To replace cutterhead knives:
1. DISCONNECT MACHINE FROM POWER.
2. Carefully rotate the cutterhead until clamp
screws are accessible.
6. Install the knife and clamp in the cutterhead
and slightly tighten each of the clamp screws
in sequence, as shown in
Figure 46.
Note: By tightening the clamp screws out of
sequence, the shape of the knife may be affected,
hampering the jointing capabilities of the machine.
Following the tightening sequence reduces that
possibility.
7. Repeat Step 6 for the second cutterhead
knife.
8. Check the alignment of the knives to the
outfeed table. They must be parallel. If the
knife is not parallel to the outfeed table, use
the knife adjustment jack screws (see
Figure
47) to fine tune the position of the knife. Refer
to
Checking Outfeed Table Alignment on
Page 17 for detailed instructions for adjusting
the position of the knife.
Figure 46. Clamp screw tightening sequence.
1
2
3
4
Figure 47. Knife adjustment jack screws.
Knife
Adjustment
Jack
Screws
9. Following the tightening sequence (see
Figure 46), final tighten each of the clamp
screws.
10. Return the cutterhead guard to the operating
position and ensure it is working properly.
Re-align the fence and tables as needed.
Test the jointer on a piece of scrap material.
4. Repeat Steps 1–3 for the second cutterhead
knife.
5. Clean the cutterhead thoroughly before
installing new knives or re-installing sharp-
ened knives.
Figure 45. Cutterhead knife clamp screws.
Cutterhead
Clamp Screws
3. Remove the four cutterhead clamp screws
fastening the knife to cutterhead (see
Figure 45). Carefully remove the knife and
clamp from cutterhead.
Cutterhead knives are sharp. Use caution
when handling cutterhead knives. Use
gloves to reduce the risk of injury.
Summary of Contents for G0725
Page 44: ......
