Knife Adjustment
The Model W1683 is equipped with both springs and jack screws for knife adjustment. These two options have been provided for operator preference. Both types have advantages and disadvantages. Springs allow adjustments to be made quickly, while jack screws are more accurate. The following instructions offer suggestions for both methods, followed by the procedures for tightening the gib bolts.
Springs under the knives exert upward pressure while
To adjust the knives using the springs:
1.Unplug the machine from the power source!
2.Lower the jack screws completely to get them out of the way. Loosen the gib bolts so the knife will move upward from the pressure of the springs.
3.Place the knife setting jig on the cutterhead so both feet sit solidly on the cutterhead and so that the center of the jig pushes down on the knife (similar to Figure 16). Make sure equal pressure is placed on both ends of the jig and that the jig is parallel with the cutterhead.
4.Tighten the knives by following “tightening” instructions on the next page.
Figure 17. Understanding cutterhead assembly.
Jack Screws support the knives from underneath. By threading the jack screws in or out, you can precisely control the knife height.
To adjust the knives using the jack screws:
1.Unplug the machine from the power source!
2.Loosen the gib bolts and remove the gib and knives. Remove all of the springs and place them in a plastic bag. Tape the bag to the inside of the cabinet so they do not get lost.
3.Place the knives, gibs, and gib bolts back in the cutterhead as they were before removal. Make sure the knives are resting on the jack screws when you install them.
4.Place the knife setting jig on the cutterhead so both feet sit solidly on the body of the cutterhead. If the knife does not allow the jig to sit on the cutterhead evenly, raise or lower the knife with the jack screws to adjust as needed.
5.Tighten the knives by following the “tightening” instructions on the next page.
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