Figure 26

10.5Riving knife alignment

The riving knife must be aligned with the blade for proper and safe operation of the table saw. This has been set by the manufacturer, but should be verified by the operator.

1.Disconnect machine from power source.

2.Install riving knife and tighten lever (H, Figure 18).

3.Place a straight edge against blade and riving knife; it should lie flush against both surfaces. See Figure 27.

4.If correction is needed, remove straight edge, table insert, and riving knife and locate four set screws (E, Figure 28) through the corner holes of clamp block.

5.Rotate any of the four set screws as needed to tilt the angle of the clamp block, and thus the riving knife.

6.Install riving knife and verify the setting with the straight edge. Make further adjustments as needed.

Figure 27

Figure 28

10.6Low profile riving knife

A low profile riving knife is included with your saw. It mounts and adjusts in the same manner as the standard riving knife. The low profile riving knife sits just below top of blade and is used for making non-through cuts. The blade guard is not used with this knife, so extra precautions should be taken during operation.

10.7Trunnion adjustment

If backlash develops in the trunnion assembly, it can be adjusted out using the screws (6mm hex key) at front and back of cabinet (F, Figure 25 shows front screw). Front and rear trunnions should receive the same amount of spring tension from the screws.

10.8Table to blade alignment

Refer to Figures 29 and 30.

The table has been squared to the blade by the manufacturer and no adjustment is necessary now. If cuts become inaccurate, check table-blade squareness and correct if necessary. Use the miter slot to do this:

1.Disconnect saw from power source.

2.Raise blade to maximum height.

3.Mark one tooth (A, Figure 29) with a grease pencil and position the tooth slightly above the top edge of table at the front.

4.Raise the miter gauge slightly out of its slot to serve as a shoulder. Using a sliding square (B) against the side of the bar, slide the scale over until it touches the tip of the blade, and lock the scale in position.

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Powermatic 64B Riving knife alignment, Low profile riving knife, Trunnion adjustment, Table to blade alignment