Powermatic 1285 Adjustments, Drive Belt Tension, Setting Outfeed Table Height

Adjustments

Disconnect jointer from power supply before making adjustments.

Drive Belt Tension

To check the tension of the drive belts:

1.Remove the three cap nuts and flat washers on the pulley cover with a 9/16 wrench, and remove the guard to expose the belts and pulleys. See Figure 9.

NOTE: The hex nuts and flat washers on the threaded rods (A, Figure 9) should be left in place; they keep the pulley cover from bending as it is being tightened back into place with the cap nuts.

2.There should be a small amount of deflection in the belt when pressing it midway between the pulleys with moderate finger pressure (Figure 10).

3.If the belts need tightening, loosen the lower hex nut (A, Figure 11) on the motor base with a 19mm wrench.

4.Turn the top hex nut (B, Figure 11) clockwise until proper tension is achieved.

5.Retighten lower hex nut (A, Figure 11).

NOTE: The belts should be inspected again after the first few times the machine is used, as the belts may stretch slightly during the “breaking-in” process.

Setting Outfeed Table Height

For accurate work in most jointing operations, the outfeed table must be exactly level with the knives/inserts at their highest point of revolution. The outfeed table on the Model 1285 has been pre-set at the factory to the proper height in relation to the cutterhead. However, the level of the outfeed table should be checked in case of slight misadjustment during shipping. Outfeed table height should also be inspected after re- setting or replacing knives/inserts.

1.The outfeed table has a stop screw (A, Figure 12) which, when contacting the edge of the table as shown, will ensure the outfeed table is at the proper height. Loosen the handwheel (C, Figure 12) and raise the outfeed table adjustment arm (D, Figure 12) until this stop screw (A, Figure 12) contacts the edge of the table as shown.

Figure 9

Figure 10

Figure 11

Figure 12

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