Grizzly G9986 Changing Speeds, Depth Stop, To change speeds, To set the depth stop

Changing Speeds

The belt must be moved to change speeds. A chart under the belt cover shows the belt position needed for a given speed.

To change speeds:

1.UNPLUG THE DRILL PRESS!

2.Loosen the lock knob (shown in Figure 15) to take tension off of the V-belt.

Figure 15. Loosening lock knob.

3.Find your desired speed on the speed chart (Figure 16) and move the V-belt to the indi- cated position in the pulley grooves.

Depth Stop

The Model G9986 has a depth stop that allows you to drill repeated non-through holes to the same depth every time.

The depth stop features two hex nuts that can be adjusted to limit spindle travel.

The upper hex nut (jam nut) tightens against the depth nut so it doesn't move during repeated operations.

Figure 17 shows the various components of the depth stop.

Jam Nut

Depth Nut

Depth	Stop
	Bracket
Stop Stud
Figure 17. Depth stop components.
To set the depth stop:

1.Lower the drill bit to the required height.

2.Thread the depth nut down against the stop bracket.

3.Lower the jam nut against the depth nut.

4.Using wrenches, hold the depth nut in place and tighten the jam nut against the depth

nut.

Figure 16. Speed chart.

4.Pull the motor backwards to tighten the V- belt, then tighten the belt tension lock knob and close the belt cover.

-14- Model G9986 8" Drill Press