CHANGING SPINDLE SPEEDS AND
ADJUSTING BELT TENSION
1.DISCONNECT THE DRILL PRESS FROM THE POWER SOURCE.
2.Raise the belt and pulley guard (A) Fig. 24.
3.Release tension on the belt by loosening lock knob
(B) Fig. 24, and the tension knob located on the other side of the head casting and moving tension lever (C) forward.
4.Position both belts (D) Fig. 24, on the desired steps of the spindle, center, and motor pulleys as shown. Refer to chart (E) Fig. 24, which is conveniently located on the underside of the belt and pulley guard (A) for belt position and speed charts.
5.After the belts are positioned on the desired steps of the spindle, center, and motor pulleys, move tension lever (C) Fig. 25, to the rear until the belts are properly tensioned and tighten two tension lock knobs (B), one of which is shown. NOTE: The belts should be just tight enough to prevent slipping. Excessive tension will reduce the life of the belt, pulleys, and bearings. Correct tension is obtained when the belts (D) can be flexed approximately one inch at the center of the pulleys using light finger pressure.
| A |
E | D |
| |
| C |
| B |
Fig. 24
DD
C 
B
Fig. 25
DRILLING HOLES
TO DEPTH
When a number of holes are to be drilled to exactly the same depth, a depth stop is provided in the pinion shaft housing and is used as follows:
1.Loosen lock screw (A) Fig. 26, and rotate housing (B) until the pointer (C) lines up with the desired depth indicated on scale (D). Then tighten lock screw (A).
2.All holes will then be drilled to the exact depth as indicated on scale (D) Fig. 26. NOTE: Scale (D) is calibrated in both inches and millimeters.
D
A
C
B
Fig. 26
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