Delta 17-965 Instruction Manual download pdf (Page 12)

CHANGING SPEEDS AND ADJUSTING BELT TENSION

1. Open the top cover (A) Fig. 18.

2. Loosen the lock-knob (B) Fig. 18 and the tension knob (located on the other side of the head casting) and move the

tension lever (C) forward.

3. Position both belts (D) Fig. 18 on the desired steps of the spindle pulley, center pulley, and motor pulleys according to

the chart.

4. After the belts are positioned, move the tension lever (C) Fig. 19 to the rear until the belts are properly tensioned.

NOTE: The belt should be just tight enough to prevent slipping. Excessive tension will reduce the life of the belt, pulleys, and

bearings. Tension is correct when you can flex the belt (C) about 1" out of line, midway between the pulleys using light finger

pressure.

5. Tighten the two tension lock knobs (B), one of which is shown.

DISCONNECT MACHINE FROM POWER SOURCE.

Fig. 18

Fig. 19

When you want to drill a number of holes to the same depth, use the stop nut (A) Fig. 20 on the threaded stop rod (B).

DRILLING HOLES TO DEPTH

DISCONNECT MACHINE FROM POWER SOURCE.

Fig. 20

NOTE: Twelve spindle speeds are available on the drill press. A belt-positioning speed chart (E) Fig. 18 is located on the

inside top cover of the drill press.

1. Insert the bit into the chuck.

2. Lower the chuck (C) Fig. 20, and the drill bit to your

chosen depth by rotating the pinion shaft handles (D).

Lock the quill in position by tightening the quill locking

lever (E).

NOTE: The quill locking lever (E) is spring-loaded. Change

it by pulling out on the handle and repositioning the hub of

the handle on the nut located underneath the hub.

3. Depress the spring-loaded button (F) Fig. 20 and move

the stop nut (A) until the bottom of the nut (A) contacts

the stop (G). Loosen the quill locking-lever (E) to allow

the chuck and drill bit to return to the up position.

4. Connect the machine to the power source and drill a

test hole to check the adjustment. Readjust, if

necessary, by rotating the stop nut (A) Fig. 20 for fine

adjustment. You will not have to depress the button (F)

while rotating the stop nut (A) for fine adjustment.

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Delta 17-965 Instruction Manual Page 12