5.After the belt is positioned on the desired steps of the motor and spindle pulleys, pivot motor away from the drill press head until the belt is properly tensioned and tighten tension lock knob (B) Fig. 30. The belt 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 belt (C) can be flexed about one inch out of the line midway between the pulleys using light finger pressure.
DRILLING HOLES TO DEPTH
Where 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. 31, 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. 31. NOTE: Scale (D) is calibrated in both inches and millimeters.
ADJUSTING SPINDLE
RETURN SPRING
The spindle is automatically returned to its upper most position upon release of the handle. It is recommended that the handle be allowed to slowly return to the top position after all holes have been bored in the material. This spring has been properly adjusted at the factory and should not be disturbed unless absolutely necessary. To adjust the return spring, proceed as follows:
1.Disconnect the tool from the power source.
2.Loosen the two nuts (B) Fig. 32, approximately 1/4". Do not remove nuts (B) from shaft (C).
3.While firmly holding spring housing (A) Fig. 33, pull out housing and rotate it until the boss (D) is engaged with the next notch on the housing. Turn the housing counterclockwise to increase and clockwise to de- crease spring tension. Then tighten the two nuts (B) to hold the housing in place. IMPORTANT: Inside nut (B) should not contact spring housing (A) when tight.
C
B
Fig. 30
B
D
C A
Fig. 31
A
B
C
Fig. 32
D
B
A
Fig. 33
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