Delta 900585 Instruction Manual download pdf (Page 12)

DRILLING HOLES

TO DEPTH

Where a number of holes are to be drilled to exactly the

same depth, the stop nuts on the threaded stop rod are

used as follows:

1. Lower the spindle until the pointer (A) Fig. 28, lines

up with the mark on the scale (B) you wish the depth to

be. Then thread the lower stop nut (C) down to contact

the depth stop (D) on the side of the head. Return the

spindle to the up position and tighten the upper stop nut

(E) against the lower stop nut (C).

2. Drill a test hole to check the adjustment and readjust

if necessary. All holes will be drilled to the depth indicated

by the setting of the lower stop nut (C) Fig. 28, as it

contacts the depth stop (D) when the spindle is lowered.

Fig. 28

Fig. 29

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:

WARNING: MAKE SURE THE TOOL IS DISCONNECTED FROM THE POWER SOURCE.

1. Loosen the two nuts (B) Fig. 29, approximately 1/4”. Do not remove nuts (B) from shaft (C).

2. While firmly holding spring housing (A) Fig. 29, pull out housing and rotate it until the boss (D) is engaged with the

next notch on the housing. Turn the housing counter-clockwise to increase and clockwise to decrease 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.

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Delta 900585 Instruction Manual Page 12