- 13 -
OPERATION AND USE
ADJUSTING SPINDLE RETURN SPRING
For the purpose of automatically returning the
spindle upward after a hole has been drilled,
a spindle return spring is provided in the
spring housing
4
Fig. 22. 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 drill press from the power
supply.
2. Loosen the nut
6
approximately
1
/
4
". Do
not remove nut
6
from shaft
5
Fig.22.
3. While firmly holding spring housing
7
Fig. 23 pull out housing and rotate it until the
boss
8
is engaged with the next notch on
the housing. Turn the housing anticlockwise
to increase and clockwise to decrease spring
tension. Then tighten nut
6
Fig.23 to hold
the housing in place.
IMPORTANT:
Nut
6
Fig. 23 should not contact spring
housing
7
when tight.
DRILLING HOLES TO DEPTH
Where holes are to be drilled to exactly the
same depth, a depth stop is provided in the
pinion shaft housing
<
Fig.24 and is used as
follows:
1. Loosen lock handle
9
Fig. 24 and rotate
housing
<
until the pointer
;
lines up with
the depth you wish to drill on the scale
:
.
Then tighten lock handle
9
.
2. All holes will then be drilled to the exact
depth, as indicated on the scale.
Fig.22.
Fig.24.
Fig.23.
6
5
4
7
8
6
<
;
9
:
