Jet JDP-17, Operating Instructions And Parts Manual

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Figure 18
8.7 Changing spindle speeds
Refer to Figure 19.
1. Disconnect machine from power source.
2. Open belt cover. Loosen knob (A, Figure 19)
and pull tensioner (B) away from belt to
release tension.
3. Consult speed chart (C) and position belts
accordingly.
Note: The center pulley can be pushed to front
or back to release tension to either belt, as
needed. When front belt is correctly
positioned, push center pulley backward to
tighten front belt and allow rear belt to slide
onto the pulleys.
4. Make sure belts are properly seated in the
grooves of each pulley.
5. Push tensioner (B) into belt and tighten knob
(A). Close hood.
Figure 19
8.8 Depth stop
The depth stop is used for repetitive drilling of
holes of identical depth.
Depth stop can be established by one of two
procedures:
Method #1:
Refer to Figures 20 and 21.
1. Loosen lock handle (G, Figure 21).
2. Use downfeed handles (D, Figure 21) to lower
the bit until it just contacts the top surface of
workpiece, as shown in Figure 20.
3. Hold downfeed handle in position, and rotate
scale ring (E, Figure 21) to zero. This sets the
workpiece surface as your zero reference
point.
4. Move workpiece out from under bit, and rotate
downfeed handle to lower bit until scale ring
(E) reads your desired depth.
5. Hold downfeed handle in this position, and
rotate lock ring (F) counterclockwise as far as
it will turn. You should be able to feel and hear
when the lock ring reaches the end of its
rotation.
6. Tighten lock handle (G).
7. The bit can now be repeatedly lowered to the
pre-set depth using the downfeed handles.
8. To release the depth stop, loosen lock handle
(G).
Figure 20
Figure 21
Method #2:
Refer to Figures 22 and 23.
1. Mark the desired depth of cut on the side of
the workpiece (Figure 22).
2. Use downfeed handle (D, Figure 23) to lower
the bit to the mark. Hold downfeed handle in
position.