Changing Spindle Speeds; Return Spring Adjustment - Jet JDP-10M Mode D'emploi

With your other hand, advance the
lock nuts (A, Fig. 9) on the depth stop
(B, Fig. 9) until they touch the stop
bracket.
Fig 9
The drill bit will now advance only to
this point.
To release, advance the nuts
counterclockwise to the top of the
depth stop.

7.3 Changing Spindle Speeds

Loosen the locking screw on the
pulley cover, then open the cover.
A spindle speed and belt arrangement
chart is found on the inside of the belt
cover (A, Fig. 10). Refer to this chart
whenever changing speeds.
Fig 10
To change spindle speeds:
Unplug the machine from the power
source.
Loosen two side bar bolts found on
each side of the head assembly. (A,
Fig. 11).
Fig 11
Bring the motor base as close to the
head as possible.
Change the belts location according
the speed chart and the speed you
desire.
Tension the belt and tighten two slide
bar bolts (A, Fig. 11).
Belts are properly tensioned when
finger and thumb pressure midway
between the two pulleys causes
approximately 10 mm deflection.
Close and lock the pulley cover.
7.4 Table Tilt Adjustment
Disconnect the machine from the
power source (unplug).
Remove the alignment pin (B, Fig. 12)
first by turning the nut (A, Fig. 12)
clockwise.
Fig 12
Loosen the hex cap bolt (C, Fig. 12) to
tilt the table.
7
Caution:
Only loosen the hex cap bolt slightly,
otherwise the table assembly will
separate from the column and fall.
Tighten the hex cap bolt.
The alignment pin only works at 90°
and must be reinserted when the table
is returned to 90°.

7.5 Return Spring Adjustment

Disconnect the machine from the
power source (unplug).
The return spring is adjusted at the
factory and should not need further
adjustment. If adjustment is
necessary:
Unplug the machine from the power
source.
Loosen two lock nuts (A, Fig. 13)
approximately 6mm (do not remove).
Fig 13
Firmly hold the coil spring cover (B,
Fig. 13).
Pull out the cover and rotate until the
pin (C, Fig. 13) on the return spring
plate engages the next notch in the
coil spring cover. Turn the cover
clockwise to decrease tension and
counter-clockwise to increase tension.
Tighten two lock nuts (A, Fig. 13). Do
not over-tighten. Nuts should not
contact the housing when tight.
8. Maintenance and inspection
General notes:
Maintenance, cleaning and repair
work may only be carried out after
the machine is protected against
accidental starting by pulling the
mains plug.