Grizzly G0517g - Manual (Page 20)

-18-
Model G0517 Mill/Drill
Figure 29. Loosening lock knob.
Belt positions on the pulleys govern the spindle
speed. A chart under the belt cover shows the
belt positions needed for each available speed.
To change speeds:
1. UNPLUG THE MILL/DRILL!
2. Loosen the lock knobs on each side of the
headstock ( Figure 29), and use the belt ten-
sion lever to take tension off of the V-belts.
Changing Speeds
3. Find your desired speed on the speed chart
( Figure 30) and move the V-belts to the indi-
cated positions in the pulley grooves.
4. Use the belt tension handle to tighten the V-
belts, then tighten the lock knob and close the
belt cover.
Figure 30. Speed chart.
Installing Drill Chuck
The drill chuck fits on the arbor with a taper fit.
To install the drill chuck:
1. UNPLUG THE MILL/DRILL!
2. Prepare the mating surfaces on the arbor
taper and the chuck by cleaning them thor-
oughly.
3. Retract the chuck jaws all the way inside of
the chuck.
4. Push the chuck onto the arbor taper, and
using a wood block and hammer or mallet as
shown in
Figure 28, hit the chuck once with
moderate force to secure it on the arbor.
Note: Hitting the chuck directly with a steel
hammer may damage the chuck, making it
unsafe to use.
Figure 28. Seating the chuck on the arbor.
Belt Tension
Lever
Lock Knob