RIDGID R4221 Operator's Manual page 14

ASSEMBLY
MOUNTING HOLES
See Figure 10.
WARNING:
Before starting any cutting operation, clamp or bolt
your miter saw to a workbench or an approved
miter saw stand. If a miter saw stand is used, read
operator's manual and follow the instructions for the
miter saw stand. Never operate your miter saw on
the floor or in a crouched position. Failure to heed
this warning can result in serious personal injury.
The compound miter saw should be mounted to a firm
supporting surface such as a workbench, mounting board,
or miter saw stand. The saw base has four mounting
holes. If using bolts, they should be of sufficient length to
accommodate the saw base, lock washers, hex nuts, and
the thickness of the workbench or other mounting surface.
Tighten all bolts or screws securely.
The hole pattern for mounting to a workbench is shown in
figure 10. Carefully check the workbench after mounting to
make sure that no movement can occur during use. If any
tipping, sliding, or walking is noted, secure the workbench
to the floor before operating.
USING THE DEPTH GUIDE
See Figure 11.
When used, the depth guide limits the downward travel of
the blade when cutting dadoes and other non-through cuts.
To use the depth guide:
 Unplug the saw.
 Rotate the depth stop outward.
 With the depth control knob touching the depth stop,
adjust the depth control knob by turning the knob until
the desired depth of cut is attained.
 A wooden spacer must be placed between the workpiece
and the fence to create a distance of 2-1/2 inches
between the workpiece and the fence for a consistent
depth of cut in the workpiece. Use the work clamp to
clamp the spacer and another suitable clamp to clamp
the workpiece. Make the slide cut at the desired depth.
See Figures 30 and 31.
 Rotate the depth stop inward for normal through cuts.
NOTE: The depth stop must be pushed in before locking/
unlocking the saw arm.
LOCATIONS FOR HOLE PATTERN
SAW
BASE
DEPTH CONTROL
KNOB
DEPTH
STOP
14 - English
TRACE HOLES AT THESE
Fig. 10
HEAD LOCK
PIN
Fig. 11