Operation - RIDGID R4221 Operator's Manual

ASSEMBLY
WARNING:
Make sure the spindle lock button is not engaged
before reconnecting saw into power source. Never
engage spindle lock button when blade is rotating.
REMOVING/REPLACING THE ADJUSTABLE
THROAT PLATE
See Figure 15.
When squaring the saw blade, it may be necessary to
move the throat plate away from the blade. Once the saw's
alignment has been confirmed, return the throat plate to its
original position. Never operate the saw without a throat
plate installed.
 Unplug the saw.
 Using the hex wrench provided, loosen the screws
securing the right side of the adjustable throat plate.
NOTE: The throat plate may be adjusted to (near) zero
clearance to support thin materials.
 Slide the throat plate away from the blade as far as
possible.
 Retighten the screws, being careful not to overtighten
which can cause the throat plate to bow or bend.
 Repeat the above steps for the left side of the throat plate.
INSTALLING THE WORK CLAMP
See Figure 16.
WARNING:
In some operations, the work clamp assembly
may interfere with the operation of the blade guard
assembly. Always make sure there is no interfer-
ence with the blade guard prior to beginning any
cutting operation to reduce the risk of serious
personal injury.
The work clamp provides greater control by clamping the
workpiece to the miter table. It also helps to prevent the
workpiece from creeping toward the saw blade. This is
helpful when cutting compound miters. Depending on the
cutting operation and the size of the workpiece, it may be
necessary to use a C-clamp instead of the work clamp to
secure the workpiece prior to making the cut. The work
clamp can be installed and used on either side of the blade.
To install the work clamp:
 Place the work clamp shaft in one of the holes located
behind the sliding miter fence.
 Rotate the knob on the work clamp to move it up or down
as needed.
BLADE
WRENCH
WORK CLAMP
SHAFT
WORK CLAMP
HOLE
17 - English
ADJUSTABLE
THROAT PLATE
CLAMP
Fig. 15
WORK
Fig. 16