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FUNCTIONAL DESCRIPTION
FOREWORD
Your Porter-Cable circular saw is designed for use with 7
1
/4" diameter blades
that have a
5
/8" diameter bore. Blades must be rated for 6000 RPM operation
(or higher).
A mounting flange kit for diamond-hole blades is available. This kit adapts
the saw for use with 7
1
/4" diameter blades that have a diamond-shaped
mounting hole.
BLADE BRAKE (Model 447 only)
Model 447 is equipped with an electric blade brake that energizes
automatically whenever the trigger switch is released.
ASSEMBLY
REMOVING THE BLADE
1. CAUTION: DISCONNECT TOOL FROM POWER SOURCE.
2. Push in blade lock (A) Fig. 1, and rotate blade by hand until lock engages
blade arbor.
CAUTION: AVOID CONTACT WITH BLADE TEETH TO PREVENT
PERSONAL INJURY.
3. While holding blade lock
engaged, use wrench provided
(B) Fig. 1, and loosen blade
retaining bolt by rotating
counterclockwise.
4. Remove blade retaining bolt,
release blade lock and remove
outer blade flange.
5. Retract telescoping guard
and remove blade.
INSTALLING THE BLADE
1. CAUTION: DISCONNECT TOOL FROM POWER SOURCE.
2. Remove any sawdust that may have accumulated within guards and
around arbor. Check the telescoping guard to insure it is in working order.
3. Clean inner blade flange, retract telescoping guard, and place sharp
blade on arbor making sure teeth point up at front of saw as shown in Fig. 2.
CAUTION: AVOID CONTACT WITH BLADE TEETH TO PREVENT
PERSONAL INJURY.
4. Place outer blade flange on arbor with flange towards blade and flats
mating with those on arbor.
5. Replace blade retaining bolt and finger tighten by turning clockwise.
6. Push in blade lock and rotate blade arbor by hand until lock engages
arbor. Tighten blade retaining bolt with wrench provided just enough to
prevent blade slippage during normal cutting and release blade lock.
7
Fig. 1
B
A
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