Functional Description, Assembly, Foreword

RECOMMENDED EXTENSION CORD SIZES FOR USE WITH PORTABLE ELECTRIC TOOLS

Length of Cord in Feet

	115V	25 Ft.	50 Ft.	100 Ft.	150 Ft.	200 Ft.	250 Ft.	300 Ft.	400 Ft.	500 Ft.
	230V	50 Ft.	100 Ft.	200 Ft.	300 Ft.	400 Ft.	500 Ft.	600 Ft.	800 Ft.	1000 Ft.

	0-2	18	18	18	16	16	14	14	12	12

Rating	2-3	18	18	16	14	14	12	12	10	10

	3-4	18	18	16	14	12	12	10	10	8
	4-5	18	18	14	12	12	10	10	8	8
Ampere
	5-6	18	16	14	12	10	10	8	8	6

	6-8	18	16	12	10	10	8	6	6	6
	8-10	18	14	12	10	8	8	6	6	4
Nameplate	8-10	18	14	12	10	8	8	6	6	4

	10-12	16	14	10	8	8	6	6	4	4

	12-14	16	12	10	8	6	6	6	4	2
	14-16	16	12	10	8	6	6	4	4	2

	16-18	14	12	8	8	6	4	4	2	2

	18-20	14	12	8	6	6	4	4	2	2

FUNCTIONAL DESCRIPTION

FOREWORD

Your Porter-Cable circular saw is designed for use with 71/4" 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 71/4" 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. DISCONNECT TOOL FROM POWER SOURCE.

2.Push in blade lock (A) Fig. 1, and rotate blade by hand until lock engages blade arbor.

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.

Fig. 1

Porter-Cable 447 instruction manual Functional Description, Assembly, Foreword, Removing the Blade