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FUNCTIONAL DESCRIPTION
FOREWORD
Porter-Cable Model 643 Cordless Jigsaw is designed for cutting materials of
the following MAXIMUM thickness: wood 4
1
/3", plastic and fiberglass 1
1
/4",
aluminum and nonferrous metals
13
/16", mild steel
3
/8", and stainless steel
1
/8".
ASSEMBLY
ANTI-SPLINTER BASE INSERT INSTALLATION
The anti-splinter base insert is used to
reduce chipping and splintering of the
top fibers of plywood, paneling, and
other splinter prone materials. When this
insert is used it is not necessary to have
the good or finished side of the work
down during the cutting operation.
Install the insert as shown in Fig. 1.
NOTE: When using the anti-splinter
insert, the base should be set to the
forward most position (Fig. 9).
ANTI-MAR PLASTIC SUB-BASE INSTALLATION
CAUTION: REMOVE BATTERY PACK.
The anti-mar plastic sub-base is used when cutting on finished surfaces to
prevent the normal metal base from scratching, gouging, or otherwise marring
the surface of the material to be cut.
To install the plastic sub-base, remove the six screws (Fig. 9) from the bottom
of the base, remove the metal sub-base, place the plastic sub-base on the
saw, and reinstall the six screws. Be sure to save the metal sub-base for
reuse.
BLADE INSTALLATION
1. Remove anti-splinter insert if installed.
2. Gently squeeze the switch trigger until the blade shaft moves slowly and stop
the motor when the blade shaft is at or near the bottom of its stroke (Fig. 6).
CAUTION: REMOVE BATTERY PACK.
Fig. 2
Fig. 3
A
B
Fig. 1
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