Porter-Cable 557 Instruction Manual page 11

10. Lift safety lever (A) Fig. 13, fully retract the plunge mechanism, and
reposition the safety lever as shown in Fig. 14. Slowly release pressure on
plunge mechanism.
11. Reposition blade cover plate to tool, and secure in place with the four
retaining screws (removed in step 1).
Do not operate tool without blade cover installed.
ALIGNMENT PLATE (For Narrow Stock)
When joining narrow material, install the alignment plate (A) Fig. 15 (furnished
with tool). The alignment plate provides added support for narrow material, and
has index marks to aid in centering the cut in the narrow material. Index marks
are provided for 1- 1 / " wide, and 2" wide material. To install alignment plate:
2
To reduce the risk of injury, turn unit off and disconnect it from power
source before installing and removing accessories, before adjusting or when making
repairs. An accidental start-up can cause injury.
A
1. Align alignment plate (A) with fence (see Fig. 15).
2. Slide alignment plate onto fence until it is seated (see Fig. 16).
NOTE: When alignment plate is installed, increase tool depth setting by
allow for thickness of the alignment plate).
3. To remove alignment plate, lift lightly on the alignment plate and slide off
fence.
"DOUBLE" BISCUITS
The alignment plate may also be used as a spacer to produce a groove that
is wide enough to accept two biscuits. After cutting a groove (or a group of
grooves) in the normal fashion, install the alignment plate and repeat the cuts.
This will double the width of each groove so that two biscuits can be installed in
each groove.
DUST PORT
The tool is equipped with a dust port (A)
Fig. 17. A large volume of sawdust and chips
will be exhausted from this port during tool
operation. A dust bag (B) Fig. 18 and a dust/
chip deflector nozzle (C) Fig. 17 are furnished.
A standard 1" vacuum hose can be connected
to the dust port to facilitate dust collection.
D o n o t o p e r a t e t h e
tool without a dust/
chip deflector nozzle and dust bag, or a
vacuum hose, attached to the dust port.
Fig. 15
Fig. 17
11
Fig. 16
5 / " (to
32
C
A