Porter-Cable Model 548 - Manual (Page 9)

9
FOREWORD
Model 548 Bayonet Saw is designed for cutting materials of the following
MAXIMUM thickness: Wood 2
1 /
2
", Aluminum 3 /
4
", Steel 1 /
4
".
SELECTING THE BLADE
To obtain best results with your Porter-Cable bayonet saw, it is important
that you use the right blade for the job. You will not only get better
performance, but your blades will last longer and a smoother cut will result.
NOTE: This tool is shipped completely assembled. No assembly time or
tools are required.
INSTALLING THE BLADE
DISCONNECT TOOL FROM POWER SOURCE.
The blade screw and nut lock the blade in the holder. The nut has a recess
on one side and the blade screw has a shoulder that fits within this recess.
NOTE: To avoid pinching and breakage of the blade make sure the recess in
the nut faces the screw head and the shoulder on the screw projects slightly
into this recess before installing the blade. Insert the blade into the blade
holder and over the screw, see Fig. 1. Use the wrench furnished with your
saw and apply only enough torque to firmly hold the blade.
NOTE: Do not over tighten as damage to the screw or nut may result.
TO START AND STOP SAW
1. Make sure power circuit voltage is the same as shown on the
specification plate on the saw. Connect saw to power circuit.
2. Squeeze switch trigger (A) Fig. 2 to start motor. Release trigger to stop
motor. This saw has a variable speed switch, as the switch trigger is
squeezed, the speed of the saw blade increases.
3. Lock Button – A lock button (B) Fig. 2, is provided to keep the saw
running at the fastest speed without holding the switch trigger “ON”. To
lock the switch trigger on, squeeze the trigger as far as it will go and
push in the lock button and release trigger.
FUNCTIONAL DESCRIPTION
ASSEMBLY
Fig.` 1
OPERATION