Porter-Cable 7548 User manual

Instruction
manual
Bayonet Saws
IMPORTANT
Please make certain that the person who is to use
this equipment carefully reads and understands these
instructions before starting operations.
The Model and Serial No. plate is located on the
main housing of the tool. Record these numbers in
the spaces below and retain for future reference.
Model No_
Type -
Serial No. _
L —_ _
Part No. 693946-092

IMPORTANT SAFETY INSTRUCTIONS
WARNING: When using electric tools, basic safety precautions should
always be followed to reduce the risk of fire, electric shock and personal
injury, including the following:
READ AND FOLLOW ALL INSTRUCTIONS.
There are certain applications for which this tool was designed. Porter-
Cable strongly recommends that this tool NOT be modified and/or used
for any application other than for which it was designed. If you have
any questions relative to its application DO NOT use the tool until
you have written Porter-Cable and we have advised you.
Manager of Product Engineering
Porter-Cable Corporation
4825 Highway 45 North
P.O. Box 2468
Jackson, TN 38302-2468
1. KEEP WORK AREA CLEAN. Cluttered areas and benches invite
injuries.
2. AVOID DANGEROUS ENVIRONMENT. Don’t expose power tools
to rain. Don’t use power tools in damp or wet locations. Keep area
well lit. Avoid chemical or corrosive environment. Do not use tool in
presence of flammable liquids or gases.
THIS SYMBOL DENOTES DO NOT EXPOSE TO RAIN
OR USE IN DAMP LOCATIONS
CE SIGNE EST VINDICATION DE NE PAS EXPOSER
A LA PLUIE ET NE PAS UTILISER DANS LES
EMPLACEMENTS HUMIDES
3. GUARD AGAINST ELECTRIC SHOCK. Prevent body contact with
grounded surfaces. For example: pipes, radiators, ranges, refrigerator
enclosures.
4. KEEP CHILDREN AWAY. Do not let visitors contact tool or
extension cord. All visitors should be kept away from work area.
5. STORE IDLE TOOLS. When not in use, tools should be stored
in dry, and high or locked-up place — out of the reach of children.
6. DON’T FORCE TOOL. It will do the job better and safer at the
rate for which it was intended.
7. USE RIGHT TOOL. Don’t force small tool or attachment to do
the job of a heavy duty tool. Don’t use tool for purpose not intended—
for example—do not use a circular saw for cutting tree limbs or logs.
8. DRESS PROPERLY. Do not wear loose clothing or jewelry. Loose
clothing, draw strings and jewelry can be caught in moving parts. Rubber
gloves and non-skid footwear are recommended when working. Wear
protective hair covering to contain long hair.
9. USE SAFETY GLASSES. Wear safety glasses or goggles while
operating power tools. Also face or dust mask if operation creates dust.
All persons in the area where power tools are being operated should
also wear safety glasses and face or dust mask.
10. DON’T ABUSE CORD. Never carry tool by cord or yank it to
disconnect from receptacle. Keep cord from heat, oil, and sharp edges.
o

Have damaged or worn power cord and strain reliever replaced
immediately.
11. SECURE WORK. Use clamps or a vise to hold work. It’s safer
than using your hand and it frees both hands to operate tool.
12. DON’T OVERREACH. Keep proper footing and balance at all
times.
13. MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for
better and safer performance. Follow instructions for lubricating and changing
accessories. Inspect tool cords periodically and if damaged, have repaired
by authorized service facility. Inspect extension cords periodically and
replace if damaged. Have all worn, broken or lost parts replaced immediately.
Keep handles dry, clean and free from oil and grease.
14. DISCONNECT TOOLS. When not in use, before servicing, and
when changing accessories such as blades, bits, cutters, etc.
15. REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of
checking to see that keys and adjusting wrenches are removed from
the tool before turning it on.
16. AVOID UNINTENTIONAL STARTING. Do not carry a plugged-
in tool with finger on switch. Be sure switch is off when plugging in.
Keep hands, body and clothing clear of blades, bits, cutters, etc. when
plugging in the tool.
17. OUTDOOR USE EXTENSION CORDS. When tool is used
outdoors, use only extension cords marked "Suitable for use with outdoor
appliances - store indoors when not in use.”
18. STAY ALERT. Watch what you are doing. Use common sense.
Do not operate tool when you are tired or while under the influence
of medication, alcohol or drugs.
19. CHECK DAMAGED PARTS. Before further use of the tool, a guard
or other part that is damaged should be carefully checked to determine
that it will operate properly and perform its intended function. Check
for alignment of moving parts, binding of moving parts, breakage of parts,
mounting, and any other conditions that may affect its operation. A guard
or other part that is damaged should be properly repaired or replaced
by an authorized service center unless otherwise indicated elsewhere
in this instruction manual. Have defective switches replaced by authorized
CSlflSf . Do not USO tool If switch does not turn it on and oft.
20. WEAR EAR PROTECTION to safeguard against possible hearing
loss.
SAVE THESE INSTRUCTIONS
ADDITIONAL SAFETY RULES FOR PORTABLE BAYONET SAWS
1. KEEP BLADES SHARP.
2. KEEP HANDS AWAY FROM CUTTING AREA. When sawing never
reach underneath or behind the material being cut for any reasons.
3. WHEN YOU HAVE FINISHED A CUT be careful not to come into
contact with the blade. Turn off the motor immediately.

4. WARNING: EXERCISE EXTREME CAUTION WHEN BLIND
CUTTING TO BE CERTAIN THAT THERE ARE NOT FOREIGN
OBJECTS SUCH AS ELECTRICAL WIRE, CONDUIT, PLUMBING
PIPES, ETC., THAT MAY COME INTO CONTACT WITH THE
BLADE.
REPLACEMENT PARTS
When servicing use only identical replacement parts.
MOTOR
Most Porter-Cable tools will operate on either D.C., or single phase
25 to 60 cycle A.C. current and voltage within plus or minus 5 percent
of that shown on the specification plate on the tool. Several models,
however, are designed for A.C. current only. Refer to the specifica¬
tion plate on your tool for proper voltage and current rating.
CAUTION: Do not operate your tool on a current on which the
voltage is not within correct limits. Do not operate tools rated A.C.
only on D.C. current. To do so may seriously damage the tool.
EXTENSION CORD SELECTION
If an extension cord is used, make sure the conductor size is large
enough to prevent excessive voltage drop which will cause loss of
power and possible motor damage. A table of recommended
extension cord sizes will be found below. This table is based on
limiting line voltage drop to 5 volts (10 volts for 230 volts) at 150% of
rated amperes.
If an extension cord is to be used outdoors it must be marked with the
suffix W-A following the cord type designation. For example —
SJTW-A to indicate it is acceptable for outdoor use.
RECOMMENDED EXTENSION CORD SIZES FOR USE WITH PORTABLE ELECTRIC TOOLS

OPERATING INSTRUCTIONS
FOREWORD
Model 7548 and 7648 Bayonet Saws are 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. A wide assortment of Porter-Cable blades is listed in
the back of this manual. It is strongly recommended that you obtain a
full assortment so you will always have the correct blade at hand for
any job you might choose to do.
Fig. 1
INSTALLING THE BLADE
CAUTION: Disconnect the saw from the power source.
Using the wrench furnished with your saw, loosen the blade screw
(C) Fig. 1. Insert the blade (A) Fig. 1, up into the blade clamp (B) Fig.
1, as far as it will go. While holding the blade to the front of the blade
clamp, lightly tighten blade screw (C) Fig. 1. Loosen blade screw (C)
Fig. 1,1/4 turn and pull down on the blade. The blade should not pull
out. Firmly tighten the blade screw.