ELECTRIC NAILER / STAPLER
MODEL 91494
ASSEMBLY AND OPERATING INSTRUCTIONS
3491 Mission Oaks Blvd., Camarillo, CA 93011
TO PREVENT SERIOUS INJURY,
READ AND UNDERSTAND ALL WARNINGS
AND INSTRUCTIONS BEFORE USE.
©
®
Copyright 2004 by Harbor Freight Tools . All rights reserved. No portion
of this manual or any artwork contained herein may be reproduced in any shape
or form without the express written consent of Harbor Freight Tools.
For technical questions and replacement parts, please call 1-800-444-3353
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ELECTRICAL SAFETY
4.
Grounded tools must be plugged into an outlet properly installed and
grounded in accordance with all codes and ordinances. Never remove the
grounding prong or modify the plug in any way. Do not use any adapter
plugs. Check with a qualified electrician if you are in doubt as to whether
the outlet is properly grounded. If the tools should electrically malfunction or
break down, grounding provides a low resistance path to carry electricity away
from the user.
5.
6.
Double insulated tools are equipped with a polarized plug (one blade is
wider than the other). This plug will fit in a polarized outlet only one way. If
the plug does not fit fully in the outlet, reverse the plug. If it still does not
fit, contact a qualified electrician to install a polarized outlet. Do not
change the plug in any way. Double insulation
eliminates the need for the
three wire grounded power cord and grounded power supply system.
Avoid body contact with grounded surfaces such as pipes, radiators,
ranges, and refrigerators. There is an increased risk of electric shock if your
body is grounded.
7.
8.
Do not expose power tools to rain or wet conditions. Water entering a power
tool will increase the risk of electric shock.
Do not abuse the Power Cord. Never use the Power Cord to carry the tools
or pull the Plug from an outlet. Keep the Power Cord away from heat, oil,
sharp edges, or moving parts. Replace damaged Power Cords immedi-
ately. Damaged Power Cords increase the risk of electric shock.
9.
When operating a power tool outside, use an outdoor extension cord
marked “W-A” or “W”. These extension cords are rated for outdoor use, and
reduce the risk of electric shock.
PERSONAL SAFETY
10.
11.
Stay alert. Watch what you are doing, and use common sense when oper-
ating a power tool. Do not use a power tool while tired or under the influ-
ence of drugs, alcohol, or medication. A moment of inattention while operat-
ing power tools may result in serious personal injury.
Dress properly. Do not wear loose clothing or jewelry. Contain long hair.
Keep your hair, clothing, and gloves away from moving parts. Loose
clothes, jewelry, or long hair can be caught in moving parts.
SKU 91494
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12.
13.
14.
15.
Avoid accidental starting. Be sure theTrigger is released before plugging
in. Carrying power tools with your finger on the Trigger, or plugging in power
tools with the Trigger on, invites accidents.
Remove adjusting keys or wrenches before plugging the tool in. A wrench
or a key that is left attached to a moving part of the power tool may result in
personal injury.
Do not overreach. Keep proper footing and balance at all times. Proper
footing and balance enables better control of the power tool in unexpected
situations.
Use safety equipment. Always wear eye protection. Dust mask, non-
skid safety shoes, hard hat, or hearing protection must be used for appro-
priate conditions. Always wear work gloves and the included ANSI ap-
proved safety goggles.
TOOL USE AND CARE
16.
Use clamps (not included) or other practical ways to secure and support
the workpiece to a stable platform. Holding the work by hand or against your
body is unstable and may lead to loss of control.
17.
18.
Do not force the tool. Use the correct tool for your application. The correct
tool will do the job better and safer at the rate for which it is designed.
Do not use tool if switch does not turn it on or off. Any tool that cannot be
controlled with the switch is dangerous and must be repaired. Any tool that can-
not be controlled with the Trigger is dangerous and must be repaired or replaced.
19.
Disconnect the Power Cord Plug from the power source before making any
adjustments, changing accessories, or storing the tool. Such preventive
safety measures reduce the risk of starting the tool accidentally.
20.
21.
Store idle tools out of reach of children and other untrained persons. Tools
are dangerous in the hands of untrained users.
Maintain tools with care. Keep tools clean. Properly maintained tools are
less likely to bind and are easier to control. Do not use a damaged tool. Tag
damaged tools “Do not use” until repaired.
22.
Check for misalignment or binding of moving parts, breakage of parts, and
any other condition that may affect the tool’s operation. If damaged, have
the tool serviced before using. Many accidents are caused by poorly main-
tained tools.
REV 07/04
SKU 91494
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23.
Use only accessories that are recommended by the manufacturer for your
model. Accessories that may be suitable for one tool may become hazardous
when used on another tool.
SERVICE
24.
25.
Tool service must be performed only by qualified repair personnel. Service
or maintenance performed by unqualified personnel could result in a risk of injury.
When servicing a tool, use only identical replacement parts. Follow
instructions in the “Inspection, Maintenance, And Cleaning”section of this
manual. Use of unauthorized parts or failure to follow maintenance instructions
may create a risk of electric shock or injury.
SPECIFIC SAFETY RULES
1.
2.
Hold tool by insulated gripping surfaces when performing an operation
where the cutting tool may contact hidden wiring or its own cord. Contact
with a “live” wire will make exposed metal parts of the tool “live” and shock the
operator.
Maintain labels and nameplates on the Nailer / Stapler. These carry impor-
tant information. If unreadable or missing, contact Harbor Freight Tools for a
replacement.
3.
4.
5.
Avoid unintentional starting. Make sure you are prepared to begin work
before turning on the Nailer / Stapler.
Do not force the Nailer / Stapler. This tool will do the work better and safer at
the speed and capacity for which it was designed.
Never leave the Nailer / Stapler unattended when it is plugged into an
electrical outlet. Turn off the tool, and unplug it from its electrical outlet before
leaving.
6.
Always keep your hands away from the workpiece when firing Brad
Nails and Staples. This Nailer / Stapler has enough power to force
Brad Nails or Staples through skin, causing serious injury.
REV 07/04
SKU 91494
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7.
8.
Always unplug the Nailer / Stapler from its electrical outlet before
performing and inspection, maintenance, or cleaning procedures.
Do not load Brad Nails or Staples with the trigger or safety depressed or
when plugged into the power outlet. Unintentional firing may occur.
9.
Fire fasteners into an appropriate work surface only. Do not attempt to fire
fasteners into surfaces too hard to penetrate. Do not drive fasteners on top of
other fasteners, or at too steep of an angle. Fasteners can ricochet causing
personal injury.
10.
11.
Do not fire fasteners too close to the edge of a workpiece. They may split
the workpiece and fly free, causing personal injury.
WARNING! Some dust created by power sanding, sawing, grinding, drilling,
and other construction activities, contain chemicals known (to the State of Cali-
fornia) to cause cancer, birth defects or other reproductive harm. Some ex-
amples of these chemicals are: lead from lead-based paints, crystalline silica
from bricks and cement or other masonry products, arsenic and chromium from
chemically treated lumber. Your risk from these exposures varies, depending on
how often you do this type of work. To reduce your exposure to these chemicals:
work in a well ventilated area, and work with approved safety equipment, such as
those dust masks that are specially designed to filter out microscopic particles.
(California Health & Safety Code 25249.5, et seq.)
12.
WARNING! People with pacemakers should consult their physician(s)
before using this product. Electromagnetic fields in close proximity to a heart
pacemaker could cause interference to or failure of the pacemaker.
In addition, people with pacemakers should adhere to the following:
- Avoid operating power tools alone.
- Don’t use a power tool with the power switch locked on.
- If powered via a power cord be certain that the tool is properly grounded.A ground
fault interrupt (GFCI) system is also a good precaution. This inexpensive device is
a good safety measure because it prevents a sustained electrical shock.
- Properly maintain and inspect all tools before use to avoid electrical shock.
SKU 91494
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GROUNDING
WARNING!
Improperly connecting the grounding wire can result in the risk of electric
shock. Check with a qualified electrician if you are in doubt as to whether the
outlet is properly grounded. Do not modify the power cord plug provided with
the tool. Never remove the grounding prong from the plug. Do not use the
tool if the power cord or plug is damaged. If damaged, have it repaired by
a service facility before use. If the plug will not fit the outlet, have a proper
outlet installed by a qualified electrician.
GROUNDED TOOLS: TOOLS WITH THREE PRONG PLUGS
1.
Tools marked with “Grounding Required” have a three wire cord and three prong
grounding plug. The plug must be connected to a properly grounded outlet. If
the tool should electrically malfunction or break down, grounding provides a low
resistance path to carry electricity away from the user, reducing the risk of elec-
tric shock. (See Figure A.)
2.
3.
The grounding prong in the plug is connected through the green wire inside the
cord to the grounding system in the tool. The green wire in the cord must be the
only wire connected to the tool’s grounding system and must never be attached
to an electrically “live” terminal. (See Figure A.)
Your tool must be plugged into an appropriate outlet, properly installed and
grounded in accordance with all codes and ordinances. The plug and outlet
should look like those in the following illustration. (See Figure A.)
FIGURE A
SKU 91494
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DOUBLE INSULATED TOOLS: TOOLS WITH TWO PRONG PLUGS
4.
5.
Tools marked “Double Insulated” do not require grounding. They have a special
double insulation system which satisfies OSHA requirements and complies with
the applicable standards of Underwriters Laboratories, Inc., the Canadian
Standard Association, and the National Electrical Code. (See Figure B.)
Double insulated tools may be used in either of the 120 volt outlets shown in the
following illustration. (See Figure B.)
FIGURE B
EXTENSION CORDS
1.
2.
Grounded tools require a three wire extension cord. Double Insulated tools
can use either a two or three wire extension cord.
As the distance from the supply outlet increases, you must use a heavier gauge
extension cord. Using extension cords with inadequately sized wire causes a
serious drop in voltage, resulting in loss of power and possible tool damage.
(See Figure C, next page.)
3.
4.
5.
The smaller the gauge number of the wire, the greater the capacity of the cord.
For example, a 14 gauge cord can carry a higher current than a 16 gauge cord.
(See Figure C.)
When using more than one extension cord to make up the total length, make
sure each cord contains at least the minimum wire size required.
(See Figure C.)
If you are using one extension cord for more than one tool, add the nameplate
amperes and use the sum to determine the required minimum cord size.
(See Figure C.)
SKU 91494
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6.
7.
If you are using an extension cord outdoors, make sure it is marked with the
suffix “W-A” (“W” in Canada) to indicate it is acceptable for outdoor use.
Make sure your extension cord is properly wired and in good electrical condition.
Always replace a damaged extension cord or have it repaired by a qualified
electrician before using it.
8.
Protect your extension cords from sharp objects, excessive heat, and damp or
wet areas.
RECOMMENDED MINIMUM WIRE GAUGE FOR EXTENSION CORDS*
(120 VOLT)
NAMEPLATE
AMPERES
(At Full Load)
EXTENSION CORD LENGTH
25 FEET
50 FEET
75 FEET
100 FEET
150 FEET
0 - 2.0
18
18
18
18
18
14
12
18
18
18
16
14
12
10
16
16
16
14
12
10
-
16
14
14
12
10
-
16
14
12
12
-
2.1 - 3.4
3.5 - 5.0
5.1 - 7.0
7.1 - 12.0
12.1 - 16.0
16.1 - 20.0
-
-
-
*Based on limiting the line voltage drop
to five volts at 150% of the rated amperes.
FIGURE C
SYMBOLOGY
Double Insulated
Canadian Standards
Association
Underwriters
Laboratories, Inc.
Volts Alternating Current
V ~
Amperes
A
n
No Load Revolutions
per Minute (RPM)
o
xxxx/min.
SKU 91494
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UNPACKING
When unpacking, check to make sure all the parts shown on the Parts List on page 13
are included. If any parts are missing or broken, please call Harbor Freight Tools at the
number shown on the cover of this manual as soon as possible.
ASSEMBLY AND OPERATING INSTRUCTIONS
NOTE: For additional information regarding the parts listed in the following pages, refer
to the Assembly Diagram on page 14.
Apply Pressure Here
FIGURE 1
Power Cord (7)
Trigger (13)
Lever (29)
Fastener Window
Nose (19)
Magazine (22)
Safety (21)
Warning: This Nailer / Stapler is not suited for nailing or stapling into concrete,
masonry, bricks, or metal.
Warning! Do not fire if Brad Nails or Staples are jammed in the Nose (19) section.
Unplug the unit and follow the “Removing Jammed Staples or Brad Nails” on page 12.
SKU 91494
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ASSEMBLY AND OPERATING INSTRUCTIONS (cont.)
Warning! This Nailer has a Sequential Trip safety mechanism.With the nose of the
Nailer contacting a surface, the unit will fire only once when the trigger is pulled.
Testing the Sequential Trip Safety Mechanism
1.
2.
3.
4.
The Nailer should not fire if the Safety (21) is not depressed against the workpiece.
Make sure the tool is disconnected from the power supply.
Empty the Magazine (22) of nails.
Check that the Trigger (13) and the Safety (21) of the tool, move freely, without
sticking.
5.
6.
Plug the tool into the power outlet.
Test the tool by depressing the Safety (21) of the tool against the workpiece without
pulling the Trigger (13). The tool must not cycle (fire). If it cycles (fires), stop imme-
diately and take the tool to an qualified service technician for repair.
Hold the tool away or off of the workpiece. The Safety (21) of the tool should return
to its original position. Squeeze theTrigger (13). The tool should not cycle (fire). If
it cycles (fires), stop immediately and take the tool to an authorized service techni-
cian.
Depress the Safety (21) of the tool against the workpiece and squeeze the Trigger
(13). The tool must cycle (fire) once only. If it fails to cycle (fire) or fires more than
once, take it to an authorized service technician.
7.
8.
Warning! Disconnect the Nailer from the power outlet whenever loading it.
Loading Brad Nails and Staples - See FIGURES 2 and 3 below.
1.
2.
Depress the Lever (29) and extend the Inner Magazine (24) all the way out .
When loading Brad Nails, make sure you insert the pins of the nails on the side of
the Magazine (22) with the groove in it. The Brad Nails should fit into the groove.
When loading staples, insert them crown up, into the Magazine (22).
3.
Slide the extended Inner Magazine (24) back until the Lever (29) clicks into place.
Do not force the Inner Magazine (24) or you may damage the tool.
FIGURE 2
FIGURE 3
Lever (29)
Depth Adjustment
Knob
Lever (29)
Inner Magazine (24)
Insert staples
here, crown up
REV 10/05
SKU 91494
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OPERATING INSTRUCTIONS
When the unit is loaded with fasteners and you are ready to begin,
plug the Nailer / Stapler Power Cord (7) into a power outlet.
1.
Hold the tool with both hands, so that the Nose (19) is flat against
FIGURE 4
the workpiece, making sure that the Safety (21) is also firmly
against the workpiece.
2.
3.
Gently squeeze the Trigger (13) to fire the tool.
If you need a deeper driving depth, adjust the Depth Adjustment
Knob. See FIGURE 3 on page 11 and FIGURE 4 to the right.
Note: Practice depth adjustment on scrap material first.
4.
If more depth is needed, and you are nailing or stapling into a
hard surface, you may apply pressure on the top of the unit. See
FIGURE 1 on page 10. On soft surfaces do not apply excessive
pressure or the Brad Nail or Staple may penetrate the workpiece
too deeply.
Note: Each time you fire the Nailer / Staple Gun, the Safety (21) must
be pressed firmly against the workpiece.
Removing Jammed Staples or Brad Nails
1.
First, unplug the Nailer / Stapler. If a nail is jammed in the discharge area, simply
remove it with pliers.
2.
If a nail is jammed in the Magazine (22), depress the Lever (29) and extend the
Inner Magazine (24) all the way out.See FIGURES 2 and 3. Use a flat screwdriver
and/or needle nose pliers to free the Brad Nail or Staple.
INSPECTION, MAINTENANCE, AND CLEANING
1.
2.
WARNING! Make sure that the tool is unplugged from its electrical outlet
before performing any inspection, maintenance, or cleaning procedures.
BEFORE EACH USE, inspect the general condition of the Nailer / Stapler.
Check for loose screws, misalignment or binding of moving parts, cracked or
broken parts, damaged electrical wiring, and any other condition that may affect
its safe operation. If abnormal noise or vibration occurs, have the problem cor-
rected before further use. Do not use damaged equipment.
3.
4.
5.
Wipe tool clean with a lint free cloth and inspect it for damage. Do not use the
tool if you find damage. Have it repaired by an authorized service technician.
Keep all screws tight. Loose screws may damage the tool and cause personal
injury.
Make sure the Nose (19) is clear of all dirt or debris.
SKU 91494
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PARTS LIST
Part No.
1
Description
Stop
2
3
Striking Pad
Blade
4
Spring
5
Coil
6
Buffer
7
8
9
Power Cord
Wire Cover
Rod
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Control Unit
Switch A
Spring
Trigger
Body A
Body B
Switch B
Hex Bolt (2)
Nose Cover
Nose
Spacer
Safety
Magazine
Feeder Shoe
Inner Magazine
Label
Brace
Magazine Back
Spring
Lever
Spring
Support
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND
ASSEMBLY DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANU-
FACTURER OR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND
TO THE BUYERTHAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR
THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE
MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATESTHAT ALL REPAIRS AND PARTS
REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSEDTECHNICIANS, AND
NOT BYTHE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR
HER REPAIRSTO THE ORIGINAL PRODUCT OR REPLACEMENT PARTSTHERETO, OR ARISING
OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.
SKU 91494
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ASSEMBLY DIAGRAM
NOTE: Some parts are listed and shown for illustration purposes only, and are not
available individually as replacement parts.
SKU 91494
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