Harbor Freight Tools Nail Gun 04041 User Manual

®
FRAMING NAILER  
21 DEGREE ANGLED / 10 GAUGE  
Model 04041  
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, please call 1-800-444-3353.  
Revised Manual 01/04, 05/04, 09/04  
 
8.  
9.  
Use eye and ear protection. Always wear ANSI approved impact safety  
goggles and appropriate hearing protection. Wear a full face shield if you are  
producing metal filings or wood chips. Wear an ANSI approved dust mask or  
respirator when working around metal, wood, and chemical dusts and mists.  
Other people in the work area must also wear ANSI approved impact safety  
goggles.  
Maintain tools with care. Keep tools clean for better and safer performance. Follow  
instructions for lubricating and changing accessories. Inspect tool cords and air hoses  
periodically and, if damaged, have them repaired by an authorized technician. The  
handle must be kept clean, dry, and free from oil and grease at all times. Do not  
operate a tool if any portion of the tool’s operating controls are inoperable, discon-  
nected, altered or not working properly.  
10. Disconnect Air Hose and release any built-up air pressure. Never service the  
Nailer, clear jams, or disassemble with the air hose attached. Always release any  
built-up air even after disconnecting hose. Disconnect the Nailer when not in use.  
11. Remove adjusting keys and wrenches. Check that keys and adjusting wrenches  
are removed from the tool or machine work surface before attaching to an air source.  
12. Avoid unintentional starting. Be sure the trigger is in the Off position when not in  
use and before plugging in.Do not carry any tool with your finger on the trigger, whether  
it is attached to an air source or not. Do not point the tool towards yourself or anyone  
whether it contains fasteners or not.  
13. Stay alert. Watch what you are doing, use common sense. Do not operate any tool  
when you are tired.  
14. Check for damaged parts. Before using any tool, any part that appears damaged  
should be carefully checked to determine that it will operate properly and perform its  
intended function.Check for alignment and binding of moving parts;any broken parts  
or mounting fixtures; and any other condition that may affect proper operation. Any  
part that is damaged should be properly repaired or replaced by a qualified technician.  
Do not use the tool if the trigger does not operate properly.  
15. Guard against electric shock. Prevent body contact with grounded surfaces such  
as pipes, radiators, ranges, and refrigerator enclosures.  
16. Replacement parts and accessories. This product is to be repaired and serviced  
only by a qualified technician. When this product is serviced, only identical  
replacement parts should be used. Use of any other parts will void the warranty. Only  
use accessories intended for use with this tool. Approved accessories are available  
from Harbor Freight Tools.  
17. Do not operate tool if under the influence of alcohol or drugs. Read warning  
labels if taking prescription medicine to determine if your judgement or reflexes are  
impaired while taking drugs. If there is any doubt, do not operate the tool.  
REV 01/04  
SKU 04041  
For Technical Questions, Please Call 1-800-444-3353  
Page 3  
 
18. Use proper size and type extension cord. If an extension cord is required, it must  
be of the proper size and type to supply the correct current to the compressor without  
heating up. Otherwise, the extension cord could melt and catch fire, or cause electri-  
cal damage to the tool. Check your air compressor’s manual for the appropriate size  
cord. It is also possible that the use of an extension cord may cause your circuit  
panel fuse to break. If this happens, either use the compres-  
breaker to trip or your  
sor without an extension cord or find a larger amperage circuit to use.  
19. Maintenance. The maintenance outlined in the maintenance section should be  
performed regularly. For your safety, this product should be serviced or repaired  
regularly only by a qualified technician.  
20. Compressed air only. Never use combustible gas as a power source.  
21.  
Do not load nails with the trigger or safety depressed. Unintentional  
firing may occur. Do not load nails when the air hose is connected to the tool.  
Always assume that the tool contains fasteners.  
22. Disconnect air supply before loading Nailer. Before reloading (or making any  
adjustments to) the Nailer make sure that the compressed air is disconnected.  
23. Fire nails into an appropriate work surface only. Do not attempt to fire nails into  
surfaces too hard to penetrate. Do not drive nails on top of other nails, or at too steep  
of an angle. Nails can ricochet causing personal injury. Never fire the Nailer into the  
air, or point it toward yourself or another person. Always wear ANSI approved safety  
goggles during use, maintenance, and reloading.  
24. Do not fire nails too close to the edge of a workpiece. They may split the workpiece  
and fly free, causing personal injury.  
25. Take caution as some woods contain preservatives such as copper chromium  
arsenate (CCA) which can be toxic. When or nailing these materials extra care  
should be taken to avoid inhalation and minimize skin contact.  
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other  
construction activities, contain chemicals known [to the State of California] to  
cause cancer, birth defects or other reproductive harm.  
Some examples 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  
(California Health & Safety Code 25249.5, et seq. )  
26. Stay within air pressure capacity. Never operate the Nailer above 120 PSI.  
27. Hold tool away from head and body. During operation the Nailer may kick back  
causing injury.  
SKU 04041  
For Technical Questions, Please Call 1-800-444-3353  
Page 4  
 
28. Transport Nailer safely. Always disconnect air supply when moving the tool in the  
workplace. Carry the tool by the handle and avoid contact with the trigger.  
Note: Performance of the compressor (if powered by line voltage) may vary depending on  
variations in local line voltage. Extension cord usage may also affect tool performance.  
Warning: The warnings, cautions, and instructions discussed in this instruction  
manual cannot cover all possible conditions and situations that may occur. It must  
be understood by the operator that common sense and caution are factors which  
cannot be built into this product, but must be supplied by the operator.  
UNPACKING  
When unpacking, check to make sure all the parts shown on the Parts List on page 11  
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.  
OPERATION  
1/4”-18 NPT  
FIGURE A  
For best service you should incorporate an oiler, regulator, and inline filter, as shown  
in the Figure A above. Hoses, couplers, oilers, regulators, and filters are all available  
at Harbor FreightTools.  
1.  
You will need to prepare a 1/4” air connector (sold separately) to connect to the air  
inlet on the Nailer. First, wrap the 1/4” air connector (not included) with pipe thread  
seal tape before connecting to a 3/8” ID Air Source Hose (not included). Connect the  
Air Source Hose to the Air Plug (79).  
Note: If you are not using an automatic oiler system, before operation, add a few drops of  
PneumaticTool Oil to the airline connection. Add a few drops more after each hour of  
continual use.  
2.  
Set the air pressure on your compressor to 70 - 125 PSI. Do not exceed the maximum  
air pressure of 125 PSI.  
3.  
Check the air connection for leaks.  
Note: The amount of air pressure effects how deep the nails will be driven. It is  
suggested that you experiment on scrap material.  
4.  
Check the air connection for leaks and disconnect the Nailer.  
REV 11/06  
SKU 04041  
For Technical Questions, Please Call 1-800-444-3353  
Page 5  
 
TestingThe Single Sequential SafetyTrip Mechanism  
Warning: Even though the nailer should be empty during this procedure, ALWAYS  
point the Nailer at a piece of scrap wood when testing.  
1.  
The Nailer should not fire if the nose is not depressed against the workpiece. This  
tool has a single sequential safety trip mechanism, which is designed to prevent  
inadvertent firing. The tool will only fire if the Safety (38) is resting on the workpiece  
prior to pulling the Trigger (44).  
2.  
3.  
4.  
Make sure the tool is disconnected from the air supply.  
Empty the magazine of nails or staples.  
Check that the Trigger (44) and the Safety (38) on the nose of the tool, move freely,  
without sticking.  
5.  
6.  
Connect the air supply to the tool at the Air Plug (79) and set at the recommended 70-  
125 PSI, and not over the maximum 125 PSI.  
Test the tool by depressing the Safety (38) on the nose of the tool against the workpiece  
without pulling theTrigger (44). The tool must not cycle (fire). If it cycles (fires), stop  
immediately and take the tool to a qualified service technician for repair.  
7.  
8.  
Hold the tool away, or off of the workpiece. The Safety (38) or nose of the tool should  
return to its original position. Squeeze the Trigger (44). The tool should not cycle  
(fire). If it cycles (fires), stop immediately and take the tool to a qualified service  
technician.  
Depress the Safety (38) against the workpiece and squeeze the Trigger (44). The  
tool must cycle (fire) once only. Release the trigger and squeeze it again. The tool  
must cycle (fire) again only once. With the Trigger held, carefully lift the nailer and  
press it against the workpiece again. The tool must not cycle (fire). If it fails to act in  
the manner explained in bold, have it repaired by a qualified service technician.  
Loading Nails  
ALWAYS WEAR ANSI APPROVED IMPACT SAFETY GOGGLES WHEN  
RELOADING OR DOING ANY OTHER MAINTENANCE ONTHISTOOL. Other  
people in the work area must also wear ANSI approved impact safety goggles.  
Warning! Make sure the Nailer is not attached to the air hose whenever loading the  
tool.  
1.  
CAUTION: Make sure to keep the Framing Nailer pointed away from you  
and others at all times. Always disconnect the Framing Nailer from its air  
supply before loading nails. Do not load nails with theTrigger (part #44), or  
Bracket B (part #35), or Safety (part #38) depressed. (See Figure B)  
2.  
Pull the Feeder Shoe (part #52) all the way to the rear, until it latches.  
(See Figure B.)  
REV 11/06  
SKU 04041  
For Technical Questions, Please Call 1-800-444-3353  
Page 6  
 
Loading Nails (continued)  
3.  
4.  
Orient a strip of nails with the points down, and drop the strip of nails into the  
Magazine (part #71). (See Figure C.)  
Slide the strip of nails forward in the Magazine (part #71). NOTE: The Magazine  
will hold 60, 10 gauge nails.  
(See Figure C.)  
5.  
Unlatch the Feeder Shoe (part #52), and allow the Feeder Shoe to slide forward  
against the strip of nails. (See Figure C.)  
OPERATION  
NOTE: For additional references to the parts listed below, refer to the Assembly  
Diagram on page 11.  
1.  
2.  
Adjust the Exhaust Cover (4) to direct exhaust as desired.  
To fire a nail, place the nose of the Nailer on the workpiece. The Nailer should not  
fire if the Safety (38) is not depressed. Once the Safety is depressed, gently  
and briefly squeeze theTrigger once to fire one nail. Release theTrigger. Do  
not fire repeatedly; nails could bounce off on one another, damaging the  
workpeice or causing personal injury.  
3.  
4.  
With the nose of the Nailer on the workpiece, squeeze theTrigger again to  
fire another nail. Continue firing nails as needed.  
When the work is completed, disconnect the air supply and remove the nails from  
the nailer.  
REV 01/04  
SKU 04041  
For Technical Questions, Please Call 1-800-444-3353  
Page 7  
 
EXHAUST COVER (#4)  
NAILS  
(10 GAUGE)  
(2-3/16”TO 3-1/2LONG)  
NOSE (#29)  
FEEDER SHOE  
(#52)  
QUICK COUPLER &  
AIR SUPPLY HOSE  
(NOT INCLUDED)  
TRIGGER  
(#44)  
BRACKET A  
(#35)  
NOSE (#29)  
SAFETY (38)  
FIGURE B  
To Adjust The Depth To Which A Nail Is Driven  
1.  
2.  
The depth to which a nail is driven is controlled by the Safety (part #38). (See  
Figures B and C).  
To adjust the depth of drive, loosen the Screw (part #37). Slide Safety (part #38)  
up or down to the desired position. Then, re-tighten the Screw. Note: Sliding  
Safety (38) upward increases the depth of drive. Sliding Safety downward de-  
creases the depth of drive. (See Figure C).  
3.  
Test fire a nail, and check its depth of drive. Repeat Step #2 as necessary to  
achieve the desired depth of drive. (See Figure C).  
REV 01/04  
SKU 04041  
For Technical Questions, Please Call 1-800-444-3353  
Page 8  
 
SCREW (#37)  
SAFETY  
(#38)  
RUBBER COVER (39)  
FIGURE C  
Anytime any maintenance or repairs are done (including clearing jams), FIRST:  
1.  
2.  
3.  
Disconnect the Nailer from the air hose.  
Empty the Magazine (71) completely.  
Attempt to fire the Nailer into a piece of scrap wood to ensure that it is disconnected and is  
incapable of firing any brads.  
4.  
Always leave the Magazine (71) open during maintenance. The Magazine is spring-  
loaded and may cause parts or a nail to fly out of the Nailer.  
Clearing Jams  
1.  
Disconnect tool from air hose. Always fire the trigger repeatedly to make sure all of  
the air is expended from the Nailer.  
2.  
3.  
If a nail is jammed in the discharge area, simply remove it with pliers.  
If a nail is jammed in the magazine, pull the Feeder Shoe (#52) all the way back to  
the engaged position. Using a screwdriver, attempt to release the jammed nail by  
probing either or all of the openings in the magazine (see Figure D ) to release the  
nail. Pull out the jammed nail and the remainder of the nail strip that is still in the  
magazine. Dispose of the remaining nail strip; it may be bent or damaged in some  
other way. Reload the magazine with a new nail strip. Pull back on the Feeder  
Shoe (#52) and with your other hand, pull the tab down on the Lock (#67), and  
guide the Feeder Shoe (#52) back into position. If you are unable to clear the nail  
jam using the method prescribed above, the tool should be taken to a qualified  
service technician for proper servicing.  
REV 01/04  
SKU 04041  
For Technical Questions, Please Call 1-800-444-3353  
Page 9  
 
FIGURE D  
Probe in these areas with a  
screwdriver to release jammed nails.  
Anytime any maintenance or repairs are done (including clearing jams), FIRST:  
1.  
2.  
3.  
Disconnect the Nailer from the air hose.  
Empty the Magazine (71) completely.  
Attempt to fire the Nailer into a piece of scrap wood to ensure that it is disconnected and is  
incapable of firing any brads.  
4.  
Always leave the Magazine (71) open during maintenance. The Magazine is spring-  
loaded and may cause parts or a nail to fly out of the Nailer.  
INSPECTION, MAINTENANCE, AND CLEANING  
1.  
2.  
CAUTION: Always disconnect the Framing Nailer from its compressed air supply  
source before performing any inspection, maintenance, or cleaning.  
BEFORE EACH USE, inspect the general condition of the Framing Nailer.  
Check for loose screws, misalignment or binding of moving parts, jammed nails,  
cracked or broken parts, damaged air supply hose, and any other condition that  
may affect the safe operation of this tool. If abnormal noise or vibration occurs,  
immediately disconnect the Framing Nailer from its compressed air supply  
source and have the problem corrected before further use.  
Do not use damaged equipment.  
3.  
PERIODICALLY, use a premium quality, lightweight oil to lubricate all moving  
parts.  
4.  
5.  
When necessary, wipe with a damp cloth, using a mild detergent or mild solvent.  
When storing, keep the Framing Nailer in its Carrying Case (part #80) or covered  
with a clean cloth.  
REV 01/04  
SKU 04041  
For Technical Questions, Please Call 1-800-444-3353  
Page 10  
 
SKU 04041  
For Technical Questions, Please Call 1-800-444-3353  
Page 11  
 
PLEASE READTHE FOLLOWING CAREFULLY  
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDEDTHE PARTS LIST AND ASSEMBLY  
DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR  
DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER  
THAT HE OR SHE IS QUALIFIEDTO MAKE ANY REPAIRSTOTHE PRODUCT, ORTHAT HE OR SHE  
IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTUER AND/  
OR DISTRIBUTOR EXPRESSLY STATESTHAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD  
BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE  
BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE  
ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER  
INSTALLATION OF REPLACEMENT PARTSTHERETO.  
SKU 04041  
For Technical Questions, Please Call 1-800-444-3353  
Page 12  
 

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