Makita Nail Gun AG125 User Manual

Air Nailer  
MODEL AG090  
MODEL AG125  
I N S T R U C T I O N M A N U A L  
WARNING:  
For your personal safety, READ and UNDERSTAND before using.  
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.  
w w w. m a k i t a t o o l s . c o m  
 
READ ALL  
INSTRUCTIONS.  
For personal safety and proper operation and maintenance  
of the tool, read this instruction manual carefully before using  
the tool.  
Always wear safety glasses to protect your eyes from dust or  
nail injury. The safety glasses should conform with the  
requirements of ANSI Z87.1 - 1979.  
WARNING:  
It is an employer’s responsibility to enforce the use of  
safety eye protection equipment by the tool operators  
and by other persons in the immediate working area.  
Wear hearing protection to protect your ears against exhaust  
noise and head protection. Also wear light but not loose  
clothing. Sleeves should be buttoned or rolled up. No necktie  
should be worn.  
Rushing the job or forcing the tool is dangerous. Handle the  
tool carefully. Do not operate when under the influence of  
alcohol, drugs or the like.  
3
 
General Tool Handling Guidelines:  
1. Always assume that the tool contains fasteners.  
2. Do not point the tool toward yourself or anyone whether  
it contains fasteners or not.  
3. Do not actuate the tool unless the tool is placed firmly  
against the workpiece.  
4. Respect the tool as a working implement.  
5. No horseplay.  
6. Do not hold or carry the tool with a finger on the trigger.  
7. Do not load the tool with fasteners when any one of the  
operating controls is activated.  
8. Do not operate the tool with any power source other than  
that specified in the tool operating/safety instructions.  
An improperly functioning tool must not be used.  
Sparks sometimes fly when the tool is used. Do not use the  
tool near volatile, flammable materials such as gasoline, thin-  
ner, paint, gas, adhesives, etc.: they will ignite and explode,  
causing serious injury.  
The area should be sufficiently illuminated to assure safe  
operations. The area should be clear and litter- free. Be  
especially careful to maintain good footing and balance.  
4
 
Only those involved in the work should be in the vicinity. Chil-  
dren especially must be kept away at all times.  
There may be local regulations concerning noise which must  
be complied with by keeping noise levels within prescribed  
limits. In certain cases, shutters should be used to contain  
noise.  
Shutter  
Bang !  
Securing the trigger in the ON position is also very danger-  
ous. Never attempt to fasten the trigger.  
Do not operate a tool if any portion of the toot operating con-  
trols is inoperable, disconnected, altered, or not working  
properly.  
Trigger  
Operate the tool within the specified air pressure of 4.5 - 8.5  
kgf/cm²G (65 - 120 PSIG) for safety and longer tool life. Do  
not exceed the recommended max. operating pressure of 8.5  
kgf/cm²G (120 PSIG). The toot should not be connected to a  
source whose pressure potentially exceeds 14.0 kgf/cm²G  
(200 PSIG).  
Never use the tool with other than compressed air. If bottled  
gas (carbon dioxide, oxgen, nitrogen, hydrogen, air, etc.) or  
combustible gas (hydrogen, propane, acetylene, etc.) is used  
as a power source for this toot, the tool will explode and  
cause serious injury.  
5
 
Always check the tool for its overall condition and loose  
screws before operation. Tighten as required.  
Make sure the safety system is in working order before oper-  
ation. The tool must not operate if only the nail guide is  
pressed against the wood.  
Nail guide  
Test for possible faulty operation with nails unloaded and the  
adjuster set to the number 1.  
Trigger  
Adjuster  
Check walls, ceilings, floors, roofing and the like carefully to  
avoid possible electrical shock, gas leakage, explosions, etc.  
caused by striking live wires, conduits or gas pipes.  
Gas pipe  
Live wire  
Use only nails specified in this manual. The use of any other  
nails may cause malfunction of the tool.  
Do not permit those uninstructed to use the tool.  
6
 
Make sure no one is nearby before nailing. Never attempt to  
nail from both the inside and outside at the same time. Nails  
may rip through and /or fly off, presenting a grave danger.  
Watch your footing and maintain your balance with the tool.  
Make sure there is no one below when working in high loca-  
tions, and secure the air hose to prevent danger if there is  
sudden jerking or catching.  
On rooftops and other high locations, nail as you move for-  
ward. It is easy to lose your footing if you nail while inching  
backward. When nailing against perpendicular surface, nail  
from the top to the bottom. You can perform nailing opera-  
tions with less fatigue by doing so.  
A nail will be bent or the tool can become jammed if you mis-  
takenly nail on top of another nail or strike a knot in the wood.  
The nail may be thrown and hit someone, or the tool itself  
can react dangerously. Place the nails with care.  
Nail  
Do not leave the loaded tool or the air compressor under  
pressure for a long time out in the sun. Be sure that dust,  
sand, chips and foreign matter will not enter the tool in the  
place where you leave it setting.  
7
 
DO not point the ejection port at anyone in the vicinity. Keep  
hands and feet away from the ejection port area.  
When the air hose is connected, do not carry the tool with  
your finger on the trigger or hand it to someone in this condi-  
tion. Accidental firing can be extremely dangerous.  
Handle the tool carefully as there is high pressure inside the  
tool that can be dangerous if a crack is caused by rough han-  
dling (dropping or striking). Do not attempt to carve or  
engrave on the tool.  
Thump  
Stop nailing operations immediately if you notice something  
wrong or out of the ordinary with the tool.  
Always disconnect the air hose and remove the nail:  
1. When unattended.  
2. Before performing any maintenance or repair.  
3. Before cleaning a jam.  
4. Before moving the tool to a new location.  
8
 
Perform cleaning and maintenance right after finishing the  
job. Keep the tool in tip-top condition. Lubricate moving parts  
to prevent rusting and minimize friction related wear. Wipe off  
all dust from the parts.  
Do not operate this tool if it does not contain a legible WARN-  
ING LABEL.  
Do not modify tool without authorization from Makita.  
Ask Makita’s Factory or Authorized service center for periodi-  
cal inspection of the tool.  
To maintain product SAFETY and RELIABILITY, mainte-  
nance and repairs should be performed by Makita Authorized  
or Factory Service Centers, always using Makita replace-  
ment parts.  
SAVE THESE INSTRUCTIONS  
9
 
TOOL  
INSTALLATION  
INSTRUCTIONS  
AND USE  
Selecting compressor  
The air compressor must comply with the requirements of  
ANSI B19.3 - 1981.  
Select a compressor that has ample pressure and air output  
to assure cost-efficient operation. The graph shows the rela-  
tion between nailing frequency and compressor air output at  
a compression of 8.5 kgf/cm²G (120 PSIG). Thus, for exam-  
ple, when you drive about 10 nails 3.75 mm x 90 mm (0.148”  
x 3-1/2”) per minute, a compressor with an air output over 55  
l/minute is required. Pressure regulators must be used to  
limit air pressure to the rated pressure of the tool where air  
supply pressure exceeds the tool’s rated pressure. Failure to  
do so may result in serious injury to tool operator or persons  
in the vicinity.  
NOTE:  
Nail size indicates diameter x length.  
Selecting air hose  
Use an air hose as large and as short as possible to assure  
continuous, efficient nailing operation. With an air pressure of  
5 kgf/cm²G (70 PSIG), an air hose with an internal diameter  
of over 8.5 mm (5/16”) and a length of less than 20 m (6.6 ft.)  
is recommended when the interval between each nailing is  
0.5 seconds. Air supply hoses shall have a minimum working  
pressure rating of 10.7 kgf/cm²G (150 PSIG) or 150 percent  
of the maximum pressure produced in the system whichever  
is higher.  
CAUTION:  
Low air output of the compressor, or a long or smaller  
diameter air hose in relation to the nailing frequency may  
cause a decrease in the driving capability of the tool.  
10  
 
Lubrication  
To insure maximum performance, install an air set (oiler, reg-  
ulator, air filter) as close as possible to the tool. Adjust the  
oiler so that one drop of oil will be provided for every 20 nails.  
When an air set is not used, oil the tool with pneumatic tool  
oil by placing 2 (two) or 3 (three) drops into the air fitting. This  
should be done before and after use. For proper lubrication,  
the tool must be fired a couple of times after pneumatic tool  
oil is introduced.  
Selecting nails  
CAUTION:  
Nail guide  
D1  
Do not drive hardened steel nails or stainless steel nails  
into concrete or steel plate. If you do so, the nailer may  
be adversely affected.  
D2  
Gauge  
Always check the size of the nail head with the gauge on the  
nail guide before loading the nailer. Different size nails may  
be mixed up in the nails you purchase locally.  
Do not use nails with a head size larger than D1 or smaller  
than D2. Nails with a head size larger than D1 cannot be  
inserted into the nail guide. Nails with a head size smaller  
than D2 may move into the contact arm and cannot be  
driven.  
11  
 
Loading nailer  
CAUTION:  
Be careful not to touch the trigger when loading the nail.  
Nail head  
When loading nail into the nailer, grip the nail by the  
shank, not the tip.  
Nail shank  
Nail tip  
Hold the nail shank lightly and insert the nail head into the  
nail guide until the nail is held firmly by the magnet.  
Magnet  
Nail  
Contact arm  
Nail guide  
Adjusting depth of nailing  
CAUTION:  
Always disconnect the hose before adjusting the depth  
of nailing.  
To adjust the depth of nailing, turn the adjuster so that the  
arrow above the adjuster will point to the number indicated  
on the adjuster. The depth of nailing is the deepest when the  
arrow points to the number 1. It will become shallower as the  
arrow points to higher number. The depth can be changed in  
approx. 1.5 mm (1/16”) increments per graduation. If nails  
cannot be driven deep enough even when the arrow points to  
the number 1, increase the air pressure.  
Adjuster  
Connecting air hose  
Air fitting  
Slip the air socket of the air hose onto the air fitting on the  
nailer. Be sure that the air socket locks firmly into position  
when installed onto the air fitting. A hose coupling must be  
installed on or near the tool in such a way that the pressure  
reservoir will discharge at the time the air supply coupling is  
disconnected.  
Air socket  
12  
 
Operation  
CAUTION:  
Driving surface  
Make sure the safety system is in working order before  
operation.  
To start driving, place the tip of the nail against the driving  
surface and pull the trigger. At the start of driving, apply gen-  
tle downward pressure on the nailer in the arrow direction to  
hold the nail firmly. When the impact of the contact arm  
stops, the driving operation is over. If the nail is not driven  
deep enough, place the ejection port of the nailer over the  
nail head. Press the nailer against the driving surface firmly  
and pull the trigger to do additional driving of the nail.  
Trigger  
NOTE:  
The nailer will not operate unless you apply sufficient  
pressure to the contact arm. If this occurs, apply forward  
pressure to the nailer again while pulling the trigger to  
start operation.  
Nailing with one or two impacts  
1
Set the tip of the nail firmly  
against driving surface.  
When you need to position a nail or drive a shallow nail:  
1. Set the tip of the nail firmly against the driving surface.  
2. Pull the trigger.  
2
Pull trigger.  
3. Withdaw the nailer from the driving surface immediately  
after one or two impacts.  
3
Withdaw nailer from driving surface  
immediately after one or two impacts.  
NOTE:  
The impacts will continue as long as you keep the nailer  
pressed up against the driving surface, even if you  
release the trigger.  
Nailing in metal plate holes  
CAUTION:  
Metal plate  
Hole  
Always make sure that the tip of the nail is inserted in the  
hole in the metal plate before you start nailing.  
13  
 
Air exhaust  
Exhaust cover  
Air exhaust direction can be changed easily by rotating the  
exhaust cover. Change it when necessary.  
Jammed nailer  
CAUTION:  
Always disconnect the hose before cleaning a jam.  
Pliers  
Nail  
When the nailer becomes jammed, do as follows:  
Nail guide  
Use pliers to bend the jammed nail so that the nail head  
comes out of the nail guide. Then remove the jammed nail.  
After removing the jammed nail, make sure that the nail  
guide and the contact arm move smoothly.  
Hook  
Hook  
The hook is convenient for hanging the tool temporarily. This  
hook can be installed on either side of the tool.  
Hex wrench 3  
To remove the hex wrench 3 from the hook, press up on the  
end of the hex wrench as shown in the figure.  
Press up  
CAUTION:  
Always disconnect the hose when hanging the tool using  
the hook.  
Always tighten the hook securing bolt firmly.  
Never hang the tool on a waist belt or the like.  
Dangerous accidental firing may result.  
Nails  
Avoid storing nails in a very humid or hot place or place  
exposed to direct sunlight.  
14  
 
MAINTENANCE  
CAUTION:  
Always disconnect the hose before attempting to  
perform inspection or maintenance.  
Maintenance of nailer  
Always check the tool for its overall condition and loose  
screws before operation. Tighten as required.  
With tool disconnected, make daily inspection to assure free  
movement of the nail guide and trigger. Do not use tool if the  
nail guide or trigger sticks or binds.  
Trigger  
Nail guide  
When the tool is not to be used for an extended period of  
time, lubricate the tool using pneumatic tool oil and store the  
tool in a safe place. Avoid exposure to direct sunlight and/or  
a humid or hot environment.  
15  
 
Maintenance of compressor, air set and air hose  
After operation, always drain the compressor tank and the air  
filter. If moisture is allowed to enter the tool, it may result in  
poor performance and possible tool failure.  
Check regularly to see if there is sufficient pneumatic oil in  
the oiler of the air set. Failure to maintain sufficient lubrica-  
tion will cause O-rings to wear quickly.  
Keep the air hose away from heat (over 60°C, over 140°F),  
away from chemicals (thinner, strong acids or alkalis). Also,  
route the hose away from obstacles which it may become  
dangerously caught on during operation. Hoses must also be  
directed away from sharp edges and areas which may lead  
to damage or abrasion to the hose.  
To maintain product SAFETY and RELIABILITY, mainte-  
nance and repairs should be performed by Makita Authorized  
or Factory Service Centers, always using Makita replace-  
ment parts.  
16  
 
First-Class  
Postage  
Required  
Post Office will  
not deliver  
without proper  
postage.  
Makita U.S.A., Inc.  
14930 Northam Street  
La Mirada, CA 90638-5753  
Fold  
 
MAIL THIS PORTION  
Your answers to the following questions are appreciated.  
1. This product was purchased from:  
3. How did you learn about this product:  
Home Center  
Other (  
)
Magazine  
Radio  
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Tool Distributor  
From Dealer  
Newspaper  
Store Display  
Catalog  
Exhibition  
From Friend  
Previous Usage  
Other (  
Industrial Supply  
Construction Supply  
)
2. Use of the product is intended for:  
4. Most favored points are:  
Construction Trade  
Industrial Maintenance  
Home Maintenance  
Hobby  
Design  
Repair Service  
Durability  
Power  
Features  
Size  
Price  
Other (  
)
Other (  
)
Makita Brand  
5. Any comments:  
DATE PURCHASED  
MONTH  
MODEL NO.  
DAY  
YEAR  
SERIAL NO.  
STATUS  
SEX  
Married Single  
M
F
INTL.  
LAST NAME / COMPANY NAME  
STREET ADRESS  
CITY  
AREA  
CODE  
STATE  
ZIP CODE  
PHONE  
40-49  
Under 19  
20-29  
30-39  
50-60  
Over 60  
AGE:  
BE SURE TO COMPLETE THE CUSTOMER’S PORTION OF THIS FORM AND RETAIN FOR YOUR RECORDS.  
Please return this portion by facsimile or mail.  
Facsimile No: (714) 522-8133  
 
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FACTORY SERVICE CENTERS  
1-800-4-MAKITA  
RETAIN THIS PORTION FOR YOUR RECORDS  
ALABAMA  
COLORADO  
KENTUCKY  
NEW MEXICO  
PUERTO RICO  
2365 Pelham Parkway  
Pelham, AL 35124  
(205) 620-1791  
11839 E. 51st Ave.  
Denver, CO 80239-2709  
(303) 371-2850  
1215 S. Hurstbourne Parkway  
Louisville, KY 40222  
(502) 326-3740  
5805 Menaul Blvd. NE  
Albuquerque, NM 87110  
(505) 881-4619  
200 Guayama St.  
Hato Rey, PR 00917  
(787) 250-8776  
ARIZONA  
CONNECTICUT  
508 Spring St.  
Windsor Locks, CT 06096  
(860) 292-6405  
LOUSIANA  
NEW YORK  
TENNESSEE  
3707 E. Broadway Rd., Ste. 6  
Phoenix, AZ 85040  
(602) 437-2850  
5626 Jefferson Hwy.  
Harahan, LA 70123  
(504) 733-4138  
4917 Genessee Street  
Cheektowaga, NY 14225  
(716) 685-9503  
4655 Nolensville Rd.  
Nashville, TN 37211  
(615) 331-9922  
131-35 31st Ave.  
Flushing, NY 11354  
(718) 886-0971  
ARKANSAS  
FLORIDA  
MARYLAND  
TEXAS  
Shackleford Shopping Center  
240 South Shackleford Rd.,  
Ste. C  
620 Douglas Ave. Suite 1302  
Altamonte Springs, FL 32714  
(407) 774-6000  
7541 - 45 Ritchie Highway  
Glen Burnie, MD 21061  
(410) 590-0160  
12801 Stemmons Fwy Ste. 809  
Farmers Branch, TX 75234  
(972) 243-1150  
Little Rock, AR 72211  
(501) 224-5733  
NORTH CAROLINA  
3501-G S. Tryon St.  
Charlotte, NC 28217  
(704) 527-0611  
750 East Sample Road  
Pompano Beach, FL 33064  
(954) 781-6333  
12701 Directors Dr.  
Stafford, TX 77477-3701  
(281) 565-8665  
MASSACHUSETTS  
232 Providence Hwy.  
Westwood, MA 02090  
(617) 461-9754  
CALIFORNIA  
41850 Christy St.  
Fremont, CA 94538-5107  
(510) 657-9881  
Thompson Center Waters  
5501 W. Waters Ave., Ste. 406  
Tampa, FL 33634  
3453 IH-35 North, Ste. 101  
San Antonio, TX 78219  
(210) 228-0676  
OHIO  
6253 E. Main St.  
Columbus, OH 43213  
(614) 860-0222  
(813) 886-8292  
MICHIGAN  
1421 N. Clovis Ave., Ste. 112  
Fresno, CA 93727  
(559) 252-5166  
37454 Ann Arbor Trail  
Livonia, MI 48150  
(313) 432-1012  
UTAH  
GEORGIA  
6379 Pearl Road  
Parma Heights, OH 44130  
(440) 843-7555  
145 E. 1300 S., Ste. 101  
Salt Lake City, UT 84115  
(801) 359-3410  
4680 River Green Parkway  
Duluth, GA 30096-2566  
(770) 476-8911  
14930 Northam St.  
La Mirada, CA 90638-5753  
(714) 522-8088  
MINNESOTA  
6427 Penn Ave. South  
Richfield, MN 55423  
(612) 869-5199  
1617 E. Kemper Rd.  
Sharonville, OH 45246  
(513) 771-0788  
VIRGINIA  
5760 Northampton Blvd,. Ste.  
102  
Virginia Beach, VA 23455  
(757) 460-0280  
1970 Fulton Avenue  
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4510 Salt Lake Blvd., Suite A7  
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(405) 752-2655  
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8403 Michigan Road, Unit 1  
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2245 S. 108th St. West Allis, WI  
53227  
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3375 S. Decatur Blvd.  
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6200 Babcock Blvd  
Pittsburgh, PA 15237  
(412) 366-6363  
251 Herrod Blvd.  
Dayton, NJ 08810-1539  
(609) 655-1212  
CUSTOMER’S RECORD  
Date Purchased  
When you need service: Send  
complete tool (prepaid) to one  
of the Makita Factory Service  
Centers listed, or to an Authorized  
Makita Service Center. Be sure  
to attach a letter to the outside of  
the carton detailing the problem  
with your tool.  
Dealer’s Name & Address  
Model No.  
Serial No.  
19  
 
MAKITA LIMITED ONE YEAR WARRANTY  
Warranty Policy  
Every Makita tool is thoroughly inspected and tested before leaving the factory. It is warranted to be free of  
defects from workmanship and materials for the period of ONE YEAR from the date of original purchase.  
Should any trouble develop during this one-year period, return the COMPLETE tool, freight prepaid, to one of  
Makita's Factory or Authorized Service Centers. If inspection shows the trouble is caused by defective  
workmanship or material, Makita will repair (or at our option, replace) without charge.  
This Warranty does not apply where:  
• repairs have been made or attempted by others:  
• repairs are required because of normal wear and tear:  
• the tool has been abused, misused or improperly maintained:  
• alterations have been made to the tool.  
IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTAL OR CONSEQUENTIAL  
DAMAGES FROM THE SALE OR USE OF THE PRODUCT. THIS DISCLAIMER APPLIES BOTH DURING  
AND AFTER THE TERM OF THIS WARRANTY.  
MAKITA DISCLAIMS LIABILITY FOR ANY IMPLIED WARRANTIES, INCLUDING IMPLIED WARRANTIES OF  
"MERCHANTABILITY" AND "FITNESS FOR A SPECIFIC PURPOSE," AFTER THE ONE-YEAR TERM OF  
THIS WARRANTY.  
This Warranty gives you specific legal rights, and you may also have other rights which vary form state to state.  
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above  
limitation or exclusion may not apply to you. Some states do not allow limitation on how long an implied  
warranty lasts, so the above limitation may not apply to you.  
Makita Corporation  
3-11-8, Sumiyoshi-cho,  
Anjo, Aichi 446-8502 Japan  
884277C065  
 

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