®
AIR MINI HAND NAILER
Model 90193
ASSEMBLY and OPERATING
INSTRUCTIONS
®
3491 Mission Oaks Blvd., Camarillo, CA 93011
Copyright c 2003 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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8. Do not overreach. Keep proper footing and balance at all times. Do not reach over
or across running machines or air hoses.
9. 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
handles must be kept clean, dry, and free from oil and grease at all times.
10. Disconnect air supply. Disconnect air hose 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 plugging it in.
12. Stay alert. Watch what you are doing, use common sense. Do not operate any tool
when you are tired.
13. 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.
14. Guard against electric shock. Prevent body contact with grounded surfaces such as
pipes, radiators, ranges, and refrigerator enclosures.
15. Replacement parts and accessories. When servicing, use only identical
replacement parts. 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.
16. Do not operate tool is 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
.
17. Use proper size and type extension cord. If an extension cord is required for the air
compressor, it must be of the proper size and type to supply the correct current to the
tool without heating up. Otherwise, the extension cord could melt and catch fire, or
cause electrical damage to the tool. Check your compressor’s manual for the
appropriate size cord.
18. Maintenance. For your safety, maintenance should be performed regularly by a
qualified technician.
19. Compressed air only. Never use combustible gases as a power source.
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 perfor-
mance.
Warning:The warnings, cautions, and instructions discussed in this instruction manual
cannot cover all possible conditions and situations that may occur. It must be under-
stood by the operator that common sense and caution are factors which cannot be
built into this product, but must be supplied by the operator.
Page 3
SKU 90193
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Unpacking
When unpacking, check to make sure the parts listed on page 6 are included. If any parts
are missing or broken, please call Harbor Freight Tools at the number on the cover of this
manual as soon as possible.
Operation
1/4” - 18 NPT
Mini Nailer
For best service you should incorporate an oiler, regulator, and inline filter, as shown in the
diagram above. Hoses, couplers, oilers, regulators, and filters are all available at Harbor
Freight Tools.
1. You will need to prepare a 1/4”air connector (sold separately) to connect to the Air Inlet (20)
on the Nailer. First, wrap the 1/4” air connector (not included) with pipe thread seal tape before
threading it into the Air Inlet (20). Connect the 3/8” ID Air Source Hose to the air connector.
Note: If you are not using an automatic oiler system, before operation, add a few drops of
Pneumatic Tool Oil to the airline connection. Add a few drops more after each hour of con-
tinual use.
2. Set the air pressure on your compressor to 60-90 PSI. Do not exceed the recommended
air pressure of 90 PSI.
3. Check the air connection for leaks.
Page 4
REV 11/03
SKU 90193
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Operation (continued)
Warning! Do not load a nail into the Nailer until you are ready to work.
Caution: Do not point the Nailer toward any person, pet, or toward yourself.
Immediately after finishing work, disconnect the Nailer from the air source.
Caution: After it is disconnected, the Nailer may still hold enough residual air charge
to fire a nail. With the Guide Box pressed against a solid surface, press down on the
top of the Nailer several times to expel any residual air charge.
FIGURE 1
Grip palm over top.
Air Inlet on back side (not shown)
Guide Box (#18)
4. Holding an 8D, 9/32” nail by the stem (not the tip), insert the head of the nail into the
Guide Box (#18), and grip your palm over the top of the Nailer. See FIGURE 1.
5. Position the nail on the workpiece and press the nail into the workpiece 2 to 6 times, or until
the nail is completely nailed in.
6. When you are finished nailing, immediately disconnect the air hose.
Caution: Do not point the Nailer toward any person, pet, or toward yourself.
Immediately after finishing work, disconnect the Nailer from the air source.
Maintenance
1. Wipe down the Nailer with a lint free cloth.
2. Make sure the Guide Box (#18) and the Air Inlet are free from any dirt or debris.
Page 5
SKU 90193
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Parts List
Part No.
Description
Body
Qty.
1
1
2
3
4
Damping Rubber
Piston Rod
Piston
1
1
1
5
O-Ring
1
6
O-Ring
1
7
Cylinder
1
8
O-Ring
2
9
Rubber Ring
Valve
O-Ring
Gasket
Valve Packing
Cover
Spring Washer
Spring
Guide Bushing
Guide Box
Screw
1
1
2
1
1
1
2
1
1
1
4
1
10
11
12
13
14
15
16
17
18
19
20
Air Inlet
PLEASE READTHE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDEDTHE PARTS DIAGRAM INTHIS
MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR DISTRIBU-
TOR MAKES ANY REPRESENTATION ORWARRANTY OF ANY KINDTO 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 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 PARTS THERETO.
NOTE: Some parts are listed and shown for illustration purposes only and are not available
individually as replacement parts.
Page 6
REV 11/03
SKU 90193
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Assembly Drawing
Page 7
REV 11/03
SKU 90193
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