Central Pneumatic Contractor 97524 User manual

Model
AIR NAILER/STAPLER
2-IN-1 KIT
97524
40116
ASSEMBLY and OPERATING INSTRUCTIONS
Diagrams within this manual may not be drawn proportionally.
Due to continuing improvements, actual product may differ slightly from the product described herein.
Distributed exclusively by Harbor Freight Tools®.
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our website at: http://www.harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright©2007 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 or replacement parts, please call 1-800-444-3353.

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Specications
Air Inlet 1/4”- 18 NPT
Recommended Air Pressure 60 - 100 PSI, 100 PSI Max.
Magazine Capacity 100 Nails or 80 Staples
Safety Feature Single Sequential Safety Trip Mechanism
Nail Size .039-.042” Shank (18 Gauge),5/8” - 2” L
Staple Size 1/4” Crown, .039-.042” Shank (18 Gauge), 1/2” - 1 1/2” L
Accessories: Oil Dropper, 2 Wrenches, 1 Coupler Plug
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.
Save This Manual
You will need the manual for the safety warnings and precautions, assembly instructions,
operating and maintenance procedures, parts list and diagram. Keep your invoice with this
manual. Write the invoice number on the inside of the front cover. Keep the manual and
invoice in a safe and dry place for future reference.
Safety Warnings and Precautions
WARNING: When using tool, basic safety precautions should always be
followed to reduce the risk of personal injury and damage to equipment.
Read all instructions before using this tool!
1. Keep work area clean. Cluttered areas invite injuries.
2. Observe work area conditions. Do not use machines or power tools in damp or wet
locations. Do not expose to rain. Keep work area well lit. Do not use electrically powered
tools in the presence of ammable gases or liquids.
3. Keep children away. Children must never be allowed in the work area. Do not let them
handle machines, tools, extension cords, or air hoses.
4. Store idle equipment. When not in use, tools must be stored in a dry location to inhibit
rust. Always lock up tools and keep out of reach of children.
5. Use the right tool for the job. Do not attempt to force a small tool or attachment
to do the work of a larger industrial tool. There are certain applications for which this
tool was designed. It will do the job better and more safely at the rate for which it was
intended. Do not modify this tool and do not use this tool for a purpose for which it was
not intended.
6. Dress properly. Do not wear loose clothing or jewelry as they can be caught in
moving parts. Protective, electrically non-conductive clothes and non-skid footwear are
recommended when working. Wear restrictive hair covering to contain long hair.
7. Do not overreach. Keep proper footing and balance at all times. Do not reach over or
across running machines or air hoses.

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8. 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 lings 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.
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 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, disconnected, 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 nger 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 xtures; and any other condition that may affect proper operation. Any part
that is damaged should be properly repaired or replaced by a qualied 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 qualied 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 inuence of alcohol or drugs. Read warning labels
if taking prescription medicine to determine if your judgement or reexes are impaired
while taking drugs. If there is any doubt, do not operate the tool.
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 re, or cause electrical
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 breaker to

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trip or your panel fuse to break. If this happens, either use the compressor without an
extension cord or nd 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 qualied 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 ring
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 fasteners into an appropriate work surface only. Do not attempt to re 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. Never re
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 re fasteners too close to the edge of a workpiece. They may split the
workpiece and y free, causing personal injury.
25. Take caution as some woods contain preservatives such as copper chromium
arsenate (CCA) which can be toxic. When stapling 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 100 PSI.
27. Hold tool away from head and body. During operation the Nailer may kick back causing
injury.
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.
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.

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Unpacking
When unpacking, check to make sure the parts listed on page 9 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.
Testing The Single Sequential Safety Trip Mechanism
Warning: Even though the nailer should be empty during this procedure, ALWAYS point
the nailer/Stapler at a piece of scrap wood when testing.
1. The Nailer/Stapler should not re if the nose is not depressed against the workpiece.
This tool has a contact safety tip mechanism, which is designed to prevent inadvertent
ring. The tool will only re if the Safety (52) is resting on the workpiece prior to pulling
the Trigger (39).
2. Make sure the tool is disconnected from the air supply.
Operation
For best service you should incorporate an oiler, regulator, and inline lter, as shown in the
diagram above. Hoses, couplers, oilers, regulators, and lters 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
on the Nailer/Stapler 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 (86).
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
continual use.
2. Set the air pressure on your compressor to 60-100 PSI. Do not exceed the maximum
air pressure of 100 PSI.
3. Check the air connection for leaks.
Note: The amount of air pressure effects how deep the nails/staples will be driven. It
is suggested that you experiment on scrap material.
4. Check the air connection for leaks and disconnect the Nailer/Stapler.
Nailer/
Stapler
1/4”-18 NPT

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3. Empty the magazine of nails or staples.
4. Check that the Trigger (39) and the Safety (52) on the nose of the tool, move freely,
without sticking.
5. Connect the air supply to the tool at the Air Plug (86) and set at the recommended 70-
100 PSI, and not over the maximum 100 PSI.
6. Test the tool by depressing the Safety (52) on the nose of the tool against the workpiece
without pulling the Trigger (39). The tool must not cycle (re). If it cycles (res), stop
immediately and take the tool to a qualied service technician for repair.
7. Hold the tool away, or off of the workpiece. The Safety (52) or nose of the tool should
return to its original position. Squeeze the Trigger (39). The tool should not cycle (re).
If it cycles (res), stop immediately and take the tool to a qualied service technician.
8. Depress the Safety (52) against the workpiece and squeeze the Trigger (39). The tool
must cycle (re) once only. Release the trigger and squeeze it again. The tool must
cycle (re) once only. With the Trigger held, carefully lift the nailer and press it against
the workpiece again. The tool must not cycle (re). If it fails to act in the manner
explained in bold, have it repaired by a qualied service technician.
Operation - Testing The Single Sequential Safety Trip Mechanism (continued)
Loading Nails or Staples
ALWAYS WEAR ANSI APPROVED IMPACT SAFETY GOGGLES WHEN
RELOADING OR DOING ANY OTHER MAINTENANCE ON THIS TOOL. Other
people in the work area must also wear ANSI approved impact safety goggles.
Warning! Make sure the Nailer/Stapler is not attached to the air hose whenever loading
the tool.
1. Depress the Latch (73) and pull back on the Tail Cover (78), opening Magazine A (67).
2. Insert the brad nails into the Magazine, letting the pointed end ride on the rail of Magazine
B (61). If loading staples, t the crown of the staples so they t over, and ride on the rail
of the Magazine B (61).
3. After the nails or staples reach the nose of the tool, close Magazine A (67).
Note: The window gauge on Magazine A (67) lets you know how many nails or staples remain.
Operating the Stapler/Nailer
1. Attach the Nailer/Stapler to the air supply at the Air Plug (86). Start your compressor
and check the pressure making sure it is set at the recommended 70-100 PSI and not
over the maximum 100 PSI.
2. To re, place the nose of the Nailer/Stapler on the workpiece. The Nailer/Stapler should
not re if the Safety (52) is not depressed. Once depressed, gently and briey squeeze
the Trigger (39) once. Do not re repeatedly; nails or staples could bounce off of one
another, damaging the work piece or causing PERSONAL INJURY.

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Anytime any maintenance or repairs are done (including clearing jams), FIRST:
1. Disconnect the Nailer/Stapler from the air hose.
2. Empty Magazine A (67) completely.
3. Attempt to re the Nailer/Stapler into a piece of scrap wood to ensure that it is
disconnected and is incapable of ring any staples.
4. Always leave Magazine A (67) open during maintenance. The Magazine is spring-
loaded and may cause parts or a fastener to y out of the Nailer/Stapler.
Clearing Jams
1. Disconnect tool from air hose, empty Magazine A
(67) of fasteners, release any built-up air pressure,
and leave the magazine open, as explained above.
2. While doing this step and the next 2 steps, hold the
Nailer/Stapler pointed away from you and any other
people or fragile objects - see Figure 1. Remove all
three Safety Cover Bolts (53) on the Safety Cover
(54) - see Figure 2.
3. Lift the Safety Cover (54) off the top of the Nailer/
Stapler - see Figure 3.
4. Carefully slide the Driver Cover (57) off around the
Safety (52). Note the position of the tab on the Driver
Cover (57). Remove the jammed fastener; pliers
may be necessary to remove a stuck fastener.
5. Inspect the Driver (17A) for bends or breakage. If
it is damaged, do not use the tool until it is repaired
by a qualied technician.
6. Lightly oil the Driver (17A) and replace the Driver
Cover (57) with the tab in the Cover facing the Driver
Guide (58). Replace the Safety Cover (54), being
careful to line up the bolt holes and t the Safety
(52) into the slot. Replace and securely tighten all
of the Safety Cover Bolts (53). Make sure that the
Safety (52) moves without sticking.
7. Reload the Nailer/Stapler.
8. Reconnect the Nailer/Stapler to the air hose.
9. Press the Safety (52) of the Nailer/Stapler against
an appropriate piece of scrap wood.
10. Test re the Nailer/Stapler several times, checking
for proper operation.
11. Disconnect the Nailer/Stapler, remove the fasteners,
and store the Nailer/Stapler in a location out of
children’s reach.
FIGURE 1
FIGURE 2
Safety
Cover (54)
Safety Cover
Bolts (53)
FIGURE 3 Safety
(52)
Safety
Cover (54)
FIGURE 4
Safety
Cover (54)
Driver
Cover (57)
tab

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Anytime any maintenance or repairs are done, FIRST:
1. Disconnect the Nailer/Stapler from the air hose.
2. Empty Magazine A (67) completely.
3. Attempt to re the Nailer/Stapler into a piece of scrap wood to ensure that it is
disconnected and is incapable of ring any staples.
4. Always leave Magazine A (67) open during maintenance. The Magazine is spring-
loaded and may cause parts or a fastener to y out of the Nailer/Stapler.
Troubleshooting Guide
Stop using the Nailer/Stapler immediately if any of the following problems occur.
Repairs and part replacements must be done only by a qualied technician.
All procedures in bold on this chart are to be attempted only be a qualied technician.
Problem Likely Cause Solution
Air leaking at Trigger
area.
O-Rings in Valve Body (100) are
damaged.
Replace O-Rings and check
contact trip operation.
Air leaking between
Housing and Nose.
Loose screws in Housing.1.
Damaged O-Rings/Bumper (94).2.
Tighten screws.1.
Replace O-Rings or Bumper2.
(94).
Air leaking between
Housing and Cap (4).
Loose screws.1.
Damaged Gasket (9).2.
Tighten Screws.1.
Replace Gasket (9).2.
Runs slowly or has power
loss.
Insufcient oil.1.
Broken Spring in Cylinder Cap (4).2.
Exhaust is blocked.3.
Lubricate as instructed.1.
Replace Compression Spring (8).2.
Clean Cap (4) or replace3.
damaged parts.
Tool skips a nail.
Worn Bumper (94) or damaged1.
Pusher Spring.
Dirt in Driver Guide (58).2.
Inadequate airow to Nailer/3.
Stapler.
Worn or dry O-Ring on Piston.4.
Damaged O-Ring on Trigger Valve.5.
Cap Gasket (9) leaking.6.
Replace Bumper (94) or Pusher1.
Spring.
Clean channels in Driver Guide (58).2.
Check hose and compressor3.
ttings.
Replace or lubricate O-Rings.4.
Replace O-Rings.5.
Replace Gasket (9).6.
Fasteners are jammed.
Guide on driver is worn.1.
Fasteners are wrong size or2.
damaged.
MagazineorNose screwsareloose.3.
Driver (17A) is damaged.4.
Replace Guide.1.
Use correct, undamaged2.
Fasteners.
Tighten screws.3.
Replace Driver (17A).4.
Nailer/Stapler will not
drive down tight.
Rounded Driver (17A) slipping off1.
fastener crown.
Lack of air pressure.2.
Slow cycling and loss of power.3.
Replace Driver (17A).1.
Supply correct pressure (60-1002.
PSI).
Check Compression Spring3.
(8) for broken coils or reduced
length.
Make sure Exhaust is clear.
Blade driving fastener too
deeply.
Worn Bumper (94) and/or Piston
Spacer.
Replace either or both parts.
All procedures in bold on this chart are to be attempted only be a qualied technician.

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Maintenance
Warning! Always disconnect the tool from the air compressor and then empty the magazine
of nails or staples before attempting to inspect or perform maintenance to the Nailer/
Stapler.
1. Inspect all of the nuts and screws and make sure they are securely fastened.
2. Periodically lubricate the driving mechanism and magazine with a light oil. Wipe down
with a clean cloth. Never use gasoline or ammable solvents to clean the tool.
3. Inspect your air compressor according to manufacturer’s instructions.
Warning! If you detect any air leaks, power loss, the Nailer/Stapler skips driving, drives too
deep, or not deep enough, take the Nailer/Stapler to a qualied service technician.
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM IN THIS MANUAL
AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR DISTRIBUTOR MAKES ANY
REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT 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 STATES THAT
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.
Parts List
Part Description
1Exhaust Deector
3 Hex. Bolt
4 Head Cap
5 Seal
6 Internal Lining
7 O-Ring
8 Compression Spring
9 Gasket
10 O-Ring
11 Head Valve Piston
12 O-Ring
13 O-Ring
14 O-Ring
16 O-Ring
17A Piston & Driver
26 Body
27 Nozzle
35 Compression Spring
37 Spring Pin
38 E-Ring
Part Description
39 Trigger
40 Retainer Pin
41 Safety Guide
42 Spring Washer
43 Hex Bolt
44 Spring Pin
45 Spring
46 Screw Nut
47 Thumb Wheel
48 Spring
49 Steel Ball
50 Stopper
51 E-Ring
52 Safety
53 Safety Cover Bolt
54 Safety Cover
55 Hex. Bolt
56 Spacer
57 Driver Cover
58 Driver Guide
59 Hex. Bolt
60 Pin
Part Description
61A Magazine B
62A Steel Bar
63 Pusher Unit
64 Spring Holder
66 Spring
67A Magazine A
68 Stopper
69 Hex. Bolt
70 Hex. Bolt
71A Nail Positioner
72 Retaining Pin
73 Latch
74 Spring
75 O-Ring
76 Hex Bolt
77 Cylinder Pin
78 Tail Cover
79 Hex. Bolt
80 Hex. Bolt
81 Tail Hanger
82 Lock Nut
83 Hand Grip
Part Description
84 O-Ring
85 End Cap
86 Air Plug
87 Collar
88 Fixed Ring
89 O-Ring
90 Lining Ring
91 O-Ring
92 Cylinder
93 Lining Ring
94 Bumper
95 Seal
96 Trigger Valve Upper
97 Trigger Plunger
98 O-Ring
99 O-Ring
100 Trigger Valve Lower
101 Trigger Plate
102 Non-mar Tip

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Assembly Drawing
NOTE: Some parts are listed and shown for illustration purposes only and are
not available individually as replacement parts.

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LIMITED 1 YEAR WARRANTY
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality
and durability standards, and warrants to the original purchaser that this product is free from
defects in materials and workmanship for the period of one year from the date of purchase
(90 days if used by a professional contractor or if used as rental equipment). This warranty
does not apply to damage due directly or indirectly, to misuse, abuse, negligence or accidents,
repairs or alterations outside our facilities, normal wear and tear, or to lack of maintenance.
We shall in no event be liable for death, injuries to persons or property, or for incidental,
contingent, special or consequential damages arising from the use of our product. Some states
do not allow the exclusion or limitation of incidental or consequential damages, so the above
limitation of exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF
ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF
MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with
transportation charges prepaid. Proof of purchase date and an explanation of the complaint
must accompany the merchandise. If our inspection veries the defect, we will either repair or
replace the product at our election or we may elect to refund the purchase price if we cannot
readily and quickly provide you with a replacement. We will return repaired products at our
expense, but if we determine there is no defect, or that the defect resulted from causes not
within the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specic legal rights and you may also have other rights which
vary from state to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • [phone]