Central Pneumatic 42332 User manual

AIR STAPLER KIT
Model 42332
ASSEMBLY AND OPERATING INSTRUCTIONS
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit ourWeb site at:http://www.harborfreight.com
Copyright 2005 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.
®
©
TO PREVENT SERIOUS INJURY,
READ AND UNDERSTAND ALL WARNINGS
AND INSTRUCTIONS BEFORE USE.
Due to continuing improvements, actual product may differ slightly from the product described herein.

PRODUCT SPECIFICATIONS
SAVE THIS MANUAL
You will need this manual for the safety warnings and precautions, assembly, operating,
inspection, maintenance and cleaning procedures, parts list and assembly diagram.
Keep your invoice with this manual. Write the invoice number on the inside of the front
cover. Keep this 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 flammable 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.
SKU 42332 For technical questions, please call 1-800-444-3353 PAGE 2
Item Description
Staple Size Capacity 3/8” to 1” Staple Lengths, 18 Gauge
Magazine Capacity 100 Staples
Operating PSI 55-95 PSI
Air Inlet Size ¼” NPT
Trigger Mechanism Type Contact Safety Trip Mechanism
Overall Dimensions 10-1/4” L x 2” W x 7-3/8” H
Unit Weight 2.7 Pounds
Accessories Included 3mm Hex Wrench, 4mm Hex Wrench,
Tool Oil, 1,000 Staples of Each Size: 3/8”, ½” 1”

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 foot-
wear 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.
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 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.
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
Stapler, clear jams, or disassemble with the air hose attached. Always release
any built-up air even after disconnecting hose. Disconnect the Stapler when not
in use.
11. Remove adjusting wrenches. Check that adjusting wrenches are removed
from the tool or machine work surface before attaching to an air source.
12. Avoid unintential 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 staples 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
operateproperly.
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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.
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 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 trip or your panel fuse to break.
If this happens, either use the compressor 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 staples with the trigger or safety depressed. Unintentional firing
may occur. Do not load staples when the air hose is connected to the tool.
Always assume the tool contains staples.
22. Disconnect air supply before loading the Stapler. Before reloading (or making
any adjustments to) the Stapler, make sure the compressed air is disconnected.
23. Fire staples into an appropriate work surface only. Do not attempt to fire
staples into surfaces too hard to penetrate. Do not drive staples on top of other
staples, or at too steep an angle. Staples can ricochet, causing personal injury.
Never fire the Stapler into the air, or point it toward yourself or another person.
Always wear ANSI approved impact safety goggles during use, maintenance, and
reloading.
24. Do not fire staples 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 stapling these materials
extra care should be taken to avoid inhalation and minimize skin contact.
WARNING: Some dust created by power sanding, sawing, grinding, drill
ing, 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, cement, and 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 Stapler above 95 PSI.
27. Hold tool away from head and body. During operation the Stapler may kick
back, causing injury.
28. Transport Stapler safely. Always disconnect air supply when moving the tool in
the workplace. Carry the tool by the handle to avoid contact with the trigger.
29. Avoid working alone. If an accident happens, an assistant can bring help.
30. 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 the tool performance.
31. 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 that all accessories listed on page 11 are
included, and the product is intact and undamaged. 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
For best service, you should incorporate an oiler, regulator, and in-line filter, as
SKU 42332 For technical questions, please call 1-800-444-3353 PAGE 5

shown in the diagram below. Hoses, couplers, oilers, regulators, and filters are
all available at Harbor Freight Tools. NOTE: For smoother operation, and to
extend the lifespan of the tool, put 3-5 drops of pneumatic Tool Oil (68) in the
attached Air Plug (66) before each use.
STAPLER
QUICK
CONNECTOR
QUICK
COUPLER
AIR
HOSE
QUICK
COUPLER
QUICK
CONNECTOROILER
REGULATOR
FILTER
AIR
COMPRESSOR
CONNECTION TO AIR SUPPLY
TESTING THE CONTACT SAFETY TRIP MECHANISM
WARNING: Even though the Stapler should be empty during this
procedure, ALWAYS point the Stapler at a piece of scrap wood when test
ing.
1. Make sure the tool is disconnected from its air supply.
2. Completely empty the Magazine B (49) of Staples (69).
3. The Stapler should not fire if the Drive Guide (48) is not depressed against the
workpiece.
4. Make sure the Trigger (35) and Drive Guide (48) move freely, without sticking.
TRIGGER
(35)
MAGAZINE B (49)
DRIVE GUIDE (48)
SKU 42332 For technical questions, please call 1-800-444-3353 PAGE 6
AIR PLUG
(66)

5. Connect the air supply to the tool at the Air Plug (66). Set the regulator at the
recommended 55 to 95 operating PSI. Do not exceed the maximum 95 PSI.
6. Test the tool by depressing the Drive Guide (48) against the workpiece without
pulling the Trigger (35). The tool must not cycle (fire). If it cycles (fires), stop
immediately and have it repaired by a qualified service technician.
7. Hold the tool away or off the workpiece. The Drive Guide (48) of the tool should
return to its original position. Squeeze the Trigger (35). The tool should not
cycle (fire). If the tool cycles (fires), stop immediately and have it repaired by a
qualified service technician.
8. Depress the Drive Guide (48) against the workpiece and squeeze the Trigger
(35). The tool must cycle (fire) only once. Release the Trigger and squeeze it
again. The tool must not cycle (fire). With the Trigger held, carefully lift the
Stapler and press it against the workpiece again. The tool must cycle (fire). If
it fails to perform in the manner explained in bold, have it repaired by a qualified
service technician.
LOADING STAPLES
WARNING: Always wear ANSI approved impact safety goggles when
reloading or performing any other maintenance on this tool. Other people in
the work area must also wear ANSI approved impact safety goggles.
1. Disconnect air supply before loading the Stapler. Depress the Lock (58) to re
lease the Magazine A (41) and pull the Magazine out fully.
2. Place a full clip of the desired appropriate size Staples (69) in the Magazine B
(49). Up to 100 Staples may be loaded in the Magazine.
MAGAZINEA(41) MAGAZINE B (49)
LOCK (58)
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3. Push the Magazine A (41) back into the Stapler and secure it with the Lock (58).
OPERATING THE STAPLER
1. Attach the Stapler to the air supply at the Air Plug (66). Start your compressor
and check the pressure, making sure it is set at the recommended 55-95 PSI.
Do not exceed the maximum 95 PSI.
2. Rotate the Exhaust Cover (1) so that the exhaust air blast will be directed away
from the operator.
3. To fire, place the Drive Guide (48) on the Stapler on the workpiece. The Stapler
should not fire if the Drive Guide is not depressed. Once depressed, gently and
briefly squeeze the Trigger (35) once. Do not fire repeatedly. Staples could
bounce off of one another, damaging the workpiece or causing personal injury.
4. Do not press the Drive Guide (48) against the workpiece with extra force. Allow
the tool to do the work. Always allow the tool to recoil off the work surface.
5. When finished using the Stapler, always disconnect the tool from its air supply.
Empty the Magazine B (49) completely of Staples (69). Attempt to fire the Stapler
into a piece of scrap wood to ensure it is disconnected and is incapable of firing
any Staples.
6. Make sure to store the Stapler in a clean, dry, safe location out of reach of
children.
MAGAZINE B (49) DRIVE GUIDE (48)
TRIGGER
(35)
DRIVE COVER (46)

SKU 42332 For technical questions, please call 1-800-444-3353 PAGE 9
Anytime any maintenance or repairs are done (including clearing jams), FIRST:
1. Disconnect the Stapler from its air supply.
2. Empty the Magazine B (49) completely.
3. Attempt to fire the Stapler into a piece of scrap wood to ensure that it is
disconnected and is incapable of firing any Staples.
4. Always leave the Magazine B (49) open during maintenance. The Magazine is
spring loaded, and may cause parts or a Staple to fly out of the Stapler.
CLEARING JAMS
1. Occasionally, a Staple (69) may become jammed in the firing mechanism of the
Stapler, making the tool inoperable. To remove a jammed Staple, disconnect the
Stapler from its air supply. Empty the Magazine B (49) completely of Staples.
Attempt to fire the Stapler into a piece of scrap wood to ensure it is disconnected
and is incapable of firing any Staples.
2. Unlatch and remove the Drive Cover (46). This allows access to the Drive Guide
(48) where a Staple (69) will usually jam.
3. Use a pair of needle nose pliers to remove the jammed Staple (69). Then, replace
the Drive Cover (46).
4. Reload the Stapler with Staples (69). Then, reconnect the air supply hose to the
tool.
5. Press the Drive Guide (48) against a piece of scrap wood, and test fire the Stapler
several times while checking for proper operation. If the Stapler is properly firing,
you may continue using the tool. If the tool fails to perform properly, immediately
discontinue use and have the tool repaired by a qualified service technician.
6. When finished working, disconnect the air supply. Remove the Staples (69).
Then, store the Stapler in a clean, dry, safe location out of reach of children.
Anytime any maintenance or repairs are done, FIRST:
1. Disconnect the Stapler from its air supply.
2. Empty the Magazine B (49) completely.
3. Attempt to fire the Stapler into a piece of scrap wood to ensure that it is
disconnected and is incapable of firing any Staples.
4. Always leave the Magazine B (49) open during maintenance. The Magazine is
spring loaded, and may cause parts or a Staple to fly out of the Stapler.

SKU 42332 For technical questions, please call 1-800-444-3353 PAGE 10
INSPECTION, MAINTENANCE, AND CLEANING
1. Inspect the Stapler frequently and lubricate periodically with pneumatic Tool Oil
(68). Then, wipe dry. Do not use detergent oil or additives as these lubricants
will cause accelerated wear to the internal seals.
2. Inspect the air supply Screen (65) before each use and clean or replace as
necessary. Dirt and water in the air supply Screen are major causes of pneumatic
tool wear. Use an oiler/filter in the compressed air system for better performance
and longer tool life. The filter must have adequate flow capacity for the specific
application.
3. Clean the external parts of the Stapler with a clean cloth and mild detergent or
non-flammable solvent. Then, dry.
4. Store the tool in a clean, dry, safe location out of reach of children.
5. CAUTION: All maintenance, service, or repairs not listed in this manual
are nly to be attempted by a qualified service technician.
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 MANUFACTURER OR DISTRIBUTOR MAKES ANY
REPRESENTATION OR WARRANTY OF ANY KINDTOTHE BUYERTHAT 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 RISKS 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.

NOTE:
Some parts are listed and shown for illustration purposes only,
and are not available individually as replacement parts.
PARTS LIST AND ASSEMBLY DIAGRAM
Part # Description Part # Description Part # Description
1 Exhaust Cover 24 Spring Pin 47 Hex Bolt
2 Hex Bolt 25 Seal 48 Drive Guide
3 Cylinder Cap Unit 26 Trigger Valve Head 49 Magazine (B)
4 O-Ring 27 Spring 50 Washer
5 Seal 28 O-Ring 51 Spring
6 Seal 29 Trigger Valve Stem 52 Connector
7 Spring 30 O-Ring 53 Pusher Supporter
8 O-Ring 31 Trigger Valve Guide 54 Click Lever
9 Head Valve Piston 32 Spring Pin 55 Pin
10 O-Ring 33 Washer 56 Tail Hanger
11 Stop Washer 34 Spring 57 Spring
12 O-Ring 35 Trigger 58 Lock
13 Collar 36 Pin 59 Hex Bolt
14 O-Ring 37 Washer 60 Nut
15 Main Piston Unit 38 Soft Cover 61 Rubber Cushion
16 O-Ring 39 Spacer 62 O-Ring
17 Cylinder 40 Hex Bolt 63 Rear Cap
18 Bumper 41 Magazine (A) 64 Adapter
19 Body 42 Stopper 65 Screen
20 Washer 43 Washer 66 Air Plug
21 Safety Tip Guide 44 Cover 67 Hex Wrench Set
22 Spring 45 Spring Pin 68 Tool Oil
23 Safety Tip 46 Drive Cover 69 3/8”, ½”, 1” Staples
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
3132
33
343536
37
2
38 3940
41
42
43
44 45 464748
49
50
40
51
52
53
54
55
2
56
57
58
59 33
60
61 62 63 646566
67: HEX WRENCH SET NOT SHOWN.
68:TOOL OIL NOT SHOWN.
69: 3/8”, 1/2”, 1” STAPLES (1,000 EACH) NOT SHOWN.
SKU 42332 For technical questions, please call 1-800-444-3353 PAGE 11