Harbor Freight Tools 93257 User Manual

COIL SIDING NAILER

®

WITH MAGNESIUM BODY

Model 93257

ASSEMBLY AND OPERATING INSTRUCTIONS

Due to continuing improvements, actual product may differ slightly from the product described herein.

3491 Mission Oaks Blvd., Camarillo, CA 93011

Visit our Web site at: http://www.harborfreight.com

TO PREVENT SERIOUS INJURY,

READ AND UNDERSTAND ALL WARNINGS

AND INSTRUCTIONS BEFORE USE.

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.

PRODUCT SPECIFICATIONS

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yticapaCenizagaMsliaN004–052

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* The air pressure setting must not exceed job site regulations/restrictions. The air pressure setting
must not exceed 90 PSI when being used with work pieces that have a thickness of less than 1-3/4”.

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.

REV 10/05 REV 11/06

SKU 93257 For technical questions, please call 1-800-444-3353 PAGE 2

6. Dress properly. Do not wear loose clothing or jewelry as they can be caught in
moving parts. Protective, electrically nonconductive clothes and nonskid
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.

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 a NIOSH-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 wrenches. Check that 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 nails 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.

SKU 93257 For technical questions, please call 1-800-444-3353 PAGE 3

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 a longer air hose, 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 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 the tool contains nails.

22. Disconnect air supply before loading the Nailer. Before reloading (or making
any adjustments to) the Nailer, make sure 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 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 impact 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.

SKU 93257 For technical questions, please call 1-800-444-3353 PAGE 4

25. Take caution, as some woods contain preservatives such as copper
chromium arsenate (CCA) which can be toxic. When 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, 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 Nailer above 125 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 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 13 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.

Rev 11/06

SKU 93257 For technical questions, please call 1-800-444-3353 PAGE 5

OPERATION

For best service, you should incorporate an oiler, regulator, and inline filter, as
shown in the diagram below. Hoses, couplers, oilers, regulators, and filters are all
available at Harbor Freight Tools. NOTE: If an automatic oiler is not used, for
smoother operation and to extend the life-span of the tool, put 3-5 drops of
pneumatic Tool Oil (93) in the attached Air Plug (82-not included) before each
use.

QUICK

CONNECTOR

QUICK

COUPLER

NAILER

AIR

HOSE

QUICK

CONNECTOR

QUICK

COUPLER

OILER

REGULATOR

FILTER

AIR

COMPRESSOR

FIGURE A

CONNECTION TO AIR SUPPLY

TESTING THE FULL SEQUENTIAL SAFETY TRIP 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. Make sure the tool is disconnected from its air supply.

2. Completely empty the Magazine (85) of Nails. Then, close the Magazine.

(See Figure B.)

FIGURE B

TRIGGER

(60)

AIR PLUG

(82-not included)

MAGAZINE

(85)

SAFETY

(38)

REV 12/06

SKU 93257 For technical questions, please call 1-800-444-3353 PAGE 6

3. Connect the air supply to the tool at the Air Plug (82-not included). Set the regula­tor at the recommended 70 to 125 operating PSI. Do not exceed the maximum

125 PSI.

4. Test the tool by depressing the Safety (38) against a piece of scrap wood without
pulling the Trigger (60). The tool must not cycle (fire). If it cycles (fires), stop
immediately and have it repaired by a qualified service technician.

(See Figure B.)

5. Hold the tool away or off the workpiece. The Safety (38) of the tool should return
to its original position. Squeeze the Trigger (60). The tool should not cycle
(fire). If the tool cycles (fires), stop immediately and have it repaired by a qualified
service technician. (See Figure B.)

6. Depress the Safety (38) against the workpiece and squeeze the Trigger (60). 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 Nailer and press

it against the scrap wood again. The tool must not cycle (fire). If it fails to
perform in the manner explained in bold, have it repaired by a qualified service
technician. (See Figure B.)

LOADING COIL NAILS

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.

WARNING! Make sure the Nailer is not attached to the air hose when

loading the tool.

1. To open the Magazine Cover (91), press down on the Latch (57) and swing the
Door (32) open. Then, swing the Magazine Cover open. (See Figure C.)

MAGAZINE COVER

(91)

LATCH

(57)

DOOR

(32)

FIGURE C

Rev 11/06; REV 12/06

SKU 93257 For technical questions, please call 1-800-444-3353 PAGE 7

2. Check the Nail Support (88) inside the Magazine (85). The Nail Support can be
adjusted up and down to use various lengths of nails from 1-1/4” to 2-1/8”:

(See Figure D.)

A. 1-1/4” Long Nails (Turn Magazine Post (87) to
B. Between 1-1/4” and 2-1/8” Long Nails (Use
C. 2-1/8” Long Nails (Use

DOOR

(32)

FIGURE D

FEED PAWL

(42)

bottom

MAGAZINE POST

(TURN TO ADJUST HEIGHT)

setting).

(87)

NAIL SUPPORT

(88)

top

setting).

middle

setting).

(NOT INCLUDED)

MAGAZINE COVER

(91)

NAILS

3. Place a coil of Nails (not included) around the Nail Support (88) in the
Magazine (85). (See Figure D.)

4. Uncoil enough Nails to reach the Feed Pawl (42). Place the second Nail on the
coil between the teeth of the Feed Pawl, making sure the Nail head fits in the slot
in the upper portion of the Feed Pawl. (See Figure D.)

5. Swing the Magazine Cover (91) closed. Then, close the Door (32). Make sure
the Door closes securely. If it does not engage, the Nail head is not in the slot in
the upper portion of the Feed Pawl (42). (See Figure D.)

OPERATING THE NAILER

1. Attach the Nailer to the air supply at the Air Plug (82-not included). Start your
compressor and check the pressure, making sure it is set at the recommended 70
to 125 PSI. Do not exceed the maximum 125 PSI.

2. Rotate the Exhaust Cover (2) so that the exhaust air blast will be directed away
from the operator. (See Figure E, next page

Rev 11/06; REV 12/06

SKU 93257 For technical questions, please call 1-800-444-3353 PAGE 8

3. To fire, place the Safety (38) of the Nailer on the workpiece. The Nailer should
not fire if the Safety is not depressed. Once depressed, gently and briefly
squeeze the Trigger (60) once. Do not fire repeatedly. Nails could bounce off
of one another, damaging the workpiece or causing personal injury.

(See Figure E.)

4. Do not press the Safety (38) against the workpiece with extra force. Allow the
tool to do the work. Always allow the tool to recoil off the work surface.

(See Figure E.)

5. When finished using the Nailer, always disconnect the tool from its air supply.
Empty the Magazine (85) completely of nails. Attempt to fire the Nailer into a
piece of scrap wood to ensure it is disconnected and is incapable of firing any
nails. (See Figure E.)

6. Make sure to store the Nailer in a clean, dry, safe location out of reach of children.

EXHAUST COVER

(2)

SAFETY

(38)

FIGURE E

TRIGGER

(60)

AIR PLUG

(82-not included)

MAGAZINE

(85)

REV 12/06

SKU 93257 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 Nailer from its air supply.

2. Empty the Magazine (85) completely.

3. Attempt to fire the Nailer into a piece of scrap wood to ensure that it is disconnected
and is incapable of firing any Nails.

CLEARING JAMS

1. Occasionally, a Nail may become jammed in the firing mechanism of the Nailer,
making the tool inoperable.

2. To remove a jammed Nail, disconnect the Nailer from its air supply. Empty the
Magazine (85) completely of Nails. Attempt to fire the Nailer into a piece of scrap
wood to ensure it is disconnected and is incapable of firing any Nails.

3. Use a pair of needle nose pliers to remove the jammed Nail (usually in the Feed
Pawl (42) area.

4. Replace the coil of nails into the Nailer. Close the Magazine Cover (91) and Door
(32) securely. Then, reconnect the air supply hose to the Nailer.

5. Press the Safety (38) against a piece of scrap wood, and test fire the Nailer
several times while checking for proper operation. If the Nailer 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 nails. Then, store
the Nailer in a clean, dry, safe location out of reach of children.

SKU 93257 For technical questions, please call 1-800-444-3353 PAGE 10

Anytime any maintenance or repairs are done, FIRST:

1. Disconnect the Nailer from its air supply.

2. Empty the Magazine (85) completely.

3. Attempt to fire the Nailer into a piece of scrap wood to ensure that it is disconnected
and is incapable of firing any Nails.

INSPECTION, MAINTENANCE, AND CLEANING

1. Inspect the Nailer frequently and lubricate periodically with pneumatic Tool Oil
(93). Then, wipe dry. Do not use detergent oil or additives as these lubricants will
cause accelerated wear to the internal seals. Use the included Hex Wrench (94)
to ensure bolts are properly tightened; only a qualified technician should open the
Nailer to repair internal parts.

2. Inspect the Filter Unit (80) before each use and clean or replace as necessary.
Dirt and water in the Filter Unit 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.

(See Assy. Diagram.)

3. Clean the external parts of the Nailer with a clean cloth and mild detergent or
nonflammable solvent. Then, dry.

4. Store the tool in a clean, dry, safe location out of reach of children.

5. WARNING: All maintenance, service, or repairs not listed in this manual

are only to be attempted by a qualified service technician.

SKU 93257 For technical questions, please call 1-800-444-3353 PAGE 11

TROUBLESHOOTING

Problem Possible Cause Corrective Action

Trigger Valve leaks air O-Ring cut or cracked Replace O-Ring
Nose leaks air O-Ring or Gasket is cut

or cracked

Bumper cracked or worn

Failure to cycle (fire) Air supply restricted

Tool dry. Lack of lubrication

Broken Cylinder Cap Spring
Lack of power Air pressure too low Check air supply equipment
Slow to cycle (fire) Broken Cylinder Cap Spring

O-Rings/Seals cut or cracked

Exhaust blocked

Tool dry, lack of lubrication
Nails jam in tool Bent nails

Broken/chipped Driver

Wrong size/type nail

Replace O-Ring or Gasket

Replace Bumper
Check air supply equipment

Use Air Tool Oil

Replace Cylinder Cap Spring

Replace Cylinder Cap Spring

Replace O-Rings/Seals

Check Bumper & Head Valve Spring

Use Air Tool Oil
Replace with new nails

Replace Driver

Replace with correct size/type nail

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 KIND TO THE BUYER 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 RISKS 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.

SKU 93257 For technical questions, please call 1-800-444-3353 PAGE 12

PARTS LIST

Part # Description Part # Description

1 Screw 49 Spring
2 Exhaust Cover 50 Spring
3 Screw 51 Spring Guide
4 Elastic Washer 52 Piston Stopper
5 Cylinder Cap (Magnesium) 53 Cover
6 Gasket 54 Clip
7 Head Cap 55 Pin
8 Ring 56 Spring
9 Compression Spring 57 Latch
10 O-Ring 58 O-Ring
11 O-Ring 59 Pin
12 Head Valve 60 Trigger (A)
13 Gasket 61 Receiver
14 Screw 62 Trigger (B)
15 Washer 63 Pin
16 O-Ring 64 Pin
17 Piston Head 65 Grip Handle
18 Driver Rod 66 Trigger Cover
19 Clip 67 Trigger Plunger
20 Cylinder Ring 68 O-Ring
21 O-Ring 69 Spring
22 Cylinder 70 O-Ring
23 Ring 71 Valve Bushing
24 O-Ring 72 O-Ring
25 Body (Magnesium) 73 O-Ring
26 O-Ring 74 Pin
27 Bumper 75 Trigger Valve
28 Pin Guide 76 O-Ring
29 Spring 77 O-Ring
30 Feed Pawl (B) 78 Screw
31 Pin 79 Clip
32 Door 80 Filter Unit
33 Screw 81 End Cap
34 Nose (Bottom Plate) 82 Air Plug (not included)
35 Pin Guide 83 Retainer
36 Cover 84 Pin
37 Pin 85 Magazine
38 Safety 86 Receiver (B)
39 Spring 87 Magazine Post
40 Screw 88 Nail Support
41 Screw 89 Spring
42 Feed Pawl (A) 90 Receiver (A)
43 Pin 91 Magazine Cover
44 Spring 93 Tool Oil
45 Pin 94 Hex Wrench
46 Feed Piston A1 Control Air Valve
47 O-Ring A2 Main Piston Unit
48 O-Ring

REV 12/06

SKU 93257 For technical questions, please call 1-800-444-3353 PAGE 13

ASSEMBLY DIAGRAM

#82 Air Plug (not
included)
#93 Tool Oil
#94 Hex Wrench
Not Shown

NOTE:

Some parts are listed and shown for illustration purposes only,

and are not available individually as replacement parts.

REV 12/06

SKU 93257 For technical questions, please call 1-800-444-3353 PAGE 14