MasterCraft 058-8489-4 User manual

INSTRUCTION MANUAL
AIR-POWERED 3-IN-1 NAILER
058-8489-4

TABLE OF CONTENTS
2
AIR-POWERED 3-IN-1 NAILER 058-8489-4
QUICK START GUIDE
TECHNICAL SPECIFICATIONS 3
SAFETY GUIDELINES 4–9
KEY PARTS DIAGRAM 10
IMPORTANT INFORMATION 11–14
OPERATING INSTRUCTIONS 15–20
MAINTENANCE 21–22
TROUBLESHOOTING 23–25
EXPLODED VIEW 26
PARTS LIST 27–28
WARRANTY 29–30

SAFETY GUIDELINES
4
AIR-POWERED 3-IN-1 NAILER 058-8489-4
Safety guidelines
This manual contains information that relates to PROTECTING PERSONAL SAFETY and PREVENTING
EQUIPMENT PROBLEMS. It is very important to read this manual carefully and understand it
thoroughly before using the product. The symbols listed below are used to indicate this information.
Note- The word “Note” is used to inform the
reader of something he/she needs to know about
the tool.
PERSONAL SAFETY
These precautions are intended for the personal safety of the user and others working with the user.
Please take time to read and understand them.
DANGER!
Potential hazard that will result in serious
injury or loss of life.
WARNING!
Potential hazard that could result in
serious injury or loss of life.
CAUTION!
Potential hazard that may result in
moderate injury or damage to equipment.

SAFETY GUIDELINES
5
AIR-POWERED 3-IN-1 NAILER 058-8489-4
SAFETY GUIDELINES
Note: Carefully read and understand all the instructions in this manual before using the tool. Ensure
that the operator has read and understood these instructions.
DANGER!
Potential hazard that will result in serious injury or loss of life.
•Keep children away from the work area. Do not allow children to handle
power tools.
•Keep air hose away from heat, oil, and sharp edges. Check air hose for
wear before each use and ensure that all connections are proper.
•Always ensure that the workpiece is firmly secured leaving both hands free
to control the tool.
•Always ensure that the tool has stopped before putting it down after use, for
safety purposes and to prevent possible damage to the tool/user.
•Keep proper footing at all times in order to ensure correct balance.
•Do not use oxygen or any other combustible or bottled
gas to power air-powered tools. Failure to observe this
warning can cause explosion and serious personal injury
or death. Use only the compressed air to power the air-
powered tools. Use a minimum of 25' (7.6 m) of hose to
connect the tool to the compressor. Failure to comply will
result in serious injury or loss of life.
•Risk of electric shock: Do not expose a compressor to rain. Store it indoors.
Disconnect the compressor from power source before servicing. Compressor
must be grounded. Do not use grounding adaptors.
•Risk of personal injury: Do not direct compressed air from the air hose
towards the user or other personnel.
Oxygen
Hydrogen
Explosive
Combustible
MC-OM-02

SAFETY GUIDELINES
6
AIR-POWERED 3-IN-1 NAILER 058-8489-4
•Risk for breathing: Never directly inhale the air produced by the compressor.
•Risk of bursting: Do not adjust the pressure switch or safety valve for any
reason. They have been preset at the factory for this compressor’s maximum
pressure. Tampering with the pressure switch or the safety valve may cause
personal injury or property damage.
•Risk of burns: The pump and the manifold generate high temperatures. In
order to avoid burns or other injuries, do not touch the pump, the manifold,
or the transfer tube while the compressor is running. Allow the parts to cool
down before handling or servicing. Keep children away from the compressor
at all times.
•Risk of bursting: Make sure the regulator is adjusted so
that the compressor outlet pressure is set lower than the
maximum operating pressure of the tool. Before starting
the compressor, pull the ring on the safety valve to make
sure the valve moves freely. Drain water from tank after
each use. Do not weld or repair tank. Relieve all pressure
in the hose before removing or attaching accessories. MC-OM-22

SAFETY GUIDELINES
7
AIR-POWERED 3-IN-1 NAILER 058-8489-4
WARNING!
Potential hazard that could result in serious injury or loss of life.
•Do not allow unskilled or untrained individuals to operate the Air-powered
3-in-1 Nailer.
•Do not use the Air-powered 3-in-1 Nailer for any task other than that it is
designed to perform.
•Locate the compressor in a well-ventilated area for cooling, and a minimum
of 12" (31 cm) away from the nearest wall.
•Protect the air hose and the power cord from damage and puncture. Inspect
them for weak or worn spots every week and replace them if necessary.
•Always wear hearing protection when using the air compressor. Failure to do
so may result in hearing loss.
•Do not carry the compressor while it is running.
•Do not operate the compressor if it is not in a stable position.
•Do not operate the compressor on a rooftop or an elevated position that
could allow the unit to fall or be tipped over.
•Always replace a damaged gauge before operating the unit again.

SAFETY GUIDELINES
8
AIR-POWERED 3-IN-1 NAILER 058-8489-4
CAUTION!
Potential hazard that may result in moderate injury or damage to
equipment.
•Always ensure that the tool has stopped before connecting to the air supply.
•Do not wear watches, rings, bracelets, or loose clothing when using any air-
powered tool.
•Do not overload the tool. Allow the tool to operate at its optimum speed for
maximum efficiency.
• Do not use a tool that is leaking air, that has missing or damaged parts, or
that requires repairs. Verify that all screws are securely tightened.
• For optimal safety and tool performance, inspect the tool daily in order to
ensure free movement of the trigger, safety mechanisms, and springs.
•Always keep your air tool clean and lubricated. Daily lubrication is essential
to avoid internal corrosion and possible failures.
•Ensure the floor is not slippery and wear non-slip shoes. Floors should be
kept clean and clear.
•Always follow all workshop safety rules, regulations, and conditions when
using the Air-powered 3-in-1 Nailer.
•Carry the tool by the handle only, keeping fingers away from the trigger. Do
not carry the tool by the hose, magazine, or any other parts.
•Do not use the tool near or below freezing point, as doing so may cause tool
failure.
•Do not store the tool in a freezing environment to prevent ice formation on
the tool’s operating valves, as doing so may cause tool failure.
•Handling and storage of oil: Use with adequate ventilation. Avoid contact of
oil with eyes, skin, and clothing. Avoid breathing spray or mist. Store in a
tightly closed container in a cool, dry, well-ventilated area free from
incompatible substances.

SAFETY GUIDELINES
9
AIR-POWERED 3-IN-1 NAILER 058-8489-4
Note: Recycle unwanted materials rather than disposing of them as waste. Sort the tools, hoses, and
packaging in specific categories and take to the local recycling centre or dispose of in an
environmentally safe way.
CAUTION!
Potential hazard that may result in moderate injury or damage to
equipment.
•Disconnect tool from the air supply and turn off the
compressor before performing any maintenance or changing
accessories, when clearing a jammed fastener, when the
tool is not in use, when it is being handed to another
person, and when it is left unattended. Failure to comply
may result in moderate injury or damage to equipment.
•Use safety goggles and ear protection:
Wear safety glasses with side shields when operating the
tool/compressor and verify that others in the work area are
also wearing safety glasses. Safety glasses must conform to
American National Standards Institute (ANSI Z87.1)
requirements and must provide protection from flying
particles from the front and the sides.
Air-powered tools are loud and the sound can cause hearing
damage. Always wear ear protection to prevent hearing
damage and loss. Failure to comply may result in moderate
injury.
MC-OM-21
MC-OM-01

KEY PARTS DIAGRAM
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AIR-POWERED 3-IN-1 NAILER 058-8489-4
No. Description No. Description
1 Air inlet plug 6 Safety tip
2 Trigger 7 Safety stand
3 Depth adjustment dial 8 Release latch
4 Magazine latch 9 Air deflector
5Magazine
3
9
1
4
7
8
65
2
MC-588489-01

IMPORTANT INFORMATION
11
AIR-POWERED 3-IN-1 NAILER 058-8489-4
Compatible compressors
GUIDELINES FOR PROPER USE AND OPERATION
Be sure to use a proper air compressor with Mastercraft® air-powered tools. The compressor should
be able to supply a minimal air delivery of 4 SCFM @ 90 psi to ensure the compressor can run
continuously with the Mastercraft 3-in-1 Nailer.
General use
This Mastercraft®Air-powered 3-in-1 Nailer is an extremely versatile tool made of a strong and
lightweight die cast aluminium body. The tool drives three different types of fasteners, such as 1 ¼"
to 2 ½" (32 to 64 mm) long 16 gauge finishing nails, 5/8 to 2" (15 to 50 mm) long 18 gauge brad
nails, and 5/8 to 1 5/8" (15 to 40 mm) long 18 gauge staples. The tool has a rubber handle that
provides improved control and comfortable grip, even during extended use. This Mastercraft®Air-
powered 3-in-1 Nailer features a 360º air deflector and a touch-strike security system for improved
operator safety. It is best suited for installing door and window trims, decorative trim, small cabinet
work, finish work, paneling, and carpet.
Air compressor
Size & Power 1 1/2 – 2 HP 2 1/2 HP 3 HP and more
4 –5 Gallons Light-duty and
intermittent use
Light-duty and
intermittent use
Light-duty and
intermittent use
6 –11 Gallons Light-duty and
intermittent use
Heavy-duty and
continuous use
Heavy-duty and
continuous use
15 Gallons
and more
Medium-duty and
intermittent use
Heavy-duty and
continuous use
Heavy-duty and
continuous use

IMPORTANT INFORMATION
12
AIR-POWERED 3-IN-1 NAILER 058-8489-4
Air system
• Always use clean, dry, regulated, compressed air at 4.8 to 7 bar (70 to 100 psi).
• Do not exceed the maximum or minimum pressures. Operating the tool at an inappropriate
pressure (too low or too high) will cause excessive noise, rapid wear, or misfiring.
• It is recommended that a filter-regulator-lubricator be used and be located as close to the tool
as possible.
• If a filter-regulator-lubricator is not installed, place up to 6 drops of pneumatic tool oil into the
air inlet plug before each use.
Wood density Nail size Compressor air pressure
≤0.6 g/cm3
<1 1/4" (32 mm) brad nails 70 psi
≥1 1/4" (32 mm) brad nails 90 psi
<1" (25 mm) staples 70 psi
≥1" (25 mm) staples 100 psi
<1 1/4" (32 mm) T nails 70 psi
≥1 1/4" (32 mm) T nails 100 psi
>0.6 g/cm3
<1 1/4" (32 mm) brad nails 90 psi
≥1 1/4" (32 mm) brad nails 110 psi
<1" (25 mm) staples 90 psi
≥1" (25 mm) staples 110 psi
<1 1/4" (32 mm) T nails 90 psi
≥1 1/4" (32 mm) T nails 110 psi
WARNING!
Potential hazard that could result in serious injury or loss of life.
•Donotfree-fire this tool at high pressure.
• Keep hands and other parts of the body away from the tool’s discharge and
working areas when connecting the air supply. Failure to comply could lead
to serious injury or loss of life.

IMPORTANT INFORMATION
13
AIR-POWERED 3-IN-1 NAILER 058-8489-4
• If a filter-regulator-lubricator is installed, keep the air filter clean. A dirty filter will reduce the
air pressure to the tool, which will cause a reduction in power, efficiency, and general
performance.
• For optimal performance, install a quick connector to the tool and a quick coupler on the
hose, if applicable.
• Verify that all of the connections in the air supply system are sealed in order to prevent air
leakage.
Read this Instruction Manual carefully before using the Air-powered 3-in-1 Nailer.
• Read and follow all the safety instructions at the beginning of this manual.
• Inspect the Air-powered 3-in-1 Nailer prior to each use in order to
– ensure that the proper power source is being used.
– verify that the tool is in proper working order.
No. Description No. Description
1 Mastercraft®Air-powered 3-in-1 Nailer 6 Regulator (0 to 8.5 bar)
2 Quick connector 7 Filter
3 Quick coupler 8 Cut-off valve
4 Air hose 9 Air compressor
5 Lubricator
MC-588489-12
257
133
6
8
9
4

IMPORTANT INFORMATION
14
AIR-POWERED 3-IN-1 NAILER 058-8489-4
WARNING!
Potential hazard that could result in serious injury or loss of life.
• Do not use the tool if it is not in proper working order.
• Do not use oxygen, carbon dioxide, or any other combustible or bottled gas
to power this tool.
• Do not use this tool in the presence of any flammable liquids or gases.
• Keep hands and other parts of the body away from the firing head during
use.
• Do not point the tool towards the operator or other people.
• Never attempt to clear a jammed fastener when the air hose is connected.
•Do not drive a fastener on top of an existing fastener.
•Failure to comply could lead to serious injury or loss of life.

OPERATING INSTRUCTIONS
15
AIR-POWERED 3-IN-1 NAILER 058-8489-4
Loading fasteners
1. Disconnect the tool (1) from the air
supply (2)
(fig A) .
2. Hold the tool firmly with one hand and
use the other hand to press the latch (1)
on the magazine (2) and slide it back
(fig B) .
DANGER!
Potential hazard that will result in serious injury or loss of life.
• Disconnect the tool from the air supply before loading or changing
fasteners.
• Do not point the tool towards the operator or other people while loading or
changing fasteners.
• Do not hold the tool with the trigger pressed while loading or changing
fasteners. Failure to comply will lead to serious injury or loss of life.
MC-588489-02
fig A 12
MC-588489-03
fig B
1
2

OPERATING INSTRUCTIONS
16
AIR-POWERED 3-IN-1 NAILER 058-8489-4
3. Insert a strip of fasteners (1) into the
magazine. Ensure the points of the
fasteners are facing down. Slide the
pusher (2) against the fasteners to close
the magazine until it comes into contact
with the fasteners and locks into place
(fig C) . (see nail type icon on
page 19)
4. Plug in compressor, turn it on, set the
pressure regulator to 90 psi, attach one
end of the air hose to the compressor
and the other end of the air hose (1) to
the tool (2). Use plumber’s tape to avoid
air leaks
(fig D) . page 12 (wood
density chart)
5. Test the driving depth using a sample
piece of wood before working on the
workpiece. If the fasteners are being
driven too deep or not deep enough
using the depth adjustment dial, adjust
the regulator in the air supply in order to
provide more or less air pressure, as
required.
MC-588489-04
fig C 1
2
MC-588489-12
21
fig D
WARNING!
Potential hazard that could result in serious injury or loss of life.
• The contact trip lever must be in contact with the workpiece before
activating the tool.
• Do not operate the tool if the fasteners are not loaded, as doing so may
damage the tool.
• Do not fire fasteners into the air, as doing so may cause injury to the
operators or others, apart from damaging the tool.
• Load the correct type of fasteners only. Do not load different sized
fasteners into the magazine, as doing so may cause fasteners to jam.
Failure to comply could lead to serious injury or loss of life.

OPERATING INSTRUCTIONS
17
AIR-POWERED 3-IN-1 NAILER 058-8489-4
INSERTION METHODS
The Mastercraft®Air-powered 3-in-1 Nailer drives finishing nails, brad nails, and staples, which are
to be inserted using different insertion methods.
1. Finishing nails: Insert the nails (1) from
the top area of magazine into the centre
slot at the top of the magazine
(fig E) .
(see nail type icon on page 19)
2. Brad nails: Insert the brad nails (1) into
the channel along the left side of the
magazine
(fig F) . (see nail type
icon on page 19)
3. 7/32 Narrow Crown Staples: Insert the
staples (1) from the top area of the
magazine with one arm of the staple in
the centre slot of the magazine and the
other arm along the left side of the
magazine
(fig G) .
(see nail type icon on page 19)
MC-588489-06
fig E 1
MC-588489-07
fig F 1
MC-588489-08
fig G 1

OPERATING INSTRUCTIONS
18
AIR-POWERED 3-IN-1 NAILER 058-8489-4
Firing modes
The Mastercraft®Air-powered 3-in-1 Nailer is equipped with a single sequential actuation mode that
follows the steps below:
• Press the safety stand (1) against the
workpiece
(fig H) .
• Pull the trigger (2) to drive the fastener
(fig H) .
• Lift the safety stand off the workpiece
and prepare to fire the next fastener.
• If the stand remains pressed against
the workpiece, successive fasteners
will be fired each time the trigger is
pulled.
Fastener depth adjustment
The Mastercraft®Air-powered 3-in-1 Nailer
has a depth adjustment dial below the trigger
to adjust the firing depth of fasteners
(fig I) .
Note: Refer to the graphic imprinted below
the trigger and adjust the firing depth
accordingly.
CAUTION!
Potential hazard that may result in moderate injury or damage to
equipment.
• Operate the tool with the utmost care when connected with air compressor.
Failure to comply may result in moderate injury or damage to equipment.
MC-588489-12
fig H
2
1
MC-588489-09
fig I