MasterCraft 058-9331-2 User manual

INSTRUCTION MANUAL
AIR-POWERED HAMMER/CHISEL
058-9331-2

TABLE OF CONTENTS
2
AIR-POWERED HAMMER/CHISEL 058-9331-2
QUICK START GUIDE
TECHNICAL SPECIFICATIONS 3
SAFETY GUIDELINES 4–10
KEY PARTS DIAGRAM 11
IMPORTANT INFORMATION 12–15
OPERATING INSTRUCTIONS 16–17
MAINTENANCE 18–19
TROUBLESHOOTING 20–21
EXPLODED VIEW 22
PARTS LIST 23
WARRANTY 24–25

SAFETY GUIDELINES
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AIR-POWERED HAMMER/CHISEL 058-9331-2
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
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AIR-POWERED HAMMER/CHISEL 058-9331-2
SAFETY GUIDELINES
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.
•Do not use this tool in the presence of flammable liquids or gases. Sparks
that are created during use may ignite gases.
•Do not point the tool toward yourself or other people. Keep hands, feet and
all other parts of the body clear from work area.
•Always ensure that the workpiece is firmly secured, leaving both hands free
to control the tool.
•Always ensure that the tool has stopped after use, for safety purposes and
to prevent possible damage to the tool/user.
•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 compressed air to power 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 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.
•Risk of electric shock: Do not expose a compressor to rain. Store it indoors.
Disconnect the compressor from the power source before servicing.
Compressor must be grounded. Do not use grounding adaptors.
Oxygen
Hydrogen
Explosive
Combustible
MC-OM-02
MC-OM-22

SAFETY GUIDELINES
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AIR-POWERED HAMMER/CHISEL 058-9331-2
•Risk of personal injury: Do not direct compressed air from the air hose
toward the user or other people.
•Breathing risk: 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 the 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.

SAFETY GUIDELINES
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AIR-POWERED HAMMER/CHISEL 058-9331-2
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
Hammer/Chisel.
•Always ensure that the accessories are specially designed/rated for use with
the tool. Also ensure they are secured and correctly fastened before
connecting the tool to the air supply.
•Use only lightweight coil type hoses to connect the tool to the compressor
coupling.
•Locate the compressor in a well-ventilated area for cooling, at 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 parts 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 ori n an elevated position that
could allow the unit to fall or be tipped over.

SAFETY GUIDELINES
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AIR-POWERED HAMMER/CHISEL 058-9331-2
CAUTION!
Potential hazard that may result in moderate injury or damage to
equipment.
•Always ensure that the tool has stopped before connecting it to the air
supply.
•Do not wear watches, rings, bracelets or loose clothing when using any air-
powered tool.
•Maintain proper footing at all times in order to ensure correct balance.
•Do not overload the tool. Allow the tool to operate at its optimum speed for
maximum efficiency.
•Do not use the tool if it is leaking air, has missing or damaged parts, or if it
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.
•Keep the work area clean. A cluttered or dirty workbench may lead to an
accident. Floors should be kept clear.
•Use the tool only in a well-ventilated area.
•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.
•Do not use the tool when temperature of the work area is near or below
freezing, as doing so may cause tool failure.
•Do not store the tool in freezing temperatures to prevent ice formation on
the operating valves of the tool, as doing so may cause tool failure.

SAFETY GUIDELINES
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AIR-POWERED HAMMER/CHISEL 058-9331-2
Note: Recycle unwanted materials rather than disposing of them as waste. Sort the tools, hoses and
package in specific categories and take them to the local recycling centre or dispose of them in an
environmentally safe way.
VIBRATION PRECAUTION!
Potential hazard that could result in serious injury or loss of life.
• Read and follow the safety instructions before using the vibrating tool to
avoid temporary or permanent physical injury, particularly to the hands,
arms, and shoulders, and to reduce the risk of vibration-related injury.
•Do not use the vibrating tool continuously. Always ensure that the person
handling the vibrating tool for extended periods of time is examined by a
doctor periodically and free of medical problems.
•Do not allow a pregnant woman or person with improper blood circulation to
the hand, history of hand injury, nervous system disorder, diabetes or
Raynaud's Disease to operate the vibrating tool.
•Seek medical attention immediately for vibration-related symptoms such as
tingling, numbness, and white or blue fingers.
•Do not smoke while using the vibrating tool to avoid the risk of the
vibration-related injury.
•Use appropriate gloves to reduce the vibration effects on the hands.
•Hold the vibrating tool gently and safely.
•Stop the vibrating tool immediately if abnormal vibration occurs.