MasterCraft 8 U.S. GALLON (30.3 L) AIR COMPRESSOR User manual

INSTRUCTION MANUAL
058-9316-0
AIR COMPRESSOR
8 U.S. GALLON (30.3 L)

8 U.S. GALLON (30.3 L) AIR COMPRESSOR 058-9316-0
Quick Start Guide
If any parts are
missing or damaged,
or if you have any
questions, please call
1-800-689-9928.
Read and understand this instruction manual
thoroughly before using the product. It contains
important information for your safety as well as
operating and maintenance advice.
Keep this instruction manual for future use. Should
this product be passed on to a third party, then this
instruction manual must be included.

QUICK START GUIDE
8U.S. GALLONS (30.3 L) AIR COMPRESSOR 058-9316-0
STEP 1
Set the pressure switch (1) to the OFF position.
page 16, step 1
STEP 2
Turn the air pressure regulator knob (1)
counter-clockwis e un ti l it s t o p s. page 16,
step 3
1
MC-589316-01
1
MC-589316-02

STEP 3
Connect the air hose (1) to the compressor’s
air outlet (2) with the quick connector (3).
STEP 4
Close the tank drain valve (1), located on the
bottom of the air tank. page 17,
step 7
MC-589316-03
31
2
1
MC-589316-04

STEP 5
Plug in the power cord (1). page 16,
step 4 and page 17, caution
STEP 6
Set the pressure switch (1) to the ON position.
Turn the air pressure regulator knob (2)
clockwise until desired pressure is reached.
MC-589316-05
1
1
2
MC-589316-06

TABLE OF CONTENTS
2
8U.S. GALLONS (30.3 L) AIR COMPRESSOR 058-9316-0
QUICK START GUIDE
TECHNICAL SPECIFICATIONS 3
SAFETY GUIDELINES 4–8
KEY PARTS DIAGRAM 9
IMPORTANT INFORMATION 10–12
ASSEMBLY INSTRUCTIONS 13–15
OPERATING INSTRUCTIONS 16–20
MAINTENANCE 21–23
TROUBLESHOOTING 24–25
EXPLODED VIEW 26
PARTS LIST 27
WARRANTY 28–29

TECHNICAL SPECIFICATIONS
3
AIR COMPRESSOR 8-GALLON (30.3 L) 058-9316-0
*CFM: Cubic feet per minute (The volumetric flow rate of a gas corrected to standardized conditions
of temperature and pressure).
RUNNING HORSEPOWER 1.5 HP
TANK SIZE 8 U.S. gallons
(30.3 L)
AIR DELIVERY (CFM*) @ 40 PSI 4.8
AIR DELIVERY (CFM*) @ 90 PSI 3.5
CUT-IN PRESSURE 105 PSI
CUT-OUT PRESSURE 135 PSI
PUMP DESIGN Oil-less, direct-drive, single-stage
MOTOR 3,400 RPM
POWER 120 V, 60 Hz, 12 A
WEIGHT 57 lb 3 oz
(26 kg)
POWER CORD SJT 16 AWG / 72" (1.83 m)
EXTENSION CORD SJT 12 AWG / Maximum 30' (9.1 m)

SAFETY GUIDELINES
4
8U.S. GALLONS (30.3 L) AIR COMPRESSOR 058-9316-0
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 the user needs to know
about the tool.
SAFETY RECOMMENDATIONS
These precautions are intended for the personal safety of the user and others working with the user.
Failure to follow these instructions may result in a permanent loss of vision, serious personal or even
fatal injury, property damage, and/or tool damage. 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
8U.S. GALLONS (30.3 L) AIR COMPRESSOR 058-9316-0
DANGER!
Potential hazard that will result in serious injury or loss of life.
•Risk of fire or explosion: Do not spray a flammable or combustible liquid or
paint near sparks, flames, pilot lights or in a confined area. The spray area
must be well-ventilated. Keep compressor at least 20’ (6 m) away from
spray area. Do not carry and operate the compressor or any other electrical
device near the spray area. Never smoke when spraying. Use a minimum of
25’
(7.6 m) of hose to connect a spray gun to the compressor.
•Risk of electric shock: Do not expose to rain. Store the compressor indoors.
Hazardous voltage. Disconnect from power source before servicing.
Compressor must be grounded. Do not use grounding adaptors.
•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
spray gun or tool. Before starting the compressor, pull the ring on the safety
valve to make sure the valve moves freely (see diagram on page 20). Drain
water from tank after each use. Do not weld or repair tank.
•Risk of personal injury: Never spray the compressed air or material at self or
others.
•Risk of bursting: Check the maximum pressure rating in the manual or
identification label. The compressor outlet pressure must be regulated so
that it does not exceed the maximum pressure rating. Relieve all pressure in
the hose before removing or attaching accessories.
•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.

SAFETY GUIDELINES
6
8U.S. GALLONS (30.3 L) AIR COMPRESSOR 058-9316-0
•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 to breathing: Be certain to read all labels when you are spraying paints
or toxic materials, and follow all safety instructions. Use a respirator mask if
there is a chance of inhaling anything you are spraying. Also, NEVER directly
inhale the air produced by a compressor.
•Risk of eye injury: Wear ANSI Z87.1 approved safety goggles when using an
air compressor. Do not point any nozzle or sprayer toward a person or any
part of the body. Serious injury may occur if the spray penetrates the skin.
WARNING!
Potential hazard that could result in serious injury or loss of life.
• Pull the pressure safety valve ring every day in order to
ensure that the valve is functioning properly.

SAFETY GUIDELINES
7
8U.S. GALLONS (30.3 L) AIR COMPRESSOR 058-9316-0
• The compressor must be located in a well-ventilated area for cooling, and
must be 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 an 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.
• Do not exceed the tool’s maximum working pressure.
• Do not attempt to open the drain valve when there is more than 10 PSI of
air pressure in the tank.
WARNING!
Potential hazard that could result in serious injury or loss of life.

SAFETY GUIDELINES
8
8U.S. GALLONS (30.3 L) AIR COMPRESSOR 058-9316-0
Extension cords
As the distance from the supply outlet increases, you must use a heavier gauge extension cord.
Using extension cords with inadequately sized wire causes a serious drip in voltage, resulting in loss
of power and possible product damage. Refer to the table to determine the required minimum wire
size.
Recommended Minimum Wire Gauge for Extension Cords* (120 V)
* Based on limiting the line voltage drop to five volts at 150% of the rated amperes.
The smaller the gauge number of the wire, the greater the capacity of the cord. For example, a
14-gauge cord can carry a higher current than a 16-gauge cord. When using more than one
extension cord to make up the total length, be sure each cord contains at least the minimum wire
size required.
Guidelines for using extension cords
• If you are using an extension cord outdoors, be sure it is marked with the suffix "W-A" ("W"
in Canada) to indicate it is acceptable for outdoor use.
• Ensure your extension cord is properly wired and in good electrical condition. Always replace a
damaged extension cord or have it repaired by a qualified technician before using it.
• Protect your extension cords from sharp objects, excess heat and damp or wet areas.
AMPERE
RATING
CORD SIZE IN AWG (AMERICAN WIRE GAUGE)
Extension cord length in feet
25' 50' 75' 100' 150' 200'
0 -5161616141212
5.1-81616141210–
8.1 -12 14 14 12 10 – –
12.1 -15 12 12 10 10 – –
15.1 -20 10 10 10 – – –

KEY PARTS DIAGRAM
9
8U.S. GALLONS (30.3 L) AIR COMPRESSOR 058-9316-0
No. Description No. Description
1 Air tank 7 Outlet pressure gauge
2 Air tank drain valve 8 Tank pressure gauge
3 Power cord 9 Pressure switch
4 Air outlet 10 Electric motor
5 Air pressure regulator 11 Air compressor pump
6 Safety valve
MC-589316-07
1
2
3
4
5
67
8
910 11

IMPORTANT INFORMATION
10
8U.S. GALLONS (30.3 L) AIR COMPRESSOR 058-9316-0
This Mastercraft®Air Compressor is ideal for a wide range of applications, from fastening to
greasing and engine cleaning. The 8-gallon (30.3 L) design provides optimum pressure. It features a
1.5 HP induction motor for quiet operation and a cast-iron, oil-free pump for long-lasting, reliable
performance.
The procedures described in this manual are solely for this 8-gallon
(30.3 L) air compressor at a
maximum of P=135 PSI. The device has been designed / constructed for household use only.
Compatible compressor and air tool -proper usage and operation
Always ensure the use of appropriately matched air tools with your Mastercraft®Air Compressor. Be
sure that the air compressor being used can supply the appropriate volume, pressure and delivery
rate of air to the tool(s) without running continuously. Using tools or combinations of tools that,
together or separately, require more than the air compressor can deliver will void the air compressor
guarantee/warranty.
Air compressor components
Electric motor
The motor is used to power the pump. It is equipped with at thermal overload protector. If the motor
overheats for any reason, the thermal overload protector will shut it down in order to prevent the
motor from being damaged.
Air compressor pump
The pump compresses the air and discharges it into the tank via the piston that moves up and down
in the cylinder.
WARNING!
Potential hazard that could result in serious injury or loss of life.
This air compressor is not designed for continuous operation or unlimited,
commercial operations and may be used in dry area only. This air compressor is
intended to be used in maximum 30-minute intervals and should rest for 30
minutes before used again. Do not exceed the maximum working time.

IMPORTANT INFORMATION
11
8U.S. GALLONS (30.3 L) AIR COMPRESSOR 058-9316-0
Pressure switch
This switch turns the compressor on and off. It is operated manually and when it is in the ON
position, it allows the motor to start if the pressure in the air tank is below the factory set cut-in
pressure, and allows the motor to stop if the pressure in the air tank reaches the factory set cut-out
pressure. Be sure to set this switch to the OFF position when the compressor is not being used and
before unplugging the compressor.
Safety valve
This valve is used to prevent system failure by draining pressure from the system when it reaches a
preset level if the pressure switch has not shut down the motor. It will pop open automatically, or it
can be activated manually by pulling the ring on the valve.
Air pressure regulator
The regulator is used to adjust the pressure inside the line to the tool that is being used. Turn the
knob clockwise to increase the pressure and counter-clockwise to decrease the pressure.
Tank pressure gauge
The gauge measures the pressure level of the air that is stored in the tank. It cannot be adjusted by
the operator and it does not indicate the pressure inside the line.
Outlet pressure gauge
The gauge measures the regulated outlet pressure.
Air outlet
The outlet is connected to the 1/4” (6.4 mm) NPT air hose.
Air tank drain valve
The drain valve is used to remove moisture from the air tank after the compressor is shut off.
Air tank
The tank is where the compressed air is stored.
Power cord
This compressor should be used on a nominal 120 V grounded circuit. Use a power cord that is
equipped with a grounding plug. Verify that the compressor is plugged into an outlet that has the
same configuration as the plug. Do not use an adaptor with this compressor.

IMPORTANT INFORMATION
12
8U.S. GALLONS (30.3 L) AIR COMPRESSOR 058-9316-0
Tool Compatibility Chart
Inflation/Recreation
Air tool Operates Tool
Continuously
Operates Tool
Intermittently Not Recommended
Finishing Nailer (16-gauge)
Framing Nailer
Flooring Nailer
Die Grinder
Angle Grinder
Air Ratchet
Cut-off Tool
DIY Paint Sprayer
Brad Nailer (18-gauge)
3-in-1 Brad/Finishing/Stapler
Roofing Nailer
Impact Wrench
Drill
Hammer
Chisel
Shears
Sander
Polisher
Grease/Caulking Gun
Tool Compatibility Chart

ASSEMBLY INSTRUCTIONS
13
8U.S. GALLONS (30.3 L) AIR COMPRESSOR 058-9316-0
Assembly
• Unpack the air compressor unit. Inspect the unit for damage. If the unit has been damaged,
contact the retailer immediately.
• Check the air compressor’s identification label to ensure that you have purchased the intended
model and that it has the required pressure rating for its intended use.
Packaging contents
Description Qty. Illustration
Air compressor 1
Owner’s manual 1
Air filter 1
Removable handle 1
Thumbscrews 1
Wheel kit 1

ASSEMBLY INSTRUCTIONS
14
8U.S. GALLONS (30.3 L) AIR COMPRESSOR 058-9316-0
Tools required for assembly (not included):
Wheel kit Qty. Illustration
Axle 2
Wheel 2
Washer 2
Lock washer 2
Nut 2
Accessory Qty. Illustration
11/16" open end wrench or 1
Adjustable wrench 1

ASSEMBLY INSTRUCTIONS
15
8U.S. GALLONS (30.3 L) AIR COMPRESSOR 058-9316-0
Positioning of the air compressor
1. Position the air compressor (1) near an
electrical outlet (2)
(fig A) .
2. The compressor must be at least 12"
(31 cm) from any wall (3) or obstruction,
in a clean, well-ventilated area to ensure
sufficient air flow and cooling
(fig A).
3. Place the air compressor on the floor or
a hard, level surface. The air compressor
must be level to ensure proper drainage
of the moisture in the tank.
Wheel assembly
4. Insert the axle (1) through one of the
wheels
(fig B) .
5. Insert axle (1) through the bracket on the
bottom of the tank assembly. Slide on
washer (2), lock washer (3) and tighten
the nut (4)
(fig B) .
6. Once assembled, roll the air compressor
to test the operation of the wheels.
Periodically check to ensure that wheel
and axle hardware is secure
(fig B) .
Air filter assembly
7. Screw the air filter (1) onto the pump
(fig C).
Removable handle assembly
8. Insert handle into the fixed steel sleeves.
Align the tapped holes (1) with the holes
on the steel sleeve
(fig D) .
9. Fasten the handle to the sleeves using
the thumbscrews (2)
(fig D) .
MC-589316-09
fig A 2
3
1
MC-589316-10
fig B
1
2
3
4
MC-589316-11
fig C
1
MC-589316-12
fig D 2
1

OPERATING INSTRUCTIONS
16
8U.S. GALLONS (30.3 L) AIR COMPRESSOR 058-9316-0
Break-in procedure
1. Set the pressure switch (1) to the OFF
position
(fig E) .
2. Open the tank drain valve (1) by turning
it counter-clockwise to permit the air to
escape and prevent air pressure build-up
in the air tank during the break-in period
(fig F) .
3. Turn the air pressure regualtor knob (1)
counter-clockwise until it stops
(fig G) .
4. Plug in the power cord (1)
(fig H) .
Note: For best performance and reliable
starting, the air compressor should be plugged
into a dedicated circuit, as close as possible to
the fuse box or circuit breaker.
Note: A circuit breaker is recommended. If the
air compressor is connected to a circuit
protected by a fuse, use dual element time
delay fuses (type “T” only).
MC-589316-13
fig E 1
MC-589316-14
fig F
1
MC-589316-15
fig G 1
MC-589316-16
fig H
1