Craftsman 919.167370 User manual

Owner’s Manual
Permanently Lubricated
Tank Mounted
AIR COMPRESSOR
• Safety Guidelines
• Assembly
• Operation
• Maintenance
• Service and Adjustments
• Troubleshooting
• Repair Parts
Model No.
919.167370
CAUTION: Read the Safety Guidelines
and All Instructions Carefully Before
Operating.
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
Visit our Craftsman website: www.sears.com/craftsman
N000317 Rev. 0 11/14/07

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N000317
TABLE OF CONTENTS
WARRANTY
WARRANTY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SPECIFICATION CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SAFETY GUIDELINES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
GLOSSARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
DUTY CYCLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-12
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-15
MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SERVICE AND ADJUSTMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-18
STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-21
REPAIR PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-25
ESPAÑOL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-46
REPAIR PROTECTION AGREEMENTS . . . . . . . . . . . . . . . . . . . . . . . . . 47
HOW TO ORDER REPAIR PARTS . . . . . . . . . . . . . . . . . . . . . . back cover
FULL ONE YEAR WARRANTY AIR COMPRESSOR
If this CRAFTSMAN Air Compressor fails due to a defect in material or
workmanship within one year from the date of purchase, Sears will at
its option repair or replace it free of charge. Contact your nearest Sears
Service Center (1-800-4-MY-HOME®) to arrange for repair, or return the Air
Compressor to the place of purchase for replacement.
If this Air Compressor is used for commercial or rental purposes, this warranty
applies for only ninety days from the date of purchase.
This warranty gives you specific legal rights and you may have other rights
which vary from state to state.
Sears, Roebuck and Co., Dept. 817WA, Hoffman Estates, IL 60179

3- ENG N000317
Model No. 919-167370
Running HP *1.1
Bore 1-7/8"
Stroke 1-1/4"
Voltage-Single Phase 120V
Minimum Branch Circuit Requirement 15 amps
Fuse Type Time Delay
Air Tank Capacity 17
Approx. Cut-In 120
Approx. Cut-out 150
*SCFM @ 40 psig 4.3
*SCFM @ 90 psig 3.3
*(Tested per ISO 1217)
SPECIFICATION CHART
Refer to Glossary for abbreviations.
SAFETY GUIDELINES - DEFINITIONS
This manual contains information that is important for you to know and under-
stand. This information relates to protecting YOUR SAFETY and PREVENTING
EQUIPMENT PROBLEMS. To help you recognize this information, we use the
symbols below. Please read the manual and pay attention to these symbols.
Indicates an
imminently
hazardous situation which, if not
avoided, will result in death or
serious injury.
Indicates a
potentially
hazardous situation which, if not
avoided, may result in minor or
moderate injury.
Indicates a
potentially
hazardous situation which, if not
avoided, could result in death or
serious injury.
Used without the
safety alert symbol
indicates a potentially hazardous
situation which, if not avoided, may
result in property damage.
IMPORTANT SAFETY INSTRUCTIONS
Some dust created by power sanding, sawing, grinding,
drilling, and other construction activities contains chemicals
known to the State of California to cause cancer, birth defects or other
reproductive harm. Some example of these chemicals are:
• crystalline silica from bricks and cement and other masonry products
• arsenic and chromium from chemically-treated lumber
Your risk from these exposures varies, depending on how often you do this
type of work. To reduce your exposure to these chemicals: work in a well
ventilated area, and work with approved safety equipment, always wear
OSHA/MSHA/NIOSH approved, properly fitting face mask or respirator
when using such tools.
When using air tools, basic safety precautions should always be followed to
reduce the risk of of personal injury.

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N000317
This product contains chemicals, including lead, known to
the State of California to cause cancer, and birth defects or
other reproductive harm. Wash hands after handling.
Do not operate this unit until you read and
understand this instruction manual for safety,
operation and maintenance instructions.
SAVE THESE INSTRUCTIONS
HAZARD
RISK OF EXPLOSION OR FIRE
WHAT CAN HAPPEN HOW TO PREVENT IT
• It is normal for electrical contacts
within the motor and pressure
switch to spark.
• Always operate the compressor in a
well ventilated area free of combus-
tible materials, gasoline, or solvent
vapors.
• If electrical sparks from compressor
come into contact with flammable
vapors, they may ignite, causing fire
or explosion.
• If spraying flammable materials,
locate compressor at least 20 feet
(6.1 m) away from spray area. An
additional length of air hose may be
required.
• Store flammable materials in a
secure location away from com-
pressor.
• Restricting any of the compressor
ventilation openings will cause seri-
ous overheating and could cause
fire.
• Never place objects against or on
top of compressor.
• Operate compressor in an open
area at least 12" (304.8 mm) away
from any wall or obstruction that
would restrict the flow of fresh air to
the ventilation openings.
• Operate compressor in a clean, dry
well ventilated area. Do not oper-
ate unit in any confined area. Store
indoors.
• Unattended operation of this prod-
uct could result in personal injury
or property damage. To reduce the
risk of fire, do not allow the com-
pressor to operate unattended.
• Always remain in attendance with
the product when it is operating.
• Always turn off and unplug unit
when not in use.

5- ENG N000317
HAZARD
RISK TO BREATHING (ASPHYXIATION)
WHAT CAN HAPPEN HOW TO PREVENT IT
• The compressed air directly from
your compressor is not safe for
breathing. The air stream may con-
tain carbon monoxide, toxic vapors,
or solid particles from the air tank.
Breathing these contaminant's can
cause serious injury or death.
• Air obtained directly from the com-
pressor should never be used to
supply air for human consumption.
In order to use air produced by this
compressor for breathing, suitable
filters and in-line safety equipment
must be properly installed. In-line
filters and safety equipment used
in conjunction with the compressor
must be capable of treating air to all
applicable local and federal codes
prior to human consumption.
• Sprayed materials such as paint,
paint solvents, paint remover, insec-
ticides, weed killers, may contain
harmful vapors and poisons.
• Work in an area with good cross
ventilation. Read and follow the
safety instructions provided on the
label or safety data sheets for the
materials you are spraying. Always
use certified safety equipment:
OSHA/MSHA/NIOSH respiratory
protection designed for use with
your specific application.
HAZARD
RISK OF BURSTING
Air Tank: The air tank on your Air Compressor is designed and may be UM coded
(for units with air tanks greater than 6 inch diameter) according to ASME Section VIII,
Div. 1 rules. All pressure vessels should be inspected once every two years. To find
your state pressure vessels inspector, look under the Division of Labor and Industries
in the government section of a phone book .
The following conditions could lead to a weakening of the air tank, and result in a
violent air tank explosion:
WHAT CAN HAPPEN HOW TO PREVENT IT
• Failure to properly drain condensed
water from air tank, causing rust
and thinning of the steel air tank.
• Drain air tank daily or after each
use. If air tank develops a leak,
replace it immediately with a new air
tank or replace the entire compres-
sor.
• Modifications or attempted repairs
to the air tank.
• Never drill into, weld, or make any
modifications to the air tank or its
attachments. Never attempt to
repair a damaged or leaking air
tank. Replace with a new air tank.

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• Unauthorized modifications to the
safety valve or any other compo-
nents which control air tank pres-
sure.
• The air tank is designed to with-
stand specific operating pressures.
Never make adjustments or parts
substitutions to alter the factory set
operating pressures.
Attachments & accessories:
• Exceeding the pressure rating of
air tools, spray guns, air operated
accessories, tires, and other inflata-
bles can cause them to explode or
fly apart, and could result in serious
injury.
• Follow the equipment manufactur-
ers recommendation and never
exceed the maximum allowable
pressure rating of attachments.
Never use compressor to inflate
small low pressure objects such as
children’s toys, footballs, basket-
balls, etc.
Tires:
• Over inflation of tires could result in
serious injury and property damage. • Use a tire pressure gauge to check the tires pressure before each use
and while inflating tires; see the tire
sidewall for the correct tire pressure.
NOTE: Air tanks, compressors and simi-
lar equipment used to inflate tires can fill
small tires similar to these very rapidly.
Adjust pressure regulator on air supply to
no more than the rating of the tire pres-
sure. Add air in small increments and
frequently use the tire gauge to prevent
over inflation.
HAZARD
RISK OF ELECTRICAL SHOCK
WHAT CAN HAPPEN HOW TO PREVENT IT
• Your air compressor is powered by
electricity. Like any other electrically
powered device, If it is not used
properly it may cause electric
shock.
• Never operate the compressor
outdoors when it is raining or in wet
conditions.
• Never operate compressor with
protective covers removed or
damaged.
• Repairs attempted by unqualified
personnel can result in serious
injury or death by electrocution.
• Any electrical wiring or repairs
required on this product should be
performed by authorized service
center personnell in accordance
with national and local electrical
codes.
• Electrical Grounding: Failure to
provide adequate grounding to
this product could result in serious
injury or death from electrocution.
Refer to "Grounding Instructions"
paragraph in the "Installation"
section.
• Make certain that the electrical
circuit to which the compressor
is connected provides proper
electrical grounding, correct voltage
and adequate fuse protection.

7- ENG N000317
HAZARD
RISK FROM FLYING OBJECTS
WHAT CAN HAPPEN HOW TO PREVENT IT
• The compressed air stream can
cause soft tissue damage to
exposed skin and can propel dirt,
chips, loose particles, and small
objects at high speed, resulting in
property damage or personal injury.
• Always wear certified safety equip-
ment: ANSI Z87.1 eye protection
(CAN/CSA Z94.3) with side shields
when using the compressor.
• Never point any nozzle or sprayer
toward any part of the body or at
other people or animals.
• Always turn the compressor off
and bleed pressure from the air
hose and air tank before attempt-
ing maintenance, attaching tools or
accessories.
HAZARD
RISK OF HOT SURFACES
WHAT CAN HAPPEN HOW TO PREVENT IT
• Touching exposed metal such as
the compressor head, engine head,
engine exhaust or outlet tubes, can
result in serious burns.
• Never touch any exposed metal
parts on compressor during or
immediately after operation.
Compressor will remain hot for
several minutes after operation.
• Do not reach around protective
shrouds or attempt maintenance
until unit has been allowed to cool.
HAZARD
RISK FROM MOVING PARTS
WHAT CAN HAPPEN HOW TO PREVENT IT
• Moving parts such as the pulley, fly-
wheel, and belt can cause serious
injury if they come into contact with
you or your clothing.
• Never operate the compressor with
guards or covers which are dam-
aged or removed.
• Keep your hair, clothing, and gloves
away from moving parts. Loose
clothes, jewelry, or long hair can be
caught in moving parts.
• Air vents may cover moving parts
and should be avoided as well.
• Attempting to operate compressor
with damaged or missing parts or
attempting to repair compressor
with protective shrouds removed
can expose you to moving parts
and can result in serious injury.
• Any repairs required on this product
should be performed by autHorized
service center personnell.

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HAZARD
RISK OF UNSAFE OPERATION
WHAT CAN HAPPEN HOW TO PREVENT IT
• Unsafe operation of your air com-
pressor could lead to serious injury
or death to you or others.
• Review and understand all instruc-
tions and warnings in this manual.
• Become familiar with the operation
and controls of the air compressor.
• Keep operating area clear of all per-
sons, pets, and obstacles.
• Keep children away from the air
compressor at all times.
• Do not operate the product when
fatigued or under the influence of
alcohol or drugs. Stay alert at all
times.
• Never defeat the safety features of
this product.
• Equip area of operation with a fire
extinguisher.
• Do not operate machine with miss-
ing, broken, or unauthorized parts.
HAZARD
RISK FROM NOISE
WHAT CAN HAPPEN HOW TO PREVENT IT
• Under some conditions and dura-
tion of use, noise from this product
may contribute to hearing loss.
• Always wear certified safety equip-
ment: ANSI S12.6 (S3.19) hearing
protection.
SAVE THESE INSTRUCTIONS
FOR FUTURE USE

9- ENG N000317
GLOSSARY
ACCESSORIES
Become familiar with these terms before operating the unit.
CFM: Cubic feet per minute.
SCFM: Standard cubic feet per minute; a unit of measure of air delivery.
PSIG: Pounds per square inch gauge; a unit of measure of pressure.
Code Certification: Products that bear one or more of the following marks: UL,
CUL, ETL, CETL, have been evaluated by OSHA certified independent safety
laboratories and meet the applicable Underwriters Laboratories Standards for
Safety.
Cut-In Pressure: While the motor is off, air tank pressure drops as you
continue to use your accessory. When the tank pressure drops to a certain low
level the motor will restart automatically. The low pressure at which the motor
automatically restarts is called "cut-in" pressure.
Cut-Out Pressure: When an air compressor is turned on and begins to run,
air pressure in the air tank begins to build. It builds to a certain high pressure
before the motor automatically shuts off, protecting your air tank from pressure
higher than its capacity. The high pressure at which the motor shuts off is
called "cut-out" pressure.
Branch Circuit: Circuit carrying electricity from electrical panel to outlet.
DUTY CYCLE
This air compressor pump is capable of running continuously. However, to
prolong the life of your air compressor, it is recommended that a 50%-75%
average duty cycle be maintained; that is, the air compressor pump should not
run more than 30-45 minutes in any given hour.
This unit is capable of powering the following Accessories. The accessories are
available through the current Power and Hand Tool Catalog or full-line Sears
stores.
Accessories
• In Line Filter
• Tire Air Chuck
• Quick Connector Sets (various
sizes)
• Air Pressure Regulators
• Oil Fog Lubricators
• Air Hose: 1/4", 3/8" or 1/2" I.D. in
various lengths
Refer to the selection chart located
on the unit to select the tools this unit
is capable of powering.

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N000317
IMPORTANT: The outlet being used
must be installed and grounded in
accordance with all local codes and
ordinances.
2. Make sure the outlet being used
has the same configuration
as the grounded plug. DO
NOT USE AN ADAPTER. See
illustration.
3. Inspect the plug and cord before
each use. Do not use if there are
signs of damage.
4. If these grounding instructions
are not completely understood,
or if in doubt as to whether
the compressor is properly
grounded, have the installation
checked by a qualified
electrician.
Risk of Electrical
Shock. Improper
grounding can result in electrical
shock.
Do not modify the plug provided. If
it does not fit the available outlet,
a correct outlet should be installed
by a qualified electrician.
Repairs to the cord set or plug
MUST be made by a qualified
electrician.
INSTALLATION
GROUNDING INSTRUCTIONS
Risk of Electrical
Shock. In the
event of a short circuit, grounding
reduces the risk of shock by
providing an escape wire for
the electric current. This air
compressor must be properly
grounded.
The portable air compressor is
equipped with a cord having a
grounding wire with an appropriate
grounding plug (see following
illustrations). The plug must be used
with an outlet that has been installed
and grounded in accordance with all
local codes and ordinances.
1. The cord set and plug with this
unit contains a grounding pin.
This plug MUST be used with a
grounded outlet.
HOW TO SET UP YOUR UNIT
Location of the Air Compressor
Locate the air compressor in a
clean, dry and well ventilated area.
The air compressor should be
located at least 12" away from the
wall or other obstructions that will
interfere with the flow of air. The
air compressor pump and shroud
are designed to allow for proper
cooling. The ventilation openings
on the compressor are necessary
to maintain proper operating
temperature. Do not place rags or
other containers on or near these
openings.
Grounding Pin
Grounded
Outlets
Plug
ASSEMBLY
Unpacking
1. Remove unit from carton and
discard all packaging.

11- ENG N000317
Extension Cords
Using extension cords is not
recommended. The use of extension
cords will cause voltage to drop
resulting in power loss to the motor
and overheating.
Instead of using an extension cord,
increase the working reach of the
air hose by attaching another length
of hose to its end. Attach additional
lengths of hose as needed.
If an extension cord must be used,
be sure it is:
• a 3-wire extension cord that has
a 3-blade grounding plug, and a
3-slot receptacle that will accept
the plug on the product
• in good condition
• no longer than 50 feet
• 12 gauge (AWG) or larger. (Wire
size increases as gauge number
decreases. 10 AWG and 8 AWG
may also be used. DO NOT USE
14 OR 16 AWG.)
Voltage and Circuit Protection
Refer to the specification chart for the
voltage and minimum branch circuit
requirements.
Risk of Unsafe
Operation. Certain
air compressors can be operated
on a 15 amp circuit if the following
conditions are met.
1. Voltage supply to circuit must
comply with the National
Electrical Code.
2. Circuit is not used to supply any
other electrical needs.
3. Extension cords comply with
specifications.
4. Circuit is equipped with a
15 amp circuit breaker or 15
amp time delay fuse. NOTE: If
compressor is connected to a
circuit protected by fuses, use
only time delay fuses. Time delay
fuses should be marked "D" in
Canada and "T" in the US.
If any of the above conditions
cannot be met, or if operation of
the compressor repeatedly causes
interruption of the power, it may be
necessary to operate it from a 20
amp circuit. It is not necessary to
change the cord set.

12- ENG
N000317
Outlet Pressure Gauge: The outlet
pressure gauge indicates the air
pressure available at the outlet side
of the regulator. This pressure is
controlled by the regulator and is
always less than or equal to the tank
pressure.
Tank Pressure Gauge: The tank
pressure gauge indicates the reserve
air pressure in the tank.
Regulator: Controls the air pressure
shown on the outlet pressure
gauge. Pull the knob out and turn
clockwise to increase pressure
and counterclockwise to decrease
pressure. When the desired pressure
is reached push knob in to lock in
place.
Universal Quick-Connect Body:
The universal quick-connect body
accepts the three most popular styles
of quick-connect plugs- Industrial,
automotive (Tru-flate), and ARO. One
hand push-to-connect operation
makes connections simple and easy.
Description of Operation
Become familiar with these controls
before operating the unit.
On/Auto/Off Switch: Turn this switch
"ON/AUTO" to provide automatic
power to the pressure switch and
"OFF" to remove power at the end of
each use.
Pressure Switch: The pressure
switch automatically starts the
motor when the air tank pressure
drops below the factory set "cut-in"
pressure. It stops the motor when the
air tank pressure reaches the factory
set "cut-out" pressure.
Safety Valve: If the pressure switch
does not shut off the air compressor
at its "cut-out" pressure setting, the
safety valve will protect against high
pressure by "popping out" at its
factory set pressure (slightly higher
than the pressure switch "cut-out"
setting).
OPERATION
Know Your Air Compressor
READ THIS OWNER’S MANUAL AND SAFETY RULES BEFORE OPERATING
YOUR UNIT. Compare the illustrations with your unit to familiarize yourself with
the location of various controls and adjustments. Save this manual for future
reference.
Outlet
Pressure Gauge
Universal
Quick
Connect
Body
Safety
Valve
Tank
Pressure Gauge
Regulator

13- ENG N000317
Drain Valve: The drain valve is
located at the base of the air tank
and is used to drain condensation at
the end of each use.
Cooling System (not shown): This
compressor contains an advanced
design cooling system. At the heart of
this cooling system is an engineered
fan. It is perfectly normal for this fan
to blow air through the vent holes
in large amounts. You know that the
cooling system is working when air is
being expelled.
Air Compressor Pump (not shown):
Compresses air into the air tank.
Working air is not available until the
compressor has raised the air tank
pressure above that required at the
air outlet.
Check Valve: When the air
compressor is operating, the check
valve is "open", allowing compressed
air to enter the air tank. When the
air compressor reaches "cut-out"
pressure, the check valve "closes",
allowing air pressure to remain inside
the air tank.
Before Starting
Break-in Procedure
Risk of Unsafe
Operation. Serious
damage may result if the following
break-in instructions are not
closely followed.
This procedure is required before the
air compressor is put into service and
when the check valve or a complete
compressor pump has been replaced.
1. Make sure the On/Auto/Off lever
is in the "OFF" position.
NOTE: Pull coupler back until it clicks
to prevent air from escaping through
the quick connect.
2.
Plug the power cord into the
correct branch circuit receptacle.
(Refer to Voltage and Circuit
Protection paragraph in the
Installation section of this
manual.)
3. Open the drain valve fully
(counter-clockwise) to permit
air to escape and prevent air
pressure build up in the air tank
during the break-in period.
4. Move the On/Auto/Off lever
to "ON/AUTO" position. The
compressor will start.
5. Run the compressor for 15
minutes. Make sure the drain
valve is open and there is
minimal air pressure build-up in
tank.
6. After 15 minutes, close the drain
valve (clockwise). The air receiver
will fill to "cut-out" pressure and
the motor will stop.
The compressor is now ready for use.
How to Use Your Unit
How to Stop:
1. Set the On/Auto/Off lever to
"OFF".
Check Valve
Drain
Valve

14- ENG
N000317
How to Start:
1. Turn the On/Auto/Off lever to
"ON/AUTO" and allow tank
pressure to build. Motor will
stop when tank pressure reaches
"cut-out" pressure.
2. Pull the regulator knob out
and turn clockwise to increase
pressure. When the desired
pressure is reached push knob in
to lock in place.
The compressor is ready for use.
Before Each Start-Up:
1. Place On/Auto/Off lever to
"OFF" and close air regulator.
2. Pull regulator knob out, turn
counterclockwise until it stops.
Push knob in to lock in place.
3. Attach hose and accessories.
NOTE: The hose or accessory
will require a quick connect plug
if the air outlet is equipped with a
quick connect socket.
Risk of Bursting.
Too much air
pressure causes a hazardous
risk of bursting. Check the
manufacturer’s maximum pressure
rating for air tools and accessories.
The regulator outlet pressure
must never exceed the maximum
pressure rating.

15- ENG N000317
MAINTENANCE
Customer Responsibilities
Daily
or after
each
use
Before
each
use
●
●
Check Safety Valve
Drain Tank
NOTE: See Operation section for the
location of controls.
Risk of Unsafe
Operation. Unit
cycles automatically when power
is on. When servicing, you may
be exposed to voltage sources,
compressed air, or moving parts.
Before servicing unit unplug or
disconnect electrical supply to
the air compressor, bleed tank
of pressure, and allow the air
compressor to cool.
To Check Safety Valve
Risk of Bursting.
If the safety valve
does not work properly, over-
pressurization may occur, causing
air tank rupture or an explosion.
1. Before starting compressor, pull
the ring on the safety valve to
make sure that the safety valve
operates freely. If the valve
is stuck or does not operate
smoothly, it must be replaced
with the same type of valve.
To Drain Tank
1. Set the On/Auto/Off lever to
"OFF" and unplug unit.
2. Pull the regulator knob out and
turn counterclockwise to set the
outlet pressure to zero.
3. Remove the air tool or accessory.
4. Pull ring on safety valve allowing
air to bleed from the tank until
tank pressure is approximately
20 psi. Release safety valve ring.
5. Drain water from air tank by
opening drain valve (counter-
clockwise) on bottom of tank.
Risk of Bursting.
Water will
condense in the air tank. If not
drained, water will corrode and
weaken the air tank causing a risk
of air tank rupture.
6. After the water has been drained,
close the drain valve (clockwise).
The air compressor can now be
stored.
NOTE: If drain valve is plugged,
release all air pressure. The valve
can then be removed, cleaned, the
reinstalled.

16- ENG
N000317
4. Unscrew the check valve (turn
counterclockwise) using a socket
wrench.
5. Make sure the valve disc moves
freely inside the check valve
and the spring holds the disc in
the upper, closed position. The
check valve may be cleaned
with a solvent, such as paint and
varnish remover.
6. Apply sealant to the check valve
threads. Reinstall the check valve
(turn clockwise).
7. Replace the outlet tube and
tighten the nut.
8. Perform the Break-in Procedure.
See "Break-in Procedure" in the
Operation section.
SERVICE AND ADJUSTMENTS
ALL MAINTENANCE AND REPAIR
OPERATIONS NOT LISTED MUST
BE PERFORMED BY TRAINED
SERVICE TECHNICIAN.
In closed position
disc is visible.
In open
position
nothing is
visible.
Screwdriver
To Replace or Clean Check
Valve
1. Release all air pressure from air
tank. See "To Drain Tank" in the
Maintenance section.
2. Set the On/Auto/Off lever to
"OFF" and unplug unit.
3. Loosen the nut on the outlet tube
and move the outlet tube to the
side.
Outlet Tube
Check
Valve
Nut
Risk of Unsafe
Operation. Unit
cycles automatically when power
is on. When servicing, you may
be exposed to voltage sources,
compressed air, or moving parts.
Before servicing unit unplug or
disconnect electrical supply to
the air compressor, bleed tank
of pressure, and allow the air
compressor to cool.

17- ENG N000317
5. Using an adjustable wrench or
5/8" wrench remove the regulator
manifold.
6. Apply pipe sealant to new
regulator manifold and assemble,
tighten with wrench.
7. Reapply pipe sealant to gauges,
quick connect, and safety valve.
8. Reassemble all components in
reverse order of removal. Make
sure to orient gauges to read
correctly and use wrenches to
tighten all components.
To Replace Regulator
1. Release all air pressure from air
tank. See "To Drain Tank" in the
Maintenance section.
2. Unplug unit.
3. Using an adjustable wrench or
specified wrench remove the
gauges (7/16" wrench), quick
connect (13/16" wrench), and
safety valve (9/16" wrench) from
the regulator manifold.
4. Remove the hose by removing
the hose clamp. NOTE: The hose
clamp is not reusable. You must
purchase a new hose clamp, see
the Parts List Manual or purchase
a standard hose clamp at a local
hardware store.
Regulator
Manifold
Hose Clamp
Gauges
Regulator
Manifold
Quick
Connect
Safety Valve

18- ENG
N000317
STORAGE
Before you store the air compressor,
make sure you do the following:
1. Review the Maintenance section
on the preceding pages and
perform scheduled maintenance
as necessary.
2. Set the On/Auto/Off lever to
"OFF" and unplug unit.
3. Turn the regulator
counterclockwise and set the
outlet pressure to zero.
4. Remove the air tool or accessory.
5. Pull ring on safety valve allowing
air to bleed from the tank until
tank pressure is approximately
20 psi. Release safety valve ring.
6. Drain water from air tank by
opening drain valve on bottom of
tank.
Risk of Bursting.
Water will
condense in the air tank. If not
drained, water will corrode and
weaken the air tank causing a risk
of air tank rupture.
7. After the water has been drained,
close the drain or drain valve.
NOTE: If drain valve is plugged,
release all air pressure. The valve
can then be removed, cleaned, then
reinstalled.
8. Protect the electrical cord and
air hose from damage (such as
being stepped on or run over).
Wind them loosely around
the compressor handle. (If so
equipped)
9. Store the air compressor in a
clean and dry location.

19- ENG N000317
TROUBLESHOOTING
PROBLEM CAUSE CORRECTION
Pressure switch does
not shut off motor when
compressor reaches "cut-
out" pressure.
Pressure switch "cut-out"
too high.
Move On/Auto/Off lever
to the "OFF" position, if
the outfit does not shut off
contact a Trained Service
Technician.
Contact a Trained Service
Technician.
Excessive tank
pressure - safety
valve pops off.
Tube fittings are not tight
enough.
Tighten fittings where air
can be heard escaping.
Check fittings with soapy
water solution. Do Not
Overtighten.
Air leaks at
fittings.
Air leaks in air
tank or at air
tank welds.
Defective air tank. Air tank must be replaced.
Do not repair the leak.
Risk of
Bursting.
Do not drill into, weld or
otherwise modify air tank
or it will weaken. The tank
can rupture or explode.
Air leaks
between head
and valve plate.
Leaking seal. Contact a Trained Service
Technician.
Possible defect in safety
valve.
Operate safety valve
manually by pulling on ring.
If valve still leaks, it should
be replaced.
Air leak from
safety valve.
Possible defect in safety
valve.
Operate safety valve
manually by pulling on ring.
If valve still leaks, it should
be replaced.
Knocking Noise.
Risk of Unsafe Operation. Unit cycles automatically when
power is on. When servicing, you may be exposed to
voltage sources, compressed air, or moving parts. Before servicing unit
unplug or disconnect electrical supply to the air compressor, bleed tank
of pressure, and allow the air compressor to cool.

20- ENG
N000317
Regulator will
not shut off air
outlet.
Damaged regulator. Replace.
PROBLEM CAUSE CORRECTION
It is normal for "some"
pressure drop to occur.
If there is an excessive
amount of pressure drop
when the accessory is used,
adjust the regulator following
the instructions in the
"Description of Operation"
paragraph in the Operation
Section.
NOTE: Adjust the regulated
pressure under flow
conditions (while accessory is
being used).
Compressor is
not supplying
enough air
to operate
accessories.
Prolonged excessive use of
air.
Compressor is not large
enough for air requirement.
Hole in hose.
Check valve restricted.
Air leaks.
Decrease amount of air
usage.
Check the accessory
air requirement. If it is
higher than the SCFM or
pressure supplied by your
air compressor, you need a
larger compressor.
Check and replace if
required.
Remove and clean, or
replace.
Tighten fittings.
Damaged regulator. Replace.
Regulator knob
has continuous
air leak.
Pressure reading
on the regulated
pressure gauge
drops when an
accessory is
used.