Craftsman 919.195400 User manual

D22171 Rev. 0 12/22/00
Operators Manual
CAUTION: Read the Safety Guidelines
and All Instructions Carefully Before
Operating.
Sears, Roebuck and Co., Hoffman Estates, IL 60170 U.S.A.
Visit our Craftsman website: www.sears.com/craftsman
Oil Lubricated
Single Stage
Portable
AIR COMPRESSOR
• Safety Guidelines
• Assembly
• Operation
• Maintenance
• Service and Adjustments
• Troubleshooting
• Español
Model No.
919.195400

2 - ENGD21879
TABLE OF CONTENTS
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
SAFETY GUIDELINES . . . . . . . . . . . . . . . . . . .3-6
GLOSSARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . .7
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Contents of Carton . . . . . . . . . . . . . . . . . . . . .7
Tools Required for Assembly . . . . . . . . . . . . . .7
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . .8
To Install Handles . . . . . . . . . . . . . . . . . . . . . .8
To Assemble Wheels . . . . . . . . . . . . . . . . . . . .9
To Add Oil to Pump . . . . . . . . . . . . . . . . . . . .9
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . .10
Location of Air Compressor . . . . . . . . . . . . .10
Grounding Instructions . . . . . . . . . . . . . . . . .10
Extension Cords . . . . . . . . . . . . . . . . . . . . . .10
Voltage and Circuit Protection . . . . . . . . . . . .10
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . .11-12
Know Your Air Compressor . . . . . . . . . . . . . .11
Description of Operation . . . . . . . . . . . . . . . .11
How to Use Your Unit . . . . . . . . . . . . . . . . . .12
How to Stop . . . . . . . . . . . . . . . . . . . . . . . . .12
Before Starting . . . . . . . . . . . . . . . . . . . . . . .12
Before Each Start-up . . . . . . . . . . . . . . . . . .12
How to Start . . . . . . . . . . . . . . . . . . . . . . . . .12
FULL ONE YEAR WARRANTY
AIR COMPRESSOR
If this air compressor fails due to a defect in material or workmanship within one year from the date of
purchase, RETURN IT TO THE NEAREST SEARS REPAIR CENTER THROUGHOUT THE UNITED STATES
AND SEARS WILL REPAIR IT, FREE OF CHARGE. If purchased from Orchard Supply Hardware, return to
the nearest Orchard Store and Orchard will repair it, free of charge.
If this air compressor is used for commercial or rental purposes, the warranty will apply for 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, Robebuck and Co., Deptr. 817WA, Hoffman Estates, Il 60170
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . .13-14
Customer Responsiblilities . . . . . . . . . . . . . .13
To Check Saety Valve . . . . . . . . . . . . . . . . . .13
To Drain Tank . . . . . . . . . . . . . . . . . . . . . . . .13
Oil
Check . . . . . . . . . . . . . . . . . . . . . . . . . .14
Change . . . . . . . . . . . . . . . . . . . . . . . . .14
Air Filter - Inspection and Replacement . . . . .14
Motor Pulley/Flywheel Alignment . . . . . . . . .14
Air Compressor Pump Intake and
Exhaust Valves . . . . . . . . . . . . . . . . . . . . . . .14
SERVICE AND ADJUSTMENTS . . . . . . . . . . . . .15
To Repalce or Clean Check Valve . . . . . . . . .15
Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
To Replace Regulator . . . . . . . . . . . . . . . . . .16
To Replace Belt . . . . . . . . . . . . . . . . . . . . . . .16
STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
TROUBLESHOOTING GUIDE . . . . . . . . . . . .18-21
ESPAÑOL . . . . . . . . . . . . . . . . . . . . . . . . . . .22-43
HOW TO ORDER REPAIR PARTS . . . .back cover

3 - ENG D22171
SAFETY GUIDELINES - DEFINITIONS
Indicates an imminently hazardous
situation which, if not avoided, will
result in death or serious injury.
Indicates a potentially hazardous sit-
uation which, if not avoided, could
result in death or serious injury.
Indicates a potentially hazardous
situation which, if not avoided, may
result in minor or moderate injury.
Used without the safety alert sym-
bol indicates a potentially haz-
ardous situation which, if not avoided, may result in
property damage.
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
IMPROPER OPERATION OR MAINTENANCE OF THIS PRODUCT COULD RESULT IN SERIOUS INJURY
AND PROPERTY DAMAGE. READ AND UNDERSTAND ALL WARNINGS AND OPERATING INSTRUC-
TIONS BEFORE USING THIS EQUIPMENT.
RISK OF EXPLOSION OR FIRE
ALWAYS OPERATE THE COMPRESSOR IN A WELL VEN-
TILATED AREA FREE OF COMBUSTIBLE MATERIALS,
GASOLINE OR SOLVENT VAPORS.
IF SPRAYING FLAMMABLE MATERIALS, LOCATE COM-
PRESSOR AT LEAST 20 FEET AWAY FROM SPRAY
AREA. AN ADDITIONAL LENGTH OF HOSE MAY BE
REQUIRED.
STORE FLAMMABLE MATERIALS IN A SECURE LOCA-
TION AWAY FROM COMPRESSOR.
NEVER PLACE OBJECTS AGAINST OR ON TOP OF
COMPRESSOR. OPERATE COMPRESSOR IN AN OPEN
AREA AT LEAST 12 INCHES 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 VENTI-
LATED AREA. DO NOT OPERATE UNIT INDOORS OR IN
ANY CONFINED AREA.
ALWAYS REMAIN IN ATTENDANCE WITH THE PROD-
UCT WHEN IT IS OPERATING.
IT IS NORMAL FOR ELECTRICAL CONTACTS WITHIN
THE MOTOR AND PRESSURE SWITCH TO SPARK.
IF ELECTRICAL SPARKS FROM COMPRESSOR COME
INTO CONTACT WITH FLAMMABLE VAPORS, THEY
MAY IGNITE, CAUSING FIRE OR EXPLOSION.
RESTRICTING ANY OF THE COMPRESSOR VENTILA-
TION OPENINGS WILL CAUSE SERIOUS OVERHEATING
AND COULD CAUSE FIRE.
UNATTENDED OPERATION OF THIS PRODUCT COULD
RESULT IN PERSONAL INJURY OR PROPERTY DAM-
AGE.
WHAT CAN HAPPEN HOW TO PREVENT IT
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 sections.

4 - ENGD21879
HAZARD
RISK OF BURSTING
DRAIN TANK DAILY OR AFTER EACH USE. IF TANK
DEVELOPS A LEAK, REPLACE IT IMMEDIATELY WITH A
NEW TANK OR REPLACE THE ENTIRE COMPRESSOR.
NEVER DRILL INTO, WELD, OR MAKE ANY MODIFICA-
TIONS TO THE TANK OR ITS ATTACHMENTS.
THE TANK IS DESIGNED TO WITHSTAND SPECIFIC OPER-
ATING PRESSURES. NEVER MAKE ADJUSTMENTS OR
PARTS SUBSTITUTIONS TO ALTER THE FACTORY SET
OPERATING PRESSURES.
FOR ESSENTIAL CONTROL OF AIR PRESSURE,YOU
MUST INSTALL A PRESSURE REGULATOR AND PRES-
SURE GAUGE TO THE AIR OUTLET (IF NOT EQUIPPED)
OF YOUR COMPRESSOR. FOLLOW THE EQUIPMENT
MANUFACTURERS 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, BASKETBALLS, ETC.
1. FAILURE TO PROPERLY DRAIN CONDENSED
WATER FROM THE TANK, CAUSING RUST AND
THINNING OF THE STEEL TANK.
2. MODIFICATIONS OR ATTEMPTED REPAIRS TO THE
TANK.
3. UNAUTHORIZED MODIFICATIONS TO THE
UNLOADER VALVE, SAFETY VALVE, OR ANY
OTHER COMPONENTS WHICH CONTROL TANK
PRESSURE.
4. EXCESSIVE VIBRATION CAN WEAKEN THE AIR
TANK AND CAUSE RUPTURE OR EXPLOSION.
ATTACHMENTS & ACCESSORIES:
EXCEEDING THE PRESSURE RATING OF AIR TOOLS,
SPRAY GUNS, AIR OPERATED ACCESSORIES, TIRES AND
OTHER INFLATABLES CAN CAUSE THEM TO EXPLODE
OR FLY APART, AND COULD RESULT IN SERIOUS INJURY.
WHAT CAN HAPPEN HOW TO PREVENT IT
AIR TANK: THE FOLLOWING CONDITIONS COULD LEAD TO A WEAKENING OF THE TANK, AND
RESULT IN A VIOLENT TANK EXPLOSION AND COULD CAUSE PROPERTY DAMAGE OR SERIOUS
INJURY.
RISK FROM FLYING OBJECTS
WHAT CAN HAPPEN HOW TO PREVENT IT
THE COMPRESSED AIR STREAM CAN CAUSE SOFT TIS-
SUE 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 ANSI Z87.1 APPROVED SAFETY GLASS-
ES WITH SIDE SHIELDS WHEN USING THE COMPRES-
SOR.
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 TANK BEFORE
ATTEMPTING MAINTENANCE, ATTACHING TOOLS OR
ACCESSORIES.

5 - ENG D22171
HAZARD
RISK TO BREATHING
AIR OBTAINED DIRECTLY FROM THE COMPRESSOR
SHOULD NEVER BE USED TO SUPPLY AIR FOR HUMAN
CONSUMPTION. IN ORDER TO USE AIR PRODUCED BY
THIS COMPRESSOR FOR BREATHING, SUITABLE FIL-
TERS AND IN-LINE SAFETY EQUIPMENT MUST BE
PROPERLY INSTALLED. IN-LINE FILTERS AND SAFETY
EQUIPMENT USED IN CONJUNCTION WITH THE COM-
PRESSOR MUST BE CAPABLE OF TREATING AIR TO ALL
APPLICABLE LOCAL AND FEDERAL CODES PRIOR TO
HUMAN CONSUMPTION.
WORK IN AN AREA WITH GOOD CROSS-VENTILATION.
READ AND FOLLOW THE SAFETY INSTRUCTIONS PRO-
VIDED ON THE LABEL OR SAFETY DATA SHEETS FOR
THE MATERIAL YOU ARE SPRAYING. USE A
NIOSH/MSHA APPROVED RESPIRATOR DESIGNED FOR
USE WITH YOUR SPECIFIC APPLICATION.
THE COMPRESSED AIR DIRECTLY FROM YOUR COM-
PRESSOR IS NOT SAFE FOR BREATHING. THE AIR
STREAM MAY CONTAIN CARBON MONOXIDE, TOXIC
VAPORS, OR SOLID PARTICLES FROM THE TANK.
BREATHING THESE CONTAMINANTS CAN CAUSE
SERIOUS INJURY OR DEATH.
SPRAYED MATERIALS SUCH AS PAINT, PAINT SOL-
VENTS, PAINT REMOVER, INSECTICIDES, WEED
KILLERS, CONTAIN HARMFUL VAPORS AND POISONS.
WHAT CAN HAPPEN HOW TO PREVENT IT
RISK OF ELECTRICAL SHOCK
NEVER OPERATE THE COMPRESSOR OUTDOORS WHEN
IT IS RAINING OR IN WET CONDITIONS.
NEVER OPERATE COMPRESSOR WITH PROTECTIV-
COVERS REMOVED OR DAMAGED.
ANY ELECTRICAL WIRING OR REPAIRS REQUIRED ON
THIS PRODUCT SHOULD BE PERFORMED BY AUTHO-
RIZED SERVICE CENTER PERSONNEL IN ACCORDANCE
WITH NATIONAL AND LOCAL ELECTRICAL CODES.
MAKE CERTAIN THAT THE ELECTRICAL CIRCUIT TO
WHICH THE COMPRESSOR IS CONNECTED PROVIDES
PROPER ELECTRICAL GROUNDING, CORRECT VOLT-
AGE AND ADEQUATE FUSE PROTECTION.
YOUR AIR COMPRESSOR IS POWERED BY ELECTRICI-
TY. LIKE ANY OTHER ELECTRICALLY POWERED DEVICE,
IF IT IS NOT USED PROPERLY IT MAY CAUSE ELECTRIC
SHOCK.
REPAIRS ATTEMPTED BY UNQUALIFIED PERSONNEL
CAN RESULT IN SERIOUS INJURY OR DEATH BY ELEC-
TROCUTION.
ELECTRICAL GROUNDING: FAILURE TO PROVIDE ADE-
QUATE GROUNDING TO THIS PRODUCT COULD
RESULT IN SERIOUS INJURY OR DEATH FROM ELEC-
TROCUTION. SEE GROUNDING INSTRUCTIONS.
WHAT CAN HAPPEN HOW TO PREVENT IT

6 - ENGD21879
HAZARD
RISK FROM MOVING PARTS
NEVER OPERATE THE COMPRESSOR WITH GUARDS
OR COVERS WHICH ARE DAMAGED OR REMOVED.
ANY REPAIRS REQUIRED ON THIS PRODUCT SHOULD
BE PERFORMED BY AUTHORIZED SERVICE CENTER
PERSONNEL.
MOVING PARTS SUCH AS THE PULLEY, FLYWHEEL AND
BELT CAN CAUSE SERIOUS INJURY IF THEY COME
INTO CONTACT WITH YOU OR YOUR CLOTHING.
ATTEMPTING TO OPERATE COMPRESSOR WITH DAM-
AGED OR MISSING PARTS OR ATTEMPTING TO REPAIR
COMPRESSOR WITH PROTECTIVE SHROUDS REMOVED
CAN EXPOSE YOU TO MOVING PARTS AND CAN
RESULT IN SERIOUS INJURY.
WHAT CAN HAPPEN HOW TO PREVENT IT
RISK OF FALLING
WHAT CAN HAPPEN HOW TO PREVENT IT
A PORTABLE COMPRESSOR CAN FALL FROM A TABLE,
WORKBENCH OR ROOF CAUSING DAMAGE TO THE
COMPRESSOR AND COULD RESULT IN SERIOUS
INJURY OR DEATH TO THE OPERATOR.
ALWAYS OPERATE COMPRESSOR IN A STABLE
SECURE POSITION TO PREVENT ACCIDENTAL MOVE-
MENT OF THE UNIT. NEVER OPERATE COMPRESSOR
ON A ROOF OR OTHER ELEVATED POSITION. USE
ADDITIONAL AIR HOSE TO REACH HIGH LOCATIONS.
RISK OF PROPERTY DAMAGE WHEN TRANSPORTING
COMPRESSOR
WHAT CAN HAPPEN HOW TO PREVENT IT
OIL CAN LEAK OR SPILL AND COULD RESULT IN FIRE
OR BREATHING HAZARD, SERIOUS INJURY OR DEATH
CAN RESULT. OIL LEAKS WILL DAMAGE CARPET, PAINT
OR OTHER SURFACES IN VEHICLES OR TRAILERS.
ALWAYS PLACE COMPRESSOR ON A PROTECTIVE MAT
WHEN TRANSPORTING TO PROTECT AGAINST DAMAGE
TO VEHICLE FROM LEAKS. REMOVE COMPRESSOR
FROM VEHICLE IMMEDIATELY UPON ARRIVAL AT YOUR
DESTINATION.
(Fire, Inhalation, Damage to Vehicle Surfaces)
RISK OF BURNS
WHAT CAN HAPPEN HOW TO PREVENT IT
TOUCHING EXPOSED METAL SUCH AS THE COMPRES-
SOR HEAD OR OUTLET TUBES, CAN RESULT IN
SERIOUS BURNS.
NEVER TOUCH ANY EXPOSED METAL PARTS ON
COMPRESSOR DURING OR IMMEDIATELY AFTER OPER-
ATION. 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.
For units requiring oil in pump or gasoline engines

7 - ENG D22171
ASSEMBLY
Contents of Carton
1 - Air Compressor
2 - Wheels
2 - Shoulder Bolts, 3/8-16
2 - Hex Nuts, 3/8-16
1 - Handle
1 - Handle Grip
2 - Cap Screws
2 - 1/4-20 Hex Nuts
2 - Retainer Clips
2 - Flat Washers
2 - Rubber Bumpers
2 - Screws, 1/4-20 x .75
Tools Required for Assembly
1 - 9/16” socket or open end wrench
1 - 1/2” socket or open end wrench
GLOSSARY
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 meas-
ure of pressure.
ASME: American Society of Mechanical Engineers;
made, tested, inspected and registered to meet the
standards of the ASME.
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 accesso-
ry. When the tank pressure drops to the factory set
low pressure 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 factory set 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 elec-
trical panel to outlet.
ACCESSORIES
Accessories
• In Line Filter
• Tire Air Chuck
• Quick Connector Sets
(various sizes)
• Air Pressure Regulators
• Oil Fog Lubricators
• Air Hose:
1/4", 5/16”, or 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.
The accessories and tools are available through the current Power and Hand Tool Catalog or full-line Sears
stores.

8 - ENGD22171
Unpacking
1. Remove unit from carton and discard all packag-
ing. NOTE: Save all parts bags.
To Install Handle
The wheels and handle
do not provide adequate
clearance, stability, or support for pulling
the unit up and down stairs or steps. The
unit must be lifted or pushed up a ramp.
Do not lift the unit be the manifold assem-
bly, the unit could be damaged.
1. To make installation easier, submerge handle grip
into warm soapy water. Remove handle grip from
soapy water and slide onto handle.
2. Insert the open end of the handle under the sad-
dle. Before attaching handle, you may have to pull
the open ends of the handle apart so they fit
tightly against the side of the saddle. Looking in
from the open end of the saddle, position the
handle toward the two bent tabs, on the inside
walls of the saddle.
3. Slowly push the open ends of the handle onto
both tabs at the same time. Continue pushing the
handle into the saddle until the holes on the side
of the saddle and handle are in line.
4. Guide the straight end of each retaining clip
through the saddle hole and both handle holes.
5. Rotate each retaining clip clockwise and press
down until it snaps into place over the handle.
6. If the handle has excessive movement, it is
improperly installed. Check the following.
A. Are both tabs inside the handle (Step #3)?
B. Does each clip pass through both the saddle
and handle (Step #4)?

9 - ENG D22171
To Assemble Wheels
It will be necessary to brace
or support one side of the
outfit when installing the wheels because the
compressor will have a tendency to tip.
1. Attach wheels with shoulder bolts and nuts as
shown.
2. Tighten securely. NOTE: The outfit will sit level if
the wheels are properly installed.
The wheels and handle
do not provide adequate
clearance, stability or support for pulling
the unit up and down stairs or steps. The
unit must be lifted, or pushed up a ramp.
Assemble Rubber Feet
1. Attach rubber feet with the screws, washers and
nuts provided as shown in previous figure.
2. Tighten securely.
Screw
Nut
Wheel
Shoulder Bolt
Flat Washer
Rubber Foot
Nut
A
To Add Oil To Pump
Compressors are
shipped without oil. A
small amount of oil may be present in the
pump upon receipt of the air compressor.
This is due to plant testing and does not
mean the pump contains oil. Do not
attempt to operate this air compressor
without first adding oil to the crankcase.
Serious damage can result from even limit-
ed operation unless filled with oil and bro-
ken in correctly. Make sure to closely fol-
low initial start-up procedures.
Multi-Viscosity motor
oils, like 10W 30, should
not be used in an air compressor. They
leave carbon deposits on critical compo-
nents, thus reducing performance and
compressor life. Use air compressor oil
only.
NOTE: Use an air compressor oil such as Sears 9-
16426 or SAE-20 (API CG/CD heavy duty motor oil.
Under extreme winter conditions use SAE-10 weight
oil.
1. Place unit on a level surface.
2. Remove oil fill plug (A) and slowly add a compres-
sor oil until it is even with the top of the oil fill
hole. NOTE: Do not allow oil to be lower than 3/8"
(6 threads) from the top at any time. When filling
the crankcase, the oil flows very slowly into the
pump. If the oil is added too quickly, it will over-
flow and appear to be full. NOTE: Crankcase oil
capacity is approximately 16 fluid ounces.
3. Replace oil fill plug.

10 - ENGD22171
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 ground-
ing 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 ordi-
nances.
1. The cord set and plug with this unit contains a
grounding pin. This plug MUST be used with a
grounded outlet.
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.
Grounding Pin
Grounded
Outlets
Plug
INSTALLATION
HOW TO SET UP YOUR UNIT
Location of the Air Compressor
l
Locate the air compressor in a clean, dry, and well
ventilated area.
l
The air compressor should be located at least 12"
away from the wall or other obstructions that will
interfere with the flow of air.
l
The air filter and flywheel must be kept clear of
obstructions which could reduce air flow to the air
compressor.
l
The air compressor requires fresh air flow for
proper cooling. DO NOT ALLOW THE COM-
PRESSOR TO GET WET.
4. If these grounding instructions are not completely
understood, or if in doubt as to whether the com-
pressor is properly grounded, have the installation
checked by a qualified electrician.
IMPROPER GROUNDING
CAN RESULT IN ELEC-
TRICAL SHOCK.
Do not modify the plug provided. If it does
not fit the available outlet, a correct outlet
should be installed by a qualified electri-
cian.
Repairs to the cord set or plug MUST be
made by a qualified electrician.
Extension Cords
Use extra air hose instead of an extension cord to
avoid voltage drop and power loss to the motor, and
to prevent overheating.
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 Parts Manual for the voltage and mini-
mum branch circuit requirements.
Certain air compressors can be operated on a 15 amp
circuit if the following conditions are met.
1. Voltage supply through branch circuit is 15 amps.
2. Circuit is not used to supply any other electrical
needs (lights, appliances, etc.).
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 inter-
ruption of the power, it may be necessary to operate it
from a 20 amp circuit. It is not necessary to change
the cord set.

11 - ENG D22171
OPERATION
Description of Operation
Become familiar with these controls before operating
the unit.
On/Auto/Off Switch: Turn this switch ON 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 high-
er than the pressure switch “cut-out” setting).
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 reg-
ulator 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.
Drain Valve: The drain
valve is located at the
base of the air tank and is
used to drain condensa-
tion at the end of each
use.
Cooling System (not shown): This compressor con-
tains an advanced design cooling system. At the heart
of this cooling system is an engineered fan. It is per-
fectly 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”, allow-
ing compressed air to
enter the air tank.
When the air com-
pressor reaches “cut-
out” pressure, the
check valve “closes”,
allowing air pressure
to remain inside the
air tank.
Pressure Release Valve: The pressure release valve,
located on the side of the pressure switch, is
designed to automatically release compressed air
from the compressor head and the outlet tube when
the air compressor reaches “cut-out” pressure or is
shut off. The pressure release valve allows the motor
to restart freely. When the motor stops running, air will
be heard escaping from this valve for a few seconds.
No air should be heard leaking when the motor is run-
ning, or continuous leaking after unit reaches “cut-
out” pressure.
Air Intake Filter (not shown) This filter is designed
to clean air coming into the pump. This filter must
always be clean and ventilation openings free from
obstructions. See "Maintenance".
Know Your Air Compressor
READ THIS OWNER’S MANUAL AND SAFETY RULES BEFORE OPERATING YOUR UNIT. Compare the illustra-
tions with your unit to familiarize yourself with the location of various controls and adjustments. Save this manual
for future reference.
Drain
Valve
Pressure
Switch
Regulator
Pressure
Release
Valve
On/Auto/Off
Switch
Safety Valve
Outlet
Pressure Gauge
Check Valve
Tank
Pressure Gauge

12 - ENGD22171
How to Start:
1. Turn the On/Auto/Off lever to “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 com-
pressor is ready for use.
NOTE: Always operate the air compressor in well-
ventilated areas free of gasoline or other combustible
vapors. If the compressor is being used to operate a
sprayer DO NOT place near the spray area.
Before Starting
Break-in Procedure
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: If quick connect is installed, 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-clock-
wise) to permit air to
escape and prevent air
pressure build up in
the air tank during the
break-in period.
How to Use Your Unit
How to Stop:
1. Set the On/Auto/Off lever to “OFF”.
Before Each Start-Up:
1. Place On/Auto/Off lever to “OFF”.
2. Pull regulator knob out, turn counter-clockwise
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.
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.
4. Move the On/Auto/Off lever to "ON/AUTO" posi-
tion. The compressor will start.
5. Run the compressor for 30 minutes. Make sure
the drain valve is open and there is minimal air
pressure build-up in tank.
6. After 30 minutes, move the On/Auto/Off lever to
"OFF" position and close the drain valve (clock-
wise).
7. Move the On/Auto/Off lever to "ON/AUTO" posi-
tion. The air receiver will fill to “cut-out” pressure
and the motor will stop.
The compressor is now ready for use.
Drain
Valve
Pressure
Switch
Regulator
On/Auto/Off
Switch
Safety Valve
Tank
Pressure Gauge
Outlet
Pressure Gauge Quick Connect

13 - ENG D22171
MAINTENANCE
Customer Responsibilities
Daily or
after
each use
Before
each use
Check Safety Valve
Drain Tank
Oil Leaks
Check Oil
Change Oil
Unusual Noise and/or Vibration
Air Filter
Drive Belt
Condition
Motor Pulley/Flywheel alignment
Air compressor pump intake and
exhaust valves
To Check Safety Valve
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”.
2. Pull the regulator knob out and turn clockwise to
set the outlet pressure to zero.
3. Remove the air tool or accessory.
●
●
●
NOTE: See “Operation” section for the location of controls.
To ensure efficient operation and longer life of the air compressor outfit, a routine maintenance schedule should
be prepared and followed. The following routine maintenance schedule is geared to an outfit in a normal working
environment operating on a daily basis. If necessary, the schedule should be modified to suit the conditions
under which your compressor is used. The modifications will depend upon the hours of operation and the work-
ing environment. Compressor outfits in an extremely dirty and/or hostile environment will require a greater fre-
quency of all maintenance checks.
Unit cycles automatically when power is on. When performing maintenance, you may
be exposed to voltage sources, compressed air, or moving parts. Personal injuries
can occur. Before performing any maintenance or repair, disconnect power source from the compressor
and bleed off all air pressure.
●
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.
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, then rein-
stalled.
Every 8
hours
Every 40
hours
Every
100
hours Yearly
Every
160
hours
●
●
●1
●
●
●
1- more frequent in dusty or humid conditions

14 - ENGD22171
Air Compressor Pump Intake and Exhaust
Valves
Once a year have a Trained Service Technician check
the air compressor pump intake and exhaust valves.
Air Filter - Inspection and Replacement
Hot surfaces. Risk of
burn. Compressor heads
are exposed when filter cover is removed.
Allow compressor to cool prior to servicing.
A dirty air filter will not allow the compressor to oper-
ate at full capacity. Keep the air filter clean at all
times.
1. Remove the air filter cover.
2. Remove the air filter from filter cover.
IMPORTANT: Do not operate the compressor with
the air filter removed.
3. Place new air filter into filter cover. Refer to the
“Repair Parts” for the correct part number.
4. Replace air filter cover and lock into place.
Oil
Checking
1. Remove the oil fill plug
(A). The oil level should be
even with the top of the
fill hole and no lower than
6 threads from the top of
fill hole.
2. If needed, slowly add oil
until it reaches the top of
fill hole.
NOTE: Use a air compressor
oil such as Sears 9-16426 or SAE-20 (API CG/CD
heavy duty motor oil. Under extreme winter conditions
use SAE-10 weight oil.
Changing
1. Remove the oil fill plug (A).
2. Remove the oil drain plug (B) and drain oil into a
suitable container.
3. Replace the oil drain plug (B) and tighten securely
NOTE: Use a air compressor oil such as Sears 9-
16426 or SAE-20 (API CG/CD heavy duty motor oil.
Under extreme winter conditions use SAE-10 weight
oil.
4. Slowly fill crankcase to the top of the fill hole.
Crankcase capacity is 16 fluid ounces (473.2 ml).
Overfilling with oil will
cause premature com-
pressor failure. Do not overfill.
5. Replace oil fill plug (A) and tighten securely.
Motor Pulley/Flywheel Alignment
NOTE: Once the motor pulley has been moved from
its factory set location, the grooves of the flywheel
and pulley must be aligned to within 1/16" to prevent
excessive belt wear.
The air compressor flywheel and motor pulley must
be in-line (in the same plane) within 1/16" to assure
belt retention within flywheel belt grooves. To check
alignment, perform the following steps:
1. Unplug air compressor from power source.
2. Remove belt guard
3. Place a straightedge against the outside of the
flywheel and the motor drive pulley.
4. Measure the distance between the edge of the
belt and the straightedge at points A1 and A2 in
figure. The difference between measurements
should be no more than 1/16".
5. If the difference is greater or less than 1/16"
loosen the set screw holding the motor drive pul-
ley to the shaft and adjust the pulley’s position on
the shaft until the A1 and A2 measurements are
within 1/16" of each other.
6. Tighten the motor drive pulley set screw to 70-80
in.-lbs.
7. Visually inspect the motor drive pulley to verify
that it is perpendicular to the drive motor shaft.
Points B1 and B2 of Figure should appear to be
equal. If they are not, loosen the setscrew of the
motor drive pulley and equalize B1 and B2, using
care not to disturb the belt alignment performed
in step 2.
8. Retighten the motor drive pulley setscrew to 70-
80 in.-lbs.
9. Reinstall belt guard.
A
B

15 - ENG D22171
7. Clean or replace the check valve. A solvent, such
as paint or varnish remover can be used to clean
the check valve.
8. Apply sealant to the check valve threads. Reinstall
the check valve (turn clockwise).
9. Replace the pressure release tube. Tighten nuts.
10. Replace the outlet tube and tighten nuts.
11. Perform the Break-in Procedure. See “Break-in
Procedure” in the Operation section.
SERVICE AND ADJUSTMENTS
Unit cycles automatically when power is on. When doing Maintenance, you may be exposed
to voltage sources, compressed air or moving parts. Personal injuries can occur. Before per-
forming any Maintenance or repair, unplug the compressor and bleed off all air pressure.
ALL MAINTENANCE AND REPAIR OPERATIONS NOT LISTED MUST BE PERFORMED BY
TRAINED SERVICE TECHNICIAN.
To Replace or Clean Check Valve
1. Release all air pressure from air tank. See “To
Drain Tank” in the Maintenance section.
2. Unplug unit.
3. Using an adjustable wrench loosen outlet tube nut
at air tank and pump. Carefully move outlet tube
away from check valve.
4. Using an adjustable wrench loosen pressure relief
tube nut at air tank and pressure switch. Carefully
move pressure relief tube away from check valve.
5. Unscrew the check valve (turn counterclockwise)
using a 7/8” open end wrench. Note the orienta-
tion for reassembly.
6. Using a screwdriver, carefully push the valve disc
up and down. NOTE: The valve disc should move
freely up and down on a spring which holds the
valve disc in the closed position, if not the check
valve needs to be cleaned or replaced.
Before servicing:
●Unplug or disconnect electrical supply to the
air compressor.
●Bleed tank of pressure.
●Allow the air compressor to cool.
Outlet Tube
Check
Valve
In closed position
disc is visible.
In open position
nothing is visible.
Screwdriver
Motor
This motor has a manual ther-
mal overload protector. If the
motor overheats for any rea-
son, the overload protector
will shut off the motor. The
motor must be allowed to
cool down before restarting.
To restart:
1. Place the On/Auto/Off lever in the Off position.
2. Allow the motor to cool.
3. Depress the red reset button on the motor.
4. Place the On/Auto/Off lever in the On/Auto pos-
tion to restart the motor.
IMPORTANT: If the overload protector shuts the motor
off frequently, check for a possible voltage problem.
Low voltage can also be suspected when:
1. The motor does not get up to full power or speed.
2. Fuses blow out when starting the motor; lights
dim and remain dim when motor is started and is
running.
Nuts
Nuts
Pressure
Relief Tube

16 - ENGD22171
To Replace Belt
Serious injury or damage
may occur if parts of the
body or loose items get caught in moving
parts. Never operate the unit with the belt
guard removed. The belt guard should be
removed only when the compresor is
unplugged.
1. Unplug compressor.
2. Remove the front of the belt guard by disengaging
the snaps. Insert a flat bladed screwdriver at each
snap location and pry the beltguard apart.
3. Loosen the wing nut on hold down plate and tilt
motor to allow for easy removal or installation of
the belt.
4. Remove belt.
5. Replace belt. NOTE: The belt must be centered
over the grooves on the flywheel and motor pul-
ley.
6. Turn the wing nut on the hold down plate until it
makes contact with the washer, plus one addition-
al turn.
7. Replace the belt guard.
To Replace Regulator
1. Release all air pressure from air tank. See “To
Drain Tank” in the Maintenance section.
2. Unplug outfit.
3. Remove the regulator ring and remove the con-
sole cover.
4. Using an adjustable wrench loosen pressure relief
tube nut at air tank and pressure switch.
5. Lift retaining clip from handle and remove handle.
6. Using an adjustable wrench, rotate the pressure
switch assembly as shown.
7. Remove the outlet pressure gauge, tank pressure
gauge, and quick connect (if equipped) from the
regulator.
8. Remove the regulator.
9. Apply pipe sealant tape to the nipple.
10. Assemble the regulator and orient as shown.
NOTE: Arrow indicates flow
of air. Make sure it is point-
ing in the direction of air
flow.
Outlet
Pressure
Gauge
Tank
Pressure
Gauge
Quick
Connect
Regulator
Regulator
Arrow
Regulator
Ring Console Cover
Retaining clip
Handle
11. Reapply pipe sealant to outlet pressure gauge,
tank pressure gauge, and quick connect.
12. Reassemble outlet pressure gauge,tank pressure
gauge, and quick connect. Orient outlet pressure
gauge and tank pressure gauge to read correctly.
Tighten quick connect with wrench.
13. Rotate pressure switch assemble into correct
position.
14. Replace console cover and regulator ring.
15. Replace handle. Refer to Handle Assembly para-
graph in the Assembly section.
Belt Guard
Wing Nut

17 - ENG D22171
STORAGE
Before you store the air compressor, make sure you
do the following:
1. Review the "Maintenance" section on the preced-
ing pages and perform scheduled maintenance as
necessary.
2. Set the On/Auto/Off lever to “OFF”.
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.
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 pres-
sure. The valve can then e removed, cleaned, then
reinstalled.
8. Protect the electrical cord and air hose from dam-
age (such as being stepped on or run over). Wind
them loosely around the compressor handle. (If so
equipped)
Store the air compressor in a clean and dry location.

18 - ENGD22171
TROUBLESHOOTING
Performing repairs may expose voltage sources, moving parts or compressed air sources,
moving parts or compressed air sources. Personal injury may occur. Prior to attempting any
repairs, unplug the air compressor and bleed off all air tank air pressure.
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 at pressure switch
release valve.
Defective pressure switch release
valve.
Contact a Trained Service
Technician.
Air leaks in air tank or at air tank
welds.
Defective air tank. Air tank must be replaced. Do not
repair the leak.
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.
Air leaks at or inside check valve Check valve seat damaged. A defective check valve results in
a constant air leak at the pressure
release valve when there is pres-
sure in the tank and the compres-
sor is shut off. Replace check
valve. Refer the “To Replace or
Clean Check Valve” in the
“Operation” section.
Pressure reading on the regulated
pressure gauge drops when an
accessory is used.
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 fol-
lowing the instructions in the
“Description of Operation” para-
graph in the “Operation Section.
NOTE: Adjust the regulated pres-
sure under flow conditions (while
accessory is being used).

19 - ENG D22171
PROBLEM CAUSE CORRECTION
Possible defect in safety valve. Operate safety valve manually by
pulling on ring. If valve still leaks,
it should be replaced.
Defective check valve. Remove and clean, or replace.
Knocking Noise.
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.
Restricted air intake filter
Decrease amount of air usage.
Check the accessory air require-
ment. 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.
Clean or replace air intake filter.
Do not operate the air compressor
with the filter removed. Refer to
the “Air Filter” paragraph in the
“Maintenance “ section
Damaged regulator ReplaceRegulator knob has continuous air
leak.
Regulator will not shut off air out-
let.
Damaged regulator Replace
Loose pulley Tighten pulley set screw,
70-80 in.-lbs.
Compressor mounting screws
loose
Tighten mounting screws,
15-20 ft.-lbs.
Loose flywheel Tighten flywheel screw,
15-20 ft.-lbs.
Loose belt Loosen wingnut and then tighten
wingnut until it contacts the wash-
er, plus one turn.
Carbon build-up in pump Have checked by a Trained
Service Technician.
Belt too tight Loosen wingnut and then tighten
wingnut until it contacts the wash-
er, plus one turn.
Loose belt. Loosen wingnut and then tighten
wingnut until it contacts the wash-
er, plus one turn.

20 - ENGD22171
Motor will not run.
Fuse blown, circuit breaker
tripped.
1. Check fuse box for blown fuse
and replace as necessary.
Reset circuit breaker. Do not
use a fuse or circuit breaker
with higher rating than that
specified for your particular
branch circuit.
2. Check for proper fuse. You
should use a time delay fuse.
3. Check for low voltage condi-
tions and/or proper extension
cord.
4. Disconnect the other electrical
appliances from circuit or
operate the compressor on its
own branch circuit.
PROBLEM CAUSE CORRECTION
Motor overload protection switch
has tripped
Let motor cool off and overload
switch will automatically reset.
Tank pressure exceeds pressure
switch “cut-in” pressure.
Motor will start automatically
when tank pressure drops below
“cut-in” pressure of pressure
switch.
Extension cord is wrong length or
gauge.
Check for proper gauge wire and
cord length.
Loose electrical connections. Check wiring connection inside
pressure switch and terminal box
area.
Have checked by a Trained
Service Technician.
Check valve stuck open. Remove and clean, or replace.
Possible defective motor or start-
ing capacitor.
Have checked by a Trained
Service Technician. Do not oper-
ate the compressor in the paint
spray area. See flammable vapor
warning.
Paint spray on internal motor
parts.
Bleed the line by pushing the lever
on the pressure switch to the “off”
position; if the valve does not
open, replace switch.
Pressure release valve on pres-
sure switch has not unloaded
head pressure.
Clean or replace. See Air Filter
paragraph in the Maintenance
section.
Dirty air filter.
Restricted air intake