Craftsman 919.727360 User manual

SEARS
CRAFTSMAN
Model No.
919.727360
IMPORTANT:
Read the Safety Guidelines
and All Instructions Carefully
Before Operating
OWNERS MANUAL FOR
CRAFTSMAN
PERMANENTLY LUBRICATED
TANK MOUNTED
AIR COMPRESSOR
SAFETY GUIDELINES
ASSEMBLY
OPERATION
MAINTENANCE
TROUBLESHOOTING
REPAIR PARTS
Record in the spaces provided.
(1) The Model Number can be found on the
maintenance label on top of the motor
shroud or on the bar code label on the
rear of air tank.
(2) The Date Code Number can be found
on the bar code label on the rear of the
air tank.
(3) The Serial Number can be found on the
bar code label on the rear of the tank.
(4) The Tank Registration Number is
located on the metal data plate which is
welded onto the backside of the air
tank. (This data plate is painted the
same color as the tank.)
Retain these numbers for future reference.
Model No
Serial No
Date Code
Tank Registration No
MGP-727360 9/20/99
Sold by Sears Canada, Inc., Toronto, Ont. M5B 2B8

TABLE OF CONTENTS
Page
WAR RANTY ............................................................ 2
SAFETY GUIDELINES-DEFINITIONS ...................... 2
SAFETY GUIDELINES ............................................. 3
Page
Lubrication and Oil ............................................ 8
Grounding Instructions ..................................... 8
Voltage and Circuit Protection .......................... 9
Extension Cords ............................................... 9
Break-in Procedure ........................................... 9
IMPORTANT SAFETY INSTRUCTIONS ................... 3 OPERATING PROCEDURES ................................. 10
GENERAL INFORMATION ....................................... 6
GLOSSARY ............................................................. 6
SPECIFICATION CHART ......................................... 6
DESCRIPTION OF OPERATION .............................. 7
TOOLS NEEDED FOR ASSEMBLY ......................... 7
ASSEMBLY .............................................................. 8
INSTALLATION AND BREAK-IN PROCEDURES ..... 8
Location of Air Compressor .............................. 8
MAINTENANCE ..................................................... 11
Air Filter - Inspection and Replacement .......... 11
Check Valve -Replacement ............................. 11
Safety Valve - Inspection ................................ 1t
Motor .............................................................. 11
Storage ........................................................... 11
TROUBLESHOOTING GUIDE ............... ................ 12
AIR COMPRESSOR DIAGRAM ............................. 13
COMPRESSOR PUMP DIAGRAM ........................ 15
HOW TO ORDER REPAIR PARTS ......................... 20
FULL ONE YEAR WARRANTY ON AIR COMPRESSORS
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 SERVICE CENTER THROUGHOUT CANADA AND
SEARS WILL REPAIR IT,FREE OF CHARGE.
If this air compressor is used for commercial or rental purposes, the warranty will apply for ninety days
(90) from the date of purchase.
This Craftsman Air Compressor warranty gives you specific legal rights and you may have other rights
which vary from province to province.
Sears Canada, Inc., Toronto, Ont. M5B 2B8 ......... _ 1
SAFETY GUIDELINES -DEFINITIONS-----'
This manua_ contains information that is important for you to know and understand. This information retates to protecting
YOUR SAFETY and PREVENTING EQUIPMENT PROBLEMS. To help you recognize this informat ,
symbots to the right. Please read the manual and pay attention to these sections. ............
_o_
DANGER indicates an imminently hazardous situation which, if
not avoided, will result in death or serious inlay.
WARNING indicates a potentially hazardous situation which, if
not avoided, could result in death of serio si "u .
CAUTION indicates a potentially hazardous situation which, if
not avoided, _ result in mjnor or moderate iniur_.
CAUTION used without the safety alert symbol indicates a
potentially hazardous situation which, if not avoided, _ result
np_j_d_Ldam_g._

IMPORTANT SAFETY INSTRUCTIONS
IMPROPER OPERATION OR MAINTENANCE OF THIS PRODUCT COULD RESULT IN SERIOUS INJURY AND PROPERTY DAM-
AGE. READ AND UNDERSTAND ALL WARNINGS AND OPERATING INSTRUCTIONS BEFORE USING THIS EQUIPMENT.
HAZARD
RISK OF EXPLOSION OR FIRE
WHAT CAN HAPPEN
IT IS NORMAL FOR ELECTRICAL CONTACTS WITHIN THE
MOTORAND PRESSURESWITCHTO SPARK.
IF ELECTRICAL SPARKS FROM COMPRESSOR COME INTO
CONTACT WITH FLAMMABLE VAPORS, THEY MAY IGNITE,
CAUSING FIRE OR EXPLOSION.
RESTRICTING ANY OF THE COMPRESSOR VENTILATION
OPENINGS WILL CAUSE SERIOUS OVERHEATING AND COULD
CAUSE FIRE.
COMBUSTIBLE MATERIALS WHICH COME INTO CONTACT WITH
HOT ENGINE PARTS CAN BECOME IGNITED.
UNATTEN DED OPERATION OF THIS PRODUCT COULD RESULT
IN PERSONAL INJURY OR PROPERTY DAMAGE.
HOWTOPREVENTIT
ALWAYS OPERATE THE COMPRESSOR IN AWELL VENTILATED
AREA FREE OF COMBUSTIBLE MATERIALS, GASOLINE OR
SOLVENT VAPORS.
IFSPRAYING FLAMMABLE MATERIALS. LOCATE COMPRESSOR
AT LEAST 20 FEET AWAY FROM SPRAY AREA. AN ADDITIONAL
LENGTH OF HOSE MAY BE REQUIRED.
STORE FLAMMABLE MATERIALS IN A SECURE LOCATION
AWAY FROM COMPRESSOR.
NEVER PLACE OBJECTS AGAINST OR ON TOP OF
COM PRESSOR. OPERATE COMPRESSOR INAN OPEN AREA AT
LEAST 12 INCHES AWAY FROM ANY WALL OR OBSTRUCTION
THAT WOULD RESTRICT THE FLOW OF FRESH AIR TO THE
VENTILATION OPENINGS.
ADD FUEL OUTDOORS iN A WELL VENTILATED AREA MAKE
SURE THERE ARE NO SOURCES OF IGNITION, SUCH AS
CIGARE]q-ES NEAR REFUELING LOCATION.
OPERATE COMPRESSOR 1N A CLEAN, DRY, WELL VENTILATED
AREA A MINIMUM OF FOUR FEET FROM ANY BUILDING, OBJECT
OR WALL. DO NOT OPERATE UNIT INDOORS OR IN ANY CON-
FINED AREA.
ALWAYS REMAIN IN ATTENDANCE WITH THE PRODUCT
WHEN IT IS OPERATING.
RISKOF BURSTING [ _
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.
WHAT CAN HAPPEN
1. FAILURE TO PROPERLY DRAIN CONDENSED WATER
FROM THE TANK, CAUSING RUST AND THINNING OF THE
STEEL TANK.
2. MODIFICATIONS OR A]q-EMPTED 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. EXCESSIVE
VIBRATION WILL OCCUR IF THE COMPRESSOR IS NOT
PROPERLY MOUNTED OR IF THE ENGINE OPERATES
ABOVE RECOMMENDED RPM
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
HOWTO PREVENT IT
DRAIN TANK DALLY OR AFTER EACH USE. IF TANK DEVELOPS A
LEAK, REPLACE IT IMMEDIATELY WITH A NEW TANK OR REPLACE
THE ENTIRE COMPESSOR,
NEVER DRILL INTO, WELD, OR MAKE ANY MODIFICATIONS TO
THE TANK OR ITS ATFACHMENTS.
THE TANK IS DESIGNED TO WITHSTAND SPECIFIC OPERATING
PRESSURES. NEVER MAKE ADJUSTMENTS OR PARTS
SUBSTITUTIONS TO ALTER THE FACTORY SET OPERATING
PRESSURES.
DO NOT REMOVE THE STIFFENER BAR CONNECTING THE
COMPRESSOR PUMP TO THE ENGINE, EXCEPT TO ADJUST BELT
TENSION, THEN SECURELY TIGHTEN THE STIFFNER BAR NUTS.
THIS BAR CONTROLS OUTFIT VIBRATION.
FOR ESSENTIAL CONTROL OF AIR PRESSURE, YOU MUST INSTALL
A PRESSURE REGULATOR AND PRESSURE GAUGE TO THE AIR
OUTLET OF YOUR COMPRESSOR. FOLLOW THE EQUIPMENT
MANUFACTURERS RECOMMENDATION AND NEVER EXCEED THE
MAXIMUM ALLOWABLE PRESSURE RATING OF ATrACHMENTS.
NEVER USE COMPRESSOR TO INFLATE SMALL LOW-PRESSURE
OBJECTS SUCH AS CHILDREN'S TOYS, FOOTBALLS, BASKET-
BALLS. ETC.

RISK FROM FLYING OBJECTS
WHAT CAN HAPPEN
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
HOWTO PREVENT IT
ALWAYS WEAR ANSI Z87.1 APPROVED SAFETY GLASSES 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 TANK BEFORE ATTEMPTING
MAINTENANCE, ATTACHING TOOLS OR ACCESSORIES.
RISK TO BREATHING
WHAT CAN HAPPEN
THE COMPRESSED AIR FROM YOUR COMPRESSOR IS NOT SAFE
FOR BREATHING! THE AIR STREAM MAY CONTAIN CARBON
MONOXIDE, TOXIC VAPORS OR SCUD PARTICLES FROM THE
TANK.
SPRAYED MATERIALS SUCH AS PAINT, PAINT SOLVENTS, PAINT
REMOVER, INSECTICIDES, WEED KILLERS, CONTAIN HARMFUL
VAPORS AND POISONS.
HOWTO PREVENT IT
ALWAYS OPERATE AIR COMPRESSOR OUTSIDE IN A CLEAN,
WELL VENTILATED AREA. AVOID ENCLOSED AREAS SUCH AS
GARAGES, BASEMENTS, STORAGE SHEDS, WHICH LACK A
STEADY EXCHANGE OF AIR. KEEP CHILDREN, PETS AND OTHERS
AWAY FROM AREA OF OPERATION
NEVER INHALE AIR FROM THE COMPRESSOR EITHER DIRECTLY
OR FROM A BREATHING DEVICE CONNECTED TO THE
COMPRESSOR.
WORK IN AN AREA WITH GOOD CROSS-VENTILATION. READ
AND FOLLOW THE SAFETY INSTRUCTIONS PROVIDED 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
RISK OF ELECTRICAL SHOCK
WHAT CAN HAPPEN
YOUR AIR COMPRESSOR IS POWERED BY ELECTRICITY. 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 ELECTROCUTION.
ELECTRICAL GROUNDING: FAILURE TO PROVIDE ADEQUATE
GROUNDING TO THIS PRODUCT COULD RESULT IN SERIOUS
INJURY OR DEATH FROM ELECTROCUTION. SEE GROUNDING
.INSTRUCTIONS
i
HOWTO PREVENT IT
NEVER OPERATE THE COMPRESSOR OUTDOORS WHEN IT IS
RAINING OR IN WET CONDITIONS.
NEVER OPERATE COMPRESSOR WITH COVER COMPONENTS
REMOVED OR DAMAGED.
ANY ELECTRICAL WIRING OR REPAIRS REQUIRED ON THIS
PRODUCT SHOULD BE PERFORMED BY AUTHORIZED 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 VOLTAGE AND ADEQUATE FUSE
PROTECTION.

RISK FROM MOVING PARTS
WHAT CAN HAPPEN
THE ENGINE CAN START ACCIDENTALLY IF THE FLYWHEEL IS
TURNED BY HAND OR MOVED BY PULLING ON THE STARTER
ROPE
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 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.
HOW TO PREVENT IT
ALWAYS DISCONNECT THE SPARK PLUG AND BLEED PRESSURE
FROM THE TANK BEFORE PERFORMING MAINTENANCE.
NEVER OPERATE THE COM PRESSOR WITH GUARDS OR COVERS
WHICH ARE DAMAGED OR REMOVED.
ANY REPAIRS REQUIRED ON THIS PRODUCT SHOULD RE
PERFORMED BY AUTHORIZED SERVICE CENTER PERSONNEL.
RISK OF BURNS
WHAT CAN HAPPEN
TOUCHING EXPOSED METAL SUCH AS THE COMPRESSOR HEAD
OR OUTLET TUBES OR CONTACT WITH HOT ENGINE PARTS,
SUCH AS THE MUFFLER, CAN RESULT IN SERIOUS BURNS.
THE GASOLINE ENGINE, THE ENGINE MUFFLER, THE COMPRES-
SOR HEAD AND TUBING BECOME VERY HOT DURING OPERATION.
HOWTO PREVENT IT
NEVER TOUCH ANY EXPOSED METAL PARTS ON ENGINE OR
COMPRESSOR DURING OR IMMEDIATELY AFTER OPERATION
ENGINE AND 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
RISK OF FALLING
WHATCANHAPPEN
A PORTABLE COMPRESSOR CAN FALL FROM A TABLE,
WORKBENCH OR ROOF CAUSING DAMAGETO THE COMPRES-
SOR AND COULD RESULTIN SERIOUSINJURY OR DEATH TO
THE OPERATOR.
HOWTO PREVENT IT
ALWAYS OPERATE COMPRESSOR IN A STABLE SECURE
POSITION TO PREVENT ACCIDENTAL MOVEMENT 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
COIVlPFESSOR
(Fire, Inhalation, Damage to Vehicle Surfaces)
WHAT CAN HAPPEN
FUEL OR OIL CAN LEAK OR SPILL AND COULD RESULT IN FIRE
OR BREATHING HAZARD, SERIOUS INJURY OR DEATH CAN RESULT.
FUEL OR OIL LEAKS WILL DAMAGE CARPET, PAINT OR OTHER SUR-
FACES IN VEHICLES OR TRAILERS.
HOWTO PREVENT IT
IF COMPRESSOR IS EQUIPPED WITH A FUEL SHUT-OFF VALVE,
TURN THE VALVE TO THE OFF POSITION BEFORE TRANSPORT-
ING TO AVOID FUEL LEAKS. IF COMPRESSOR IS NOT EQUIPPED
WITH A FUEL SHUT-OFF VALVE, DRAIN THE FUEL FROM TANK
BEFORE TRANSPORTING TRANSPORT FUEL ONLY IN AN OSHA
APPROVED CONTAINER ALWAYS PLACE COMPRESSOR ON A PRO
TECTIVE MAT WHEN TRANSPORTING TO PROTECT AGAINST DAM-
AGE TO VEHICLE FROM LEAKS. REMOVE COMPRESSOR FROM
VEHICLE IMMEDIATELY UPON ARRIVAL AT YOUR DESTINATION.
$5W.99 -- 8/2/99

GENERAL INFORMATION
You have purchased an air compressor unit consisting of
a one cylinder, single-stage air compressor pump and air
tank. Included are wheels, regulator, gauges, and handle.
This air compressor requires no oil. Now you can enjoy
all the benefits of having an air compressor without ever
having to purchase, add or change oil.
Your air compressor can be used for operating paint
spray
guns, air tools, blow guns, nailers/staplers, air brushes,
and inflator kits. An air pressure regulator is required for
most of the applications.
An inline air filter which removes moisture and dirt from
compressed air should be used where applicable.
An inline regulator can be used if a more precise adjust-
ment of air pressure is needed downstream.
GLOSSARY
CFM: Cubic Feet per Minute.
SCFM: Standard Cubic Feet per Minute; a unit of measure
of air delivery.
PSh Pounds per Square Inch; aunit of measure of pres-
sure.
ASME: American Society of Mechanical Engineers; made,
tested, inspected and registered to meet the standards of
the ASME,
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 and the pressure
switch lever is in "Auto", the motor will restart automati-
cally. The low pressure at which the motor automatically
restarts is called "cut-in pressure."
Cut-Out Pressure: When you turn on your air compressor
and it 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 pres
sure higher than its capacity. The high pressure at which
the motor shuts off is called "cut-out pressure."
CSA: Electrical products sold in Canada are required to be
certified to the applicable CSA standard (s),Canadian Stan-
dards Association (CSA) is a standards writing and safety
testing organization. Products that are CSA certified have
been evaluated and tested and found to meet or exceed
the applicable CSA standard (s) for safety and electrical
performance.
SPECIFICATION CHART
Model No.
Bore
Stroke
Voltage - Single Phase
Minimum Branch Circuit Requirement
Fuse Type
Amperage at Maximum Pressure
Air Tank/Capacity
Approximate Cut-in Pressure
Approximate Cut-out Pressure
SCFM @ 40 psi
SCFM @ 90 psi
919.727360
2 3/8"
1.35"
120
15 amps
Time Delay
15,0
ASME!30 gal. (U.S.)
100
130
7.8
5.5

DESCRIPTION OF OPERATION
Air Compressor Pump: To compress air, the piston moves
up and clown in the cylinder. On the downstroke, air is
drawn in through the air intake valves. The exhaust valves
remain closed, On the upstroke of the piston, air is com-
pressed. The intake valves close and compressed air is
forced out through the exhaust valves, through the outlet
tube, through the check valve and into the air tank.
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.
Pressure Switch: The pressure switch is fitted with a small
lever. It is labeled "Auto/O" for automatic run or off. In the
"O" position, the motor will not run. In the "Auto" position,
it 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.
Pressure Release Valve: The pressure release valve Io+
cated on the side of the pressure switch is designed to
automatically release compressed air trapped within the
compressor head and outlet tube. This short release of air
wilt occur when the air compressor reaches "cut-out" pres-
sure or the unit is shut off. If the air is not released, the
motor will not be able to start when next required.
Flow Valve: The flow valve allows air to flow from the head
as the motor is getting "up to speed". Once the motor
reaches normal operating speed, the flow valve closes and
the pump begins to compress air, thus requiring less amp
draw on initial start.
Safety Valve: If the pressure switch does not shut off the
air compressor at its cut-out pressure setting, the safety
valve will protect the tank against high pressure by "pop-
ping out" at its factory set pressure (slightly higher than the
pressure switch cut-out setting).
Regulator: The air pressure coming FROM the air tank is
controlled by the regulator. The regulator control knob is a
vibration proof design. Lift the regulator knob to engage
and depress the knob to lock. Turn the regulator knob clock-
wise to increase pressure and counter-clockwise to de-
crease pressure. To avoid minor readjustment after making
a change in pressure setting, always approach the desired
pressure from a lower pressure. When reducing from a
higher to a lower setting, first reduce to some pressure less
than that desired, then bring up to the desired pressure.
Depending on the air requirements of each )articular ac-
cessory, the outlet regulated air pressure ma, have to be
adjusted while operating the accessory.
Regulator 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. See "Operating Proce-
dures".
Tank Pressure Gauge: The tank pressure gauge indicates
the reserve air pressure in the tank.
Cooling System: 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 ex-
pelled.
Drain Valve: This valve is located at the bottom of the
tank. To drain accumulated moisture from the tank, pull on
the safety valve until tank pressure is 15 PSI. Unscrew the
drain valve and allow the water to drain.
Tools Needed for Assembly
• a 9/16" socket and an open end wrench for attaching
the wheels • a 3/8" open end wrench or socket to tighten handle screws

ASSEMBLY
Installing Wheels, Handles, Rubber
Foot Strip
THE WHEELS AND HANDLE DO NOT
PROVIDE ADEQUATE CLEARANCE,
STABILITY OR SUPPORT FOR
PULLING THE UNIT UP AND DOWN
STAIRS OR STEP& THE UNIT MUST
BE LIFTED, OR PUSHED UP ARAMP.
1. Attach the handle to the compressor saddle by
inserting the handle inside the compressor saddle and
lining up the two bolt holes on each side. Install the
four screws, two on each side. Tighten securely.
2. Install one shoulder bolt and one nut for each wheel.
Tighten securely. The compressor will sit level if the
wheels are properly installed.
3, Clean and dry underside of air tank leg opposite wheels.
Remove the protective paper strip from the adhesive
backed rubber foot strip. Attach the rubber foot strip
to the bottom of leg. Press firmly into place,
BREAK-IN PROCEDURES
Location of the Air Compressor
Locate the air compressor in a clean, dry and well venti-
lated area. The air filter must be kept clear of obstructions
which could reduce air delivery of the air compressor. The
air compressor should be located at least 12" away from
the wall or other obstructions that will interfere with the flow
of fresh
intake and cooling air.
Lubrication and Oil
This unit needs no lubrication or oiling.
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.
This portable air compressor is equipped with a cord hav-
ing a grounding wire with an appropriate grounding plug.
The plug must be used with an outlet that has been installed
and grounded in accordance with all local codes and ordi-
nances. The outlet must have the same configuration as
the plug. DO NOT USE AN ADAPTER.
Inspect the plug and cord before each use. Do not use if
there are signs of damage.
IMPROPER GROUNDING CAN RESULT IN
ELECTRICAL SHOCK.
Do not modify the plug that has been
provided. If it does not fit the available
outlet, the correct outlet should be
installed by a qualified technician.
If repairing or replacing cord or plug, the grounding wire
must be kept separate from the current-carrying wires.
Never connect the grounding wire to a flat blade plug
terminal. The grounding wire has insulation with an outer
surface that is green with or without yellow stripes.
If these grounding instructions are not completely under-
stood, or if in doubt as to whether the compressor is prop-
erly grounded, have the installation checked by a quali-
fied electrician.
120 Volt Models
white
15 AMP PLUG OUTLET
_ _GROUNDED
GR_N_SG J _
PIN

Voltage and Circuit Protection
Refer to page 5 (Specification Chart) for the voltage and
circuit protection requirements of your compressor. Use
only a fuse or circuit breaker that is the same rating as the
branch circuit the air compressor is operated on. If the
compressor is connected to a circuit protected by fuses,
use only dual element time delay fuses.
Extension Cords
It is preferable to use extra air hose instead of an exten-
sion 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:
12 gauge (AWG) or heavier. (Wire size increases as
gauge number decreases. 10 AWG and 8 AWG may
also be used. DO NOT USE 14 OR 16 AWG.)
a three-wire extension cord that has a three-connec-
tor grounding plug, and a three-slot receptacle that
wi!l accept the plug.
n,: longer than 50 feet
rr] good condition
Break-in Procedure
Serious damage may result if the following
break-in instructions are not closely followed.
This procedure is required only once, before the air com-
pressor is put into service.
1. Set the pressure switch "AUTO/O" lever in the "O"
position for "Off".
2. Plug the power cord into the correct branch circuit
receptacle.
3. Do not attach hose to outlet. Leave the outlet open to
the atmosphere.
4. Turn the regulator clockwise, opening it fully, to
prevent air pressure build-up in the tank.
5. Move the "AUTO/C)" tever to AUTO". The com-
pressor will start,
6. RUN THE COMPRESSOR FOR 15 MINUTES. Make
sure the regulator is open and there is no tank pros-
sure build up.
7. After 15 minutes, close the regulator by turning _t
counterclockwise. The air tank will fill to cut out
pressure and then the motor will stop.

OPERATING PROCEDURES
1. Before attaching air hose or accessories, make sure
the "AUTO/O" lever is set to "O" and the air regulator
is closed.
2. Attach hose and accessories.
TOO MUCH AIR PRESSURE CREATES A
HAZARDOUS RISK OF BURSTING. CARE-
FULLY FOLLOW STEPS 3 AND 5 BELOW
EACH TIME THE COMPRESSOR IS
USED.
Compressed air from the outfit may
contain water condensation. Do not
spray unfiltered air at an item that could
be damaged. Some air operated tools
or devices may require filtered air. Read
the instructions for the air tool or
device.
3. Check the manufacturer's maximum pressure rating
for air tools and accessones. The regulator outlet
pressure must never exceed the maximum pressure
rating.
4. Turn the "AUTO/O" lever to "AUTO" and allow tank
pressure to build. Motor will stop when tank pressure
reaches "cut-out" pressure.
5. Open the regulator by turning it clockwise. Adjust
the regulator to the correct pressure setting. Your
compressor is ready for use.
6. Always operate the air compressor in well-ventilated
areas; free of gasoline or other solvent vapors. Do not
operate the compressor near the spray area.
WHEN YOU ARE FINISHED:
7. Set the "AUTO/O" lever to "O".
8. Turn the regulator counterclockwise and set the
outlet pressure to zero,
9. Remove the air tool or accessory.
10. Open the regulator and allow the air to slowly bleed
from the tank. Close the regulator when tank pressure
is approximately 20 psi.
11. Drain water from air 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 RUP-
TURE.
NOTE:
If drain cock valve is plugged, release
all air pressure. The valve can then be
removed, cleaned, then reinstalled.
12.After the water has been drained, close the drain
valve. The air compressor can now be stored
10

MAINTENANCE
UNIT CYCLES AUTOMATICALLYWHEN POWER IS ON. WHEN DOING MAINTENANCE, YOU MAY BE
EXPOSEDTOVOLTAGESOURCES, COMPRESSEDAIR ORMOVING PARTS.PERSONALINJURIESCAN
OCCUR. BEFOREPERFORMING ANY MAINTENANCE OR REPAIR,UNPLUGTHE COMPRESSORAND
BLEEDOFF ALLAIR PRESSURE.
ALL MAINTENANCE AND REPAIR OPERATIONS NOT LISTED MUST BE DONE BY A QUALIFIED SERVICE TECHNICIAN.
Air Filter - Inspection and Replacement Safety Valve -Inspection
Hot surfaces. Risk of burn. Compressor heads
are exposed when filter cover is removed. Allow
compressor to cool prior to servicing.
"_"-_--Filter Retainer
Filter
Keep the air filter clean at all times. Do not operate the com-
pressor with the air filter removed.
A dirty air filter will not allow the compressor to operate at full
capacity. Before you use the compressor, check the air filter to
be sure it is clean.
Check Valve Cleaning -Replacement
Risk of personal injury. Manifold assembly con-
tains compressed air which can be hazardous.
Manifold gets hot during operation.
Before servicing:
• Unplug or disconnect electrical supply to
compressor.
•Bleed tank of pressure.
Allow compressor to cool.
1. Release all air pressure from air tank and unplug outfit.
2. Remove shroud. (Key Nos. 1 and 2)
3. Loosen the top and bottom nuts and remove the outlet
tube. (Key Nos. 31, 33, and 34)
4. Remove the pressure release tube, fitting, and connecto[
(Key Nos. 25, 26 and 27)
5. Unscrew the check valve (turn counterclockwise) using a
socket wrench. (Key No. 17)
6. Check that the valve disc moves freely inside the check
valve and that 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.
7. Apply a Teflon based pipe sealant to the check valve
threads. Reinstall the check valve (turn clockwise).
8. Replace the pressure release tube and fitting.
9. Replace the outlet tube and tighten top and bottom nuts.
10.Replace the shroud.
If the safety valve does not work properly,
over-pressurization may occur, causing air tank
rupture or an explosion. Before starting compres-
sor, 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.
Motor
The motor has an automatic reset thermal overload protector.
If the motor overheats for any reason, the overload protector
will shut off the motor. The motor must be allowed to coot
down before restarting. The compressor will automatically
restart after the motor cools.
If the overload protector shuts the motor off frequently, check
for a possible voltage problem. Low voltage can also be sus-
pected 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.
Storage
Before you store the air compressor, make sure you do the
following:
1. Review the Maintenance and "Operating Procedures"
sections and perform maintenance as necessary. Be
sure to drain water from the air tank.
2. Protect the electrical cord and air hose from damage
(such as being stepped on or run over). Wind them
loosely around the compressor handle,
Store the air compressor in a clean and dry location.
11

TROUBLESHOOTING GUIDE
PERFORMING REPAIRS MAY EXPOSE VOLTAGE SOURCES, MOVING PARTS OR COMPRESSED AIR SOURCES.
PERSONAL INJURY MAY OCCUR. PRIOR TO ATTEMPTING ANY REPAIRS, UNPLUG THE COMPRESSOR AND
BLEED OFF TANK AIR PRESSURE.
PROBLEM CAUSE CORRECTION
Excessive tank pressure - safety
valve pops off.
Air leaks at fittings or hose.
Air leaks at pressure switch
release valve.
Air leaks in air tank or at air tank
welds.
Pressure switch does not shut off
motor when compressor reaches
cut-out pressure.
Pressure reading on the regulated
pressure gauge drops when an
accessory is used.
Pressure switch cut-out too high.
Tube or hose fittings are not tight
enough.
Defective pressure switch release valve.
Defective or dirty check valve.
Defective air tank.
Air leaks between head and valve Leaking seal.
plate.
It is normal for some pressure drop
to occuE
Move the pressure switch lever to the "O"
position. If the compressor doesn't shut off,
disconnect from the electrical outlet source
and return to a Sears Service Center to re-
place the pressure switch.
Return the compressor to Sears Service Cen-
ter to check and adjust, or replace switch.
Tighten fittings ustng teflon tape where air
can be heard escaping. Check fittings with
soapy water solution. DO NOT OVER-
TIGHTEN.
Return to Sears Service Center for replace-
ment of pressure switch.
Check to see if the pin in the bottom of the
pressure release valve is stuck. If it does not
move freely, return to the Service Center for
replacement of pressure switch.
A defective check valve results in a constant
air leak at the pressure release valve when
there is pressure in the tank and the com-
pressor is shut off. Remove and clean or re-
place check valve. DO NOT OVERTIGHTEN.
Air tank must be replaced. Do not repair the
leak. Return compressor to Sears Service
Center.
DO NOT DRILL INTO, WELD OR OTHER-
WISE MODIFY AIR TANK OR IT WILL
WEAKEN. THE TANK CAN RUPTURE OR
EXPLODE.
Torque head screws to7-10 ft. Ibs. Ifthis does
not stop leak, replace seal.
If there is an excessive amount of pressure
drop when the accessory is used, adjust the
regulator.
NOTE
Adjust the regulated pressure under flow con-
ditions (while accessory is being used).
Air leak from safety valve. Possible defect in safety vatve. Operate safety valve manually by pul{ing on
ring. If valve still leaks, it should be
replaced.
Knocking noise Defective check valve. Remove and clean, or replace.
12

TROUBLESHOOTING GUIDE (Continued)
PROBLEM CORRECTION
Compressor is not supplying
enough air to operate acces-
sories.
CAUSE
Compressor is not large enough for
air requirement.
Motor will not run or restart.
Regulator knob continuous air
leak. Regulator will not shut
off at air outlet.
Restricted air intake filter.
Hole in hose.
Check valve restricted.
Air leaks.
Present tank pressure exceeds
pressure switch "cut-in" pressure.
Fuse blown, circuit breaker tripped.
Motor overload protection switch has
tripped.
Possible defective motor or
capactioc
Paint spray on internal motor parts.
Check valve stuck open, putting
pressure on head.
Pressure release valve on pressure
switch has not unloaded head
pressure.
Broken exhaust varve.
Di_y ordamaged regul_orinternal
paKs.
Check the accessory air requirement. If it is higher
than the SCFM or pressure supplied by your air
compressor, you need a larger compressor.
Clean or replace air intake filter. Do not operate the
air compressor in any paint spray or drywall
sanding area.
Check and replace if required.
Remove and clean, or replace.
Tighten fittings.
Motor will start automatically when tank pressure
drops below "cut-in" pressure of pressure switch.
1. Check fuse box for blown fuse and replace, if
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; only Time Delay fuses
ere acceptable.
3. Check for low voltage conditions and/or
proper extension cord.
4. Disconnect the other electrical appliances
from circuit or operate the compressor on its
own branch circuit.
5. Check for loose electrical connections.
Let motor cool off and overload switch will auto-
matically reset.
Return to Sears Service Center for inspection or
replacement, if necessary.
Have compressor checked at Sears Service
Center. Do not operate the compressor in the paint
spray area. See flammable vapor warning.
Remove and c_ean, or replace the check valve.
Bleed the line by pushing the lever on the pressure
switch to the "0" position; if the valve does not
open, replace it.
Inspect and replace if necessary.
Replace regulator.
13

AIR COMPRESSOR DIAGRAM
?
52 l
34
39
5O
43
48
_47
14

PARTS LIST
KEY
NO. QUANTITY PART NUMBER DESCRIPTION
1 1 CAC-1317 Shroud, Front
2 1 AC-O029 Shroud, Rear
3 1 LA-3143 Label, Performance
4 1 LA-3260 Label, Billboard
5 1 CL-1222 Label, Model Number
6 1 SSF-553-1 Screw #10-24x9/16 Pan HD (Torque 15-35 in./Ibs.)
7 1 SSG-3102 O-ring
x 8 1 CAC-1373 Filter Retainer
x 9 1 CAC-1372 Filter Foam
10 1 AC-0012 Console, Shroud
11 1 CAC-61 Ring Panel Mounting
12 1 AC-0009-1 Gauge RT hand
13 1 AC-0010-1 Gauge LT hand
14 1 AC-0374 Manifold
15 1 SSP-480 Nipple, 1/4 x 2.5"
16 1 LA-2632-1 Label Warning
17 1 AC-0631 Check Valve
18 1 SSP-485 Reducer
19 1 AC-O007 Regulator
22 1 97503734 Safety Valve
23 1 H-2101 Adaptor
24 1 AC-0375 Pressure Switch
26 2 SSP-7811 Nut/Sleeve Assy.
27 1 AC-0028 Pressure Relief Tube
31 1 SSP-7821-1 Nut, Compression (Torque 120-140 in./Ibs.)
32 1 SSG-3105 O-Ring
33 1 SSP-7813 NuVSleeve Assy. (Torque-hand tight plus one turn)
34 1 AC-0097 Outlet Tube
37 1 SUDL-413-2 Cord Assembly
38 2 ACG-18 Cup, Saddle Mount
39 2 91895680 Screw, 1/4_20 x .75 (Torque 9-12 ft./Ibs.)
40 3 ACG-19 Isolator
41 1 TA-4318 Tank - 30 Gal. (U.S.)
42 1 LA-3069 Label, Sears Craftsman
43A 1 LA-2633 Label, Drain Tank (French)
43 1 LA-1978-1 Label, Drain Tank
44 1 SSP-470-1 Hex Reducer Bushing
45 1 SS-2707 Drain Valve
46 1 SUDL-6-1 Strip, Rubber Foot
47 2 CAC-60 Shoulder Bolt
48 2 CAC-4313 Wheel, 10"
49 2 SSF-8080-ZN Nut, Hex 3/8"
50 1 AC-0564 Handle
51 4 SSF-981 Screw
X Key No's. 8 and 9 can be purchased as KK-5041 Muffler/Foam Kit
15

COMPRESSOR PUMP DIAGRAM
67
86
/
54
16

PARTS LIST
KEY
NO.
52
53
54
56
57
+"58
•59
+*60
"61
+ *62
+ 63
64
+"65
66
67
68
69
QUANTITY
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
1
PART NUMBER
MO-9083
AC-0140
AC-0108
SSF-586
SSF-615
AC-0263
ACG-2
DAC-308
ACG-29
SSF-3158-1
SSG-8156
AC-0032
ACG-45
CAC-1371
AC-0037
SSF-927
DAC-161
DESCRIPTION
Motor
Eccentric Bearing Assy.
Fan Kit
Screw 1/4 - 20 (Torque 100-120 in./Ibs.)
Screw (Eccentric, Torque 100-120 in./Ibs.)
Sleeve, Cylinder
Connecting Rod
Compression Ring
Connecting Rod Cap
Screw, #10-24 (Torque 61-70 in./Ibs.)
O-ring
Valve Plate Assy.
O-ring, Head
Muffler
Head
Screw 1/4" - 20 x 1 1/4" (Torque 7-10 ft./Ibs.)
Shim Rolled Edge
NOT ILLUSTRATED
MGP-727360 Owners Manual
ALSO INCLUDED
• H-7040-1
• AC90
• AC100
• AC20
• AC150
• 9-71715
Hose, 3/8" x 25' Long
Quick Connect 1/4" Female (qty 2)
Quick Connect Plug 1/4" Male (qty 2)
Dual Tire Chuck
Blow Gun
Sears Ratchet
• Key No's. 58, 59, 60, 61,62, and 65 can be purchased as KK-4835 Connecting Rod Kit.
+ Key No's 58, 60, 62, 63, and 65 can be purchased as K-0058, Compression Ring Kit.
17

NOTES
18

NOTES
19

SE_A/R6
CRAFTSMAN
MODEL NO.
SERVICE
HOW TO ORDER
REPAIR PARTS
OWNERS MANUAL FOR
PERMANENTLY LUBRICATED
TANK MOUNTED
AIR COMPRESSOR
The model number of your Sears Air Compressor can be found
on the maintenance rabel on the top of the shroud or on the bar
code label on the rear of the air tank.
SERVICE AND REPAIR PARTS
CALL 1-800-665-4455"
Keep this number handy should you require a service call or
need to order repair parts.
If ordering parts make sure you have the name, make and
model no. of the merchandise and the name and number of
the part you wish to order.
*If calling locally, please use one of the following numbers:
Regina -566-5124 Montreal - 333-5740
Toronto - 744-4900 Halifax - 454-2444
Kitchener - 894-7590 Ottawa - 738-4440
Vancouver - 420-8211
WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE
FOLLOWING INFORMATION:
•PART NUMBER •PART DESCRIPTION
•MODEL NUMBER •NAME OF ITEM
All parts listed may be ordered from any Sears Service Center
and most Sears stores.
If the parts you need are not stocked locally, your order will be
electronically transmitted to a Sears Repair Parts Distribution
Center for handling.
Sold By Sears Canada, Inc., Toronto, Ont. MSB 2B8