Craftsman MG1-OILFREE User manual

SEARS
CRAFTSMAN
NOTE: For identificationof Repair
Parts, see separate Parts List
Manual.
IMPORTANT:
Read the Safety Guidelines
and All Instructions
Carefully Before Operating
GENERAL MANUAL FOR
PERMANENTLY LUBRICATED
TANK MOUNTED
AIR COMPRESSOR
SAFETY GUIDELINES
i
iASSEMBLY
;rOPERATION
iMAINTENANCE
iTROUBLESHOOTING
iREPAIR PARTS
Record in the spaces provided.
(1) The model number which can be
found on the maintenance label on
the top of the motor cover or on the
tank.
(2) The code number which can be
found on the small bar code label on
the rear of the air tank.
(3) The Manufacturers Number is lo-
cated 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.
Code No.
Mfg. No.
IMG1-OILFREE 9/17/941
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.

TABLE OF CONTENTS
Page
WARRANTY ............................................................................................................................... 2
SAFETY GUIDELINES ................................................................................................................ 3
WARNING CHART ...................................................................................................................... 3
GLOSSARY ............................................................................................................................... 5
ACCESSORIES FOR USE WITH SEARS AIR COMPRESSORS ................................................. 5
GENERAL INFORMATION .......................................................................................................... 5
DESCRIPTION OF OPERATION .................................................................................................. 6
ASSEMBLY ............................................................................................................................... 7
INSTALLATION AND BREAK-IN PROCEDURES ......................................................................... 7
Location of Air Compressor ................................................................................................... 7
Lubrication and Oil ................................................................................................................ 7
Extension Cords ................................................................................................................... 7
Voltage and Circuit Protection ............................................................................................... 7
Grounding Instructions .......................................................................................................... 8
Break-in Procedure ............................................................................................................... 8
OPERATING PROCEDURES ...................................................................................................... 9
MAINTENANCE ......................................................................................................................... 10
Air Filter- Inspection and Replacement ................................................................................ 10
CheckValve-Replacement .................................................................................................. 10
Safety Valve - Inspection ...................................................................................................... 10
Motor .................................................................................................................................. 10
Storage ............................................................................................................................... 10
TROUBLESHOOTING GUIDE ..................................................................................................... 11
HOWTO ORDER REPAIR PARTS ............................................................................................. 16
FULL ONE YEAR WARRANTY ON AIR COMPRESSORS
Ifthis 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/DEPARTMENT THROUGHOUT THE UNITED STATES 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 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., Hoffman Estates, IL 60179 U.S.A.

SAFETY GUIDELINES
This manual contains information that is important foryou to know and understand. This information relatesto protecting
YOUR SAFETY and PREVENTING EQUIPMENT PROBLEMS. To help you recognize this information, we use the
following symbols, Please read the manual and pay attention to these sections.
URGENT SAFETY INFORMATION - A
HAZARD THAT WILL CAUSE
SERIOUS INJURY OR LOSS OF LIFE.
IMPORTANT SAFETY INFORMATION -
AHAZARD THAT MIGHT CAUSE
SERIOUS INJURY OR LOSS OF LIFE.
Information for preventing damage to
equipment.
NOTE
Information that you should pay special
attention to.
HAZARDS CAN OCCUR IF EQUIPMENT IS NOT USED PROPERLY.
PLEASE READ THE FOLLOWING CHART.
WHAT TO
LOOK FOR WHAT COULD HAPPEN HOW TO PREVENT IT
Hot Parts
Flammable
Vapors
Air Tank
The metal compressor components such as mani-
fold, tubes, etc. become hot when the air compressor
is running. If you touch them, you may be seriously
burned.
It is normal for the motor and pressure switch to spark
when compressor starts or stops. A spark can ignite
vapors from gasoline or solvents, causing afire or
explosion.
Modifications to air compressor components in an
attempt to reach higher air pressure can cause the air
tank to rupture or explode.
Incompatabitity between tank and compressor will
cause the tank to rupture.
Modifications to the air tank will cause it to weaken.
Avoid contact with metal components of the compres-
sor during or immediately after operation. Reaching
under or removing portions of the plastic enclosures
such as the console cover exposes hot surfaces.
Allow compressor to cool prior to servicing.
If spraying a flammable material, provide ample ven-
tilation. Never spray in a closed area. There must be
a flow of fresh air at all times.
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.
Do not adjust, remove or tamper with the safety valve
or pressure switch. If safety valve or pressure switch
replacement is necessary, a part with the same rat-
ings must be used.
Never replace the air tank with a different model or a
larger tank. Return to Authorized Service Center if
replacement is required.
Never drill into, weld or in any way modify the air tank.
The tank may rupture or explode. If leaks develop due
to corrosion or tank is damaged, return to Authorized
Service Center for replacement.

SAFETY GUIDELINES
WHATTO
LOOK FOR
Compressed
Air
Electricity
Toxic Vapors
Unsuitable
Solvents
WHATCOULD HAPPEN
Compressad air can propel dust, dirt or loose par-
ticles it comes in contact with. These propelled par-
ticles may cause serious injury or damage.
Too much air pressure applied to air tools or acces-
sories can cause damage or risk of bursting.
Your air compressor is powered by electricity. Like
any other electdca;_y powered device, if it is not used
properly it may cause electrical shock.
It is normal for compressed air to contain toxic or
irritatingvapors. Such vapors are harmful if inhaled.
Certain materials you are spraying (like paint, weed
killer, sand or insecticide) can be harmful if you inhale
them.
The solvents 1,!,1 - Trichloroethane and Methylene
Chloride can chemically react with aluminum used in
paint spray guns, paint pumps, etc., and cause an
explosion. These solvents can also react with galva-
nized components and cause corrosion and weaken-
ing of parts. This does not affect your air compressor
- but it may affect the equipment being used.
HOWTO PREVENT IT
Never point any nozzle or sprayer toward a person or
any part of the body.
Always wear safety goggles or glasses when using
the air compressor.
Always turn the air compressor off before attaching
or removing accessories.
Check the manufacturer's pressure rating for air
tools and accessories. Regulator outlet pressure
must never exceed the maximum pressure rating.
Always unplug the air compressor prior to mainte-
nance or repair.
Never use the air compressor outdoors when it is
raining.
Always plug the cord into an electrical outlet with the
specified voltage and adequate fuse protection.
Never directly inhale the compressed air produced by
this unit.
Read labels and safety data for all materials you spray.
Follow all safety precautions.
Use amask or respirator if there is a chance of inhaling
toxic sprayed materials. Masks and respirators have
limits and will only provide protection against some
kinds and limited amounts of toxic material. Read
mask and respirator instructions carefully. Consult
with a safety expert or industrial hygienist if you are not
sure about the use of a certain mask or respirator.
Ifthe material you intend to spray contains the solvents
listed at left (read the label or data sheet), do not use
accessories that contain aluminum or galvanized
parts. You must either change the material you intend
to spray, or use only stainless steel spray equipment.

GLOSSARY
CFM: Cubicfeet perminute,
SCFM: Standard cubic feet per minute; a unit of measure
ofairdelivery.
PSIG: Pounds per square inchgauge; a unit of measure of
pressure.
ASME: Amedcan Society of Mechanical Engineers; made,
tested, inspected and registered to meet the standards of
the ASME.
U.L. Listed: This product is Listed by Underwriters
Laboratories, Inc. (UL). Samples ofthis product have been
evaluated by UL and meet applicable UL Standards for
Safety.
Cut-In Pressure: While the motor isoff, airtank 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 re-starts is called "cut-in pressure."
Cut-Out Pressure: When you turn on your aircompressor
and it begins to run, air pressure in the air tank begins to
build. It buildsto 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."
ACCESSORIES FOR USE WITH
SEARS AIR COMPRESSORS
•SPRAY GUNS
,BLOWGUNS
•AIR CAULKING GUNS
•PNEUMATIC POWER
WASHERS
.SANDBLASTERS
•AIR BRUSHES
•AIR LINE FILTERS
"TIREAIRCHUCKS
°PAINTTANKS
"AIRTANKS
•INFLATOR KITS
•QUICKCONNECTOR SETS
(various sizes)
.VISCOSIMETER
•AIR PRESSURE REGULATORS
-OIL FOG LUBRICATORS
,AIRTOOLS:
Sanders
Drills
Impact Wrenches
Hammers
.AIRHOSE:
1/4", 5/16" or 3/8" I.D.
in various lengths
•NAI LER/STAPLERS
Decking
Farming
Roofing
Siding
Finishing
Carpentry
Upholstery
Picture Framing
•DRAIN CLEANER
-DUSTER GUN
GENERAL INFORMATION
You have purchased an air compressor unit consisting of a
one cylinder, single-stage air compressor pump and air
tank. included are an air hose, tire air chuck, wheels,
regulator, gauges, and handle.
This air compressor requires no oil. Nowyou can enjoy all
the benefits ofhaving an air compressorwithout ever having
to purchase, add or change oil.
Your air compressorcan be used for operating paint spray
guns, air tools, caulking guns, grease guns, air brushes,
sandblaster, or inflating tires and plastic toys, spraying
weed killers, insecticides, etc. An air pressure regulator is
required for most of the applications.
An air filter which removes moisture and dirt from com-
pressed air should be used where applicable.
These accessories can be purchased from most Sears
Parts Departments.

DESCRIPTION OF OPERATION
Air Compressor Pump: To compress air, the piston
moves up anddown inthe cylinder. On the downstroke, air
isdrawn inthroughtheairintake valves. The exhaust valves
remain closed. On the upstroke of the piston, air is
compressed. The intake valves close and compressed air
isforced outthrough the exhaust valves, throughthe outlet
tube, throughthe check valve and intotheairtank. Working
air isnot available until the compressor has raised the air
tank pressure above that required at the air outlet.
Check Valve: When the air compressor isoperating, the
check valve is"open",allowing compressed airto enterthe
air tank. When the air compressor reaches "cut-out"
pressure,the checkvalve "closes", allowingair pressureto
remain inside the air tank.
Pressure Release Valve: The pressure release valve lo-
cated 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 roaches
"cut-out" pressure or isshut off. Ifthe air is not released, the
motor will not be able to start. The pressure release valve
allows the motor to restart freely. When the motor stops
running, airwill be heard escaping from the valve for a few
seconds. No air should be leaking when the motor is
running.
PressureSwitch: The pressure switch automatically starts
the motor when the air tank pressure drops below the
factory set "cut-in" pressure. Itstops the motor when the
airtank pressure reaches the factory set"cut-out"pressure.
Safety Valve: If the pressure switch does not shut off the
air compressor at itscut-out pressure setting, the safety
va lyewillprotectthetankagainst highpressureby"popping
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
controlledby the regulator. Turn the regulator knobclock-
wise to increase pressure and counter-clockwise to de-
creasepressure.To avoid minor readjustment aftermaking
a change inpressure setting, always approachthe desired
pressure from a lower pressure. When reducing from a
highertoa lowersetting, first reduce to some pressure less
than that desired, then bring up to the desired pressure.
Depending on the air requirements of each particular
accessory,theoutletregulatedair pressure may havetobe
adjusted while operating the accessory.
Outlet Pressure Gauge: The outlet pressure gauge indi-
cates the air pressure available at the outlet side of the
regulator. This pressure iscontrolled bythe regulator and
isalways lessor equalto the tank pressure. See "Operat-
ing Procedures".
Tank PressureGauge: 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
isan engineered fan. It isperfectly normal forthis fan to blow
air through the vent holes in large amounts. You knowthat
the cooling system is working when air is being expelled.
Tools Needed for Assembly
•a 9/16" socket or 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 PRO-
VIDE ADEQUATE CLEARANCE, STABILITY
OR SUPPORT FOR PULLING THE UNIT UP
AND DOWN STAIRS OR STEPS. THE UNIT
MUSTBE LIFTED, OR PUSHED UPA RAMP.
.Attach the handle to the compressor saddle by insert-
ingthe handle inside the compressorsaddle and lining
up the two bolt holes on each side. Install the four
screws, two on each side. Tighten securely.
.
It will be necessary to brace or support one
side of the outfit when installing the wheels
because the compressor will have a ten-
dency to tip.
Install one shoulder bolt and one nut for each wheel.
Tighten securely. The outfit will sit level if the wheels
are properly installed.
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.
INSTALLATION AND BREAK-IN PROCEDURES
Location of the Air Compressor
Loca;.athe air compressorin a clean, dry and well ventilated
area. The airfilter must be kept clear of obstructionswhich
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
air. The air compressor head and shroud are designed to
allow for proper cooling.
Lubrication and Oil
•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 Iongerthan 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.)
This unit needs no lubrication or oiling.
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.
Voltage and Circuit Protection
Referto your Parts List Manual forthe voltage and circuit
protction requirements of your compressor. Use only afuse
or circuit breaker that is the same rating as the branch
circuit the aircompressor is operated on. If the compressor
is connected to a circuit protcted by fuses, use only dual

RefertoPartsListManual for your compressor. Certain air
compressor models can be operated on a 15 amp circuit if:
1. Voltage supply to circuit is normal.
2. Circuit is not used to supply any otherelectdcal 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.
If any of the above conditions cannot be met, orif 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.
;element time delay fuses, as noted in that Service Bulletin.
GROUNDING INSTRUCTIONS
If repairing cord or plug, the grounding wire must be kept
separate from the current-carrying wires. Never connect the
grounding wire to aflat blade plug terminal. The grounding
wire has insulation with an outer surface that isgreen-with
or without yellow stripes.
If these grounding instructions are not completely under-
stood, or if in doubt as to whether the compressor is
properly grounded, have the installation checked by a
qualified electrician.
120 Volt Models
wlllte
1,, p PLU OUTL.
n G.ouNoED
GROUNDING -7
PIN
240 Volt Models
20 AMP PLUG OUTLET
o.oo.o,._,I
PIN
RISK OR 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. 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 USEAN ADAPTER.
Inspect the plug and cord before each use. Do not use if
there are signs of damage.
IMPROPER GROUNDING CAN RESULT IN ELEC-
TRICAL 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 electrican.
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 OFF/AUTO lever in the
"OFF" position.
2. Plug the power cord into the correct branch circuit
receptacle.
3. Turn the regulator clockwise, opening it fully, to
prevent air pressure build-up in the tank.
4. Movethe OFF/AUTO leverto"AUTO". Thecom-
pressor will start.
5. Run the compressor for 15 minutes. Make sure the
regulator is open and there is no tank pressure build-
up.
6. After 15 minutes, close the regulator by turning it
counterclockwise. The air tank will fill to cut-out
pressure and then the motor will stop.
Refer to "Operating Procedures".

.
OPERATING PROCEDURES
Before attaching air hose or accessories, make sure
the OFF/AUTO lever is set to "OFF" and the air
regulator is closed.
2. Attach hose and accessories,
6. Always operate the air compressor in well-venti
lated areas; free of gasoline or other solvent
vapors.
Do not operate the compressor near the spray
area,
.
.
.
TOO MUCH AIR PRESSURE CREATES
AHAZARDOUS RISK OF BURSTING.
CAREFULLY FOLLOW STEPS 3AND 5
EACH TIME THE COMPRESSOR IS
USED,
Compressed air from the outfit may contain
water condensation. Do not spray unfil-
tered 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.
Check the manufacturer's maximum pressure rat-
ing for air tools and accessories. The regulator
outlet pressure must never exceed the maximum
pressure rating. If your compressor is not supplied
with a regulator with gauge, install one before
using accessories.
Turn the OFF/AUTO lever to "AUTO" and allow tank
pressure to build. Motor will stop when tank pressure
reaches "cut-out" pressure.
Open the regulator by turning itclockwise. Adjust the
regulator to the correct pressure setting. Your com-
pressor is ready for use.
When you are finished:
7. Set the "OFF/AUTO" lever to "OFF".
8. Turn the regulator counterclockwise and set the out-
let 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 theregulator 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 RUPTURE.
With tank pressure at approximately 20 psi, open the
drain cock or drain valve.
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
drain cock or drain valve. The air compressor
can now be stored.

MAINTENANCE
UNITCYCLESAUTOMATICALLYWHEN POWERIS ON. WHEN DOING MAINTENANCE, YOU MAY BE EXPOSEDTOVOLTAGE
SOURCES, COMPRESSEDAIRORMOVING PARTS. PERSONALINJURIESCANGCCUR. BEFORE PERFORMINGANY
MAINTENANCE OR REPAIR, UNPLUG THE COMPRESSORAN DBLEED 0 FFALLAIR PRESSURE.
ALL MAINTENANCE AND REPAIR OPERATIONS NOT LISTED MUST BE DONE BY
QUALIFIED SERVICE PERSONNEL.
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.
Filte__ Filter Retainer
Keep the air filter clean at all times. Do not operate the
compressorwith the air filter removed.
Adirty air filterwill not allowthe compressor to operate at
full capacity. Beforeyou usethe compressor, checkthe air
filter to be sure it is clean.
CheckYalve - Replacement
Before servicing:
•Unplug or disconnect electrical supply to
compressor.
•Bleed tank of pressure.
•Allow compressor to cool.
1. Release all air pressurefrom airtank and unplug outfit.
2. Removeshroud.
3. Loosen the top and bottom nuts and remove the outlet
tube.
4. Removethe pressure releasetube and fitting.
5. Unscrewthe check valve (turn counterclockwise) using
a socket wrench.
6. Checkthatthevalve disc moves freely insidethe 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 sealant tothe check valve threads. Reinstall the
checkvalve (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 start-
ing 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.
Motor
The motor has an automatic reset thermal overload
protector, tf the motor overheats for any reason, the
overload protectorwill shut offthe motor. The motor
must be allowed to cool down before restarting. The
compressor will automatically restart after the motor
cools.
Ifthe overload protectorshuts the motor off frequently,
check for a possible voltage problem. Lowvoltage can
also be suspected when:
1. The motor does not get up to full power or speed.
2. Fusesblowout whenstartingthemotor;lightsdim
Storage
Before you store the air compressor, make sure you do
the following:
t. Reviewthe"Maintenance"and"Operating Proce-
dures" sections and perform maintenance asnec-
essary. 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.
10

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 TAN KAIR PRESS URE.
PROBLEM
Excessive tank pressure - safety
valve pops off.
Air leaks at fittings.
Air leaks at pressure switch re-
lease valve,
Air leaks in airtank or at air tank
welds.
CAUSE CORRECTION
Pressure switch does not shut off motor
when compressor reaches "cut-out"
pressure.
Pressure switch "cut-out" too high,
Tube fittings are not tight enough.
Defective pressure switch release
valve.
Defective flappervalve in manifold.
Check valve seat damaged.
Defective air tank.
Air leaks between head and Leaking seal.
valve plate.
Pressure reading on the regu-
lated pressure gauge drops
when an accessory is used,
It is normal for "some" pressure drop
to occur.
Move the pressure switch lever to the "OFF" position.
Ifthe outfit doesn't shut off, and the electrical contacts
are welded together, replace the pressure switch.
Return the outfit to Sears Service Center to check and
adjust, or replace switch.
Tighten fittings where air can be heard escaping.
Check fittings with soapy water solution. DO NOT
OVERTIGHTEN.
Remove and replace the release valve.
Check to see if the pin in the bottom of the pressure
release valve is stuck. If it does not move freely,
replace the valve.
A defective flapper valve results in a constant air leak
at the pressure release valve when there is pressure
in the tank and the compressor is shut off. Remove
and clean or replace valve.
Inspect and replace upper manifold assembly.
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.
_Torque head screws to 8 ft. Ibs. If this does not stop
leak, replace seal
If there is an excessive amount of pressure drop
when the accessory is used, adjust the regulator
following the instructions on page 6.
NOTE
Adjust the regulated pressure under flow condi-
tions (while accesory is being used).
11

TROUBLESHOOTING GUIDE (Continued)
CAUSE CORRECTION
Possible defect in safety valve. Operate safety valve manually by pulling on ring. If
valve still leaks, it should be replaced.
Remove and clean, or replace.
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.
Clean or replace air intake filter. Do not operate the
air compressor in the paint spray area.
Check and replace if required.
Remove and clean, or replace.
Tighten fAings. (See Air Leaks Section of Trou-
bleshooting Guide.)
Let motor cool off and overload switch will automati-
cally reset.
Motor will start automatically when tank pressure
drops below "cut-in" pressure of pressure switch.
Check for proper gauge wire and cord length.
Remove and clean, or replace.
Check wiring connection inside pressure switch and
terminal box area.
Return to Sears Service Center for inspection or
replacement, if necessary.
Have checked at Sears Service Center. Do not
operate the compressor in the paint spray area. See
flammable vapor warning.
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 are
acceptable.
3. Check for low voltage conditions and/or proper
extension cord.
4. Disconnect the other electrical appliances from
circuit or operate the compressor in its own
branch circuit.
Bleed the line by pushing the lever on the pressure
switch to the "off" position; if the valve does not open,
replace it.
Inspect and replace if necessary.
PROBLEM
Air leak from safety valve.
Knocking Noise
Compressor is not supplying
enough air to operate accesso-
ries.
Motor will not run or restart.
Defective check valve.
Prolonged excessive use of air.
Compressor is not large enough for
air requirement.
Restricted air intake filter.
Hole in hose.
Check valve restricted.
Air leaks.
Motor ovedoad protection switch has
tripped.
Tank pressure exceeds pressure
switch "cut-in" pressure.
Wrong gauge wire or length of exten-
sion cord.
Check valve stuck open.
Loose electrical connections.
Possible defective motor or capacitor.
Paint spray on internal motor parts.
Fuse blown, circuit breaker tripped.
Pressure release valve on pressure
switch has not unloaded head pres-
sure.
Broken exhaust valve.
/
Regulator knob continuous air I Dirty or damaged regulator internal
leak. Regulator will not shut off /. parts.
at air outlet. !
}
.............. i
12
Clean or replace regulator, or internal parts.

SERVICE NOTES
13

SERVICE NOTES
14

SERVICE NOTES
15

SEARS
PARTS
MANUAL
IF YOU NEED REPAIR
PART5:
For Replacement Parts Ordering,
Call This Toll-Free Number:
1-800-366-PART
(1-800-366-7278)
WHEN ORDERI NG REPAIR PARTS,
ALWAYS GIVE THE FOLLOWING
INFORMATION:
•MODEL NUMBER,
•PART NUMBER.
•PART DESCRIPTION.
•NAME OF ITEM.
CRAFTSMAN
PERMANENTLY LUBRICATED
AIR COMPRESSOR
MODEL NO.
The model number of your Sears Compressor can be found on
the label which is located on the top of the shroud.
REPAIR SERVICE
Now that you have purchased yourSears Craftsman Air
Compressor, should a need ever exist for repair service, simply
take it to any Sears Repair Center.
For The Location Of A Sears Repair Center Near
You,
Call This Toll-Free Number:
1-800-488-1222
FULL ONE YEAR WARRANTY
AIR COMPRESSORS
If this air compressor fails due to a defect in material or
workmanship within one year from the date of purchase, RE-
TURN IT TO THE NEAREST SEARS REPAIR CENTER
THROUGHOUT THE UNITED STATES AND SEARS WILL
REPAIR IT, FREEOF CHARGE.
Ifthisair compressoris used for commercialor 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, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.