Craftsman 919.157251 User manual

SEAR8
OWNERS
MANUAL
MODEL NO.
919.157251
|MI_ORTAN_:___
Re_l-_e Safety Guideines
and All Instructions Carefully
Before Operating.
CRRFTSMRN,
GASOLINE ENGINE
AIR COMPRESSOR
II
ASSEMBLY
OPERATION
MAINTENANCE
REPAIR PARTS
Record in the spaces provided.
(1) The model number which can be found
on the maintenance label onthe front of
the air tank.
(2) The cede number which can be found
onthefoil labelonthe rear ofthe airtank.
(3) The Manufacturers Number {ASME
Code Compressor only) is located on
the met a_data platewhich iswelded
onto the backside of the air tank. (This
data plate ispainted the same color as
thetank.)
(4) The Engine Manufacturer's name is
located onthe frontofthe engine.
(5) The EngineModel Number stamped on
top oftheengine.
(6) The EngineType which can be found
stamped on top of the engine.
Retain these numbers for future
reference.
Model No.
Code No.
Mfg. No,
Engine Mfg. Name
Engine Mfg. Model
Engine Mfg, Type
• This product Is not equipped with a spark erresUlng muffler. If the product will be used around flammable
materials, or on land covered with materials such as agricultural crops, forest, brush, grass, or other similar
items, then an approved spark arrestor must be installed and is legally required in the state of California. It is a
violation of California statutes section 130050 and/or sections 4442 and 4443 of the California Public Resources
Code, unless the engine is equipped with a spark arrestor, as defined in section 4442, and maintained in effective
working order. Spark arrestors are also required on some U, S. Forest service land and may also be legally
required under other statutes and ordinances.
• Engine exhaust from this product contains chemicals known, in certain quantities, to cause cancer, birth defects or
other reproductive harm.
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
D20396 Rev, 0 2/16/00

Page
SAFETY GUIDELINES ...................................................................................................... 3
WARNING CHART ........................................................................................................... 3-5
SPECIFICATION CHART ................................................................................................. 6
GLOSSARY ...................................................................................................................... 6
ACCESSORIES FOR USE WTIH
SEARS AIR COMPRESSORS ...................................................................................... 6
GENERALINFORMATION ............................................................................................... 7
DESCRIPTION OF OPERATION ...................................................................................... 7
ASSEMBLYINSTRUCTIONS ........................................................................................... 8
Items You Will Need to Assemble Your Compressor .................................................. 8
Installing Handle, Foot Extension Bracket, Wheels, Shut Off Valve ............................ 8
INSTALLATION AND BREAK-IN
PROCEDURES ................................................................................................................ 9-10
Location of Air Compressor ........................................................................................ 8
Permanent Installation ............................................................................................... g
Lubrication, Oil and Gasoline ...................................................................................... 9
Break-In Procedures ................................................................................................... 10
OPERATING PROCEDURES ............................................................................................ 11
MAINTENANCE .............................................................................................................. 11-14
AirCompressor ........................................................................................................... 11
Compressor Pump Air Intake Filter-- Inspection and Replacement .......................... i. 11
Compressor Oil-- Checking and Changing ................................................................ 11
Check Valve--Inspection and Replacement .............................................................. 11
Safety Valve -- Inspection and Replacement ............................................................. 11
Engine-- Oil Change and Air Cleaner ......................................................................... 11
Engine--Adjustments ............................................................................................... 11
Belt-- Replacement ................................................................................................... 13
Pulley and Flywheel -- Alignment .............................................................................. 14
STORAGE ........................................................................................................................ 13
TROUBLESHOOTING GUIDE ......................................................................................... 15-16
AIR COMPRESSOR DIAGRAM ........................................................................................ 18
Parts List .................................................................................................................... 19
COMPRESSOR PUMP DIAGRAM .................................................................................... 20
Parts List .................................................................................................................... 21
HOWTO ORDER REPAIR PARTS ....................................................................... Back Cover
WARRANTY ......................................................................................................... BackCover
This manual contains information that is important for you to know and understand. This information relates to
protecting YOUR SAFETY and PREVENTING EQUIPMENT PROBLEMS. To help you recognize this information,
we use the symbols to the right. Please read the manuar and pay attention to these sections.
DANGER indicates an imminently hazardous situation
which, if not avoided, will result in death or serious
iniurv.
WARNING indicates a potentially hazardous situa-
tion which, if not avoided, could result in death of
CAUTION indicates apotentially hazardous situation
which, if not avoided, _ result in minor or moder-
ate in'lUnt.
CAUTION used without the safety alert symbol indi
cates a potentially hazardous situation which, if not
avoided, _ result in i_roDertv damaae.
2 - ENG
D20396 Rev 0 2/16/00

___ SAV_TIONS I_
IMPROPER OPERATION OR MAINTENANCE OF THIS PRODUCT COULD RESULT IN SERIOUS INJURY AND PROPERTY
DAMAGE. READ AND UNDERSTAND ALL WARNINGS AND OPERATING INSTRUCTIONS BEFORE USING THIS EQUIPMENT.
.so°xosoo [ li l
WHAT CAN HAPPEN
GASOLINE AND GASOLINE VAPORS CAN BECOME IGNITED
BY COMING INTO CONTACT WITH HOT COMPONENTS SUCH
AS THE MUFFLER, FROM ENGINE EXHAUST GASES, OR
FROM AN ELECTRICAL SPARK.
COMBUSTIBLE MATERIALS WHICH COME INTO CONTACT
WITH HOT ENGINE PARTS CAN BECOME IGNITED,
UNATTENDED OPERATION OF THIS PRODUCT COULD
RESULT IN PERSONAL iNJURY OR PROPERTY DAMAGE,
HOW TO PREVENT IT
TURN ENGINE OFF AND ALLOW IT TO COOL BEFORE
ADDING FUEL TO THE TANK. EQUIP AREA OF OPERATION
WITH AFIRE EXTINGUISHER CERTIFIED TO HANDLE
GASOLINE OR FUEL FIRES,
ADD FUEL OUTDOORS IN AWELL VENTILATED AREA. MAKE
SURE THERE ARE NO SOURCES OF IGNIT[ON, SUCH AS
CIGARE-FrES NEAR REFUELING LOCATION.
OPERATE COMPRESSOR IN A CLEAN, DRY,WELL VENTILATED
AREA A MINIMUM OF FORTY-EIGHT INCHES FROM ANY BUILD-
ING, OBJECT OR WALL. DO NOT OPERATE UNIT INDOORS
OR IN ANY CONFINED AREA.
STORE FUEL IN A SECURE LOCATION AWAY FROM
COMPRESSOR.
ALWAYS REMAIN IN AI-FENDANCE WITH THE PRODUCT
WHEN IT iS OPERA'RNG.
RISK OF BURSTING I_
IRTA_: THE FOLLOWING CONDITIONS COULD LEADTO AWEAKENING 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_EMPTED REPAIRSTO 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.
HOW TO PREVENT IT
DRAIN TANK DAILY OR AFTER EACH USE, iF TANK DEVELOPS
ALEAK, 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 AT[AGHMENTS.
THE TANK IS DESIGNED TO WITHSTAND SPECIFIC OPERATING
PRESSURES. NEVER MAKE ADJUSTMENTS OR PARTS
SUBSTITUTIONS TO ALTER THE FACTORY SET OPERA_NG
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
A_rACHMENTS. NEVER USE COMPRESSOR TO INFLATE
SMALL LOW-PRESSURE OBJECTS SUCH AS CHILDREN'S
TOYS, FOOTBALLS, BASKETBALLS. ETC.
3-ENG D20396 Rev 0 2/16/00

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.
HOW TO 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 ACCES-
SORIES.
RISK TO BREATHING
WHAT CAN HAPPEN
BREATHING EXHAUST FUMES FROM ENGINE WILL CAUSE
SERIOUS INJURY OR DEATH.
THE COMPRESSED AIR FROM YOUR COMPRESSOR IS NOT
SAFE FOR BREATHING! THE AIR STREAM MAY CONTAIN
CARBON MONOXIDE, TOXIC VAPORS OR SOLID PARTICLES
FROM THE TANK.
SPRAYED MATERIALS SUCH AS PAINT, PAINT SOLVENTS, PAINT
REMOVER, INSECTICIDES, WEED KILLERS, CONTAIN HARM-
FUL VAPORS AND POISONS.
HOW TO 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 FROM MOVING PARTS
WHAT CAN HAPPEN
THE ENGINE CAN START ACCIDENTALLYIF THE FLYWHEELIS
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 COMPRES-
SOR 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 COMPRESSOR WITH GUARDS OR
COVERS WHICH ARE DAMAGED OR REMOVED
ANY REPAIRS REQUIRED ON THIS PRODUCT SHOULD BE
PERFORMED BY AUTHORIZED SERVICE CENTER PERSON-
NEL.
4-ENG
D203_ Rev 0 2/16/0Q

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.
HOW TO 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
WHAT CAN HAPPEN
A PORTABLE COMPRESSOR CAN FALL FROM A TABLE,
WORKBENCH OR ROOF CAUSING DAMAGE TO THE COMPRES-
SOR AND COULD RESULT IN SERIOUS INJURY OR DEATH TO
THE OPERATOR.
HOW TO 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 I n
COMPRESSOR
(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 RE-
SULT. FUEL OR OIL LEAKS WILL DAMAGE CARPET, PAINT OR
OTHER SURFACES 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
PROTECTIVE MAT WHEN TRANSPORTING TO PROTECT AGAINST
DAMAGE TO VEHICLE FROM LEAKS. REMOVE COMPRESSOR
FROM VEHICLE IMMEDIATELY UPON ARRIVAL AT YOUR DESTI-
NATION.
GSW.99 -- 9122199
5 - ENG D20396 F!ev 0 2/16/00

Model No.
Engine Horsepower
Compressor DisplacementCFM
CompressorBore
Compressor Stroke
Air Tank/Capacity- Gallons
Approximate UnloaderResetPressure
Approximate UnloaderBlow-OffPressure
SCFM @ 40 psig
SCFM @ 90 psig
919.157251
5
15.3
2 7/8"
2"
20ASME
90
110
12.0
10.0
SCFM: Standard cubic feet per minute; a unit of
measure of air delivery.
PSIG: Pounds per square inchgauge; a unitof
measure ofpressure.
ASME: American Society of Mechanical Engineers;
made, tested, inspected and registeredto meet the
standardsof theASME.
CFM: Cubic feet per minute.
Unloader Blow-Off Pressure: All models are continu-
ously running outfits controlled by tank pressure when
the maximum tank pressure is obtained, the unloader
valve will blow-off. This will cause the compressor to
exhaust the air to the atmosphere and not the tank.
This decreases the load on the engine and allows it to
run at a near no-load condition.
Unloader Reset Pressure: When the tank pressure
drops to apredetermined point, the unloader valve
closes. The tank pressure will now increase until it
reaches the unloader blow-off pressure.
The following accessories are available through the current general sales catalog or at full-line Sears stores,
•SPRAY GUNS
•BLOW GUNS
• AIR CAULKING GUNS
eAIR POWER WASHER
"SANDBLASTERS
• AIR BRUSH SET
oIN-LINE FILTERS
• TIRE CHUCKS
•PAINT TANKS
•AIR CARRY TANKS
•INFLATOR KITS
•QUICK CONNECTOR SETS
(various sizes)
•AIR PRESSURE REGULATORS
•OIL FOG LUBRICATORS
•AIR TOOLS:
Sanders
Drills
Impact Wrenches
Rachets
=AIR HOSE:
1/4" or 3/8" I.D.
in various lengths
6 - ENG
020396 Rev 02/16/00

You have purchased an air compressor unit consisting of
a 2 cylinder, single-stage air compressor pump and air
tank. Included with portable compressors are wheels,
gauges, and handle.
Your air compressor can 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 usually required for most of
these applications. Regulators can be purchased from
most Sears stores or through the Sears Power Tool
Catalog.
Separate air transformers which combine the functions or
air regulation and/or moisture and dirt removal should be
used where applicable.
ON/OFF
SWITCH-_-_
UNLOADER VALVE
VALVE
SHUTOFF VALVE
CHECK
VALVE
Figure 1
Air Compressor Pump: To compress air, the pistons
move up and down in the cylinders. On the downstroke,
air is drawn in through the air intake filter and then through
the air intake valves. The exhaust valve remains closed.
On the upstroke of the piston, air is compressed. The
intake valves close and compressed air is forced out
through the exhaust valve, through the outlet tube, through
the check valve and into the air tank. Working air is not
available until the compressor has raised airtank pressure
above that required at the air outlet.
Throttle Control: Athrottle control has been incorporated
as an extra feature. When maximum tank pressure is
reached and the unloader valve unloads air, it also
activates athrottle control on the engine. This gas saving
featu re holds the engine at a factory-set idling speed until
air pressure inthe air tank drops to reset pressure; it then
reactivates the throttle control and accelerates the engine
to full throttle.
Unloader Valve: All models are continuously running
outfits controlled by tank pressure. When the maximum
tank pressure is obtained, the unloader valve will exhaust
the compressed air to the atmosphere (blow-off). When
the pressure drops to apredetermined point, the unloader
valve closes and causes the tank pressure to increase.
Safety Valve: If the pressure switch does not shut off the
air compressor at or near its cut-out pressure setting, the
safety valve will protect against high pressure by "pop-
ping out" at its factory set pressure (slightly higherthan the
pressure switch cut-out setting).
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. If the air is not unloaded, the
motor will try to start, but will be unable to. The check valve
allows the motor to restart freely.
Shut Off Valve: Turn the knob counterclockwise to open
the valve and clockwise to close.
7 - ENG D20396 Rev 0 2/16/00

Item You Will Need To Assemble Your Compres-
sor
•20 oz. of oil for the engine (see Briggs &Stratton
instructions). Use 10W30 high quality motor oil
• 16 oz. of Sears compressor oil or SAE 20-20W
• teflon tape
• a9/16" socket oropen-endwrench ferattachingthe
wheels
• a 7/16" open-end wrench for attaching the foot
extension bracket and rubber feet
•aW' open-end wrench for attaching the shut-off
valve and air outlet adapater.
I_,V;l_,1:]Oll_[€
Installing Handle, Foot Extension Bracket,
Wheels, Outlet Valve
THE WHEELS AND HANDLE DO NOT
PROVIED ADEQUATE CLEARANCE, STABIL-
ITY OR SUPPORT FOR PULLING THE UNIT
UP AND DOWN STAIRS OR STEPS. THE
UNIT MUST BE LIFTED OR PUSHED UP A
RAMP.
Oo not use the engine gas tank as a sup-
port for lifting the air compressor.
1. Insert the handle into pockets under the tank saddle.
Put one set screw through hole in one side of tank
saddle and tighten down on handle.
EXCESSIVE TANK VIBRATION CAN
WEAKEN THE AIR TANK AND CAUSE
RUPTURE OR EXPLOSION. RUBBER FEET
MUST BE INSTALLED.
2, Attach the rubber feet to the bottom of the foot
extension bracket, Attach foot extension bracket to
the air tank bracket. Use one cap screw, one lock
washer, and one hex nut at each end. Tighten.
3. The leg bracket on the underside of the air
compressor tank has 2 holes on each side for
mounting the wheels. Place one shoulder bolt through
the hole in a wheel. Next, push the bolt through the
LOWER hole ofthe leg bracket and screw on one
hexlocking nut. The special locking nut does not turn
freely. Tighten the nut firmly until it contacts the tan k
leg. See pg. 16. The outfit will sit level if the wheels
are properly installed.
4. Apply teflon tape to the tapered pipe threads on
the adapter and tighten into the manifold. Install the
swivel connection end of the shut-off valve to the
straight threaded end of the adapter (pipe sealant is
not required) and tighten this connection. See photo
below.
It may be necessary to brace or support
one end of the outfit when attaching the
wheels and the foot extension bracket
because the air compressor will have a
tendency to tip before both wheels are
assembled.
SWFVEL MANIFOLD
SHUT-OFF CONNECTION
VALVE
5. Attach the spark plug wire to the spark plug.
Location of the Air Compressor
.I_l¥1_I_ U_f_:
EXCESSIVE TANK VIBRATION CAN WEAKEN
THE AIR TANK AND CAUSE RUPTURE OR
EXPLOSION. RUBBER FEET MUST BE
INSTALLED.
D20396 Rev 0 2116/00
Operate the air compressor in a clean, dry and well
ventilated area. The air intake 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 walls or other obstructions that
could interfere with the flow of air through thefan bladed
flywheel. The air compressor crankcase and head are
designed with fins to provide proper cooling, if humidity
is high, Sears air filter can be installed to remove
excessive moisture. Closely follow the instructions pack -
aged with the filter for proper installation.
8-ENG

Permanent Installation Lubrication, Oil and Gasoline
BOLTING LEGS TO A STIFF SURFACE CAN
CAUSE TANK RUPTURE RESULTING IN
SERIOUS INJURY OR DAMAGE. DO NOT
PERMANENTLY MOUNT COMPRESSOR TO
ANY SURFACE WITHOUT USING THE
VIBRATION MOUNT KIT.
This compressor may be permanently mounted in a
Ioaction such as e truck bed, it desired. A vibration
mount kit is included for this purpose.
1. In order to maintain adequate ventilation for com-
pressor cooling and to avoid contact with pick-up
truck bed, always mount the outfit at least 8" from
any vertical wall. Using the holes in the air tank legs
as a guide, mark and drill four 5/16" diameter holes
in the mounting surface.
2. Insert the vibration mounts in the mounting holes.
Place a flat washer under the mounting surface and
secure each mount with a lock washer and nut. See
figure 2.
3. Set the outfit on the exposed threaded ends of the
mount to the airtank legs with a lock washer and nut.
LOCKWASHER
Figure 2
Compressors are shipped without oil. Do not
attempt to operate this air compressor without
first adding oil to the compressor pump
crankcase and engine crankcase.
Place unit on a level surface. Remove compressor oil fill
plug and slowly add a special compressor oil such as
Sears compressor oil or SAE-20-20W SF motor oil until
it is even with the top of the oil fill hole. (It must not be
allowed to be lower than 3/8" - 6 threads down - fro m the
top.) When filling the crankcase, the oil flows very
slowly. If the oil is added too quickly, it will overflow and
appear to be full. (Crankcase oil capacity is 16 fluid
ounces.) Under winter-type conditions use SAE 10W oil.
(Multi-viscosity oil - 10W30 - will leave carbon deposits
on critical components reducing performance and com-
pressor life.) Replace oil fill plug.
Remove engine oil fill plug and slowly add oil to the point
of overflowing. Use a high quality oil classified "FOR
SERVICE SC, SD, SE or MS,". See Briggs and Stratton
"OPERATING AND MAINTENANCE INSTRUCTIONS" for
recommended SAE viscosity grades. (Engine crankcase
capacity is 20 fluid ounces.)
For your convenience, purchase a W' NPT nipple 2V2"
long, and a 1/4"NPT x 1/4"NPT coupling (pipe collar) to
allow ease in draining oil. Remove oil drain plug on the
gas tank side of the engine and install the nipple. Thread
the ooupting on the end of the nipple and screw the drain
plug in the coupling. See figure 3.
COUPLING
DRAIN
NIPPLE
Figure 3
With the unit in a level position, fill the gas tank (approx.
3/4 gal.) with fresh, clean unleaded gasoline. Regular
gas is an acceptable substitute. Do not use premium
gasoline.
Gasoline Vapor is highly flammable. Refuel
outdoors preferably, or only in well venti-
lated areas. Do not refuel or check gaso-
line level while the engine is running. Do
not store, spill or use gasoline near an
open flame.
9 - ENG D20396 Ray 0 2/16/0Q

Oo not mix oil with gasoUne.
Break-In Procedures
Open outlet valve to prevent pressure from building up
in the tank. Set toggle lever of unloader valve in the
vertical position to relieve compressor head pressure.
See figure 4. Move the choke lever to "choke" position
and move on -off lever to the "on" position. See figure 5.
Pull choke allthe way out. Move stop switch away from
spark plug.
OPEN
POSITION
I
tt'tP__ ". I
k& /
CLOSED
POSITION
RE_r..IlII|[e]_
Figure 4
[ IRUN
Figure 5
A warm engine requires less choking than a cold engine.
1.
Unit is top heavy. Make sure the compres-
sor is stable and will not tip before pulling
the starting cord,
Place your left hand on the air compressor handle,
and your right hand on the starter handle, and pull
cord out quickly to overcome engine compression
and prevent "kickback". If engin e does not start,
push the choke about three-quarters of the way in or
choke level three quarters to the left and pull starter
handle again. When engine starts, push choke in or
choke lever to the left gradually.
2,
3.
4,
Serious damage may result in the following
break-in instructions are not followed.
Pump Break-in: Open the outlet valve to prevent tank
pressure build-up. Run the air compressor for 30
minutes to seat the rings and lubricate all internal
surfaces. This operation must be completed only
once when first putting the unit in service.
After completing the above, and when ready to begin
using the compressor, move the unloader valve
toggle lever to a horizontal position. Close the outlet
valve to build tank pressure.
Engine Break-in: After the first 5 hours of normal
running, change the engine oil. Then after every 25
hours the engine oil should be changed.
10 - ENG
D20396 Rev 0 2/16/00