AIR COMPRESSOR
6 HP - 8 GALLON CAPACITY
Model 93874
ASSEMBLY AND OPERATING INSTRUCTIONS
Do to continuing improvements,
actual product may differ slightly
from the product described herein.
WARNING!
Your Warranty Is Voided If:
A. You do not put compressor oil in the Compressor’s crankcase prior to its first use.
Before each use, check the oil level. Never run the Compressor with low or no compres-
sor oil. Running the Compressor with low or no oil will permanently damage the unit.
B. You do not put engine oil in the Engine’s crankcase prior to its first use.
Before each use, check the oil level. Never run the Engine with low or no engine oil.
Running the Compressor with low or no oil will permanently damage the unit.
C. You drop the Air Compressor.
Always lift the Air Compressor using its Handle.
®
3491 Mission Oaks Blvd., Camarillo, CA 93011
TO PREVENT SERIOUS INJURY,
READ AND UNDERSTAND ALL WARNINGS
AND INSTRUCTIONS BEFORE USE.
©
Copyright 2006 by Harbor Freight Tools®. All rights reserved. No portion of this
manual or any artwork contained herein may be reproduced in any shape or form
without the express written consent of Harbor FreightTools.
For technical questions, please call 1-800-444-3353.
3.
1.
Keep bystanders, children, and visitors away while operating a power tool.
Distractions can cause you to lose control. Protect others in the work area from
debris such as chips and sparks. Provide barriers or shields as needed.
PERSONAL SAFETY
Stay alert. Watch what you are doing, and use common sense when oper-
ating a power tool. Do not use a power tool while tired or under the influ-
ence of drugs, alcohol, or medication. A moment of inattention while operat-
ing power tools may result in serious personal injury.
2.
3.
4.
Dress properly. Do not wear loose clothing or jewelry. Contain long hair.
Keep your hair, clothing, and gloves away from moving parts. Loose
clothes, jewelry, or long hair can be caught in moving parts.
Avoid accidental starting. Be sure the Gasoline Engine’s Power Switch is
in its“OFF”position before moving the Compressor and before performing
any service, maintenance, or cleaning procedures on the unit.
Remove adjusting keys or wrenches before turning the Compressor on. A
wrench or a key that is left attached to a rotating part of the machine may result
in personal injury.
5.
6.
Do not overreach. Keep proper footing and balance at all times. Proper
footing and balance enables better control of the power tool in unexpected
situations.
Use safety equipment. Always wear eye protection. Always wear
ANSI approved safety impact goggles when using this product. ANSI
approved hearing protection must also be used.
TOOL USE AND CARE
1.
2.
Do not force the tool. Use the correct tool for your application. The correct
tool will do the job better and safer at the rate for which it is designed.
Do not use the Compressor if the Gasoline Engine’s Power Switch does not
turn it on or off. Any tool that cannot be controlled with its power switch is
dangerous and must be replaced.
3.
4.
Store idle tools out of reach of children and other untrained persons. Tools
are dangerous in the hands of untrained users.
Maintain tools with care. Properly maintained tools with a sharp cutting edge
are less likely to bind and are easier to control. Do not use a damaged tool. Tag
SKU 93874
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Page 3
damaged tools “Do not use” until repaired.
5.
6.
Check for misalignment or binding of moving parts, breakage of parts, and
any other condition that may affect the tool’s operation. If damaged, have
the tool serviced before using. Many accidents are caused by poorly main-
tained tools.
Use only accessories that are recommended by the manufacturer for your
model. Accessories that may be suitable for one tool may become hazardous
when used on another tool.
SERVICE
1.
2.
Tool service must be performed only by qualified repair personnel. Service
or maintenance performed by unqualified personnel could result in a risk of injury.
When servicing a tool, use only identical replacement parts. Follow
instructions in the “Inspection, Maintenance, And Cleaning”section of this
manual. Use of unauthorized parts or failure to follow maintenance instructions
may create a risk of electric shock or injury.
SPECIFIC SAFETY RULES AND PRECAUTIONS
1.
WARNING! Your Warranty is voided if:
A. You do not put compressor oil in the Compressor’s crankcase prior to its
first use. Before each use, check the oil level. Never run the Compressor with
low or no compressor oil. Running the Compressor with low or no oil will perma-
nently damage the unit.
B. You do not put engine oil in the Engine’s crankcase prior to its first use.
Before each use, check the oil level. Never run the Engine with low or no engine
oil. Running the Engine with low or no oil will permanently damage the unit.
C. You drop the Air Compressor. Always lift and lower the Air Compressor using
its Handle.
2.
3.
Maintain labels and nameplates on the Air Compressor. These carry important
information. If unreadable or missing, contact Harbor Freight Tools for a replace-
ment.
DANGER! This Air Compressor is NOT equipped and should not be used
“as-is” to supply breathing quality air. For any application of air for human consump-
tion, you must fit the Air Compressor with suitable inline safety, alarm equipment,
and other safety equipment (not included). This additional equipment is necessary
to properly filter and purify the air to meet minimal specifications for Grade D breath-
ing as described in Compressed Gas Association Commodity Specification G 7.1-
1966, OSHA 29 CFR 1910. 134, and/or Canadian Standards Associations (CSA).
In the event the Air Compressor is used for the purpose of breathing air application
and proper in-line safety and alarm equipment is not simultaneously used, existing
SKU 93874
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Page 4
warranties are void, and Harbor Freight Tools disclaims any liability whatsoever for
any loss, personal injury, or damage.
4.
5.
DANGER! Never attempt to repair or modify the Tanks (12). Welding, drilling,
or any other modification will weaken the Tanks resulting in damage from rupture or
explosion. Always replace worn, cracked, or damaged Tanks.
WARNING! Never use plastic (PVC) pipe for compressed air. Serious injury or
death could result. Any tube, pipe, or hose used must have a pressure rating higher
than 150 PSI. Minimum recommended pipe size: Up to 50 feet long use 1/2” diam-
eter. Greater than 50 feet use 3/4” diameter. Larger diameter pipe is always better.
6.
7.
Make sure all tools and equipment used with the Air Compressor are rated to
the appropriate capacity. Do not exceed the capacity for any tool or equipment.
Always start out with the regulator adjusted all the way down, and then gradually
bring the pressure up to the proper level.
Drain the Air Compressor every day. Do not allow excessive moisture to build up
inside the Air Compressor’s Tank. Do not open the Drain Plugs (25) with more than
10 PSI of air pressure in the Tank. Do not unscrew the Drain Plugs so that more
than four threads are showing.
8.
Avoid injury. Never direct the air output at people or animals.
9.
Do not alter or remove the Pressure Release Valves (9, 33).
10.
Make sure the Air Compressor is located on a flat, level, sturdy surface ca-
pable of supporting the weight of the Compressor, operator(s), and any addi-
tional tools and equipment.
11.
12.
Industrial applications must follow OSHA guidelines.
Never stand on the Air Compressor. Serious injury could result if the Compres-
sor is tipped.
13.
14.
15.
16.
Never leave the Air Compressor unattended when it is plugged in and run-
ning. Turn off the Compressor, and unplug the unit before leaving.
Do not allow children and other unauthorized people to handle or play with
the Air Compressor.
Do not move or transport the Compressor if the Tanks (12) are under pres-
sure.
This Compressor is designed for outdoor use only. Do not operate the Com-
pressor in a closed area or in a poorly ventilated area. When running, the Engine
of this Compressor produces carbon monoxide, a colorless, odorless, toxic
fume that, when inhaled, can cause serious personal injury or death. When-
ever possible, use a carbon monoxide detector (not included) to detect ex-
cessive carbon monoxide fumes in the work area and in the surrounding area.
SKU 93874
For technical questions, please call 1-800-444-3353.
Page 5
17.
18.
Do not force the Compressor. This tool will do the work better and safer at the
speed and capacity for which it was designed.
To extend the life of your tools and equipment, it is recommended that you install
an oiler and water filter inline with the air output line of the Air Compressor.
(See Figure A.)
REGULATOR
OILER
WATER
FILTER
FIGURE A
FIRE AND EXPLOSION PRECAUTIONS
1.
Gasoline fuel and fumes are flammable, and potentially explosive. Use
proper fuel storage and handling procedures. Always have multiple ABC class
fire extinguishers nearby.
2.
3.
Keep the Compressor and surrounding areas clean at all times.
When spills of fuel or oil occur, they must be cleaned up immediately. Dis-
pose of fluids and cleaning materials as per any local, state, or federal codes and
regulations. Store oil rags in a covered metal container.
4.
5.
Never store fuel or other flammable materials near the Compressor.
Do not smoke, or allow sparks, flames, or other sources of ignition around
the Compressor.
SKU 93874
For technical questions, please call 1-800-444-3353.
Page 6
6.
Keep grounded conductive objects, such as tools, away from exposed, live
electrical parts and connections to avoid sparking or arcing. These events
could ignite fumes or vapors.
7.
8.
Do not refill the Fuel Tank while the Engine is running or while the Engine is
still hot. Do not operate the Compressor with known leaks in the fuel system.
Use only Engine manufacturer recommended fuel and oil.
MECHANICAL PRECAUTIONS
1.
Prior to performing service, maintenance, or cleaning procedures, always
make sure the Gasoline Engine’s Power Switch is in its “OFF” position.
Allow the Engine and Compressor to completely cool. Then, remove the
spark plug from the Engine.
2.
3.
Do not alter or adjust any part of the Compressor or Engine that is as-
sembled and supplied by the manufacturer.
Always follow and complete scheduled Compressor and Engine mainte-
nance.
CHEMICAL PRECAUTIONS
1.
2.
Avoid contact with hot fuel, oil, exhaust fumes, and solid surfaces.
Avoid body contact with fuels, oils, and lubricants used in the Compressor
and Engine. If swallowed, seek medical treatment immediately. Do not induce
vomiting if fuel is swallowed. For skin contact, immediately wash with soap and
water. For eye contact, immediately flush eyes with clean water.
NOISE PRECAUTIONS
1.
1.
Prolonged exposure to noise levels above 85 dBA is hazardous to hearing.
Always wear ANSI approved hearing protection when operating or working
around the Compressor when it is running.
MISC. PRECAUTIONS
WARNING! This product contains brass, which is a chemical known to the
SKU 93874
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Page 7
State of California to cause cancer and birth defects and other reproductive
harm. (California Health & Safety Code 25249.5, et seq.)
2.
3.
WARNING! People with pacemakers should consult their physician(s)
before using this product. Operation of electrical equipment in close proximity to
a heart pacemaker could cause interference to or failure of the pacemaker.
WARNING! The warnings and precautions discussed in this manual cannot
cover all possible conditions and situations that may occur. It must be under
stood by the operator that common sense and caution are factors which cannot
be built into this product, but must be supplied by the operator.
UNPACKING
When unpacking, check to make sure all the parts shown on the Parts List on page 16
are included. If any parts are missing or broken, please call Harbor Freight Tools at the
number shown on the cover of this manual as soon as possible.
PRE-OPERATING INSTRUCTIONS
CAUTION! Always make sure the Gasoline Engine’s Power Switch is in its
“OFF” position prior to performing any service, maintenance, or cleaning of the
Compressor or Engine.
To Add Engine Oil:
1.
IMPORTANT! Prior to first using the Compressor, the Engine MUST be filled
with a high quality 10W-30 grade engine oil.
(See Engine manufacturer’s manual for complete instructions.)
2.
3.
To do so, unscrew and remove the Engine Oil Dipstick. Pour approximately 3/4
quart of engine oil into the Dipstick Hole. Do not overfill.
Clean the Oil Dipstick. Then screw the Dipstick fully back into the Dipstick Hole.
Unscrew and remove the Oil Dipstick again, and observe the level of engine oil
on the Dipstick. The oil level should appear between the “MINIMUM” and “MAXI-
MUM” indicator marks on the Oil Dipstick.
4.
5.
If necessary, continue adding engine oil, while rechecking the Oil Dipstick, until
the oil level reaches the “MAXIMUM” indicator on the Oil Dipstick.
Do not exceed the “MAXIMUM” indicator mark on the Oil Dipstick.
When finished adding engine oil, carefully screw the Oil Dipstick back into the
Dipstick Hole.
SKU 93874
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Page 8
To Add Compressor Oil:
1.
2.
3.
4.
IMPORTANT! Prior to first using the Compressor, the Compressor MUST be
filled with a high quality 30 weight, non-detergent, compressor oil.
(See Figure B.)
To do so, remove the red plastic plug that is covering the oil fill hole. That plastic
plug is only used for shipping purposes. Pour approximately 1/2 quart of compres-
sor oil into the Compressor Oil Plug Hole. Do not overfill. (See Figure B.)
Observe the level of compressor oil through the Compressor’s Oil Level Sight
Glass (21A). The oil level should be maintained at the center dot in the sight
glass. (See Figure B.)
If necessary, continue adding compressor oil, while rechecking the Compressor’s
Oil Level Sight Glass (21A), until the oil level reaches the “MAXIMUM” mark on
the Indicator. Do not exceed the “MAXIMUM” indicator mark on the Oil Level
Sight Glass. (See Figure B.)
5.
When finished adding compressor oil, install the Oil Breather Plug (37A) into the
Compressor Oil Plug Hole. The Oil Breather Plug is press-fitted in with the flat
edge of the plug facing the cylinder. The large O-rings on top serve as a grip when
removing it. (See Figure B.)
FIGURE B
OIL BREATHER PLUG (37A)
FILL LEVEL
flat
edge
OIL LEVEL SIGHT GLASS (21A)
To Fill The Fuel Tank:
1.
Prior to first using the Compressor, the Engine’s Fuel Tank MUST be filled with
unleaded gasoline. (See Engine manufacturer’s manual.)
2.
To do so, remove the Fuel Tank Cap and fill the Fuel Tank with unleaded gaso-
line. Then, replace the Fuel Tank Cap. Thereafter, check the Fuel Tank for the
amount of unleaded gasoline. When necessary, refill the Fuel Tank.
(See Engine manufacturer’s manual.)
07e
SKU 93874
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Page 9
To Install A Quick Coupler:
1.
Prior to use, the Air Compressor requires the attachment of a Quick Coupler (not
included) to its Pressure Regulator (29). To do so, make sure the screen Air
Filter within the Pressure Regulator is properly seated. Wrap approximately 3” of
Pipe Thread Seal Tape (not included) around the male threads of the Quick
Coupler. Then, firmly tighten the Quick Coupler into the Pressure Regulator.
(See Figure C.)
QUICK COUPLER
(NOT INCLUDED)
PRESSURE REGULATOR
(29)
FIGURE C
OPERATING INSTRUCTIONS
To Start The Compressor:
1.
Check to make sure the Air Tank’s two Drain Plugs (25), located at the bottom of
the Air Tanks (12), are fully closed. Check oil level for both the compressor and
the engine. (See Figure D.)
END VIEW
FIGURE D
DRAIN PLUG
(25)
DRAIN PLUG
(25)
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Page 10
2.
3.
Turn the Tool Pressure Regulator (29) counterclockwise completely.
(See Figure E.)
Connect an air hose (not included) to the previously installed Quick Coupler. Then,
connect the other end of the air hose to the tool or equipment being powered.
(See Figure E.)
4.
5.
6.
7.
8.
Turn the Engine’s Power Switch to its “ON” position.
(See Engine manufacturer’s manual.)
Turn the Engine Choke to its “CHOKE” position.
(See Engine manufacturer’s manual.)
Pull the Starter Grip briskly one or more times until the Engine begins to run.
(See Engine manufacturer’s manual.)
Allow the Engine to run 3-5 minutes for the Engine to warm up. Then, turn the
Engine Choke to its “RUN” position. (See Engine manufacturer’s manual.)
NOTE: The Compressor will automatically run while the air pressure is less than
145 PSI as indicated by the Tank Pressure Gauge (46). When the maximum air
pressure (145 PSI) is reached, the Engine will automatically switch to idle and the
Compressor will stop operating. The Compressor and Engine will automatically
restart when the air pressure falls below 105 PSI. (See Figure E.)
9.
Connect the tool and air hose to the quick coupler. Once the Tank Pressure Gauge
(46) reaches at least 105 PSI, gradually turn theTool Pressure Regulator (29) clock-
wise until the lowest working air pressure for any attached piece of equipment is
reached as indicated by the Tool Pressure Gauge (55). (See Figure E.)
Warning: NEVER exceed the working air pressure of any tool or equipment at
any time. Always start the compressor with the regulator adjusted to its lowest
setting to prevent tool damage or explosion, resulting in PERSONAL INJURY.
TOOL PRESSURE
GAUGE
FIGURE E
(55)
TANK PRESSURE
GAUGE
TOOL
PRESSURE
REGULATOR
(29
TOOL PRESSURE
REGULATOR
(29)
(46)
QUICK
COUPLER
(NOT INCLUDED)
SKU 93874
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Page 11
10.
IMPORTANT: The Pressure Release Valve (9) is used when decompression is
needed quickly and efficiently. To decompress the air pressure in the Tanks (12),
turn the Tool Pressure Regulator (29) to its “OFF” position. Then, pull out on the
Pressure Release Valve to immediately release air pressure from the Tanks.
(See Figures E and F.)
END VIEW
PRESSURE RELEASE VALVE
(9)
FIGURE F
To Stop The Compressor:
1.
2.
3.
4.
5.
Turn the Engine’s Power Switch to its “OFF” position.
(See Engine manufacturer’s manual.)
Wait for the Compressor to stop pumping air (at idle). Then, turn the Tool Pres-
sure Regulator (29) counterclockwise to its “OFF” position. (See Figure E.)
Allow the tool or equipment being powered to continue running until it has ex-
pended any remaining compressed air in the tool/equipment and its air hose.
Disconnect the air hose from the Quick Connector on the Compressor. Then,
disconnect the air hose from the tool/equipment. (See Figure E.)
Turn the Tool Pressure Regulator (29) clockwise to its “ON” position to release all
air pressure from the Compressor’s Tanks (12). Then, turn the Tool Pressure
Regulator counterclockwise to its “OFF” position. (See Figure E.)
6.
7.
Remove any moisture in the Compressor’s Tanks (12) by opening the two Drain
Plugs (25). Then, retighten the Drain Plugs. (See Figure D.)
Allow the Air Compressor to completely cool. Then store the unit in a clean, dry,
safe location out of reach of children and other unauthorized people.
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Page 12
INSPECTION, MAINTENANCE, AND CLEANING
1.
2.
WARNING! Make sure the Power Switch of the Engine is in its “OFF”
position. Release all air pressure from the system and disconnect all tools and
equipment from the Air Compressor before performing any inspection, mainte-
nance, or cleaning procedures.
Before each use, inspect the general condition of the Air Compressor. Check
for loose screws, misalignment or binding of moving parts, cracked or broken
parts, damaged electrical wiring, loose air fittings, and any other condition that
may affect the safe operation of the Compressor. If abnormal noise or vibration
occurs, have the problem corrected before further use.
Do not use damaged equipment.
3.
Before each use, check the Engine oil level. If necessary, fill the crankcase of
the Engine with the proper amount and type of engine oil. Refer to the Engine
manufacturer’s manual for all inspection, maintenance, and cleaning in-
structions.
4.
5.
Before each use, check the Air Compressor oil level. If necessary, fill with a
premium quality, 30-weight, non-detergent, compressor oil. (See Figure B.)
Daily: Empty condensation from the Air Compressor’s Tanks (12). The Tanks
should be emptied daily to release all trapped moisture that may cause Air Tank
corrosion. Allow sufficient time for all of the condensation to escape from the
Tanks. Then, firmly retighten the two Drain Plugs (25). (See Figure D.)
6.
Every 500 hours or 12 months, replace the old compressor oil with new, pre-
mium quality, 30-weight, non-detergent, compressor oil. To do so, remove the
Screw (36A) located at the base of the Air Compressor. Drain the old oil into a
proper container. Then, refill the Air Compressor with new oil. (See Figure B.)
7.
To replace the V-Belt: Unscrew and remove the six Screws (21) that hold the
front Belt Guard (13) section to the rear Belt Guard section. Then, remove the
BELT GUARD (13)
SCREW (21)
SCREW (21)
SCREW (21)
SCREW (21)
FIGURE G
SKU 93874
SCREW (21)
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Page 13
front Belt Guard section. Loosen the four Screws (31) at the base of the Engine.
Slide the Engine toward the Air Compressor to loosen tension on the V-Belt (44).
Remove the old V-Belt from the Flywheel (39A) and Pulley (37). Install the new
V-Belt (A47/13 x 11.94) on the Flywheel and Pulley. Then reinstall the front Belt
Guard section and secure in place with the six Screws previously removed. (See
Figure G and Assy. Diagram.)
8.
9.
NOTE: Always dispose of old Engine oil and old Air Compressor oil in accor-
dance with local, state, and federal regulations.
CAUTION! All maintenance, service, or repairs not mentioned in this
manual must only be performed by a qualified service technician.
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST
AND ASSEMBLY DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEI-
THER THE MANUFACTURER OR DISTRIBUTOR MAKES ANY REPRESENTATION OR
WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO
REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/OR
DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACE-
MENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSEDTECHNICIANS,
AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISKS AND LIABILITY ARIS-
ING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACE-
MENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF
REPLACEMENT PARTSTHERETO.
SKU 93874
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Page 14
TROUBLESHOOTING - COMPRESSOR
Replace Valve
Cannot reach
maximum air
pressure point
SKU 93874
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Page 15
PARTS LIST
Part #
1
2
3
4
5
6
7
Description
Screw (M8 x 40)
Lock Nut (M6)
Lock Nut (M8)
Pneumatic Accelerator
Wheel
Wheel Pin
Inlet Tube
Tube
Pressure Release Valve
Screw (M8 x 40)
Belt Guard Wedge
Tank
Belt Guard
Lock Nut
Qty.
2
2
4
1
1
1
1
1
1
4
6
1
1
4
4
4
4
4
4
4
8
1
8
1
1
1
1
2
1
Part #
30
Description
Hose Clamp
Screw (M8 x 45)
Joint
Pressure Release Valve
Washer (#8)
Screw
Washer (#24)
Pulley (#145)
Screw (M6 x 50)
Screw (M8 x 16)
Belt Guard Support
Spacer
Gasoline Engine
Pumping Unit
Belt (A47)
Belt Guard Plate
Tank Pressure Gauge
Joint
Support
Hose Tail Fitting
Joint
Qty.
2
4
2
1
4
1
1
1
1
1
1
1
1
1
1
1
2
2
1
2
1
1
1
2
1
1
2
4
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
Washer (#6)
Rubber Foot
Washer (#6 x 18 x 1.5)
Screw (M6 x 35)
Washer (#6)
Nut (M6)
Screw (M5 x 12)
Screw (4.2 x 45)
Washer (#6 x 18 x 1.5)
Washer (#5)
Drain Plug
Rubber Handle
Joint
Joint
Spacer
Tap
Joint
Tool Pressure Gauge
Handle
Screw (M8 x 12)
Rubber Hose
Pressure Regulator
PARTS LIST - CONT.
Part #
1A
Description
Crankcase
Qty.
1
Part #
21A
Description
Oil Level Sight
Glass
Qty.
1
2A
Crankcase
Cover
1
22A
“OR” Gasket
1
3A
4A
5A
6A
7A
8A
9A
10A
11A
12A
13A
14A
15A
16A
17A
17AA
17B
18A
19A
20A
Screw
4
1
1
1
1
1
1
1
1
6
1
2
2
2
2
2
2
4
1
4
23A
24A
25A
26A
27A
28A
29A
30A
31A
32A
33A
34A
35A
36A
37A
38A
39A
40A
41A
100A*
Gasket
Valve Plate
Gasket
Valve
Gasket
1
2
1
4
1
1
1
1
1
1
6
1
2
1
1
1
1
1
1
1
“OR” Gasket
Crankshaft
Bearing
NOTE:
Bearing
Some parts are
listed and shown
for illustration
purposes only,
and are not
available indi-
vidually as
Oil Seal
Front Cover
Rear Cover
“OR” Gasket
Screw
Head
Filter Plate
Filter Element
Intake Filter
Screw
Screw
Air Conveyor
Screw
Screw
Oil Breather Plug
Washer
Flywheel
Screw
Star Washer
Gasket Set
Key
Connection Rod
Piston Pin
Piston
Piston Ring
Piston Ring
Piston Ring
Seeger
replacement
parts.
Cylinder
Screw
*Parts #23A, #24A, #25A, & #26A must be ordered
as a complete set: #100A Gasket Set.
07e
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Page 16
ASSEMBLY DIAGRAM
NOTE:
Some parts are listed and shown for illustration purposes only,
and are not available individually as replacement parts.
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Page 17
ASSEMBLY DIAGRAM - CONT.
35A
33A
34A
28A
27A
29A
30A
24A
31A
32A
25A
26A
24A
100A
26A
23A
17A
17AA
17B
17A
17AA
17B
18A
15A
16A
39A
16A
15A
40A
41A
38A
18A
18A
14A
14A
12A
10A
8A
19A
20A
7A
13A
5A
22A
1A
37A
6A
11A
4A
2A
9A
12A
36A
21A
3A
NOTE:
Some parts are listed and shown for illustration
purposes only, and are not available individually as replacement parts.
SKU 93874
For technical questions, please call 1-800-444-3353.
Page 18
LIMITED 2YEAR
WARRANTY
Harbor FreightTools Co. makes every effort to assure that its products meet high quality and durability standards,
and warrants to the original purchaser that this product is free from defects in materials and workmanship for
the period of two years from date of purchase (90 days if used by a professional contractoror if used as rental
equipment). See engine manufacturer’s warranty which covers engine.
This warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence or accidents,
repairs or alterations outside our facilities, or to lack of maintenance. We shall in no event be liable for death,
injuries to persons or property, or for incidental, contingent, special or consequential damages arising from the
use of our product.Some states do not allow the exclusion or limitation of incidental or consequential damages,
so the above limitation of exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY
AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with transportation charges
prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise. If our
inspection verifies the defect, we will either repair or replace the product at our election or we may elect to
refund the purchase price if we cannot readily and quickly provide you with a replacement. We will return
repaired products at our expense, but if we determine there is no defect, or that the defect resulted from
causes not within the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also have other rights which vary from state to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353
SKU 93874
For technical questions, please call 1-800-444-3353.
Page 19
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