Harbor Freight Tools 93874 User Manual
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
Visit our Web site at: http://www.harborfreight.com
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 Freight Tools.
For technical questions, please call 1-800-444-3353.
PRODUCT SPECIFICATIONS
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SAVE THIS MANUAL
You will need this manual for the safety warnings and precautions, assembly, operating,
inspection, maintenance and cleaning procedures, parts list and assembly diagram.
Keep your invoice with this manual. Write the invoice number on the inside of the front
cover. Keep this manual and invoice in a safe and dry place for future reference.
GENERAL SAFETY RULES AND PRECAUTIONS
WARNING!
READ AND UNDERSTAND ALL INSTRUCTIONS
Failure to follow all instructions listed below may result in
electric shock, fire, and/or serious injury.
SAVE THESE INSTRUCTIONS
WORK AREA
1. Keep your work area clean and well lit. Cluttered benches and dark areas
invite accidents.
2. Do not operate power tools in explosive atmospheres, such as in the
presence of flammable liquids, gases, or dust. Power tools create
sparks which may ignite the dust or fumes.
SKU 93874 For technical questions, please call 1-800-444-3353. Page 2
3. 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
1. Stay alert. Watch what you are doing, and use common sense when operating a power tool. Do not use a power tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operat-
ing power tools may result in serious personal injury.
2. 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.
3. Avoid accidental starting. Be sure the Gasoline Engine’s Power Switch is
in its “OFF” position before moving the Compressor
any service, maintenance, or cleaning procedures on the unit.
4. 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.
and
before performing
5. 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.
6. 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. 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.
2. 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. Store idle tools out of reach of children and other untrained persons. Tools
are dangerous in the hands of untrained users.
4. 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 For technical questions, please call 1-800-444-3353. Page 3
damaged tools “Do not use” until repaired.
5. 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.
6. 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. Tool service must be performed only by qualified repair personnel. Service
or maintenance performed by unqualified personnel could result in a risk of injury.
2. When servicing a tool, use only identical replacement parts. Follow
instructions in the
manual. Use of unauthorized parts or failure to follow maintenance instructions
may create a risk of electric shock or injury.
“Inspection, Maintenance, And Cleaning”
section of this
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 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 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. Maintain labels and nameplates on the Air Compressor. These carry important
information. If unreadable or missing, contact Harbor Freight Tools for a replacement.
3. 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 consumption, 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 breathing as described in Compressed Gas Association Commodity Specification G 7.11966, 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 For technical questions, please call 1-800-444-3353. Page 4
warranties are void, and Harbor Freight Tools disclaims any liability whatsoever for
any loss, personal injury, or damage.
4. 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.
5. 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” diameter. Greater than 50 feet use 3/4” diameter. Larger diameter pipe is always better.
6. 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.
7. 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
than
four threads are showing.
8. Avoid injury. Never direct the air output at people or animals.
more
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 additional tools and equipment.
11. Industrial applications must follow OSHA guidelines.
12. Never stand on the Air Compressor. Serious injury could result if the Compres-
sor is tipped.
13. Never leave the Air Compressor unattended when it is plugged in and run-
ning. Turn off the Compressor, and unplug the unit before leaving.
14. Do not allow children and other unauthorized people to handle or play with
the Air Compressor.
15. Do not move or transport the Compressor if the Tanks (12) are under pressure.
16. 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. Whenever possible, use a carbon monoxide detector (not included) to detect excessive 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. Do not force the Compressor. This tool will do the work better and safer at the
speed and capacity for which it was designed.
18. 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
FIGURE A
WATER
FILTER
OILER
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. Keep the Compressor and surrounding areas clean at all times.
3. 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. Never store fuel or other flammable materials near the Compressor.
5. 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
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