EQ38A
Owner’s Manual & Safety Instructions
Save This Manual%Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the back
of the manual near the assembly diagram (or month and year of purchase if product has no number). Keep
this manual and the receipt in a safe and dry place for future reference. 17e
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When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright© 2011 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.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Too l s r e q ui r e d f o r a s s em b l y a n d s e rv i c e m a y n o t b e i n c lu d e d.
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Safety ......................................................... 2
Specifications ............................................. 6
Setup .......................................................... 7
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Operation ................................................... 10
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Maintenance .............................................. 12
Parts Lists and Diagrams .......................... 16
Warranty .................................................... 20
U@;ECEV%?QDWRG?%@EX%X6<CECACRE?
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that
follow this symbol to avoid possible injury or death.
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Addresses practices not related to personal injury.
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U@;ECEV – When using tools, basic precautions should always be followed, including the following:
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"8#$('4$"&8#%+*2&(*%'#"83%$.*%$&&71
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1. Y**/%$.*%)&([%,(*,%47*,8%,89%)*77%7"3.$*91%%
Cluttered benches and dark areas increase the
risks of electric shock, fire, and injury to persons.
2. X&%8&$%&/*(,$*%$.*%$&&7%"8%*\/7&#"]*%
,$5&#/.*(*#I%#'4.%,#%"8%$.*%/(*#*84*%
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The tool is able to create sparks resulting
in the ignition of the dust or fumes.
Page 2 <&(%$*4.8"4,7%H'*#$"&8#I%/7*,#*%4,77%JKLLLKLMMKNOPO1 Item 68424 68425
3. Keep bystanders, children, and visitors away
while operating the tool. Distractions are
able to result in the loss of control of the tool.
S*(#&8,7%?,2*$>
1. Stay alert. Watch what you are doing and
use common sense when operating the tool.
Do not use the tool while tired or under the
influence of drugs, alcohol, or medication.%%
A moment of inattention while operating the
tool increases the risk of injury to persons.
2. X(*##%/(&/*(7>1%%X&%8&$%)*,(%7&&#*%
47&$."83%&(%=*)*7(>1%%T&8$,"8%7&83%.,"(1%%
Y**/%.,"(I%47&$."83I%,89%37&]*#%,),>%2(&5%
5&]"83%/,($#1%%Loose clothes, jewelry, or long
hair increases the risk of injury to persons as
a result of being caught in moving parts.
3. @]&"9%'8"8$*8$"&8,7%#$,($"831%%W*%#'(*%
$.*%#)"$4.%"#%&22%+*2&(*%4&88*4$"83%$&%
$.*%,"(%#'//7>1%%Do not carry the tool with
your finger on the switch or connect the
tool to the air supply with the switch on.
4. ;*5&]*%,9='#$"83%[*>#%,89%)(*84.*#%
+*2&(*%$'(8"83%$.*%$&&7%&81 A wrench or a
key that is left attached to a rotating part of the
tool increases the risk of personal injury.
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1. Use clamps or another practical way to secure
and support the workpiece to a stable platform.
Holding the work by hand or against the body is
unstable and is able to lead to loss of control.
2. X&%8&$%2&(4*%$.*%$&&71 Use the correct tool for the
application. The correct tool will do the job better
and safer at the rate for which the tool is designed.
3. X&%8&$%'#*%$.*%$&&7%"2%$.*%#)"$4.%9&*#%
8&$%$'(8%$.*%$&&7%&8%&(%&221 Any tool
that cannot be controlled with the switch
is dangerous and must be repaired.
4. X"#4&88*4$%$.*%$&&7%2(&5%$.*%,"(%#&'(4*%
+*2&(*%5,["83%,8>%,9='#$5*8$#I%4.,83"83%
,44*##&("*#I%&(%#$&("83%$.*%$&&71 Such preventive
safety measures reduce the risk of starting the
tool unintentionally. Turn off and detach the air
supply, safely discharge any residual air pressure,
and release the throttle and/or turn the switch to
its off position before leaving the work area.
5. X&%8&$%&]*((*,4.1%%%
Y**/%/(&/*(%2&&$"83%,89%+,7,84*%,$%,77%$"5*#1%%
Proper footing and balance enables better
control of the tool in unexpected situations.
6. F#*%#,2*$>%*H'"/5*8$1
A dust mask, non-skid safety shoes
and a hard hat must be used for the
applicable conditions.
7. @7),>#%)*,(%*>*%/(&$*4$"&81
Wear ANSI-approved safety goggles.
8. @7),>#%)*,(%.*,("83%/(&$*4$"&8%
).*8%'#"83%$.*%$&&71
Prolonged exposure to high intensity
noise is able to cause hearing loss.
5. Store the tool when it is idle out of reach
of children and other untrained persons.
A tool is dangerous in the hands of untrained users.
6. D,"8$,"8%$.*%$&&7%)"$.%4,(*1%%Keep a cutting
tool sharp and clean. A properly maintained tool,
with sharp cutting edges reduces the risk
of binding and is easier to control.
7. T.*4[%2&(%5"#,7"385*8$%&(%+"89"83%&2%
5&]"83%/,($#I%+(*,[,3*%&2%/,($#I%,89%,8>%
&$.*(%4&89"$"&8%$.,$%,22*4$#%$.*%$&&7^#%
&/*(,$"&81%%If damaged, have the tool serviced
before using. Many accidents are caused
by poorly maintained tools. There is a risk
of bursting if the tool is damaged.
8. F#*%&87>%,44*##&("*#%$.,$%,(*%"9*8$"2"*9%+>%$.*%
5,8'2,4$'(*(%2&(%$.*%#/*4"2"4%$&&7%5&9*71 Use of
an accessory not intended for use with the specific
tool model, increases the risk of injury to persons.
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1. Tool service must be performed only
by qualified repair personnel.
2. U.*8%#*(]"4"83%,%$&&7I%'#*%&87>%"9*8$"4,7%
(*/7,4*5*8$%/,($#1%%F#*%&87>%,'$.&("_*9%/,($#1
3. F#*%&87>%$.*%7'+("4,8$#%#'//7"*9%)"$.%$.*%
$&&7%&(%#/*4"2"*9%+>%$.*%5,8'2,4$'(*(1
Page 3<&(%$*4.8"4,7%H'*#$"&8#I%/7*,#*%4,77%JKLLLKLMMKNOPO1Item 68424 68425
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1. E*]*(%4&88*4$%$&%,8%,"(%#&'(4*%$.,$%
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to persons. Use only clean, dry, regulated
compressed air at the rated pressure or within the
rated pressure range as marked on the tool.
Always verify prior to using the tool that the air
source has been adjusted to the rated air pressure
or within the rated air-pressure range.
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Over pressurizing the tool may cause
bursting, abnormal operation,
breakage of the tool or serious injury
2. Never use oxygen, carbon dioxide, combustible
gases or any bottled gas as an air source
for the tool. Such gases are capable of
explosion and serious injury to persons.
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No-load speed
8
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WSD
T<D
?T<D
Revolutions or reciprocation per minute
Pounds per square inch of pressure
Foot-pounds of torque
Blows per minute
Cubic Feet per Minute flow
Cubic Feet per Minute flow
at standard conditions
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ESA
ES?
National pipe thread, tapered
National pipe thread, straight
WARNING marking
concerning Risk of Eye Injury.
Wear ANSI-approved eye protection.
WARNING marking concerning Risk of
Hearing Loss. Wear hearing protection.
WARNING marking concerning
Risk of Respiratory Injury. Wear
NIOSH-approved dust mask/respirator.
WARNING marking concerning
Risk of Explosion.
Page 4 <&(%$*4.8"4,7%H'*#$"&8#I%/7*,#*%4,77%JKLLLKLMMKNOPO1 Item 68424 68425
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1. The amount of actual torque may vary depending
on the cleanness and condition of the threads and
other factors. If tightening critical components,
check the actual torque applied to the fastener
with a mechanical torque wrench (not supplied).
2. The warnings and precautions discussed in this
manual cannot cover all possible conditions and
situations that may occur. It must be understood
by the operator that common sense and caution
are factors which cannot be built into this
product, but must be supplied by the operator.
3. WARNING: Some dust created by power sanding,
sawing, grinding, drilling, and other construction
activities, contains chemicals known to the State
of California to cause cancer and birth defects or
other reproductive harm. Some examples of these
chemicals are:
• Lead from lead-based paints
• Crystalline silica from bricks and cement or other
masonry products
• Arsenic and chromium from chemically treated
lumber
Your risk from these exposures varies, depending
on how often you do this type of work. To
reduce your exposure to these chemicals:
work in a well ventilated area, and work with
approved safety equipment, such as those
dust masks that are specially designed to filter
out microscopic particles. (California Health
& Safety Code § 25249.5, et seq.)
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This tool vibrates during use. Repeated or
long-term exposure to vibration may cause
temporary or permanent physical injury,
particularly to the hands, arms and shoulders.
To reduce the risk of vibration-related injury:
1. Anyone using vibrating tools regularly or for
an extended period should first be examined
by a doctor and then have regular medical
check-ups to ensure medical problems are not
being caused or worsened from use. Pregnant
women or people who have impaired blood
circulation to the hand, past hand injuries,
nervous system disorders, diabetes, or Raynaud's
Disease should not use this tool. If you feel
any symptoms related to vibration (such as
tingling, numbness, and white or blue fingers),
seek medical advice as soon as possible.
4. WARNING: The brass components of this product
contain lead, a chemical known to the State
of California to cause cancer and birth defects
or other reproductive harm. (California Health
& Safety Code § 25249.5, et seq.)
5. Only use with accessories rated to handle the
forces exerted by this tool during operation.
Other accessories not designed for the forces
generated may break and forcefully launch pieces.
6. Attach all accessories properly to the tool before
connecting the air supply. A loose accessory
may detach or break during operation.
7. Obey the manual for the air compressor
used to power this tool.
8. Install an in-line shutoff valve to allow
immediate control over the air supply in an
emergency, even if a hose is ruptured.
9. Use this tool with both hands only. Using tools
with only one hand can result in loss of control.
10. Do not lay the tool down until it has come to
a complete stop. Moving parts can grab the
surface and pull the tool out of your control.
2. Do not smoke during use. Nicotine reduces
the blood supply to the hands and fingers,
increasing the risk of vibration-related injury.
3. Wear suitable gloves to reduce the
vibration effects on the user.
4. Use tools with the lowest vibration
when there is a choice.
5. Include vibration-free periods each day of work.
6. Grip tool as lightly as possible (while still keeping
safe control of it). Let the tool do the work.
7. To reduce vibration, maintain
tool as explained in this manual.
If abnormal vibration occurs, stop immediately.
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Maximum Air Pressure 90 PSI
Air Inlet 1/4"–18 NPT
Average Air Consumption 5 CFM @ 90 PSI 6 CFM @ 90 PSI
Drive Size 3/8" 1/2"
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Page 6 <&(%$*4.8"4,7%H'*#$"&8#I%/7*,#*%4,77%JKLLLKLMMKNOPO1 Item 68424 68425
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