For technical questions or replacement parts, please call 1-800-444-3353.
Manual Revised 07i
Page 2
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.
IMPORTANT SAFETY INFORMATION
In this manual, on the labeling, and all other information
provided with this product:
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.
DANGER indicates a hazardous situation which,
DANGERDANGER
WARNINGWARNING
if not avoided, will result in death or serious
injury.
WARNING indicates a hazardous situation
which, if not avoided, could result in death or
serious injury.
CAUTIONCAUTION
NOTICENOTICE
CAUTIONCAUTION
CAUTION, used with the safety alert symbol,
indicates a hazardous situation which, if not
avoided, could result in minor or moderate
injury.
NOTICE is used to address practices not related
to personal injury.
CAUTION, without the safety alert symbol,
is used to address practices not related to
personal injury.
Failure to follow all instructions listed below may result in electric shock,
re, and/or serious injury. The term “power tool” in all of the warnings listed
below refers to your line-operated (corded) power tool or battery-operated
(cordless) power tool.
SAVE THESE INSTRUCTIONS
1.
2.
3.
4.
5.
6.
7.
8.
KEEP WORK AREA CLEAN. Cluttered areas invite injuries.
OBSERVE WORK AREA CONDITIONS. Do not use machines or power tools in damp,
wet, or poorly lit locations. Don’t expose to rain. Keep work area well lit. Do not use elec-
trically powered tools in the presence of ammable gases or liquids.
KEEP CHILDREN AWAY. Children must never be allowed in the work area. Do not let
them handle machines, tools, or extension cords.
STORE IDLE EQUIPMENT. When not in use, tools must be locked up in a dry location to
inhibit rust. Always lock up tools and keep out of reach of children.
DO NOT FORCE THE TOOL. It will do the job better and more safely at the rate for
which it was intended. Do not use inappropriate attachments in an attempt to exceed the
tool’s capacities.
USE THE RIGHT TOOL FOR THE JOB. Do not attempt to force a small tool or attach-
ment to do the work of a larger industrial tool. Do not use a tool for a purpose for which it
was not intended.
DRESS PROPERLY. Do not wear loose clothing or jewelry as they can be caught in
moving parts. Protective, electrically non-conductive clothes and non-skid footwear are
recommended when working. Wear restrictive hair covering to contain long hair.
USE EYE AND EAR PROTECTION. Always wear ANSI-approved chemical splash gog-
gles when working with chemicals. Always wear ANSI-approved impact safety goggles
at other times. Wear a full face shield if you are producing metal lings or wood chips.
Wear and ANSI approved dust mask or respirator when working around metal, wood,
and chemical dusts and mists.
9.
10.
11.
12.
DO NOT ABUSE THE POWER CORD. Do not yank it to disconnect it from the recep-
tacle. Do not carry tools by the cord.
DO NOT OVERREACH. Keep proper footing and balance at all times. Do not reach over
or across running machines.
MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for better and safer perfor-
mance. Follow instructions for lubricating and changing accessories. Inspect tool cords c
and, if damaged, have them repaired by an authorized technician. The handles must be
kept clean, dry, and free from oil and grease at all times.
DISCONNECT POWER. Unplug when not in use, before servicing, and when changing
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 lter out microscopic particles. (California Health & Safety Code § 25249.5, et seq.)
24.
The warnings, precautions, and instructions discussed in this instruction 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.
WARNINGWARNING
SAVE THESE INSTRUCTIONS.
GROUNDING
Improperly connecting the grounding wire can result in electric
shock.
Check with a qualied electrician if you are in doubt as to whether
the outlet is properly grounded. Do not modify the power cord
plug provided with the tool. Do not use the tool if the power cord
or plug is damaged. If damaged, have it repaired by a service
facility before use. If the plug will not t the outlet, have a proper
outlet installed by a qualied electrician.
Double Insulated Tools: Tools with Two Prong Plugs
1.
2.
1.
2.
Tools marked “Double Insulated” do not require
grounding. They have a special double insula-
tion system which satises OSHA requirements
and complies with the applicable standards of
Underwriters Laboratories, Inc., the Canadian
Standard Association, and the National Electrical
Code. (See Outlets for 2-Prong Plug.)
Double insulated tools may be used in either of
the 120 volt outlets shown in the illustration to
the right. (See Outlets for 2-Prong Plug.)
Outlets for 2-Prong PlugOutlets for 2-Prong Plug
Extension Cords
Grounded tools require a three wire extension cord. Double Insulated tools can use
either a two or three wire extension cord.
As the distance from the supply outlet increases, you must use a heavier gauge exten-
sion cord. Using extension cords with inadequately sized wire causes a serious drop in
voltage, resulting in loss of power and possible tool damage.
When unpacking, check to make sure that the item is intact and undamaged. 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.
OPERATING INSTRUCTIONS
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning
of this manual including all text under subheadings therein before set up or use
of this product.
General Guidelines
1.
2.
3.
4.
5.
Use sockets designed for impact wrench use.
Do not use sockets with drives smaller than
1
/2”. You may use impact socket adapters to
use impact sockets with drives greater than
1
/2”.
Only use socket extensions designed for
impact use.
Pressing the top of the ROCKER SWITCH
(6) up will cause the ANVIL (16) to move in
a counterclockwise direction. This will com-
monly loosen the fastener.
Pressing the bottom of the ROCKER SWITCH down will cause the ANVIL to move in a
clockwise direction. This will commonly tighten the fastener.
Figure 1 -- Operation
Figure 1 -- Operation
“Breaking Loose” Fasteners
Note: This procedure is used when a fastener becomes “frozen”, typically due to corrosion.
This procedure assumes that the threads are standard (clockwise to tighten, counter
clockwise to loosen). If the threads are reversed, you must reverse the switch directions
contained herein.
1.
Spray silicon or another appropriate lubricant on the fastener and allow it to sit for 15-30
minutes.
2.
Rapidly press the ROCKER SWITCH (6) up and then down. This will cause the ANVIL
(16) change direction rapidly and loosen the bolt.
Risk of serious personal injury from accidental starting or electric
shock. Turn the Power Switch of the tool to its “OFF” position and
unplug the tool from its electrical outlet before performing any
inspection, maintenance, or cleaning procedures.
Damaged equipment can fail, causing serious personal injury.
Do not use damaged equipment. If abnormal noise or vibration
occurs, have the problem corrected before further use.
1.
2.
3.
Brushes
Note: Both BRUSHES (3) must be replaced at the
1.
2.
3.
4.
BEFORE EACH USE, inspect the general condition of the tool. Check for loose screws,
misalignment or binding of moving parts, cracked or broken parts, damaged electrical
wiring, and any other condition that may affect its safe operation.
AFTER USE, clean external surfaces of the tool with clean, moist cloth.
WARNING! If the supply cord of this power tool is damaged, it must be replaced
only by a qualied service technician.
same time.
The BRUSHES must be changed when
less than 3/8” remains or when perfor-
mance noticeably degrades.
Remove the BRUSH CAP (5) using a large,
at-head screwdriver.
Remove the BRUSH and replace.
Replace the BRUSH CAP.
Figure 2 -- Brush Replacement
Figure 2 -- Brush Replacement
Lubrication
Note: The following procedures should only be attempted by a qualied technician. The in-
structions are only provided for their reference. Refer to the Parts Diagram for num-
bered call-outs.
1.
2.
3.
4.
The gears must be lubricated after every 30 hours of continuous use or 50 hours of inter-
mittent use.
Open the GEAR CASE (13) by removing the four SCREWS (12).
Liberally apply a high temperature grease (standard automotive wheel grease is suf-
cient). to the THRUST WASHER (14), the back of the ANVIL (16), IMPACTOR (19),
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY
DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR
DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT
HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR 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 REPLACEMENTS SHOULD
BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE
BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE
ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER
INSTALLATION OF REPLACEMENT PARTS THERETO.
Harbor Freight Tools 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 90 days from the date of purchase. This
warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence or
accidents, repairs or alterations outside our facilities, criminal activity, improper installation, normal wear and tear, 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 veries 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 specic 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