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. Tools required for assembly and service may not be included.
Specications
Charger Input120 V~ / 60 Hz
Charging Time3-5 Hours
Battery Type12V, Ni-Cd, 800 mAh
Nail Size2-1/2” Max. Length
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, 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.
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.
General Power Tool
Safety Warnings
WARNING Read all safety warnings and
instructions. Failure to follow the warnings and
instructions may result in electric shock, re and/
or serious injury.
Save all warnings and instructions for
future reference.
The term ″power tool″ in the warnings refers
to your mains-operated (corded) power tool
or battery-operated (cordless) power tool.
common sense when operating a power tool. Do
not use a power tool while you are tired or under
the inuence of drugs, alcohol or medication.
A moment of inattention while operating power
tools may result in serious personal injury.
b. Use personal protective equipment. Always
wear eye protection. Safety equipment such
as dust mask, non-skid safety shoes, hard
hat, or hearing protection used for appropriate
conditions will reduce personal injuries.
c. Prevent unintentional starting. Ensure the
switch is in the off-position before connecting
to power source and/or battery pack, picking
up or carrying the tool. Carrying power tools
with your nger on the switch or energizing power
tools that have the switch on invites accidents.
d. Remove any adjusting key or wrench
before turning the power tool on. A wrench
or a key left attached to a rotating part of the
power tool may result in personal injury.
e. Do not overreach. Keep proper footing and
balance at all times. This enables better control
of the power tool in unexpected situations.
f. Dress properly. Do not wear loose clothing or
jewelry. Keep your hair, clothing and gloves
away from moving parts. Loose clothes, jewelry
or long hair can be caught in moving parts.
g. If devices are provided for the connection of
dust extraction and collection facilities, ensure
these are connected and properly used. Use of
these devices can reduce dust-related hazards.
h. Only use safety equipment that has been
approved by an appropriate standards agency.
Unapproved safety equipment may not provide
adequate protection. Eye protection must be ANSIapproved and breathing protection must be NIOSHapproved for the specic hazards in the work area.
4. Power tool use and care
a. Do not force the power tool. Use the
correct power tool for your application. The
correct power tool will do the job better and
safer at the rate for which it was designed.
b. Do not use the power tool if the switch
does not turn it on and off. Any power
tool that cannot be controlled with the switch
is dangerous and must be repaired.
c. Disconnect the plug from the power source
and/or the battery pack from the power tool
before making any adjustments, changing
accessories, or storing power tools. Such
preventive safety measures reduce the risk
of starting the power tool accidentally.
d. Store idle power tools out of the reach of
children and do not allow persons unfamiliar
with the power tool or these instructions
to operate the power tool. Power tools are
dangerous in the hands of untrained users.
e. Maintain power tools. Check for misalignment
or binding of moving parts, breakage of parts
and any other condition that may affect the
power tool’s operation. If damaged, have the
power tool repaired before use. Many accidents
are caused by poorly maintained power tools.
f. Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
g. Use the power tool, accessories and tool bits
etc. in accordance with these instructions,
taking into account the working conditions
and the work to be performed. Use of the
power tool for operations different from those
intended could result in a hazardous situation.
5. Battery tool use and care
a. Recharge only with the charger specied by
the manufacturer.A charger that is suitable
for one type of battery pack may create a risk
of re when used with another battery pack.
b. Use power tools only with specically
designated battery packs.Use of any other
battery packs may create a risk of injury and re.
c. When battery pack is not in use, keep it away
from other metal objects, like paper clips,
coins, keys, nails, screws or other small metal
objects, that can make a connection from
one terminal to another. Shorting the battery
terminals together may cause burns or a re.
d. Under abusive conditions, liquid may be
ejected from the battery; avoid contact.
If contact accidentally occurs, ush with
water. If liquid contacts eyes, additionally
seek medical help. Liquid ejected from the
battery may cause irritation or burns.
6. Service
a. Have your power tool serviced by a qualied
repair person using only identical replacement
parts. This will ensure that the safety of the power
1. Wear hearing protection during use; Auto Hammer is loud during operation.
2. Do not use Auto Hammer with
nails longer than 2-1/2”.
3. Do not leave Auto Hammer
unattended during charging.
4. Use as intended only. Use to hammer nails
into the following materials only: wood,
wood-like materials and plaster board.
5. Hold power tools by insulated gripping
surfaces when performing an operation where
the cutting tool may contact hidden wiring.
Contact with a ″live″ wire will make exposed metal
parts of the tool ″live″ and shock the operator.
6. Maintain labels and nameplates on the tool.
These carry important safety information. If
unreadable or missing, contact Harbor
Freight Tools for a replacement.
7. Avoid unintentional starting. Prepare to
begin work before turning on the tool.
8. 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.
9. When using a handheld power tool, maintain a rm grip
on the tool with both hands to resist starting torque.
10. Do not leave the tool unattended when it is plugged
into an electrical outlet. Turn off the tool, and
unplug it from its electrical outlet before leaving.
11. The battery charger gets hot during use.
The charger’s heat can build up to unsafe
levels and create a re hazard if it does not
receive adequate ventilation, due to an
electrical fault, or if it is used in a hot environment.
Do not place the charger on a ammable surface. Do
not obstruct any vents on the charger. Especially
avoid placing the charger on carpets and rugs; they
are not only ammable, but they also obstruct
vents under the charger.
Place the charger on a stable, solid, nonammable
surface (such as a stable metal workbench or concrete
oor) at least 1 foot away from all ammable objects,
such as drapes or walls. Keep a re extinguisher and a
smoke detector in the area. Frequently monitor the
charger and battery while charging.
12. This product is not a toy. Keep it
out of reach of children.
13. People with pacemakers should consult their
physician(s) before use. Electromagnetic elds in close
proximity to heart pacemaker could cause pacemaker
interference or pacemaker failure. In addition, people
with pacemakers should:
• Avoid operating alone.
• Do not use with power switch locked on.
• Properly maintain and inspect
to avoid electrical shock.
14. 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, 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 lter
out microscopic particles.
(California Health & Safety Code § 25249.5, et seq.)
15. WARNING: Handling the cord on this product’s charger
will expose you to lead, a chemical known to the State
of California to cause cancer, and birth defects or other
reproductive harm. Wash hands after handling.
(California Health & Safety Code § 25249.5, et seq.)
16. 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.
Vibration Safety
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 rst 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