
12V DC Electric Impact Wrench
INSTRUCTION MANUAL
Model # IW12BX
Thank you for purchasing this IW12BX Electric Impact Wrench. This manual provides important information on its
proper operation and maintenance. Every effort has been made to ensure the accuracy of this manual. We reserve
the right to change this product at any time without prior notice.
Before use, read carefully and understand all warnings, cautions, instructions and labels. Failure to do so could
result in serious personal injury, property damage or even death.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.
STOP!
DO NOT RETURN THIS TOOL TO THE RETAILER.
Questions? Problems? CONTACT BUFFALO TOOLS.
If you experience a problem or need parts for this product, visit our website http://www.buffalotools.com or call
our customer help line at 1-888-287-6981, Monday-Friday, 8 AM - 4 PM Central Time. A copy of the sales receipt
is required.
080310
Model IW12BX 12V 1/2" DC Electric Impact Wrench
1

Model IW12BX 12V 1/2" DC Electric Impact Wrench
FEATURES:
• 150 Ft. lbs. of Torque
• 11 Foot Cord Plugs Into Cigarette Lighter
• 2 Foot Adapter Cable For Hook-Up Directly To Car Battery
• 4 Piece, 1/2" Square Drive Impact Sockets: 11/16", 3/4", 13/16", and 7/8"
• Forward & Reverse Modes
• Lockable Trigger
• LED Light For Night Use
• 2 12A-250V Fuses
SPECIFICATIONS:
• Rated Current <15 AMP
• Rated Voltage 120V/60Hz
• Blows Per Minute 30-40 BPM
• Drive Size 1/2" Square
• Maximum Torque 150 Ft. lbs.
FOR CONSUMER USE ONLY – NOT FOR PROFESSIONAL USE
Model IW12BX 12V 1/2" DC Electric Impact Wrench
2

GENERAL SAFETY RULES FOR ALL ELECTRIC POWER TOOLS
WARNING: When using this tool, basic safety precautions should always be followed to reduce the risk of
personal injury and damage to equipment and vehicles. The warnings, cautions and instructions in this manual
cannot cover all situations and conditions. The user must exercise common sense.
READ ALL INSTRUCTIONS BEFORE USING THIS TOOL!
1) Keep work area clean. Cluttered areas invite injuries. If emergency dictates use of this tool on the road, keep
work area as clear of clutter as possible. Park vehicle on firm, level ground away from traffic.
2) Observe work area conditions. If forced to use this tool in wet or damp conditions, extreme care must be
observed as serious personal injury may result if tool is exposed to moisture.
3) Keep children away. Children must be kept at a safe distance when using this and other tools. Failure to do so
may result in serious injury or death.
4) Store idle equipment. When not in use, store the impact wrench in its carrying case. Store case in a dry location
to reduce chance of rust. Lock up tools and keep out of reach of children.
5) Use the right tool for the job. Use this tool only as intended. Do not modify this tool and do not use for a
purpose for which it was not intended.
6) Dress properly. Secure loose clothing, jewelry or long hair to prevent them from getting caught in moving parts
of the tool or vehicle, especially if using the battery adapter cable.
7) Use hearing and eye protection. Always use ANSI approved hearing and eye protection.
8) Maintain tools with care. Clean, properly functioning tools ensure better and safer performance. Inspect the
cord periodically and if damaged, have it repaired by an authorized technician. Failure to do so may result in
serious personal injury and possible damage to equipment or vehicle.
9) Disconnect power. Unplug tool when not in use.
10) Avoid unintentional starting. Be sure the trigger is locked when not in use and before plugging in. Do not carry
any tool with your finger on the trigger, whether it is plugged in or not.
11) Stay alert. Use common sense when using this and other tools. Do not use any tool when you are tired or under
the influence of drugs or alcohol. Failure to do so may result in damage to equipment, vehicle, personal injury or
death.
12) Replacement parts and accessories. When servicing, use only identical replacement parts. Use of any other
parts will void the warranty. Only use accessories intended for use with this tool. Contact Buffalo Tools at
888-287-6981 if you need a replacement part.
13) People with pacemakers should consult their physician(s) before using this product. Electromagnetic fields
in close proximity to a heart pacemaker could cause interference to or failure of the pacemaker.
14) Use this tool with both hands. This tool requires the use of both hands when operating. This helps maintain tool
stability and keeps hands away from the working area of the tool.
15) This unit should only be powered by 12 Volt DC systems. Do not alter the power cord for use in AC sockets.
Doing so is both dangerous and voids the warranty.
Model IW12BX 12V 1/2" DC Electric Impact Wrench
3