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Instruction Manual - Page 2
Adjustable Power Dial I D Trigger C. Exhaust H. Forward/Reverse Switch
SPECIFICATIONS
MODEL
DWMT74271
SQUARE DRIVE
3/4"
VARIABLE SPEED
3 SPEED
MAXIMUM TORQUE (REVERSE) 1,000 Ft.... PRESSURE
90 PSI
F a
G 2
E
B C D
H,I . Ergonomic Handle D. 1/4" NPT Air Inlet E Aluminum Body
F. Twin Hammer Mechanism G. English
DWMT74271
FIG.1
3/4" IMPACT WRENCH
A. 3/4" Square Drive B.
Instruction Manual - Page 3
... for optimal performance.
3 Please read the manual and pay attention to cause cancer, and birth defects or other masonry products • Arsenic and chromium from chemically-treated lumber
Your risk from these instructions in property damage. Read and understand all warnings and operating instructions before installing, operating or servicing this equipment. Used without the safety...
Instruction Manual - Page 4
... ensure equipment is in
safe working condition. • DO NOT put hands near or under moving parts and result in serious injury.
• DO NOT depress trigger when connecting the air supply hose....gases; When operating any other person. Make sure all connections are secure. • Keep all manuals included with air powered impact tools.
• DO NOT use hand tool sockets. Which could ...
Instruction Manual - Page 6
... on trigger.
• Repair service should be done only by an authorized service representative.
• A wrench...during maintenance or tool changes. What can happen
How to a rotating part of the tool increases the risk of personal injury.
• Remove....
• Do not apply excessive force to lubricate, add, or replace sockets.
• Never carry the tool by the manufacturer.
•...
Instruction Manual - Page 7
... misalignment or binding of moving parts, breakage of parts, and any other condition that affects the tool's operation.
Contact with a "live" wire will also make exposed metal parts of the tool "live"...This tool is not provided with an insulated gripping surface. If damaged, have the tool serviced before performing work.
7 English
RISK OF INJURY (continued)
What can happen
How to prevent...
Instruction Manual - Page 8
...ears, etc. Particles or objects propelled by the tool.
• Keep hands away from moving parts. Disconnect air hose when tool is not in use.
• For additional protection use an ... that any jewelry, watches, identifications, bracelets, necklaces, etc., which might become entangled in moving parts of the tool.
• Remove any attachments are capable of the tool away from hands and...
Instruction Manual - Page 9
...remain charged with the air line disconnected possibly causing injury.
• Always disconnect air supply:
1) Before making adjustments;
2) When servicing the tool;
3) When tool is disconnected. English
AIR SUPPLY AND CONNECTIONS
• Do not use oxygen, combustible gases, or... different work area, as tool may occur, possibly causing injury. SAVE THESE INSTRUCTIONS FOR FUTURE USE
9
Instruction Manual - Page 11
...can damage the tool. Never use , or before performing service or changing accessories.
4) Use proper hoses and fittings. ... an air supply has standard 1/4" NPT American thread. English
INSTALLATION
Air Supply
The recommended hook-up is recommended to prevent water...least a weekly schedule to remove
accumulated dirt or other problems. Replace the hose if worn.
2) Never point an air ...
Instruction Manual - Page 12
... on the tool.
Using An Impact Wrench
1) Read all instructions before and after each additional use impact-rated extension bars,...may be used with a suitable impact socket. Putting Into Service
Air Supply
This air tool requires lubrication BEFORE initial use,... an air filter, regulator, lubricator (FRL) is any other support device,
ensure that may be dangerous.
Do not use and ...
Instruction Manual - Page 13
... does not cause problems or blow onto ...tank to be filled. • Set the air compressor regulator to start...make temporary or permanent repairs with unauthorized parts.
11) Do ...Dewalt spare parts or parts which perform equivalently. Risk of bursting. Firmly grasp air hose with hand when installing...cleaning rags, etc.
Replace if necessary. This ...tool either in the manual.)
• Select the...
Instruction Manual - Page 14
...SERVICE INFORMATION
Please have other parts in the packaging, call 1-800-4-DeWALT... Air Tool Manually:
1. We will repair, without charge...repair information, call the local company or see website for all service calls: Model Number
Date and Place of Purchase
FULL THREE YEARS WARRANTY
DeWalt heavy duty industrial tools are missing, call a doctor immediately. This warranty gives you specific...
Instruction Manual - Page 15
..., have been evaluated by OSHA certified independent safety laboratories and meet the applicable Underwriters Laboratories Standards for tapered threads used on threaded pipes and fittings. Code Certification: Products that bear one or more of pressure. is a measure of the frequency of air delivery. ID: Inner diameter
15 RPM: Revolutions per square...
Instruction Manual - Page 44
and the array of the tool. the kit box configuration; the array of pyramids on the surface of lozenge-shaped humps on the handgrip; DeWALT Industrial Tool Co., 701 Joppa Road, Baltimore, MD 21286 Part No.DWMT74271 70102633 Copyright © 2014 DeWALT
The following are trademarks for one or more DeWALT power tools: the yellow and black color scheme; the "D" shaped air intake grill;
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