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2. Press variable speed trigger switch
Release variable speed trigger switch to stop operation.
Always check torque with a torque wrench, as the
fastening torque is affected by many factors including
the following:
Voltage: Low voltage, due to a nearly discharged
‑
battery, will reduce fastening torque.
Accessory size: Failure to use the correct accessory
‑
size will cause a reduction in fastening torque.
Bolt size: Larger bolt diameters generally
‑
require higher fastening torque. Fastening torque
will also vary according to length, grade, and
torque coefficient.
Bolt: Ensure that all threads are free of rust and other
‑
debris to allow proper fastening torque.
Material: The type of material and surface finish of
‑
the material will affect fastening torque.
Fastening time: Longer fasten ing time results in
‑
increased fastening torque. Using a longer fastening
time than recommended could cause the fasteners
to be overstressed, stripped or damaged.
specifications (DCF961)
Max. fastening torque
Precision Wrench™
Max. breakaway torque
No load speed
Impacts per minute
Length
Weight
specifications (DCF964)
Max. fastening torque
Precision Wrench™
Max. breakaway torque
No load speed
Impacts per minute
Length
Weight
MAINTENANCE
WARNING: To reduce the risk of serious personal
injury, turn unit off and remove the battery pack
before making any adjustments or removing/
installing attachments or accessories. An
accidental start‑up can cause injury.
Your D
WALT power tool has been designed to operate
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over a long period of time with a minimum of maintenance.
10
1
to start operation.
Low mode: 100 ft‑lb (135 Nm)
Medium mode: 535 ft‑lb (725 Nm)
High mode: 1320 ft‑lb (1789 Nm)
1100 ft‑lbs (1491 Nm)
1900 ft‑lbs (2576 Nm)
0–1200 rpm
0–1890 ipm
8.43" (214 mm)
7.65 lbs. (3.5 kg)
Low mode: 500 ft‑lb (677 Nm)
Medium mode: 840 ft‑lb (1138 Nm)
High mode: 1420 ft‑lb (1925 Nm)
1275 ft‑lbs (1728 Nm)
1900 ft‑lb (2576 Nm)
0–1200 rpm
0–2015 ipm
8.78" (223 mm)
8.14 lbs. (3.7 kg)
Continuous satisfactory operation depends upon proper tool
care and regular cleaning.
Cleaning
WARNING: Blow dirt and dust out of all air vents with
clean, dry air at least once a week. To minimize the risk
of eye injury, always wear ANSI Z87.1 approved eye
protection when performing this procedure.
WARNING: Never use solvents or other harsh
chemicals for cleaning the non‑metallic parts of the
tool. These chemicals may weaken the plastic materials
used in these parts. Use a cloth dampened only with
water and mild soap. Never let any liquid get inside the
tool; never immerse any part of the tool into a liquid.
Accessories
WARNING: Since accessories, other than those offered
by D
WALT, have not been tested with this product,
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use of such accessories with this product could be
hazardous. To reduce the risk of injury, only D
recommended accessories should be used with
this product.
Recommended accessories for use with your product are
available at extra cost from your local dealer or authorized
service center. If you need assistance in locating any
accessory, please contact D
(1‑800‑433‑9258) or visit our website: www.dewalt.com.
Impact Accessories
WARNING: Use only impact accessories. Non‑impact
accessories may break and cause a hazardous
condition. Inspect accessories prior to use to ensure that
they contain no cracks.
Repairs
The charger and batteries are not serviceable. There are no
serviceable parts inside the charger or battery pack.
WARNING: To assure product SAFETY and RELIABILITY,
repairs, maintenance and adjustment (including
brush inspection and replacement, when applicable)
should be performed by a factory service center or
an authorized service center. Always use identical
replacement parts.
Register Online
Thank you for your purchase. Register your product now for:
• WARRAnTY sERViCE: Registering your product will
help you obtain more efficient warranty service in case
there is a problem with your product.
• COnFiRMATiOn OF OWnERshiP: In case of an
insurance loss, such as fire, flood or theft, your registration
of ownership will serve as your proof of purchase.
• FOR YOUR sAFETY: Registering your product will allow
us to contact you in the unlikely event a safety notification
is required under the Federal Consumer Safety Act.
• Register online at www.dewalt.com.
WALT
e
WALT. Call 1‑800‑4‑D
WALT
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