User Manual

13
ENGLISH
DCF902
Precision Wrench™ Mode Precision Wrench™
Lo Mode Low Speed Impacting
Hi Mode High Speed Impacting
Quick-Release Chuck (Fig.F)
DCF801

WARNING: Use only impact accessories. Non-impact
accessories may break and cause ahazardous condition.
Inspect accessory prior to use to ensure that it con tains
nocracks.
NOTE: The chuck accepts 6.35mm hex bit tips only. Using
25mm bits allows better access in tightspaces.
Place the forward/reverse button
4
in the locked off (centre)
position or remove battery pack before changingaccessories.
To install an accessory, push accessory to fully insert into
chuck
6
. The chuck collar
5
does not need to be pulled up to
lock accessory inplace.
To remove an accessory, pull the chuck collar away from the
front of the tool. Remove the accessory and release thecollar.
Anvil With Hog Ring (Fig.G)
DCF902

WARNING: Use only impact accessories. Non-impact
accessories may break and cause ahazardous condition.
Inspect accessory prior to use to ensure that it contains
nocracks.

CAUTION: Inspect anvils, detent pins, and hog rings prior
to use. Missing or damaged items should be replaced
beforeuse.
Place the forward/reverse button
4
in the locked off (centre)
position or remove battery pack before changingaccessories.
To install an accessory on the hog ring anvil, firmly push
accessory onto the anvil
10
. The hog ring
11
compresses to
allow the accessory to slide on. After accessory is installed, the
hog ring applies pressure to help provide accessoryretention.
To remove an accessory, grasp the accessory and firmly pull
itoff.
Usage
Your impact tool generates the following maximum torque:
Cat # Nm Ft.-Lbs. In.-Lbs
DCF801 163 120.8 1450
DCF902 168 125 1500

CAUTION: Ensure fastener and/or system will withstand
the level of torque generated by the tool. Excessive torque
may cause breakage and possible personalinjury.
1. Place the accessory on the fastener head. Keep the tool
pointed straight at thefastener.
2. Press switch to start operation. Release the 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 recom mended could cause the fasteners to
be overstressed, stripped ordamaged.
MAINTENANCE
Your DEWALT power tool has been designed to operate
over along period of time with aminimum of maintenance.
Continuous satisfactory operation depends upon proper tool
care and regularcleaning.

WARNING: To reduce the risk of serious personal
injury, turn tool off and disconnect battery pack
before making any adjustments or removing/
installing attachments or accessories. An accidental
start-up can causeinjury.
The charger and battery pack are notserviceable.
Lubrication
Your power tool requires no additionallubrication.
Cleaning

WARNING: Blow dirt and dust out of the main housing
with dry air as often as dirt is seen collecting in and around
the air vents. Wear approved eye protection and approved
dust mask 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 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.
Optional Accessories

WARNING: Since accessories, other than those offered
by D
EWALT , have not been tested with this product, use
of such accessories with this tool could be hazardous.
To reduce the risk of injury, only DEWALT recommended
accessories should be used with thisproduct.
Consult your dealer for further information on the
appropriateaccessories.