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Accessories
WARNING: Since accessories, other than those offered by DEWALT, have not been tested with
this product, use of such accessories with this tool could be hazardous. To reduce the risk of injury,
only D
EWALT, recommended accessories should be used with this product.
DCN6901 RETURN SPRING REPLACEMENT KIT
WARNING: For your own safety, read the tool instruction manual before using any accessory.
Failure to heed these warnings may result in serious personal injury and damage to the tool and the
accessory. When servicing this tool, use only identical replacement parts.
NOTICE: All the mechanical parts of the spring replacment kit are shown for convenience and
verification of inclusion. The kit also contains a packet of Loctite adhesive for use in step8. Refer to
Fig. 20.
TO CHANGE BROKEN RETURN SPRINGS:
NOTE: Springs should be replaced as a pair, using only the correct D
EWALT accessory spring
replacement kit.
1. Using the key (K) provided, loosen the two screws (aa) on either side of the unit. Refer to
Figure15.
2. Remove the return system (bb) from the unit. Refer to Figure 16.
FIG. 15 FIG. 16
K
aa
bb
3. Slide the spring rail clip (cc) off of the spring rail (dd). Refer to figure17.
4. Twist and remove the Spring Bumper (ee) and remove the washer (ff) and return spring (gg). Refer
to figure 18.
5. Mount the new return spring and washer on to the spring rail (dd). While compressing the spring
with the washer near the opposite end of the rail, twist on the new spring bumper until it is past
the groove (hh) for the spring rail clip.
6. Mount the new spring rail clip securely and position the bumper against the clip.
7. Repeat steps 3–6 for the second spring.
NOTE: Check the return of the profile by sliding the profile up the spring rail and letting it go. It
should return due to the force from the springs.
8. Slide the return system (bb) back into the unit. It is important to try the alignment of the profile
and the flywheel before screwing the return system back on to the unit. This can be done by
connecting a battery and pushing then releasing the nose of the unit against a bench or hard
surface. This will start the motor spinning.
NOTE: When the profile and the flywheel are correctly aligned, you will hear the motor coast back
down from full speed. If the profile and the flywheel are not correctly aligned, the motor it may not
start up, may slow down much faster than normal along with a loud grinding noise from the unit.
If this happens remove and reseat the return system.
9. Once the return system is correctly seated, open the provided sachet of Loctite
®
* and apply a
small amount on the thread of the two screws (aa) and remount the two screws using the key
and tighten securely.
FIG. 17 FIG. 18 FIG. 19
FIG. 20
cc
gg
dd
ee
ff
hh
ee
cc
aa
WARNING: Always test the unit by firing short nails in to soft wood, to ensure that the tool is
working properly. If tool does not operate properly, contact a recognized D
EWALT service center
immediately.
WARNING: LOCTITE
®
SACHET CONTENTS MAY IRRITATE EYES, SKIN, AND RESPIRATORY
SYETEM. USE ENTIRE CONTENTS ON OPENING. Do not breath fumes. Do not get in eyes or
on skin or clothing. Use only in a well ventilated area. Keep out of reach of children. FIRST AID
TREATMENT: Contains polyglycol dimethacrylate, polyglycol oleate, propylene glycol, titanium
dioxide, and cumene hydroperoxide. If swallowed, call a Poison Control Center or doctor immediately.
Do not induce vomitting. If breathed in move person to fresh air. If in eyes, rinse with water for 15
minutes. Obtain medical attention. If on skin, rinse well with water. If on clothes, remove clothes.
*Loctite® is a registered trademark of Henkel Corp.
Recommended accessories for use with your tool are available at extra cost from your local dealer or
authorized service center. If you need assistance in locating any accessory, please contact D
EWALT
Industrial Tool Co., 701 East Joppa Road, Baltimore, MD 21286, call 1-800-4-D
EWALT (1-800-433-
9258) or visit our website www.D
EWALT.com.
Repairs
The charger and battery pack are not serviceable.