Maintenance - DeWalt DW251-XE Instruction Manual

2. Place nutsetter into clutch housing and push end of nutsetter until ball lock snaps
into groove of nutsetter shank.
3. Reassemble adjustment collar by snapping over springs (Fig. 4).
NOTE: Align ribs on inside of depth locator with grooves in clutch housing.
DEPTH ADJUSTMENT
1. For washer head screws: rotate adjustment collar until end of nutsetter is flush
with end of locator.
2. For large washer head and sealer screws: adjust as above until nutsetter is
recessed approximately 1.6 mm (1/16") into the locator.
3. Test drive a fastener in scrap material to determine if seating is correct.
4. Adjust following the graphic printed on the tool.
VERSA CLUTCH™ UNITS
(DW267-XE, DW268-XE, DW268-220-XE, DW268G-XE, DW269-XE)
External adjustment of all Versa Clutch™ units for a wide range of fastener sizes is
fast and easy as follows (Fig. 5):
1. Pull forward, then rotate collar in increase direction (stamped on adjustment
collar) to increase the amount of clutch engagement and torque output.
FIG. 5
VERSA CLUTCH™
2. Maximum rotation of the collar in the increase direction results in full clutch
engagement and maximum torque output and fastener capacity. Collar and
adjustable stop will not screw off clutch housing.
3. Test drive a fastener into a scrap piece to check proper fastener seating. It is
normal after a period of use to require a slightly different collar setting due to
wear on the clutch faces.
NOTE: With Versa Clutch™, the operator has the ability to "override" clutch ratchet if
a fastener hits a wood knot, variable hardness in steel work pieces or incorrect pilot
holes. Increased operator pressure will usually cause the clutches to pick-up and
continue to seat the fastener. Further, a quick twist of the collar will change the clutch
setting to overcome most driving difficulties and will provide for immediate change in
torque output giving the operator the option to drive a wide range of fastener sizes.
Positive Clutch Units (DW281-XE, DW282-XE, DW284-XE)
1. Install proper bit and set screwdriver for correct rotation.
2. Place fastener on bit and contact work.
3. Apply steady pressure on screwdriver to keep clutches engaged and bit in
contact with fastener.
4. Upon fastener seating, clutches will ratchet. Disengage bit from fastener.

MAINTENANCE

WARNING: Shock Hazard. To reduce the risk of serious personal injury, turn tool
off and disconnect tool from power source before making any adjustments or
removing/installing attachments or accessories.
Cleaning
WARNING: Blow dirt and dust out of all air vents with dry air at least once a week.
Wear proper ANSI Z87.1 (CAN/CSA Z94.3) eye protection and proper NIOSH/OSHA/
MSHA respiratory protection when performing this.
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.
DRYWALL SCREWDRIVERS: Depth locator and adjustment collar should be removed
and drywall dust blown out of the clutch housing area at least once a week.
5