DeWalt DCD791 Original Instructions Manual page 25

DO nOT cLIck TRIGGER On anD OFF In an aTTEMPT TO
sTaRT a sTaLLED DRILL — THIs can DaMaGE THE DRILL.
7. To minimise stalling or breaking through the material, reduce
pressure on drill and ease the bit through the last fractional part
of the hole.
8. Keep the motor running when pulling the bit back out of a
drilled hole. This will help prevent jamming.
9. With variable speed drills there is no need to centre punch
the point to be drilled. Use a slow speed to start the hole and
accelerate by squeezing the trigger harder when the hole is
deep enough to drill without the bit skipping out.
Hammerdrill Operation (Fig. A, E)
DCD796 only
1. Turn the collar 3 to the hammerdrill symbol.
2. Select the high speed setting by sliding the gear shifter
back (away from the chuck).
IMPORTanT: Use carbide-tipped or masonry bits only.
3. Drill with just enough force on the hammer to keep it from
bouncing excessively or "rising" off the bit. Too much force will
cause slower drilling speeds, overheating and lower drilling rate.
4. Drill straight, keeping the bit at a right angle to the work. Do
not exert side pressure on the bit when drillling as this will cause
clogging of the bit flutes and a slower drilling speed.
5. When drilling deep holes, if the hammer speed starts to drop
off, pull the bit partially out of the hole with tool stil running to
help clear debris from the hole.
nOTE: A smooth, even flow of dust from the hole indicates
proper drilling rate.
Screwdriver Operation (Fig. A, F)
1. Turn the torque adjustment collar
2. Select the desired speed/torque range using the
gear shifter 4 to match the speed and torque of the
planned operation.
nOTE: Use the lowest torque setting required to seat the
fastener at the desired depth. The lower the number, the lower
the torque output.
3. Insert the desired fastener accessory into the chuck as you
would any drill bit.
4. Make some practice runs in scrap or on unseen areas to
determine the proper position of the clutch collar.
5. Always start with lower torque settings, then advance to
higher torque settings to avoid damage to the workpiece
or fastener.
MAINTENANCE
Your 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.
C
Lubrication
Your power tool requires no additional lubrication.
4
3 to the desired position.
D
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 WALT, have not been tested with this product, use of such
e
accessories with this tool could be hazardous. To reduce the risk
of injury, only D WALT recommended accessories should be used
e
with this product.
Consult your dealer for further information on the
appropriate accessories.
Protecting the Environment
w
Separate collection. Products and batteries marked
with this symbol must not be disposed of with
normal household waste.
Products and batteries contain materials that
can be recovered or recycled reducing the demand for raw
materials. Please recycle electrical products and batteries
according to local provisions. Further information is available at
www.2helpU.com.
Rechargeable Battery Pack
This long life battery pack must be recharged when it fails
to produce sufficient power on jobs which were easily done
before. At the end of its technical life, discard it with due care for
our environment:
• Run the battery pack down completely, then remove it from
the tool.
• Li-Ion cells are recyclable. Take them to your dealer or a local
recycling station. The collected battery packs will be recycled or
disposed of properly.
EnGLIsH
25