DeWalt DW551 Instruction Manual page 5

154730/DW551 5/17/02 3:03 PM
• STAY ALERT. Watch what you are doing. Use common sense.
Do not operate tool when you are tired.
• CHECK DAMAGED PARTS. Before further use of the tool, a
guard or other part that is damaged should be carefully checked
to determine that it will operate properly and perform its intended
function. Check for alignment of moving parts, binding of moving
parts, breakage of parts, mounting, and any other conditions that
may affect its operation. A guard or other part that is damaged
should be properly repaired or replaced by an authorized service
center unless otherwise indicated elsewhere in this instruction
manual. Have defective switches replaced by authorized service
center. Do not use tool if switch does not turn it on and off.
Additional Safety Instructions for
Hammers
• WEAR SAFETY GOGGLES or other eye protection.
• WEAR EAR PROTECTORS when hammering for extended
periods.
• ALWAYS USE THE SIDE HANDLE supplied with the tool. Keep a
firm grip on the hammer when it is operating.
• DON'T OVERREACH. Maintain a firm, balanced working stance.
When necessary, use only properly positioned, safe platforms,
ladders and scaffolds, to do the job safely.
• Hammer bits and tools get hot in operation. Wear gloves when
touching them.
• CAUTION: When drilling or driving into walls, floors or
wherever "live" electrical wires may be encountered, DO NOT
TOUCH ANY FRONT METAL PARTS OF THE TOOL! Hold the
tool only by the plastic handle to prevent shock if you drill or drive
into a "live" wire.
SAVE THESE INSTRUCTIONS
Page 2
Motor
Your tool is powered by a D
E
supply agrees with nameplate marking.
Voltage decrease of more than 10% will cause loss of power and
overheating. All D WALT tools are factory tested; if this tool does not
E
operate, check the power supply.
Side Handle (Fig. 1)
ALWAYS OPERATE THE TOOL WITH THE SIDE HANDLE
PROPERLY ASSEMBLED.
1. Snap the steel ring over the collar behind the tool holder. Squeeze
both ends together, mount the bush and insert the pin.
2. Place the side handle, with the narrow end toward the front of the
tool, over the bush and pin.
3. Place the washer over the hole in the side handle,and insert the
clamp knob. Screw in the clamp knob, but do not tighten.
6. Rotate the side handle mounting assembly to the desired position.
For drilling horizontally with a heavy drill bit, place the side handle
assembly at an angle of approximately 20˚ for optimum control.
7. Lock the side handle in place by fully tightening the clamp knob.
Electronic Impact Control (Fig. 2)
The electronic impact control allows you to adjust the impact energy
of the hammer. For optimal control and precise chiseling of light and
brittle materials, use a lower setting. A higher setting provides power
for harder materials. To set the control dial: Turn the dial to the
desired level. The higher the number, the greater the impact energy.
With dial settings from "1" to "7" (full power) the tool is extremely
flexible and adaptable for many different applications. The required
setting depends on the hardness of material being chiseled.
2
WALT built motor. Be sure your power