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1. For forward (clockwise) rotation, push the forward/reverse lever
to the symbol .
2. For reverse (counterclockwise) rotation, push the forward/reverse
lever to the symbol .
NOTE: When drilling with hammer action, use the tool in forward rotation
(clockwise) only.
Starting, Stopping & Controlling Speed
1. To start the tool, pull trigger.
2. To stop the tool, release trigger.
3. To vary the speed, increase or decrease pressure to trigger. The
further the trigger is pulled, the greater the speed.
Operating
Position the tool, grasp the handles firmly and pull the trigger. Always
hold the tool securely using both handles and maintain control. This tool
has been designed to achieve top performance with only moderate
pressure. Let the tool do the work.
If the speed begins to drop off when drilling deep holes, pull the bit
partially out of the hole while the tool is running to help clear dust. Do not
use water to settle the dust since it will clog the bit flutes and tend to
make the bit bind in the hole.
APPLICATIONS
Drilling in Wood, Composition Materials and Plastic
When drilling in wood, composition materials and plastic, select the drill
operating mode. Start the drill slowly, gradually increasing speed as you
drill. When drilling into wood, use wood augers or twist drill bits. Always
use sharp bits. Select low speeds for plastics with a low melting point.
Drilling in Metal
When drilling in metal, select the drill operating mode. Use high speed
steel twist drills or hole saws. Use a center punch to start the hole.
Lubricate drill bits with cutting oil when drilling in iron or steel. Use a
coolant when drilling in nonferrous metals such as copper, brass or
aluminum. Back the material to prevent binding and distortion on
breakthrough.
To reduce the risk of electric shock,
check work area for hidden pipes and
wires before drilling.
WARNING!
Drilling in Masonry
When drilling in masonry, select the drill with hammer action operating
mode. Use high speed carbide-tipped bits. Drilling soft masonry materials
such as cinder block requires little pressure. Hard materials like concrete
require more pressure. A smooth, even flow of dust indicates the proper
drilling rate. Do not let the bit spin in the hole without cutting. Do not
attempt to drill through steel reinforcing rods. Do not use water to settle
dust or to cool bit. Both actions will damage the carbide.
OPERATION
To reduce the risk of injury, wear safety goggles
or glasses with side shields. Unplug the tool
before changing accessories or making
adjustments.
WARNING!
Selecting Action (Fig. 4)
The MILWAUKEE 5383-20 Rotary Hammer has two settings: drilling and
drilling with hammer action. See “Applications” for recommended set-
tings under various conditions.
Using Forward/Reverse Lever (Fig. 5)
The forward/reverse lever can only be adjusted when the trigger is not
pressed. Always allow the motor to come to a complete stop before
using the forward/reverse lever.
1. For drilling, turn the selector lever to the drill symbol .
2. For drilling with hammer action, turn the selector lever
to the hammer-drill symbol .
NOTE: To engage the hammering mechanism, maintain pressure on
the bit. When pressure on the bit is released, the hammering action
will stop.
Selector lever
Fig. 4
Fig. 5
Forward Reverse