English
Electronic Speed and Impact Control (Fig. 5)
D25602, D25831, D25851
The electronic speed and impact control allows the use of smaller drill bits without the risk of bit breakage, hammerdrilling into light and brittle materials without shattering and optimal tool control for precise chipping.
To set the control dial, turn the dial (G) to the desired level. The higher the number, the greater the speed and impact energy. Dial settings make the tool extremely adaptable for many different appli- cations. The required setting depends on the bit size and hardness of material being drilled.
Mode Selector (Fig. 1)
CAUTION: Never change the mode while the unit is running. 
CAUTION: Do not change to hammerdrill mode with chisel bit in
tool holder. Personal injury and damage to tool may result.
The D25501, D25601, D25602 uses two operating modes. To select the required operating mode, rotate the mode selector (F) until the arrow points to the hammerdrilling or the chipping icon. The D25820, D25831 uses only the chipping mode.
HAMMERDRILLING MODE (
)
The tool simultaneously rotates and impacts the work. This mode is appropriate for all concrete and masonry operations.
CHIPPING MODE (
)
The spindle lock is engaged during chipping mode so the tool impacts the work without rotating. This mode is appropriate for light chipping, chiseling and demolition applications.
NOTE: In chipping mode, the hammerdrill can also be used as a lever to free a jammed drill bit.
CHISEL BIT ADJUSTMENT ( 
)
Turn the mode selector to one of the chisel bit adjustment icons to adjust the chisel to the desired position. There are 18 possible positions to set the angle of the chisel. After finding the desired position, slightly maneuver the chisel bit back and forth to ensure the chisel is properly engaged.
Power Indicator Lights (Fig. 5)
The yellow brushwear indicator LED (V) lights up when the carbon brushes are nearly worn out indicating that the tool needs servicing within the next 8 hours of use.
The red indicator LED (W) lights up if the
The red indicator LED (W) flashes if there is a fault with the tool or if the brushes are completely worn (refer to Brushes under Maintenance).
OPERATION
WARNING: Always observe the safety instructions and applicable regulations.
WARNING: To reduce the risk of injury, turn unit off and disconnect tool from power source before installing and removing accessories, before making any adjustments or removing/installing attachments or accessories. An accidental
WARNING: To reduce the risk of personal injury, ALWAYS ensure workpiece is anchored or clamped firmly. If drilling thin material, use a wood
WARNING: To reduce the risk of personal injury, ALWAYS operate the tool with the side handle properly installed and securely tightened. Failure to do so may result in the side handle slipping during tool operation and subsequent loss of control. Hold tool with both hands to maximize control.
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