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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, D25553, 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
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 lock-on slider (B) is used
in any mode except the chipping mode.
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 serious personal injury,
turn tool off and disconnect tool from power source before
making any adjustments or removing/installing attachments
or accessories.
WARNING: To reduce the risk of personal injury, ALWAYS
ensure workpiece is anchored or clamped firmly. If drilling thin
material, use a wood “back-up” block to prevent damage to the
material.
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.
Proper Hand Position (Fig. 1)
WARNING: To reduce the risk of serious personal injury,
ALWAYS use proper hand position as shown.
WARNING: To reduce therisk of serious personal injury, ALWAYS
hold securely in anticipation of a sudden reaction.
Proper hand position requires one hand on the side handle (C), with
the other hand on the main handle (D).
NOTE: Operating temperature of this tool is 19˚ to 104˚ F (-7
to +40˚ C). Using the tool outside of this temperature range will
decrease the life of the tool.
Trigger Switch (Fig. 1)
To turn the tool on, depress the trigger switch (A). To stop the tool,
release the trigger switch.