Makita HR1820 Manual De Instrucciones página 6

Adjusting depth of drilling (Fig. 2)
Loosen the wing bolt and adjust the depth gauge to
the desired depth. After adjusting, tighten the wing
bolt.
Side grip (auxiliary handle) (Fig. 3)
The side grip swings around to either side, allowing
easy handling of the tool in any position. Loosen
the side grip by turning it counterclockwise, swing it to
the desired position and then tighten it by turning
clockwise.
Selecting action mode
For HR1820 (Fig. 4 & 5)
Rotation with hammering:
For drilling in concrete, granite, tile, etc., press the
push rod in the
Rotation only:
For drilling in wood or metal, press the push rod in the
direction. (Fig. 5)
CAUTION:
To avoid rapid wear on the mode change mechanism,
be sure to press the push rod as far as it will go.
For HR2510 (Fig. 6 & 7)
Rotation with hammering:
For drilling in concrete, granite, tile, etc., rotate the
change lever to the
Rotation only:
For drilling in wood or metal, rotate the change lever
to the position. (Fig. 7)
CAUTION:
To avoid rapid wear on the mode change mechanism,
be sure that the change lever is always positively
located in one of the two action mode positions.
Switch action (Fig. 8)
CAUTION:
• Before plugging in the tool, always check to
see that the switch trigger actuates properly and
returns to the ''OFF'' position when released.
• Do not tape, tie or otherwise secure the trigger in
the ''ON'' position.
To start the tool simply pull the trigger. Tool
speed is increased by increasing pressure on the
trigger. Release the trigger to stop. A speed control
screw is provided so that maximum tool speed
can be limited (variable). Turn the speed control
screw clockwise for higher speed, and counterclock-
wise for lower speed.
6
direction. (Fig. 4)
position. (Fig. 6)
Hammer drilling operation
Position the bit at the location for the hole, then pull
the trigger.
Do not force the tool. Light pressure gives best
results. Keep the tool in position and prevent it
from slipping away from the hole.
Do not apply more pressure when the hole becomes
clogged with chips or particles. Instead, run the
tool at an idle, then remove from the hole. By
repeating this several times, the hole will be cleaned
out.
CAUTION:
When the bit begins to break through concrete or if
the bit strikes reinforcing rods embedded in concrete,
the tool may react dangerously. Maintain good
balance and safe footing while holding the tool
firmly with both hands to prevent dangerous reaction.
Dust collector (Fig. 9)
Use the dust collector for safe, sanitary overhead
operations. Install the bit, then attach the dust collec-
tor on the end by turning and applying pressure. Then
secure it by turning the metal retainer clockwise.
CAUTION:
Empty the dust collector of its contents after drilling
every 2 or 3 holes.
Drilling in wood or metal (Fig. 10)
For HR1820
Set the push rod for ''rotation only''. Use the optional
drill chuck and chuck adapter for drilling up to 10 mm
in metal and up to 15 mm in wood. To install the drill
chuck and chuck adapter, refer to ''Installing or
removing drill bit''.
For HR2510
Set the change lever for ''rotation only''. Use the
optional drill chuck and chuck adapter for drilling up to
13 mm in metal and up to 30 mm in wood. To install
the drill chuck and chuck adapter, refer to ''Installing
or removing drill bit''.
CAUTION:
When the drill chuck is installed on this tool, do
not use ''rotation with hammering'' action. The drill
chuck and chuck adapter may be damaged.