Operation - Makita HR3540C Instruction Manual

ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the
tool.
Installing side grip (auxiliary handle)
► Fig.8: 1. Side grip
CAUTION:
• Always use the side grip to ensure operating
safety when drilling in concrete, masonry, etc.
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.
Installing or removing the bit
► Fig.9: 1. Bit shank 2. Bit grease
Clean the bit shank and apply bit grease before install-
ing the bit.
Insert the bit into the tool. Turn the bit and push it in until
it engages.
► Fig.10: 1. Bit 2. Chuck cover
If the bit cannot be pushed in, remove the bit. Pull the
chuck cover down a couple of times. Then insert the bit
again. Turn the bit and push it in until it engages.
After installing, always make sure that the bit is securely
held in place by trying to pull it out.
To remove the bit, pull the chuck cover down all the way
and pull the bit out.
► Fig.11: 1. Bit 2. Chuck cover
Bit angle (when chipping, scaling or
demolishing)
► Fig.12: 1. Change lever 2. Lock button 3. Pointer
The bit can be secured at 24 different angles. To change
the bit angle, depress the lock button and rotate the
change lever so that the pointer points to the
Turn the bit to the desired angle.
Depress the lock button and rotate the change lever so
that the pointer points to the
that the bit is securely held in place by turning it slightly.
Depth gauge
► Fig.13: 1. Depth gauge 2. Clamp screw
The depth gauge is convenient for drilling holes of
uniform depth. Loosen the clamp screw and adjust
the depth gauge to the desired depth. After adjusting,
tighten the clamp screw firmly.
NOTE:
• The depth gauge cannot be used at the position
where the depth gauge strikes against the gear
housing/motor housing.
symbol.
symbol. Then make sure

OPERATION

CAUTION:
• Always use the side grip (auxiliary handle) and
firmly hold the tool by both side grip and switch
handle during operations.
Hammer drilling operation
► Fig.14
Set the change lever to the
Position the bit at the desired location for the hole, then
pull the switch trigger. Do not force the tool. Light pres-
sure 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 the bit partially from the hole. By
repeating this several times, the hole will be cleaned out
and normal drilling may be resumed.
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.
Blow-out bulb (optional accessory)
► Fig.15: 1. Blow-out bulb
After drilling the hole, use the blow-out bulb to clean the
dust out of the hole.
Chipping/Scaling/Demolition
► Fig.16
Set the change lever to the
Hold the tool firmly with both hands. Turn the tool on
and apply slight pressure on the tool so that the tool will
not bounce around, uncontrolled. Pressing very hard on
the tool will not increase the efficiency.
Drilling in wood or metal
► Fig.17
Use the optional keyless drill chuck assembly. When
installing it, refer to "Installing or removing the bit"
described on the previous page.
Set the change lever so that the pointer points to
the symbol.
Hold the ring and turn the sleeve counterclockwise to
open the chuck jaws. Place the bit in the chuck as far as
it will go. Hold the ring firmly and turn the sleeve clock-
wise to tighten the chuck. To remove the bit, hold the
ring and turn the sleeve counterclockwise.
8 ENGLISH
symbol.
symbol.