5
12. Do not point the tool at any one in the area when
operating. The bit could fly out and injure some-
one seriously.
13. Do not touch the bit or parts close to the bit imme-
diately after operation; they may be extremely hot
and could burn your skin.
14. Do not operate the tool at no-load unnecessarily.
15. Some material contains chemicals which may be
toxic. Take caution to prevent dust inhalation and
skin contact. Follow material supplier safety data.
SAVE THESE INSTRUCTIONS
WARNING:
MISUSE or failure to follow the safety rules stated in
this instruction manual may cause serious personal
injury.
FUNCTIONAL DESCRIPTION
CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function on the
tool.
Switch action (Fig. 1)
CAUTION:
• Before plugging in the tool, always check to see that
the switch trigger actuates properly and returns to the
“OFF” position when released.
To start the tool, simply pull the switch trigger. Release the
switch trigger to stop.
For continuous operation, pull the switch trigger and then
push in the lock button.
To stop the tool from the locked position, pull the switch
trigger fully, then release it.
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. 2)
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 posi-
tion and then tighten it by turning clockwise.
Installing or removing the bit (Fig. 3 & 4)
Pull the change ring down all the way and insert the bit
into the tool holder as far as it will go. Release the change
ring and it will return automatically to its original position to
secure the bit. 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 change ring down all the way
and pull the bit out.
CAUTION:
• After installing the bit, always make sure that the bit is
securely held in place by trying to pull it out.
OPERATION (Fig. 5)
Chipping/Scaling/Demolition
Always hold the tool firmly with one hand on the side grip
and other hand on the main handle.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.
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection or
maintenance.
Replacing carbon brushes
When the resin insulating tip inside the carbon brush is
exposed to contact the commutator, it will automatically
shut off the motor. When this occurs, both carbon brushes
should be replaced. Keep the carbon brushes clean and
free to slip in the holders. Both carbon brushes should be
replaced at the same time. Use only identical carbon
brushes.
(Fig. 6)
Use a screwdriver to remove the rear cover. (Fig. 7)
Use a screwdriver to remove the brush holder caps. Take
out the worn carbon brushes, insert the new ones and
secure the brush holder caps. (Fig. 8)
Reinstall the rear cover firmly.
Lubrication (Fig. 9 & 10)
This tool requires no hourly or daily lubrication because it
has a grease-packed lubrication system. It should be relu-
bricated after every 6 months of operation. Send the com-
plete tool to Makita Authorized Service Center for this
lubrication service. However, if circumstances require that
you should lubricate it by yourself, proceed as follows.
Run the tool for several minutes to warm it up. Switch off
and unplug the tool.
Remove the crank cap by loosening hex bolts (3 pcs.)
securing it with a hex wrench. Rest the tool on the table
with the bit end pointing upwards. This will allow the old
grease to collect inside the crank housing.
Wipe out the old grease inside and replace with a fresh
grease (30 g). Use only Makita genuine hammer grease
(optional accessory). Filling with more than the specified
amount of grease (approx. 30 g) can cause faulty ham-
mering action or tool failure. Fill only with the specified
amount of grease.
Reinstall the crank cap and tighten hex bolts firmly with
the hex wrench.
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be per-
formed by Makita Authorized Service Centers, always
using Makita replacement parts.
