9
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection or
maintenance.
Lubrication
CAUTION:
• This servicing should be performed by Makita Autho-
rized or Factory Service Centers only.
This tool requires no hourly or daily lubrication because it
has a grease-packed lubrication system. Lubricate the
tool every time the carbon brushes are replaced.
Run the tool for several minutes to warm it up. Switch off
and unplug the tool.
Loosen the four screws and remove the handle. Note that
the top screws are different from other screws. (Fig. 24)
Disconnect the connector by pulling them. (Fig. 25)
Loosen the screws and remove the change lever.
Remove the crank cap cover. (Fig. 26)
Remove the control plate. (Except for model HR4011C.)
(Fig. 27)
Loosen the six screws with a screwdriver and remove the
crank cap. Rest the tool on the table with the bit end
pointing upwards. This will allow the old grease to collect
inside the crank housing. (Fig. 28)
Wipe out the old grease inside and replace with a fresh
grease (60 g). Use only Makita genuine hammer grease
(optional accessory). Filling with more than the specified
amount of grease (approx. 60 g) can cause faulty ham-
mering action or tool failure. Fill only with the specified
amount of grease.
Reinstall the crank cap and tighten with the screwdriver.
(Fig. 29)
Connect the connector and reinstall the handle. (Fig. 30)
CAUTION:
• Do not tighten the crank cap excessively. It is made of
resin and is subject to breakage.
• Be careful not to damage the connector or lead wires
especially when wiping out the old grease or installing
the handle.
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.
ACCESSORIES
CAUTION:
• These accessories or attachments are recommended
for use with your Makita tool specified in this manual.
The use of any other accessories or attachments might
present a risk of injury to persons. Only use accessory
or attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita service center.
• SDS-MAX Carbide tipped bit
• SDS-MAX bull point
• SDS-MAX cold chisel
• SDS-MAX scaling chisel
• SDS-MAX tile chisel
• SDS-MAX clay spade
•Hammer grease
• Bit grease
• Side handle
• Side grip
• Depth gauge
• Blow-out bulb
• Safety goggle
• Carrying case
