Makita HM1801 Manual

6
retainer shaft, insert the bit into the tool holder as
far as it will go. Then pivot the tool retainer further
downward toward the barrel to securely retain the
bit.
CAUTION:
• Always assure that the bit is securely retained by
attempting to pull the bit out of the tool holder after
completing the above procedure.
• The bit without a collar cannot be retained by the
method shown in Fig.(1).
To remove the bit, follow the installation procedure in
reverse.
OPERATION
Chipping/Scaling/Demolition
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.
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection
or maintenance.
• Never use gasoline, benzine, thinner, alcohol or
the like. Discoloration, deformation or cracks may
result.
Replacing carbon brushes
Fig.6
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.
Use a hex wrench to remove the motor housing cover.
Fig.7
Remove the cap rubber.
Fig.8
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.9
Lubrication
Fig.10
Fig.11
This tool requires no hourly or daily lubrication because
it has a grease-packed lubrication system. It should be
relubricated after every 6 months of operation. Send the
complete tool to Makita Authorized or Factory Service
Center for this lubrication service. However, if
circumstances require that you should lubricate it by
yourself, proceed as follows.
First, switch off and unplug the tool.
Remove the cap using a lock nut wrench 20 or hex
wrench 8, then replenish with 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 hammering
action or tool failure. Fill only with the specified amount
of grease.
Fig.12
Reinstall the cap and secure with the wrench.
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be
performed 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.
• Bull point
• Cold chisel
• Scaling chisel
• Clay spade
• Rammer
• Safety goggles
• Hammer grease
• Hex wrench
• Lock nut wrench

Makita HM1801 Specifications

General

Product color	Black, Blue
Input power	2000 W
Impact energy (max)	63 J
Vibration level (chiseling)	16 m/s²
Toolholder	- mm
Impact rate	1100 bpm

Weight and Dimensions

Depth	148 mm
Width	824 mm
Height	624 mm
Weight	30000 g