Functional Description; Operation; Maintenance; Optional Accessories - Makita HM1802 Instruction Manual

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 lever actuates properly and returns to the "OFF"
position when released.
To start the tool, simply squeeze the switch lever. Release
the switch lever to stop.
For model HM1812 only
NOTE:
• Blows at no load per minute becomes smaller than
those on load in order to reduce vibration under no load,
but this does not show trouble. Once operation starts
with a bit against concrete, blows per minute increase.
When temperature is low and there is less fluidity in
grease, the tool may not have this function even with
the motor rotating.
Indicator lamps (Fig. 2)
The green power-ON indicator lamp lights up when
the tool is plugged. The indicator lamp is lit but the tool
does not start even if the tool is switched on, the carbon
brushes may be worn out, or the controller, the motor or
the ON/OFF switch may be malfunction.
The red service indicator lamp flickers up when the
carbon brushes are nearly worn out to indicate that the
tool needs servicing. After some period of use, motor will
automatically be shut off.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
Installing soft grip (Fig. 3 & 4)
Soft grip is NOT installed before factory shipment.
Install soft grip securely.
Set the triangle alignment marks on the hammer body
and on the soft grip when installing the soft grip.
Installing or removing the bit (optional
accessory) (Fig. 5)
CAUTION:
• Always assure that the bit is securely retained by
attempting to pull the bit out of the tool holder after
installing the bit.
• Follow the below 2 installation methods in accordance
with the 2 different types of bits. If inappropriate
installation method is selected, the bit cannot be
secured.
This tool accepts bits either with or without a collar on
its shank.
To install the bit, follow either procedure (1) or (2)
described below.
(1) For bits with a collar (Fig. 6)
Pivot the tool retainer downward (approx. 60 degrees).
Insert the bit into the tool holder until it stops. Return the
tool retainer and secure the bit.
4
(2) For bits without a collar (Fig. 7)
Pivot the tool retainer upward (approx. 60 degrees).
Face the notched portion of the bit upward. Insert the bit
into the tool holder until it stops. Pivot the tool retainer
further until it stops at the tool holder.
To remove the bit, follow the installation procedure in
reverse.

OPERATION

Chipping/Scaling/Demolition (Fig. 8)
CAUTION:
• Keep well-balanced posture when holding the heavy
tool before / during / after operation to avoid personal
injuries.
• Secure debris in case of breaking it into smaller pieces.
• 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.
• Do not pull out the tool if stuck. Instead, break the work
around the bit tip.
• Be sure to place the tool on the stable floor or ground
after use.
Always use the soft grip (auxiliary handle) and firmly
hold the tool by both side grip and switch handle during
operations.

MAINTENANCE

CAUTION:
• Store the machine in horizontal position to avoid
possible grease leakage.
• Never use gasoline, benzine, thinner, alcohol or the
like. Discoloration, deformation or cracks may result.
To maintain product safety and reliability, repairs, any
maintenance or adjustment should be performed by
Makita Authorized Service Centers, always using Makita
replacement parts.

OPTIONAL 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 / bit grease
• Dust extractor attachment
NOTE:
• Some items in the list may be included in the tool
package as standard accessories. They may differ from
country to country.