Maintenance - Makita HM1500 Instruction Manual

OPERATING INSTRUCTIONS
Installing or removing bull point or other bits
(cold chisel, etc.) (Fig. 1 & 2)
Important:
Always be sure that the tool is switched off and
unplugged before installing or removing the bit.
Pull out and turn the tool retainer so that the boss on the
tool retainer faces in the direction of the arrow. Insert the
bit into the tool holder as far as it will go.
Then pull out and turn the tool retainer 180 degrees to
secure the bit.
To remove the bit, follow the installation procedures in
reverse.
Side handle (auxiliary handle) (Fig. 3)
The side handle can be secured in any position. Loosen
the nut and swing the side handle to the desired position.
Then tighten the nut firmly to secure the side handle. If
the set bolt turns together with the nut when you turn the
nut, set the set bolt so that the projecting portion of the
side handle is fitted into the notch in the bolt head.
Switch action (Fig. 4)
CAUTION:
• Before plugging in the tool, always check to see that
the switch trigger actuates properly and returns to the
"OFF" position when released.
• Do not tape, tie or otherwise secure the trigger in the
"ON" position.
To start the tool, simply pull the trigger. Release the trig-
ger to stop.
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 carrying out any work on the tool.
Replacement of carbon brushes (Fig. 5 & 6)
Whenever carbon brushes must be replaced, they cut out
the tool automatically. When this occurs, remove the
holder cap plates and then replace both carbon brushes
at the same time. Use only identical carbon brushes.
Lubrication (Fig. 7 & 8)
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.
First, switch off and unplug the tool. Remove the plate 50
using a screwdriver, then replenish with fresh grease
(60 g). Use only Makita genuine grease (optional acces-
sory). 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. Reinstall plate 50 and secure with the screws.
To maintain product safety and reliability, repairs, mainte-
nance or adjustment should be carried out by a Makita
Authorized Service Center.
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