Overheat Protection; Overdischarge Protection - Makita DUC357 Instruction Manual

Overheat protection

When the tool or battery is overheated, the tool stops automatically. In
this case, let the tool and battery cool before turning the tool on again.
NOTE: In high temperature environment, the overheat
protection likely to work and the tool stops automatically.

Overdischarge protection

When the battery capacity is not enough, the tool stops automatically.
In this case, remove the battery from the tool and charge the battery.
Protections against other causes
Protection system is also designed for other causes that could
damage the tool and allows the tool to stop automatically.
Take all the following steps to clear the causes, when the tool
has been brought to a temporary halt or stop in operation.
1. Turn the tool off, and then turn it on again to restart.
2. Charge the battery(ies) or replace it/them with
recharged battery(ies).
3. Let the machine and battery(ies) cool down.
If no improvement can be found by restoring protection
system, then contact your local Makita Service Center.
NOTICE:
If the tool stops due to a cause
not described above, refer to the section for
troubleshooting.
Switch action
WARNING:
For your safety, this tool is equipped
with the lock-off button which prevents the tool from
unintended starting. Never use the tool if it starts when
you pull the switch trigger without pressing the lock-
off button. Ask your local Makita Service Center for repairs.
WARNING:
Never disable the lock function or
tape down the lock-off button.
CAUTION:
Before installing the battery cartridge into
the tool, always check to see that the switch trigger actuates
properly and returns to the "OFF" position when released.
NOTICE:
Do not pull the switch trigger forcibly with-
out pressing the lock-off button. The switch may break.
Fig.5
► 1 . Lock-off button 2. Switch trigger
To prevent the switch trigger from being accidentally pulled, a
lock-off button is provided. To start the tool, press the lock-off but-
ton and pull the switch trigger. Release the switch trigger to stop.
1
2
10 ENGLISH
Checking the chain brake
CAUTION:
Hold the chain saw with both
hands when switching it on. Hold the rear handle
with your right hand, the front handle with your
left. The bar and the chain must not be in contact
with any object.
CAUTION:
Should the saw chain not stop
immediately when this test is performed, the
saw may not be used under any circumstances.
Consult our authorized service center.
1. Press the lock-off button, then pull the switch
trigger. The saw chain starts immediately.
2.
Push the front hand guard forwards with the back
of your hand. Make sure that the chain saw comes to an
immediate standstill.
2
2
1
Fig.6
► 1 . Front hand guard 2. Unlocked position 3. Locked
position
Checking the run-down brake
CAUTION:
If the saw chain does not stop
within one second in this test, stop using the
chain saw and consult our authorized service
center.
Run the chain saw then release the switch trigger com-
pletely. The saw chain must come to a standstill within
one second.
3
1
3