Front Hand Guard - Makita BUC250 Instruction Manual

FUNCTIONAL DESCRIPTION
CAUTION:
Always be sure that the tool is switched off and the
•
battery cartridge is removed before adjusting or
checking function on the tool.
Installing or removing battery cartridge
CAUTION:
Hold the tool and the battery cartridge firmly
•
when installing or removing battery cartridge.
Failure to hold the tool and the battery cartridge
firmly may cause them to slip off your hands and
result in damage to the tool and battery cartridge
and a personal injury.
Fig.1
Always switch off the tool before installation or
•
removal of the battery cartridge.
To remove the battery cartridge, withdraw it from
•
the tool while sliding the button on the front of the
cartridge.
To insert the battery cartridge, align the tongue on
•
the battery cartridge with the groove in the housing
and slip it into place. Always insert it all the way
until it locks in place with a little click. If you can
see the red part on the upper side of the button, it
is not locked completely. Insert it fully until the red
part cannot be seen. If not, it may accidentally fall
out of the tool, causing injury to you or someone
around you.
Do not use force when inserting the battery
•
cartridge. If the cartridge does not slide in easily, it
is not being inserted correctly.
Battery protection system
The battery cartridge is equipped with the protection
system, which automatically cuts off the output power for
its long service life.
The tool may stop during operation when the tool and/or
battery are placed under the following situation. This is
caused by the activation of protection system and does
not show the tool trouble.
When the tool is overloaded:
•
At this time, release the switch trigger and
remove causes of overload and then pull the
switch trigger again to restart. When the tool
does not work even after pulling the switch
trigger, the battery power auto-stop is still at
work. Charge the battery cartridge before
use.
When the remaining battery capacity becomes low:
•
Recharge the battery cartridge.
Switch action
CAUTION:
Before inserting the battery cartridge into the tool,
•
always check to see that the switch trigger
actuates properly and returns to the "OFF" position
when released.
Fig.2
To prevent the switch trigger from being accidentally
pulled, a lock-off button is provided.
To start the tool, depress the lock-off button and pull the
switch trigger. Release the switch trigger to stop.
Checking the chain brake
NOTE:
If the chain saw fails to start, the chain brake must
•
be released. Pull the front hand guard backwards
firmly until you feel it engage.
Hold the chain saw with both hands when switching it on.
Hold the top handle with your right hand, the front handle
with your left. The bar and the chain must not be in
contact with any object.
First press the lock-off button, then the switch trigger.
The saw chain starts immediately.
Fig.3
Press the front hand guard forwards using the back of
your hand. The saw chain must come to an immediate
standstill.
CAUTION:
Should the saw chain not stop immediately when
•
this test is performed, the saw may not be used
under any circumstances. Consult a MAKITA
specialist repair shop.
Checking the run-down brake
Switch on the chain saw.
Release the switch trigger completely. The saw chain
must come to a standstill within one second.
CAUTION:
Should the saw chain not come to a stop within
•
one second when this test is performed, the saw
must not be used. Consult a MAKITA specialist
repair shop.
Adjusting the chain lubrication
Fig.4
You can adjust the oil pump feed rate with the adjusting
screw. The amount of oil can be adjusted using the
universal wrench.
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