Functional Description - Makita UC120D Instruction Manual

out. The battery cartridge can explode in a fire.
9. Be careful not to drop or strike battery.
10. Do not use dropped or struck battery.
SAVE THESE INSTRUCTIONS.
Tips for maintaining maximum battery life
1. Charge the
completely discharged.
Always stop tool operation and charge the
battery cartridge when you notice less tool
power.
2. Never recharge a fully charged
cartridge.
Overcharging shortens the battery service life.
3. Charge the battery cartridge with room
temperature at 10 ﾟ C - 40 ﾟ C (50 ﾟ F - 104 ﾟ F).
Let a hot battery cartridge cool down before
charging it.
4. Charge the Nickel Metal Hydride battery
cartridge when you do not use it for more than
six months.

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
Fig.1
Always switch off the tool before insertion or
•
removal of the battery cartridge.
To remove the battery cartridge, withdraw it from
•
the tool while pressing the buttons on both sides 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 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.
Switch action
Fig.2
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.
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.
battery cartridge
ASSEMBLY
CAUTION:
Always be sure that the tool is switched off and the
•
battery cartridge is removed before carrying out
any work on the tool.
before
Installing or removing saw chain
CAUTION:
Always be sure that the tool is switched off and the
•
battery cartridge is removed before installing or
battery
removing the saw chain.
Always wear gloves when installing or removing the
•
saw chain.
Use only saw chain and guide bar with bar tip
•
designed for this chain saw (see the Extract from
the spare parts list).
In order to prevent kickback, do not remove the bar
•
tip or replace the guide bar with one without a bar
tip.
Loosen the screws with a screwdriver. Remove the
sprocket guard.
Fig.3
Loosen the hex socket head bolt with the hex wrench
provided. Remove the guide bar.
Fig.4
Fit the saw chain over the guide bar. Notice that the
cutters must be facing the revolving (arrow) direction.
Fig.5
Fit the saw chain over the sprocket. Install the guide bar
so that its concave portion will contact the saw chain
tension adjusting spring.
Fig.6
Tighten the bolt to secure the guide bar. Install the
sprocket guard and tighten the screws to secure it.
Adjusting saw chain tension
Fig.7
Fig.8
The saw chain may become loose after many hours of
use. From time to time check the saw chain tension
before use.
Grasp the saw chain in the middle of the guide bar and lift
up. The gap between the guide bar and the tie strap of
the saw chain should be approx. 2 - 3 mm. If the gap is
not approx. 2 - 3 mm, slightly loosen the hex socket head
bolt which secures the guide bar. The gap will be
automatically adjusted to approx. 2 -3 mm by the saw
chain tension adjusting spring.
Then tighten the hex socket head bolt securely after
making sure that gap is approx. 2 - 3 mm.
7