Makita UC120D Instruction Manual page 7

11. Before making a cut, remove dirt, stones, loose
bark, nails, staples and wire from the tree.
12. Secure the workpiece so that it will not move
suddenly during operation. Be careful of cut-off
pieces. They may hit operator.
13. To prevent the saw chain from being pinched in
the cut, support the workpiece near the cut
using blocks or the like.
SAVE THESE INSTRUCTIONS.
OPERATING INSTRUCTIONS
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 car-
tridge.
• 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.
Installing or removing saw chain
CAUTION:
• Always be sure that the tool is switched off and the bat-
tery cartridge is removed before installing or removing
the saw chain.
• Always wear gloves when installing or removing the
saw chain.
Loosen the screws with a screwdriver. Remove the
sprocket guard. (Fig. 2)
Loosen the bolt with the hex wrench provided. Remove
the guide bar. (Fig. 3)
Fit the saw chain over the guide bar. Notice that the cut-
ters must be facing the revolving (arrow) direction.
(Fig. 4)
Fit the saw chain over the sprocket. Install the guide bar
so that its concave portion will contact the saw chain ten-
sion adjusting spring. (Fig. 5)
Tighten the bolt to secure the guide bar. Install the
sprocket guard and tighten the screws to secure it.
Lubrication (Fig. 6)
CAUTION:
• Always be sure that the tool is switched off and the bat-
tery cartridge is removed before lubricating the saw
chain.
• Always use vegetable oil when pruning fruit trees. Min-
eral oil may harm trees.
Lubricate the whole saw chain evenly before each use.
Also lubricate it whenever replacing a fully discharged
battery cartridge with a charged one.
Switch action (Fig. 7)
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.
Carrying tool (Fig. 8)
Always remove the battery cartridge from the tool and
cover the guide bar with the scabbard before carrying the
tool. Also cover the battery cartridge with the battery
cover.
Pruning trees
CAUTION:
• Keep all parts of the body away from the saw chain
when the motor is operating.
• Hold the chain saw firmly with both hands when the
motor is running.
• Do not overreach. Keep proper footing and balance at
all times.
Bring the tip guard/front face of housing into contact with
the branch to be cut before switching on. Cutting without
bringing the tip guard/front face of housing into contact
with the branch may cause the guide bar to wobble,
resulting in injury to operator. (Fig. 9 & 10)
When cutting thick branches, first make a shallow under-
cut and then make the finish cut from the top. (Fig. 11)
If you try to cut off thick branches from the bottom, the
branch may close in and pinch the saw chain in the cut. If
you try to cut off thick branches from the top without a
shallow undercut, the branch may splinter. (Fig. 12)
If you cannot cut the timber right through with a single
stroke:
– Apply light pressure to the handle and continue saw-
ing and
– draw the chain saw back a little; then
– apply the spike a little lower and
– finish the cut by raising the handle. (Fig. 13)
Adjusting saw chain tension (Fig. 14 & 15)
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 bolt
which secures the guide bar. The gap will be automati-
cally adjusted to approx. 2 – 3 mm by the saw chain ten-
sion adjusting spring. Then tighten the bolt securely after
making sure that gap is approx. 2 – 3 mm.
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