Maintenance - Makita UC120D Betriebsanleitung

Installing or removing saw chain
CAUTION:
• Always be sure that the tool is switched off and the
battery 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. 3)
Loosen the 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.
Lubrication (Fig. 7)
CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before lubricating the
saw chain.
• Always use vegetable oil when pruning fruit trees.
Mineral oil may harm trees.
Lubricate the whole saw chain evenly before each
use. Also lubricate it whenever replacing a fully dis-
charged battery cartridge with a charged one.
Switch action (Fig. 8)
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. 9)
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.
8
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. 10 & 11)
When cutting thick branches, first make a shallow
undercut and then make the finish cut from the top.
(Fig. 12)
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. 13)
If you cannot cut the timber right through with a single
stroke:
– Apply light pressure to the handle and continue
sawing and
– draw the chain saw back a little; then
– apply the spike a little lower and
– finish the cut by raising the handle. (Fig. 14)
Adjusting saw chain tension (Fig. 15 & 16)
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 automatically adjusted to approx. 2 – 3 mm by
the saw chain tension adjusting spring. Then tighten
the bolt securely after making sure that gap is approx.
2 – 3 mm.

MAINTENANCE

CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before carrying out any
work on the tool.
• Always wear gloves when performing any inspec-
tion or maintenance.
• Please have your saw chain sharpened at a Makita
Authorized Service Center or replace with a new
one if your saw chain does not cut correctly.
Cleaning guide bar (Fig. 17)
Chips and sawdust will build up in the guide bar
groove, clogging it and impairing oil flow. Always
clean out the chips and sawdust when sharpening or
replacing the saw chain.
Storing tool
Clean the tool before storing. Remove any chips and
sawdust from the tool after removing the chain cover.
After cleaning the tool, run it under no load. Then
remove the battery cartridge from the tool and lubri-
cate the saw chain and guide bar.
To maintain product safety and reliability, repairs,
maintenance or adjustment should be carried out by a
Makita Authorized Service Center.