Maintenance - Makita UC120D Instruction Manual

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
undercut 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 splin-
ter. (Fig. 12)
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. 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 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. 16)
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.
ACCESSORIES
CAUTION:
• These accessories or attachments are recom-
mended for use with your Makita tool specified in
this manual. The use of any other accessories or
attachments might present a risk of injury to per-
sons. Only use accessory or attachment for its
stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita service cen-
ter.
• Hex wrench
• Scabbard
• Round file
• Chain oil
• Various type of Makita genuine batteries and charg-
ers
9