Makita UC024G Manual De Instrucciones página 18

Limbing a tree
CAUTION:
Limbing may only be performed by
trained persons. A hazard is presented by the risk
of kickback.
Limbing is removing the branches from a fallen tree.
When limbing leave larger lower limbs to support the
log off the ground. Remove the small limbs in one cut as
illustrated. Branches under tension should be cut from
the bottom up to avoid binding the chain saw.
► Fig.26: 1. Limb cut
Cross-cutting/bucking a log
Cross-cutting/bucking is cutting a log into lengths. It
is important to make sure your footing is firm and your
weight is evenly distributed on both feet. When possi-
ble, the log should be raised and supported by the use
of limbs, logs or chocks. Follow the simple directions for
easy cutting.
When the log is supported along its entire length as
illustrated, it is cut from the top (overbuck).
► Fig.27
When the log is supported on one end, as illustrated,
cut 1/3 the diameter from the underside (underbuck).
Then make the finished cut by overbucking to meet the
first cut.
► Fig.28: 1. First cut 2. Second cut
When the log is supported on both ends, as illustrated,
cut 1/3 the diameter from the top (overbuck). Then
make the finished cut by underbucking the lower 2/3 to
meet the first cut.
► Fig.29: 1. First cut 2. Second cut
When cross-cutting/bucking on a slope always stand on
the uphill side of the log, as illustrated. When "cutting
through", to maintain complete control, release the
cutting pressure near the end of the cut without relaxing
your grip on the chain saw handles. Don't let the chain
contact the ground. After completing the cut, wait for
the saw chain to stop before you move the chain saw.
Always stop the motor before moving from tree to tree.
► Fig.30
Parallel-to-grain cut
CAUTION:
Parallel-to-grain cut may only be
performed by trained persons. The possibility of
kickback presents a risk of injury.
Perform the parallel-to-grain cut at as shallow an angle
as possible.
► Fig.31
Carrying tool
Before carrying the tool, always apply the chain brake
and remove the battery cartridge from the tool. Then
attach the guide bar cover. Also cover the battery car-
tridge with the battery cover.
► Fig.32: 1. Guide bar cover 2. Battery cover
MAINTENANCE
CAUTION:
Always be sure that the tool is
switched off and the battery cartridge is removed
before attempting to perform inspection or
maintenance.
CAUTION:
Always wear gloves when perform-
ing any inspection or maintenance.
NOTICE:
Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
To maintain product SAFETY and RELIABILITY,
repairs, any other maintenance or adjustment should
be performed by Makita Authorized or Factory Service
Centers, always using Makita replacement parts.
Sharpening the saw chain
Sharpen the saw chain when:
• Mealy sawdust is produced when damp wood is
cut;
• The chain penetrates the wood with difficulty, even
when heavy pressure is applied;
• The cutting edge is obviously damaged;
• The saw pulls to the left or right in the wood.
(caused by uneven sharpening of the saw chain or
damage to one side only)
Sharpen the saw chain frequently but a little each time.
Two or three strokes with a file are usually sufficient for
routine resharpening. When the saw chain has been
resharpened several times, have it sharpened in our
authorized service center.
Sharpening criteria:
WARNING:
the cutting edge and depth gauge increases the
risk of kickback.
► Fig.33: 1. Cutter length 2. Distance between cutting
edge and depth gauge 3. Minimum cutter
length (3 mm)
— All cutter length must be equal. Different cutter
lengths prevent the saw chain from running
smoothly and may cause the saw chain to break.
— Do not sharpen the chain when the cutter length
has reached 3 mm or shorter. The chain must be
replaced with new one.
— The chip thickness is determined by the distance
between the depth gauge (round nose) and the
cutting edge.
— The best cutting results are obtained with following
distance between cutting edge and depth gauge.
• Chain blade 80TXL : 0.65 mm
► Fig.34
— The sharpening angle of 30° must be the same on
all cutters. Different cutter angles cause the chain
to run roughly and unevenly, accelerate wear, and
lead to chain breaks.
— Use a suitable round file so that the proper sharp-
ening angle is kept against the teeth.
• Chain blade 80TXL : 55°
18 ENGLISH
An excessive distance between