Sharpening The Saw Chain - Makita BUC250 Manual De Instrucciones

006918
Cut a scarf: The scarf determines the direction in
which the tree will fall, and guides it. It is made on
the side towards which the tree is to fall. Cut the
scarf as close to the ground as possible. First make
the horizontal cut to a depth of 1/5 -1/3 of the trunk
diameter. Do not make the scarf too large. Then
make the diagonal cut.
Cut any corrections to the scarf across its entire
width.
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Make the back cut a little higher than the base cut
of the scarf. The back cut must be exactly
horizontal. Leave approximately 1/10 of the trunk
diameter between the back cut and the scarf.
The wood fibers in the uncut trunk portion act as a
hinge. Do not cut right through the fibers under any
circumstances, as the tree will otherwise fall
unchecked. Insert wedges into the back cut in time.
Only plastic or aluminum wedges may be used to
keep the back cut open. The use of iron wedges is
prohibited.
Stand to the side of the falling tree. Keep an area
clear to the rear of the falling tree up to an angle of
45 ° either side of the tree axis (refer to the " felling
area " figure). Pay attention to falling branches.
An escape path should be planned and cleared as
necessary before cuts are started. The escape path
should extend back and diagonally to the rear of the
expected line of fall as illustrated in figure.
1
2
3
2
009202
Carrying tool
011446
Always remove the battery cartridge from the tool and
overlap the guide bar with the scabbard before carrying
the tool. Also cover the battery cartridge with the 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.
Always wear
•
inspection or maintenance.
Never use gasoline, benzine, thinner, alcohol or the
•
like. Discoloration, deformation or cracks may
result.

Sharpening the saw chain

CAUTION:
Always remove the battery cartridge and wear
•
safety gloves when performing work on the saw
chain.
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14
1. Felling direction
2. Danger zone
3. Escape route
3
1. Scabbard (chain
cover)
1
2. Battery cartridge
2
gloves when performing any