Limbing A Tree; Bucking A Tree; Maintenance - Oregon JW3800 Operación Manual

3. Making the cut
Clear the area surrounding the base of the tree
from all brush, tree limbs and other obstruction.
If the tree is less than 250mm then make the cut
through the trunk. If the tree is larger. Two cuts
are required, the undercut (notch cut) and the
back cut (the felling cut). See diagram below
The angled cut (notch cut) is made first as
shown above followed by the back cut (felling
cut).
The tree will start to fall onto the narrow section
of the notch while the wood at the thicker
section remains intact therefore the tree is
pulled forward. Making these cuts is a bit of
an art and requires some practice.
Once the tree starts to fall, turn off the saw and
take your chosen escape path so that you are
clear of the falling tree.
! Falling trees can sometimes bounce
backwards over the stump and injure an
unwary person. EXERCISE CAUTION.

Limbing a tree

! Never limb a tree when the branch is above
shoulder height as this can cause you to lose
control of the chainsaw.
Examine the tree
Evaluate a fallen tree to ensure that it is not
lodged onto another tree and potentially not
fully fallen to the ground. This is a potentially
dangerous situation and is best left to a
professional.
Check and ensure the following are clear –
! Are smaller trees trapped by the tree to be
limbed?
! Is the tree to be limbed totally and safely
laying on the floor?
! Is the tree to be limbed on level ground?
! Is there debris on the tree that could fall onto
you during limbing?
Once you have removed all potential obstacles
and sources of danger, stand uphill of the tree
to be limbed.
! If you stand downhill and free a limb, the tree
could potentially roll down onto you.
Stand firmly on the ground in a balanced
position that allows for full freedom of
movement. Ensure that you will not slip.
Start at the bottom of the tree and work your
way to the top removing limbs and debris on
both sides as you go. ALWAYS cut away from
yourself and beware of kickback.
Place cut limbs in a safe location away from your
limbing location.
Cutting the limbs off close to the trunk makes
the tree easier to roll once finished. Beware of
the trunk moving as you remove heavier limbs.

Bucking a tree

This is the process of cutting the felled tree into
useable lengths and can be done as you are
limbing the tree.
! If the tree is laying on the ground ensure
that you do not get the saw blade caught in the
earth or other debris.
Stand uphill of the tree and make sure you have
a strong, firm stance on the ground, be ready to
move quickly if the log rolls.
**A SAWBUCK OR SAWHORSE MAKES CUTTING
EASIER AND SAFER **

Maintenance

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