Hitachi CS33ET Instruction Manual page 10

English j
CHAIN CATCHER
The chain catcher is located on the power head just below the
chain to further prevent the possibility of a broken chain striking the
chainsaw user.
/._, WARNING!
Do not stand in-line with chain when cutting.
BASICTECHNIQUES FOR MAKING FELLING, MMBING AND
BUCKING CUTS
The intention of the following information is to provide you with the
general introduction to wood cutting techniques.
/_\ WARNING!
This information does not cover all specific situations, which
may depend on differences in terrain, vegetation, kind of wood,
form and size of trees, etc. Consult your servicing dealer,
forestry agent or local forestry schools for advice on
specific woodeutting problems in your area,This will make your
work more efficient and safer.
/I._ WARNING!
Avoid cutting Jn adverse weather conditions, such as dense
fog, heavy rain, bitter cold, high winds, etc.
Adverse weather is often tiring to work Jn and creates
potentially dangerous conditions such as slippery ground.
High winds may force the tree to fall in an unexpected direction
causing property damage or personal injury.
CAUTION!
Never use a chainsaw to pry or for any purpose for which it is not
intended.
/g._ WARNING!
Avoid stumbling on obstacles such as stumps, roots, rocks,
branches and fallen trees. Watch out for holes and ditches. Be
extremely cautious when working on slopes or uneven ground.
Shut off the saw when moving from one work place to another.
Always cut at wide open throttle. A slow moving chain can
easily catch and force the saw to jerk.
Never use the saw with only one hand.
You cannot control the saw properly and you may lose control
and injure yourself severely.
Keep the saw body close to your body to improve control and
reduce strain.
When cutting with the bottom part of the chain the reactive
force will pull the saw away from you towards the wood you
are cutting.
The saw will control the feeding speed and sawdust will be
directed towards you. (Fig. 16)
Fig. 16
When cutting with the upper part of the chain the reactive force
will push the saw towards you and away from the wood you are
cutting. (Fig. 17)
Fig. 17
/t\ WARNING!
There is a risk of kickback if the saw is pushed far enough so
that you begin to cut with the nose of the bar.
The safest cutting method is to cut with the bottom part of the
chain. Sawing with the upper part makes it much more difficult
to control the saw and increases the risk of kickback.
NOTE!
Always keep the spiked bumper face to a tree, because the chain
may suddenly be drawn into a tree.
FELLING
Felling is more than cutting down atree.You must also bring it
down as near to an intended place as possible without damaging
the tree or anything else.
Before felling a tree, carefully consider all conditions which may
effect the intended direction, such as:
Angle of the tree. Shape of the crown. Snow load on the crown.
Wind conditions. Obstacles within tree range (e.g., other trees,
power lines, roads, buildings, etc.).
/!\WARNING!
Always observe the general conditions of the tree. Look for
decay and rot in the trunk which will make it more likely to snap
and start to fall before you expect it.
Look for dry branches, which may break and hit you when you
are working,
Always keep animals and people at least twice the tree length
away while felEng, Clear away shrubs and branches from
around the tree.
Prepare a path of retreat away from the felling direction.
BASIC RULES FOR FELMNGTREES
Normally the felling consists of two main cutting operations,
notching and making the felling cut.Start making the upper notch
cut on the side of the tree facing the feeling direction. Look through
the kerf as you saw the lower cut so you do not saw too deep into
the trunk.The notch should be deep enough to create a hinge of
sufficient width and strength. The notch opening should be wide
enough to direct the fall of the tree as long as possible. Saw the
felling cut from the other side of the tree between one and two
inches 1.2~2.0in (3._5cm) above the edge of the notch. (Fig. 18)
23
23. Felling direction
24.45°minium notck opening
25. Hinge
26. Felling cut
Fig. 18