Bosch 06008B8001 Originalbetriebsanleitung Seite 23

OBJ_BUCH-3472-001.book Page 23 Thursday, December 21, 2017 4:11 PM
comes in contact with a log or wood, or when the chain
becomes jammed.
When kickback occurs, the chainsaw reacts unpredictably
and can cause heavy injuries to the operator or bystanders.
Particular attention must be given when sawing sidewards,
slanted or during length cuts, as the gripping teeth 8 usually
can not be applied.
To avoid kickback:
– Saw with the chain bar at a flat angle.
– Never work with a loose, widely stretched or heavily worn
out saw chain.
– Replace blunt chain as specified.
– Never saw above shoulder height.
– Never work with the tip of the chain.
– Always hold a chain saw firmly with both hands.
– Always use a Bosch approved low-kickback saw chain.
– Apply the metal gripping teeth 8 for leverage.
– Ensure correct chain tension.
General Behaviour (see figures E–H)
Always hold the chain saw firmly with both hands. Front
handle with the left hand and rear handle with the right hand.
Fully grip both handles with thumb and fingers at all times
during operation. Never operate chain saw using only one
hand.
Use the chain saw only with secure footing. Hold the chain
saw at the right-hand side of your body.
The chain must be running at full speed before it makes
contact with the wood. Use the gripping teeth 8 to support the
chain saw on the wood. Use the gripping teeth as a leverage
point while cutting.
Reset the gripping teeth at a lower point when sawing thicker
logs or tree trunks. For this, pull the chain saw slightly
backwards until the gripping teeth release, and reposition at
lower level to continue sawing. Do not remove the chain saw
completely out of the cut.
Do not force the saw chain while cutting, let the chain do the
work, using the gripping teeth 8 to apply minimal leverage
pressure.
Never operate the chain saw with arms fully extended. Do not
attempt to saw areas which are difficult to reach, or on a
ladder. Never saw above shoulder height.
Sawing is optimized when the chain speed remains steady
during cutting.
Beware when reaching the end of the cut. The weight of the
chain saw changes unexpectedly as it cuts free from the
wood. Danger of injury to the legs and feet.
Always remove the chain saw from a wood cut while the saw
chain is running.
Cutting Logs (see figures E–H)
When cutting logs, observe the following safety instructions:
Support logs so that the face sides at the cut, do not close in
against each other, which would result in the chain being
jammed.
Bosch Power Tools
Position and set short logs safely before sawing.
Saw only wood or wooden objects. When sawing, always take
care to avoid hitting stones, nails, etc., as these could be
thrown up, could cause damage to the chain, or could result in
serious injury to the operator or bystanders.
Keep a running chain saw clear of wire fencing or the ground.
Use of the saw to thin out branches or bushes is not approved.
Length cuts must be carried out with particular care, as
leverage with the gripping teeth 8 is not possible. Saw at a flat
angle to avoid kickback.
When working on a slope, operate above or to the side of the
trunk or laying tree.
Be careful not to trip over tree stumps, branches, roots, etc.
Cutting Wood under Tension (see figure H)
Be extremely careful when sawing wood, branches or
trees under tension. Leave saw jobs like these to trained
professionals. There is a high risk of accidents.
When sawing logs supported on both ends, start the cut from
above (Y) about one third of the diameter into the log and
then finish the cut at the same spot from below (Z), in order to
avoid splitting of the log or jamming of the saw. Avoid contact
of the saw chain with the ground.
When sawing logs supported on only one end, start the cut
from below (Y) about one third of the diameter into the log
and then finish the cut at the same spot from above (Z), in
order to avoid splitting of the log or jamming of the saw.
Cutting branches (see figure I)
 Always wear hard hat to protect head against falling
branches.
 A cut branch can lead to personal injury by falling on
you or springing back from the ground. Cut longer
branches in sections.
 Reduce the cutting force before the branch is
completely cut off. You can get injured, when losing
balance and control of the chain saw.
The chain must be running at full speed before it makes
contact with the wood. Use the tip protector to support when
undercutting.
Pruning straight through a tree branch from the top edge
down is appropriate for branches up to 5 cm in diameter.
Thicker branches should be pruned in three-steps, to prevent
damaging the tree. The tip protector is designed to support
undercutting branches.
Do not force the chain saw while cutting, let the chain do the
work.
Sawing is optimized when the chain speed remains steady
during cutting.
Limbing a Tree (see figure J)
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 in the
figure. Branches under tension should be cut from the bottom
up to avoid binding the chain saw.
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F 016 L81 719 | (21.12.17)