28
OPERATION
■ After completing the cut, wait for the chain saw to come to a standstill before removing the chain
saw.
■ Always switch off the chain saw motor before moving from one tree to another.
■ You have better control when you saw with the bottom side of the guide bar (with a pulling
action) and not with the top side of the guide bar (with a pushing action).
■ The saw chain must not contact either the ground or another object during sawing through or
after sawing completion.
■ Make sure that the saw chain does not become jammed in the wood. Do not let the tree trunk
break or split off.
■ Consider also the precautions against kickback (see Safety Information section).
Bucking
(See Figs. 16-19)
This refers to sawing up a felled tree trunk into smaller sections.
Ensure that you are in a secure position and that your body weight is distributed evenly on both
feet. If possible, underpin and support the stem with branches, beams or wedges.
■ Ensure that the saw chain does not come in contact with the ground during sawing.
■ Make sure you have a secure stance and, in the case of sloping ground, stand above the log. To
maintain full control at the moment of “sawing through”, reduce the contact pressure at the end
of the cut, without releasing the firm grip on the chain saw handles. Once cutting is complete,
wait for the saw chain to come to a standstill before removing the chain saw from there. Always
switch off the chain saw before changing from tree to tree.
Log is lying on the ground (Fig. 16):
Saw through the log completely from above and ensure at the end of the cut not to contact the
ground.
If you can turn the tree trunk, saw two-thirds of the way through it. Then turn the trunk around and
saw the rest of the way through from above.
Log is supported at one end (Fig. 17):
Start sawing from the bottom and work your way up (with the upper edge of the bar) a third of the
way into the diameter of the trunk to prevent splitting. Then saw from the top downwards with the
lower edge of the bar towards the first cut to prevent the bar from becoming jammed in the wood.
Log is supported at both ends (Fig. 18):
Start from the top and work down (with the lower edge of the bar) to a third of the diameter of the
trunk. Then saw from underneath with the upper edge of the bar until the two cuts meet.
Sawing on a sawhorse (Fig. 19):
The best way to hold a log while bucking is to use a sawhorse. When this is not possible, the log
should be raised and supported by the limb stumps or by using supporting logs. Be sure the log
being cut is securely supported.
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