26
AFTER SALES SUPPORT
1300 855 831
MODEL: MFH3300-4P PRODUCT CODE: 47629 02/2017
AUS
Working instructions
MFH3300-4P
Always observe the condition of the tree.
Look for rot and decay in the roots and branches. If they are rotten inside, they can
break off and fall down unexpectedly during cutting.
Keep a look out for partly broken and dead branches which may come loose owing
to the vibration and which may fall on you. For very thick or heavy branches you first
make a small incision below the branch before you work from the top down to avoid
chipping.
Basic cutting technique
Heavy branches break off easily when sawing. They tear long strips of bark away
from the trunk, which damages the tree sustainably. The following section technique
can significantly reduce this risk:
•
Saw the first branch about 10cm from the trunk.
•
At about 15 cm from the trunk, start another cut from the top.
•
Finally, remove the remaining snag with a clean cut from the top along the trunk.
•
To keep damage to the tree as minimal as possible, we recommend sealing the
damaged site with graftng wax.
Hazards by reactive forces
Reactive forces occur during operation of the saw chain. The forces which are
applied to the wood are against the operator. They occur when the moving chain
is pinched, or comes into contact with with a fixed object such as a branch. These
forces can lead to a loss of control and injury.
Understanding the origin of these forces can help you to avoid the risk and loss of
control. The design of this machine makes the return effects not so noticeable as
with traditional chainsaws.
Always still keep a firm grip and a good level to maintain control of the tool in doubt.
The most common effects are:
•
setback
•
recoil
•
retreat
Kickback
The setback can occur when the moving saw chain meets at the upper quarter of
the guide rail on a solid object or is pinched.
The cutting force exerted on the chain from the saw, a rotational force in the opposite
direction to the chain travel. This leads to an upward movement of the guide rail.
