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BASIC WORKING TECHNIQUE
This section deals with the basic working technique when handling
the machine. The information given here does not replace the
extensive training and experience of a specialist.
Avoid any work for which you are not adequately qualified!
Imprudent handling of the machine may result in extremely
serious to fatal injuries!
Sawing technique
Pull stroke sawing (fig. H)
With this technique the underside of the saw rail saws from top to
bottom.
The saw chain pushes the machine forward away from the user. The
front edge of the machine forms a support which absorbs the forces
which occur when sawing on the tree trunk.
In pull stroke sawing the user has much more control over the
machine and can better avoid kickbacks. Therefore this sawing
technique should be used preferably.
Push stroke sawing (fig. I)
With this technique the upper side of the saw rail saws from bottom
to top.
The saw chain pushes the machine backwards towards the user.
If the saw rail jams, the machine may be thrown back towards the
user with great force.
If the user does not use his physical strength to compensate for the
force of the saw chain pushing backwards, there is a risk that only
the tip of the saw rail will make contact with the wood and cause a
kickback.
Felling a tree (fig. J + K)
Before starting felling work, ensure that:
-
there are no unauthorised persons and no animals within the fall
area (A) of the tree.
-
there is an obstacle-free escape route for all those involved.
People withdraw (B) at an angle opposite the direction of fall.
-
the area around the trunk is free of obstacles (risk of tripping!).
-
the next workplace is at least two and a half tree lengths away.
Before felling the tree, check the direction in which the tree will fall
and ensure that there are neither objects nor persons or animals
within a distance of 2½ tree lengths.
A tree is felled in two stages:
•
Notch the trunk by approx. one third of its diameter on the side of
the direction of the fall (1).
•
On the opposite side make the felling cut (2) which must be
slightly higher than the notch (approx. 3–5 cm).
Never saw the tree trunk all the way through. The area (C,
Fig. K) is used as a "hinge" and provides a defined
direction of fall.
When felling, stand only at the side of the tree to be felled!
There is a risk of life-threatening injuries!
Trunks lying flat on the ground
•
Cut halfway into the trunk, then turn around and saw through
from the opposite side.
When sawing through the trunk, ensure that the saw rail
does not touch the ground!
Supported trunks (fig. L)
We recommend supporting trunks, which are to be sawn through,
on sawhorses. If this is not possible, the trunk should be raised and
supported with the aid of the supporting branches or via support
blocks.
•
In area A first cut approx. one third of the trunk diameter from top
to bottom, then complete the cut from bottom to top.
•
In area B first cut approx. one third of the trunk diameter from
bottom to top, then cut through from the top.
Do not saw trunks which are under tension! Splintering
wood or ajammed saw rail may result inextremely serious
injuries!
Removing branches
•
Always work on the side opposite the branch in question.
•
Start at the bottom of the trunk and work upwards.
•
Always guide the saw from top to bottom through the wood.
•
When limbing trunks lying flat on the ground, first always saw off
the branches pointing upwards. Do not cut through supporting
branches until the trunk has been sawn into lengths.
Branches which are supported or under tension may
wedge the saw chain in the wood!
MAINTENANCE AND CLEANING
To protect against injury before all work on the appliance:
- Switch OFF the engine.
- Wait until all rotating parts have come to a standstill.
- Remove the spark-plug terminal.
- Leave the motor to cool down (approx. 30 minutes).
Wear protective gloves!
Perform only the maintenance work described here
yourself. All other work, in particular motor maintenance
and repairs, must be performed by a trained specialist.
Improper work may damage the machine and also result in
injuries.
Overview of cleaning and maintenance
After using the machine
•
Clean the appliance.
•
Clean the air filter.
Depending on the application conditions
•
Regularly retension the saw chain
•
Clean the oil guide groove in the saw rail.
•
Regrind the saw chain.
•
Check the saw chain oil level, top up if required.
Cleaning
Do not spray the machine with water.
Clean the appliance after every use. Failure to clean
the appliance can damage the materials and cause
malfunctions.
Cleaning the appliance
•
Keep the ventilation slits clean and dust-free.
•
Clean the appliance with a damp cloth and a soft brush.
ENGLISH
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