Cleaning And Maintenance - Scheppach CSP2540 Originalbetriebsanleitung

Using the chainsaw in the tree
An analysis of accidents with these saws during tree
service operations shows the primary cause as be-
ing inappropriate one-handed use of the saw. In the
vast majority of accidents, operators fail to adopt a
secure work position which allows them to hold both
handles of the saw. This results in an increased
risk of injury due to:
• not having a firm grip on the saw if it kicks back;
• a lack of control of the saw such that it is more li-
able to contact climbing lines and operators body
(particularly the left hand and arm)
• losing control from insecure work position result-
ing in contact with the saw (unexpected move-
ment during operation of the saw)
Securing the work position for two-handed use
To allow the operator to hold the saw with both
hands, they should as general rule, aim for secure
work position where they are operating the saw at:
• hip level when cutting horizontal sections;
• solar plexus level when cutting vertical sections.
Where the operator is working close into vertical
stems with a low lateral forces on their work posi-
tion, then a good footing may be all that is needed to
maintain a secure work position. However as opera-
tors move away from the stem, they will need to take
steps to remove or counteract the increasing later-
al forces by, for example, a re-direct of the main line
via a supplementary anchor point or using an adjust-
able strop direct from the harness to a supplementa-
ry anchor point (Fig.O).
Gaining a good footing at the working position can
be assisted by use of a temporary foot stirrup creat-
ed from an endless sling (Fig.P).
Starting the saw in the tree
When starting the saw in the tree, the operator
should:
a) apply the chain brake before starting;
b) hold saw on either the left or right of the body
when starting:
• on the left side hold the saw with either the left
hand on the front handle or the right hand on the
rear handle and thrust the saw away from the
body while holding the pull starter cord in the oth-
er hand;
• on the right side, hold the saw with the right hand
on either handle and thrust the saw away from
the body while holding the pull starter cord in the
left hand.
The chain brake should always be engaged before
lowering a running saw onto its strop.
Operators should always check the saw has suffi-
cient fuel before undertaking critical cuts.
One-hand use of the chainsaw
Operators should not use tree service chainsaws
onehanded in place of unstable work positioning or
in preference to a handsaw when cutting small diam-
eter wood at the branch tips.
Tree service chainsaws should only be used one-
handed where:
• the operator cannot gain a work position enabling
two-handed use; and
• they need to support their working position with
one hand; and
44 І 76
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• the saw is being used at full stretch, at right an-
gles to and out of line with the operator's body
(Fig.Q)
Operators should never:
• cut with the kickback zone at the tip of the chain-
saw guide bar
• 'hold and cut' sections
• attempt to catch falling sections.
Freeing a trapped saw
If the saw should become trapped during cutting,
operators should:
• switch off the saw and attach it securely to the
tree inboard (i.e. towards the trunk side) of the cut
or to a separate tool line;
• pull the saw from the kerf whilst lifting the branch
as necessary;
• if necessary, use a handsaw or second chain saw
to release the trapped saw by cutting a minimum
of 30 cm away from the trapped saw.
Whether a handsaw or a chainsaw is used to free a
stuck saw, the release cuts should always be out-
board (toward the tips of the branch), in order to pre-
vent the saw being taken with the section and further
complicating the situation.
LIMBING
a) Always start from the larger diameter and move
towards the tip to cut off limbs and any secondary
branches.
b) Always find the safest and most stable position
before accelerating the chainsaw. If necessary,
keep your balance by resting your knee on the
trunk itself.
c) Keep the chainsaw on the trunk so as not to get
too tired, turning it onto the left- or right-hand side
depending on the position of the branch to cut
(Fig. L).
d) In the case of branches under tension, find a safe
position to protect yourself if they whip back. Al-
ways start the cut from the opposite side to the
bend.
e) When lopping large diameter branches make use
of the bumper spike.
WARNING - Do not use the upper edge of the
tip of the guide bar to cross-cut; otherwise you
might risk a kickback.

10. Cleaning and maintenance

Breaking in a new saw chain (1)
A new chain and bar will need chain readjust-
ment after as few as 5 cuts. This is normal dur-
ing the breaking period, and the interval be-
tween future adjustments will begin to lengthen
quickly.
Sharpening the saw chain
CAUTION!: Before doing any work on the guide
bar or chain, always switch off the engine and
pull the plug cap off the spark plug (see „Re-
placing the spark plug"). Always wear protective
gloves!