Working Techniques - Stihl MSE 250 C Instruction Manual

English
3.5 Pull-in (A)
Pull-in occurs when the chain on the bottom of
the bar is suddenly pinched, caught or encoun‐
ters a foreign object in the wood. The reaction of
the chain pulls the saw forward – to reduce this
risk, always engage the spiked bumper securely
in the tree or limb.
3.6 Pushback (B)
Pushback occurs when the chain on the top of
the bar is suddenly pinched, caught or encoun‐
ters a foreign object in the wood. The reaction of
the chain drives the saw straight back toward the
operator – to avoid this risk:
– Be alert to situations that may cause the top of
the guide bar to be pinched
– Do not twist the guide bar in the cut
3.7 Exercise extreme caution
– with leaners
– with trees that have fallen unfavorably
between other trees and are under strain
– when working in blowdown areas.
In these cases, do not use a chain saw – use a
hoist, winch or drag line instead.
Pull out exposed and cleared logs. Select clear
area for cutting.
Deadwood (dry, decayed or rotted wood) repre‐
sents a considerable risk that is difficult to
assess. Identifying the extent of the dangers is
8
complicated, if not impossible. Use aids such as
a cable winch or tractor in such cases.
When felling in the vicinity of roads, railways,
power lines, etc., take extra precautions. If nec‐
essary, inform the police, utility company or rail‐
way authority.
4

Working Techniques

Only specially trained persons may perform cut‐
ting and felling operations and all other associ‐
A
ated work (plunge cutting, limbing, etc.). To
reduce the risk of accidents and injury, do not
attempt felling or limbing if you are not an experi‐
enced chainsaw user.
Gasoline chain saws are more suitable than
electric saws for felling and limbing. The freedom
of movement necessary for this work is restricted
by the connecting cord.
Your electric chain saw is unsuitable for cutting
in blowdown areas and must not be used for
such work.
However, if a tree is to be felled and limbed with
an electric saw against this recommendation, it is
essential to observe country-specific regulations
on felling techniques.
4.1 Sawing
Work calmly and carefully – in daylight conditions
B
and only when visibility is good. Ensure you do
not endanger others – stay alert at all times.
It is advisable for first-time users to practice cut‐
ting logs on a sawbuck – see "Sawing thin
wood".
Use the shortest possible guide bar: The chain,
guide bar and chain sprocket must match each
other and your saw.
Position the saw so that your body is clear of the
cutting attachment.
Always pull the saw out of the cut with the chain
running.
4 Working Techniques
0458-764-0121-B