Cutting Techniques; Pull-In; Pushback; Felling - Stihl 036 QS Instruction Manual

$ 3XOOLQ
Pull-in occurs when the chain on the
bottom of the bar is suddenly stopped
when it is pinched, caught or encounters
a foreign object in the wood.
The reaction of the chain pulls the saw
forward and may cause the operator to
lose control.
Pull-in frequently occurs when the
bumper spike of the saw is not held
securely against the tree or limb and
when the chain is not rotating at full
speed before it contacts the wood.
:DUQLQJ
Use extreme caution when cutting small
size brush and saplings which may easily
catch the chain and pull you off balance.
7R DYRLG SXOOLQ
1. Always start a cut with the chain
rotating at full speed and the bumper
spike in contact with the wood.
2. Pull-in may also be prevented by using
wedges to open the kerf or cut.
3XVKEDFN
Pushback occurs when the chain on the
top of the bar is suddenly stopped when
it is pinched, caught or encounters a
foreign object in the wood. The reaction
of the chain drives the saw straight back
toward the operator and may cause loss
of saw control. Pushback frequently
occurs when the top of the bar is used for
cutting.
7R DYRLG SXVKEDFN
1. Be alert to forces or situations that
may cause material to pinch the
chain on the top of the bar.
2. Do not cut more than one log at a time.
3. Do not twist the saw when withdraw-
ing the bar from a plunge cut or
underbuck cut because the chain can
pinch.
&XWWLQJ 7HFKQLTXHV
)HOOLQJ
Felling is cutting down a tree.
Before felling a tree, consider carefully all
conditions which may affect the direction
of fall, including:
The intended direction of the fall.
The natural lean of the tree.
Any unusually heavy limb structure.
Surrounding trees and obstacles.
The wind direction and speed.
:DUQLQJ
Always observe the general condition of
the tree. Inexperienced users should
never attempt to cut trees which are
decayed or rotted inside or which are
leaning or otherwise under tension.
There is an increased risk that such trees
could snap or split while being cut and
cause serious or fatal injury to the
operator or bystanders.
Also look for broken or dead branches
which could vibrate loose and fall on the
operator. When felling on a slope, the
operator should stand on the uphill side
if possible.