Plunge Cutting; Felling Normal, Small Diameter Tree; Selecting The Appropriate Felling Cut - Stihl MSA 160 C Instruction Manual

11 Operating the Saw
► If the wood is sound and long-fibered: Observe the
following points when making sapwood cuts:
– The cuts must be the same at both sides.
– The cuts must be at same height as bottom of felling
notch.
– The width of the cuts is 1/10 of the trunk diameter.
The trunk does not splinter when the tree falls.

11.4.5 Plunge cutting

Plunge cutting is a technique required for felling.
1.
3.
2.
► Begin cut with the lower portion of the guide bar nose –
with chain running at full speed.
► Cut until depth of kerf is twice the width of the guide bar.
► Swing the saw into plunge-cutting position.
► Perform the plunge cut

11.4.6 Selecting the Appropriate Felling Cut

The choice of appropriate felling cut depends on the
following conditions:
– The natural inclination of the tree
– The tree's branch formation
– Damage to the tree
– The tree's state of health
– If there is snow on the tree: the snow load
– The direction of slope
0458-701-9921-E
– Wind direction and speed
– Nearby trees, if any
There are different features of these conditions. Only two
features are described in this Instruction Manual.
1
1 Normal tree
A normal tree is vertical and has an even crown.
2 Leaner
A leaner stands at an angle and the crown faces in the
direction of fall.

11.4.7 Felling normal, small diameter tree

A normal tree is felled with a felling cut and stabilizing strap.
This felling cut must be performed if the tree diameter is less
than the guide bar's length.
► Shout a warning.
English
2
1.
2.
67