Chain Saw Information
Felling Procedure
A) Felling Notch
A properly placed felling notch will determine direction tree will fall. Place felling notch on side of tree in direction you want tree to fall (see Figure 12). Follow directions below to create a felling notch.
1.Make lower notch cut as close to ground as possible. Hold saw so guide bar is horizontal. Cut 1/3 the diameter of tree trunk (see Figure 12). Note: Always make this horizontal lower notch cut first. If you make this cut second, tree can pinch chain or guide bar.
2.Start upper notch cut the same distance above first cut as first cut is deep.
Example: If lower notch cut is eight inches deep, start upper notch cut eight inches above it. Cut downward at 45° angle. The upper notch cut should meet end of lower notch cut (see Figure 12).
3.Remove tree trunk wedge created by notching cuts.
|
| Direction of Fall |
3rd Cut - | Hinge |
|
Felling Cut | 2nd Cut - | |
|
| |
|
| Upper Notch |
|
| Cut |
2" |
|
|
|
| 1st Cut - |
|
| Lower Notch |
2" |
| Cut |
|
|
3.As felling cut nears hinge, tree should begin to fall. Note: If needed, drive wedges into felling cut to control direction of fall. If tree settles back and pinches chain, drive wedges into felling cut to remove saw. Only use wedges made of wood, plastic, or aluminum. Never use wedge made of steel. This could cause kickback and damage to chain.
4.When tree begins to fall, quickly
•remove saw from felling cut
•release trigger to turn saw off
•put saw down
•exit area using retreat path
WARNING: Be alert for falling over- head limbs. Watch your footing while exiting area.
Figure 12 - Felling A Tree
B) Felling Cut
1.Make felling cut two inches higher than lower notch cut and on opposite side of tree (see Figure 12). Keep felling cut parallel to lower notch cut.
2.Cut towards notch.
WARNING: Do not cut all the way through tree. Leave about two inches of tree diameter uncut directly behind felling notch (see Figure 12). This uncut portion acts as a hinge. The hinge helps keep tree from twisting and falling in wrong direction.
www.desatech.com | 14 |