9
9
102514
OPERATING CHAIN SAW
Continued
TRIMMING A TREE (Pruning)
Trimming a tree is the process of cutting limbs from a living
tree. Make sure your footing is firm. Keep feet apart. Divide
your weight evenly on both feet. Follow directions below to
trim a tree.
1. Make first cut 15 centimeters from tree trunk on underside
of limb. Use top of guide bar to make this cut. Cut 1/3
through diameter of limb (see Figure 11).
2. Move five to ten centimeters farther out on limb. Make
second cut from above limb. Continue cut until you cut
limb off.
3. Make third cut as close to tree trunk as possible on
underside of limb stub. Use top of guide bar to make this
cut. Cut 1/3 through diameter of stub.
4. Make fourth cut directly above third cut. Cut down to meet
third cut. This will remove limb stub.
!
WARNING ICON
G 001
WARNING
Do not cut limbs higher than your shoulders.
3rd Cut - Stub Undercut
(to avoid splintering)
5 to 10 cm
1st Cut - Pruning Undercut
(to avoid splintering)
15
cm
4th Cut - Final
Stub Cut
2nd Cut - Pruning Cut
(to avoid pinching)
Figure 11 - Cutting A Limb
!
WARNING ICON
G 001
CAUTION
Seek professional help if facing conditions
beyond your ability.
Direction of Fall
Retreat
Path
45
°
Retreat
Path
Tree
Figure 12 - Retreat Path From Tree
Continued
Felling is the process of cutting down a tree. Make sure your
footing is firm. Keep feet apart. Divide your weight evenly on
both feet. Follow directions below to fell a tree.
Before Felling a Tree
1. Before felling, inspect tree. Make sure there are no dead
limbs or branches that may fall on you. Study natural lean
of tree, location of larger branches, and wind direction.
This will help you judge which way tree will fall.
2. Clear work area around tree.
3. Plan and clear a retreat path before felling. Make retreat
path opposite to planned direction of fall of tree and at 45
°
angle (see Figure 12).
4. Remove dirt, stones, loose bark, nails, staples, and wire
from tree where you will make felling cuts.
5. Stay on uphill side when felling tree. Tree could roll or
slide downhill after falling.
FELLING A TREE (Cutting Down a Tree)
!
WARNING ICON
G 001
WARNING
Do not operate chain saw while
• in a tree
• on a ladder or any other unstable surface
• in any awkward position
You may lose control of saw causing severe injury.
!
WARNING ICON
G 001
WARNING
Avoid kickback. Kickback can result in severe
injury or death. See
Kickback, page 3 to avoid
risk of kickback.
!
WARNING ICON
G 001
CAUTION
Seek professional help if facing conditions
beyond your ability.
!
WARNING ICON
G 001
WARNING
When felling a tree, be aware of your
surroundings. Do not endanger any person,
strike utility lines, or cause property damage. If
tree strikes utility lines, contact utility company
at once.
!
WARNING ICON
G 001
WARNING
• Avoid kickback. Kickback can result in severe
injury or death. See
Kickback, page 3 to avoid
risk of kickback.
• Do not fell a tree without ample skill or expert help.
• Keep children, animals, and bystanders away
from area when felling a tree.
• If two or more persons perform bucking and
felling operations at the same time, provide
ample distance between operations. Provide
distance of at least twice the height of tree
being felled.
