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ELECTRIC CHAIN SAW
OPERATING CHAIN SAW
Continued
TRIMMING A TREE (Pruning)
WARNING: Avoid kickback. Kickback can result in severe in- jury or death. See Kickback, pages 3 and 4, to avoid risk of kickback.
WARNING: Do not operate chain saw while
•in a tree
•on a ladder or any other un- stable surface
•in any awkward position
You may lose control of saw caus- ing severe injury.
WARNING: Do not cut limbs higher than your shoulders.
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 direc- tions 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.
CAUTION: Seek professional help if facing conditions beyond your ability.
2nd Cut - Pruning
Cut (to avoid
4th Cut - pinching) Final
Stub Cut
15 cm
5 to 10 cm
1st Cut - Pruning Undercut (to avoid splintering)
3rd Cut - Stub Undercut (to avoid splintering)
Figure 11 - Cutting A Limb
FELLING A TREE (Cutting Down a Tree)
WARNING
•Avoid kickback. Kickback can result in severe injury or death. See Kickback, pages 3 and 4, 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 per- form bucking and felling op- erations at the same time, pro- vide ample distance between operations. Provide distance of at least twice the height of tree being felled.
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.
CAUTION: Seek professional help if facing conditions beyond your ability.
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 fell- ing. 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.
Retreat
Path
Direction
of Fall
45°
Retreat | Tree |
Path |
|
Figure 12 - Retreat Path From Tree
10 | 102891 |
