Assessments - 1, GPA: 3
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Make sure your footing is firm. Keep feet apart.Divideyourweightevenlyonbothfeet. 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 14). 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. Direction of Fall Retreat Path 45° Tree Retreat Path Figure 14 - Retreat Path From Tree 12 ww.desatech.com CHAIN SAw INFORMATION Felling ProcedureA) 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 15). 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 15). 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 15). 3. Remove tree trunk wedge created by notching cuts. Direction of Fall Hinge 2" 2nd Cut Upper Notch Cut 3rd Cut - Felling Cut 2" 1st Cut Lower Notch Cut Figure 15 - 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 15, page 14). Keep felling cut parallel to lower notch cut. 2. Cut towards notch. 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: Do not cut all the way through tree. Leave about two inches of tree diameter uncut directly behind felling notch (seeFigure 15). This uncut portion actsas a hinge. The hinge helps keeptree from twisting and falling inwrong direction. wARNING: Be alert for fallingoverheadlimbs.watchyourfootingwhile exiting area. LimbinG A tree wARNING: Avoid kickback. Kickbackcanresultinsevereinjuryor death. See Kickback, page 5, to avoid risk of kickback. wARNING: when cutting limbthat is under tension, use extremecaution. Be alert for wood springing back. when wood tension isreleased, limb could spring backand strike operator causing severeinjury or death. Limbing is removing branches from a fallen tree. Make sure your footing is firm. Keep feetapart.Divideyourweightevenlyonboth feet. Do not remove larger limbs under tree that support log off ground. Remove each limb with one cut (see Figure 16). Clear cut limbs from work area often. This will help maintain a safe work area. Make sure you start your cut where limb will not pinch saw during cutting. To avoid pinching, start cut on freely hanging limbs from above limb. Start cut on limbs under tensionfromunderlimb.Ifpinchoccurs,turn saw off, lift limb, and remove saw. Figure 16 - Limbing A Tree ENGLISH 13 ww.desatech.com CHAIN SAw INFORMATION BUCKING A LOG wARNING: Avoid kickback. Kickbackcanresultinsevereinjuryor death. See Kickback, page 5, to avoid risk of kickback. wARNING: • If on slope, make sure log willnot roll down hill. Secure logbyusingwoodenstakes.Drivewoodenstakesintogroundondownhill side of log. Stand onuphillsideoflogwhilecutting. Log may roll after cutting. • Never try cutting throughtwo logs at same time. Thiscould increase the risk of kickback. • while cutting log, never holdlog with your hand, leg, orfoot. • whilecuttinglog,neverallowanother person to hold log. • Turn off and unplug sawbefore moving from oneplace to another. Bucking a log is cutting a log into sections. Makesureyourfootingisfirm.Keepfeetapart. Divideyourweightevenlyonbothfeet.When possible, raise log or section off ground. Do this by using limbs, logs, chocks, etc. Whencuttingthroughlog,maintaincontrolby reducing cutting pressure near end of cut. Do not relax your grip on chain saw handles. Do not let moving chain touch ground. Ground will dull moving chain. After cutting through log, release trigger to turn saw off before moving saw. Follow directions below ...
Este manual também é adequado para os modelos :Benzo e serras - 18 Volt Cordless BS188A, BPS188A, BS188A (4.23 mb)