Types Of Cutting; A, Basic Cutting Technique; Tree Fel|Ing Techniques - Craftsman 358.356280 Important Manual

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TYPES OF CUTTING
A. BASIC CUTTING TECHNIQUE
1. IMPORTANT POINTS.
a. Cut wood only. Do not cut meta!, plastk_s,
rnasorm/, n on-woodbuilding matenals,et¢.Donot
useyour saw_opryor shove awaylimbs, rootsor
otherobjects.
b. Stop the saw if the chain strikes a foreign
object. Inspect ",heunit and repair or replace
parts as necessary.
c. Keep the Chain OUt of dirt and sand.Even a
smaitamount ofdirtwill quicklydull a chainand
thus, increasethe possibilityof kickback.
KICKBACK WARNING
Kickback can occur when the moving chain contactsan
ob]ectat tlt e-upper portion of the tip or the guide baror
when _hewood closes in and pinches the sawchain in
the cut.Contact at the upper portion of the tip of the
guide bar claShcause t he chain to dig into the object and
stop the chain fora_ instant. The result is a lightning
fast, reverse reaction which kicks the guide bar up and
back toward the operator. If the saw chain is pinched
along the top of the guide bar, the guide bar can be
driven rapidly back toward the operator. Either of these
reactions can cause loss of saw control whichcan
result in serious injury.
2. UNDERSTAND REACTIVE FORCES
Pincb-Kickbackand Pul_-In occur when the chain
•is suddenly stopped by being pinched, caught, or
by contacting a foreign object in the wood, This
r_..sults i n a reversalofthe chain forceused to cutwood
at_l causesthe saw _omove in theopposite directionof
chain rotati0n.Eitherreactioncan resu{tin lossofc0n-
tmt and Doss_teserious personalinjury.
Pinch-KiCkback
--o_curswhenthe chain, on topof thebarissuddenty
stopped when the top of the baris usedforcut_ng.
r_dty dd._ the =_.aw strai_, back toward the
operator.
• P_Jli_ln--
-.can occur when the chain on the bottom of the
bar is suddenly stopped.
--pulls the saw rapidly forward.
3_
PROCEDURE ,
P_ce cuttinga few smaillogsusingthek_lowingt_hni-
queto getthe 'Teer'of usingyoursawbeforeyou begina
major sawing operation.
_L Accelerate the engine to full throttle just before
entering the cut by squeezingthe throttletrigger.
b. Begin cutting with the spur against the wood.
Figure16.
c. Keep the engine at full throttle the entire time you
are cutting.
d. Allow the chain to cut for you; exert only light
downward pressuP_ ff yoUforce the cut, damageto
the bar,chain, or enginecan result.
e. Release the throttle trigger as soon as the cut is
completed, allowingthe engineto idfe.Ifyou runthe
saw at fullthrottle withouta cuffingload,unneoessaty
wear can occurto the chain, bar,and engine.
f. Do not put pressure onthemat theend ofthecut
to avoidlosing controlwhen tl-_cut iscomplete.
g: Stop the engine before setting the saw down after
cutting.
= =,lll=l
BEGIN CUTTING WITH
THE SPURAGAINST
THE LOG
Figure 16-
TREE FELLING TECHNIQUES
1- PLAN YOUR SAWING OPERATION CARE-
FULLY IN ADVANCE
a. C_s._ _.e work area, You need a clear area at_
around the tree where you can have secure
footing.
b. Study the natural conditions that ca n cause
the tree to fall in a particular direction:
2.) TheLEAN ofthetree,
.3.} WEIGHTED with BRANCHES on one sfde.
4,} Surrounding TREES and OBSTACLES,
c. Look for decay and rot, If the trunk is rotted,
it coutdsnap and fall toward the operator.
• i =u.=l i i . J= j == i
d. Check for broken or dead branches which
could fall on yo'0while cutting.
e. Maim sure there isenough room for thetres to
fall Ma_r_n adis_eof_'_ _ee _-f_m
the nearest person or_her objects.Engine noise
can drow_ out awam_ng carl
f. Remove dirt, stones, loose bark, trolls,.
staples, and wire from the tree where cuts
g. Plan to stand on the uphill side when cut.
ttng on a siope.
h. Plan a clear retreat path to the rear and
diagonal tothe Ilne0f falLF_gure 17.