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TYPES OF CUTTING
iiii, .....
A. BASIC CUTTING TECHNIQUIE
1, IMPORTANT POINTS. -
a, Cut wood only. Do not cut memllplastics,
r_asonry,non_ buildingrr_t_aJs, etc.DOHot
useyoursawtopryorshoveawayI_bs, toolsor
othe_o_ec_s.
b, Stop thesaw if the chain strikes a foreign
ob]ect. Inspecttheunit and repairor replace
partsasnecessary.
c, Keep _hechain out of dirt a_d Sand.Even a
smaiamountofdirtwit!quicklyduffachainand
., thus increaselhePOSsibi_it_ofidckback.
' A KICKBACK WARNING ...... --
Klckbackcanoccurwhenthemovtngchaincontactsan
oh]eclat theupperpon]on otthetlp olthegu_debar or
whenthe woodclosesln and plnche_ithesew¢hel. In
thecut. Contactat the upperportloo of the tfp Ofthe
guidebar cancausethachalntodtglntothe objectand
stop the_chaln|oran Instant, The resultIs a lightning
faM,reversemacttonwhlehklcksthegu[deberupand
beck toward the operator.If thesaw chain Ispinched
along the top of the guide bar_the guide bar can be
drtvenrapldlybackfowardtheoperator.Eltheroffh_se
reactions can cause loss of saw control which can
resultin seriouspersonal Injury.
2, UNDERSTAND REACTIVE FORCES
Ptnch-KlckbaokandPull.Inoccm whenthe chmln
Issuddenlystopl_,d bybetngpinched, caught,or
bycontacting a/o_elgn object In theWood.This
resultsinareverse]o_thechainforceusedtocutwood
andcsuses tits _w to_:_e iniheOppositedfrecLtorzof
chainrelatton.Eilher_actlon _n i'esgltin!assofcon-
trd and,oosstbleserlousperson=_]uty.
a Pinch*Kickback
-occumwhentha chain,ontopofth ebarissuddenly
stoppedwhenfhetopoft_ barisusedforcurling,
- rapidlydrives Ihe sawstmght badxtOwardthe
operaz_ " '
a Pull-tn_ " " " "
- can occurwhen thechainbn th_ bottOmof the
bat_ssaddenS/stopped, --
- putls lhesaWrapidly fon,,'ard.
B. TREE FELLINGTECHIM'IGUES
1, PLAN YOUR'SAWING OPERATION
CALVE*
FULLY IN ADVANCE
a. Cleartheworkatea, Youneedacleararaaall
around the tree whereyou can have secure
tooting. •
b. Study Ihe naturafconditions thatcan cause
thetreeto falltn apart{culardlrection:
_:I 1he WlND_rect_onandspeed.
TheLEAN of_hetree,
3,) WEIGHTEOwithBRANCHESononeside,
4,} SurroundingTREESemdO9STACLES.
c, Look for decay and rot. Ifthe tr_n_ isrotted.
itcouldsnap_ndf_!_towardtheopera,or.
3. PROCEDURE'! '_''' '."_, : " '
Pra_€_ng afe*a'_ k_ u_ngee_hn_
que_gelt_ _,bf_r_yo.r saw_toreyo_ begina
¢
a.Acceleratethi_ en_ne to fid_throttle _ust_fore.
anteflngtheCutbySqueezingthe throt_et_gger,
Figure16. : i : " : ..
c. Keepthe e_j_e atlutffhmtlle teeentire time you
a_ecutting,; _ r ' ''."
d,Allow the chain tocut lot you exert only light
downwardpressure,tfyouforcethecut,damageto
theb+m_chaJn_eri_ihocan resulL i "
e. Release thethmtt!e tdgge_ as soonas thecutIs
completed, at]o_,vlrigthebngtnetoldle: llyou runIha
Sexy=lullth_Ot_avfitl_utact_tilngload,onne,_.ossary
wearcanoccurIot_ chain,bar,andang!ne,
f. Donot patpressumanthesewatthe endoflhecut
toavoidlosingcontK_whenthecutiscomplete.
g. Sloptheeng_e before_ttlngt hes_v downafter
cutting. ; ::
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