18 – English
On largediameter trees, stop theback cut
beforeitisdeepenoughforthetreetoeither
fallor settle back on thestump. Theninsert
softwoodenorplasticwedgesintothecutso
they do not touch the chain. The wedges can
bedrivenin,littlebylittle,tohelpjackthetree
over.See Figure 16.
Astreestartstofall,stopthechainsawandput
it down immediately. Retreat along the cleared
path,butwatchtheactionincasesomething
fallsyourway.Bealertforoverheadlimbsor
branches that may fall and watch your footing.
WARNING:
Nevercutthroughtothenotchwhenmakinga
backcut. The hinge controls the fall of the tree,
this is the section of wood between the notch
and backcut.
BUCKING
See Figures 17 - 20.
Bucking is the term used for cutting a fallen tree to
the desired log length.
Alwaysmakesureyourfootingissecureandyour
weightisdistributedevenlyonbothfeet.
Cut only one log at a time.
Supportsmalllogsonasawhorseoranotherlog
while bucking.
OPERATION
Keepaclearcuttingarea.Makesurethatnoob-
jects can contact the guide bar nose and chain
during cutting, this can cause kickback.
Whenbuckingonaslope,alwaysstandonthe
uphillsideofthelog.Tomaintaincompletecontrol
of the chain saw when cutting through the log,
releasethecuttingpressureneartheendofthe
cutwithoutrelaxingyourgriponthechainsaw
handles. Do not let the chain contact the ground.
Aftercompletingthecut,waitforthesawchain
tostopbeforeyoumovethechainsaw.Always
stopthemotorbeforemovingfromtreetotree.
Sometimesitisimpossibletoavoidpinching(with
juststandard cuttingtechniques) or difficultto
predictwhichwayalogwillsettlewhencut.To
avoidpinchingwhilecutting,rotateormovethe
logsothatthepinchiseliminated.
BUCKING LOGS UNDER STRESS
See Figures 19 - 20.
Whenthelogissupportedalongitsentirelength,it
shouldbecutfromthetoporoverbucking.
Whenthelogissupportedononeend,cut1/3the
diameter from the underside or underbucking. Then
makethefinishingcutbyoverbuckingtomeetthe
first cut.
LOAD
1ST CUT
1/3 DIA
LOG SUPPORTED AT ONE END:
LOG SUPPORTED AT BOTH ENDS:
FINISHING CUT
LOAD
1ST CUT 1/3 DIA
FINISHING CUT
FIG. 19
KICKBACK
FIG. 17
FIG. 18