McCulloch MAC 742 Chainsaw User Manual


 
12
Overcuttingbeginsonthetopsideofthelog
with thesaw against the lo g. When overcut-
ting use light downward pressure.
Overcutting
Undercutting
Undercuttinginvolvescuttingontheunder-
sideofthelogwithtopofsawagainstthelog.
When undercutting use light upward pres-
sure. Hold saw firmly and maintain control.
The saw will tend to push back toward you.
WARNING: Never turn saw upside
down to undercut. The saw cannot be con-
trolled in this position.
First c ut on pressure side of log
Second cut
First c ut on pressure side of log
Second cut
BUCKING WITHOUT A
SUPPORT
S Overcut through 1/3 of the di ame ter of the
log.
S Roll the log over and finish with a second
overcut.
S Give special attention tologs under strain
to prevent the saw from pinching. Make
the first cuton the pressureside torelieve
the stress on the log.
BUCKING USING A L OG OR SUP-
PORT STAND
S Remember your first cut is always on the
pressure side of the log.
S Your first cut should extend
1/3 of the
diameter of the log.
S Finish with your second cut.
1
st
Cut
2
nd
Cut
Usingalogforsupport
2
nd
Cut
1
st
Cut
1
st
Cut
2
nd
Cut
Using a support stan d
1
st
Cut
2
nd
Cut
LIMBING AND PRUNING
WARNING: Be alert for and guard
against kickback. Do not allow the moving
chain tocontact any other branched orobjects
at the nose of the guide bar when limbing or
pruning. Allowing such contact can result in
serious injury .
WARNING: Neverclimbintoatreeto
limb or prune. Do not stand on ladders, plat-
forms,alog,or inany positionwhich cancause
you to lose your balance or controlof thesaw .
IMPORTANT POINTS
S Watch out for springpoles. Use extreme
cautionwhencuttingsmall size l imbs. Slen-
dermaterial may catchthe sawchainandbe
whipped toward you or pull you off balance.
S Be alert for springback. Watch out for
branches thatare bentor und erpressure.
Avoid being struck by the branch or the
saw when the tension inthewood fibers is
released.
S Keep a clear work area. Frequently clear
branches out of the way to avoid tripping
over them.
LIMBING
S Alwayslimbatreeafteritis cutdown. Only
then can limbingbe donesafely andprop-
erly.
S Leave the larger limbs underneath the
felledtreeto support the treeas youwork.
S Start atbaseof the felledtreeandwork to-
ward the top, cutting branches and lim bs.
Remove small limbs with one cut.
S Keep the tree between you and the chain
as much as possible.
S Remove larger, supporting branches with
thecuttingtechniquesdescribedinBUCK-
ING WITHOUT A SUPPORT.
S Always use an overcut to cut small and
freely hanging limbs. Undercutting could
cause limbs to fall and pinch saw .
PRUNING
WARNING: Limit pruning to limbs
shoulder height or below. Do not cut if
branches arehigher than yourshoulder .Get
a professional to do the job.