Ryobi OCS1825 Original Instructions Manual page 13

fi rst, followed by the vertical cut. Remove the resulting
loose section from the work area. Follow the correct tree
felling procedure as staged in Felling Trees after you have
removed the large buttress roots.
BUCKING
See Fig.17-20.
Bucking is the term used for cutting a fallen tree to the
desired log length.
■ Always make sure your footing is secure and your
weight is distributed evenly on both feet.
■ Cut only one log at a time.
■ Support small logs on a saw horse or another log while
bucking.
■ Keep a clear cutting area. Make sure that no objects
can contact the guide bar nose and chain during cutting,
this can cause kickback. Refer to Kickback section in
this manual.
■ When bucking on a slope, always stand on the uphill
side of the log. To maintain complete control of the
chainsaw when cutting through the log, release the
cutting pressure near the end of the cut without relaxing
your grip on the chainsaw handles. Do not let the chain
contact the ground. After completing the cut, wait for
the saw chain to stop before you move the chainsaw.
Always stop the motor before moving from tree to tree.
BUCKING LOGS UNDER STRESS
See Fig.19-20.
Fig 16
When the log is supported along its entire length, it should
be cut from the top or overbucking.
When the log is supported on one end, cut 1/3 the diameter
from the underside or underbucking. Then make the
fi nishing cut by overbucking to meet the fi rst cut.
As the log is being cut, it will tend to bend. The saw can
become pinched or hung in the log if you make the fi rst cut
deeper than 1/3 of the diameter of the log.
Give special attention to logs under stress to prevent the
bar and chain from pinching.
When bucking on a slope, always stand on the uphill side
of the log as shown in fi gure 18. When "cutting through,"
to maintain complete control of the chainsaw, release the
cutting pressure near the end of the cut without relaxing
your grip on the chainsaw handles. Do not let the chain
contact the ground. After completing the cut, wait for the
saw chain to stop before you move the chainsaw. Always
stop the motor before moving from tree to tree.
Fig 17
Fig 18
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