Bucking Logs Under Stress; Overbucking; Underbucking; Limbing - Ryobi RY3818 Operator's Manual

BUCKING LOGS UNDER STRESS

See Figure 25.
Make the first bucking cut 1/3 of the way through
the log and finish with a 2/3 cut on the opposite
side. As you cut the log, it will tend to bend. The
saw can become pinched or hung in the log if you
make the first 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.

OVERBUCKING

See Figure 26.
Begin on the top side of the log with the bottom
of the saw against the log; exert light pressure
downward. Note that the saw will tend to pull
away from you.

UNDERBUCKING

See Figure 27.
Begin on the underside of the log with the top
of the saw against the log; exert light pressure
upward. During underbucking, the saw will tend
to push back at you. Be prepared for this reaction
and hold the saw firmly to maintain control.

LIMBING

See Figure 28.
WARNING:
Never climb into a tree to limb or prune. Do
not stand on ladders, platforms, a log, or in
any position which can cause you to lose your
balance or control of the saw, which could result
in death or other serious personal injury.
Limbing is removing branches from a fallen tree.
 Work slowly, keeping both hands on the chain
saw with a firm grip. Always make sure your
footing is secure and your weight is distributed
evenly on both feet.
 Leave the larger support limbs under the tree
to keep the tree off the ground while cutting.
 Limbs should be cut one at a time. Remove the
cut limbs from the work area often to help keep
the work area clean and safe.
OPERATION
Page 22 — English
LOG SUPPORTED AT ONE END
FINISHING CUT
1ST CUT 1/3 DIA.
LOG SUPPORTED AT BOTH ENDS
1ST CUT 1/3 DIA.
LOAD
FINISHING CUT
OVERBUCKING
UNDERBUCKING
LOAD
Fig. 25
Fig. 26
Fig. 27