18
OPERATION (Cont.)
log. Give special attention to logs under stress to prevent the guide bar and chain
from pinching.
1. When the log is supported on one end (Fig. 34): First, cut from the bottom
(underbuck) 1/3 of the way through the log to avoid splintering. Second, cut from
2. When the log is supported on both ends (Fig. 35): First, overbuck 1/3 of the way
avoid pinching.
Bucking Fully Supported Logs
When the log is supported along the entire length, cut from the top (overbuck),
being careful to avoid cutting into the ground (Fig. 36).
Bucking on a Slope
When bucking on a slope, always stand on the uphill side of the log (Fig. 37).
Bucking with a Wedge
If the wood diameter is large enough to insert a soft wooden or plastic bucking
wedge without touching the chain, one should be used to hold the cut open to
prevent pinching. (Fig. 38)
PRUNING
Pruning is the process of trimming limbs from a live tree (Fig. 39).
Fig. 35
Fig. 38
Fig. 41
Fig. 36
Fig. 39
Fig. 42
Fig. 34
Fig. 37
Fig. 40
