OPERATION
en
Logs Under Stress (Fig.
Make the first bucking cut (F) 1/3 of the way through the log and finish with a 2/3 cut (G) on the opposite side. 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 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.
Types of Cutting Used
Overbucking (Fig. 68)
Begin on the top side of the log with the bottom of the saw against the log; exert light pressure downward.
Underbucking (Fig. 69)
Begin on the under side 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.
WARNING: Never turn saw upside down to undercut. The saw cannot be controlled in this position. Always make your first cut on the compression side of the log. The compression side of the log is where the pressure of the log’s weight is concentrated.
Limbing and Pruning
WARNING: Be alert for and guard against kickback. Do not allow the moving chain to contact any other branches or objects at the nose of the guide bar when limbing or pruning. Allowing such contact can result in serious injury.
•Work slowly, keeping both hands on the saw with a firm and proper grip. Maintain secure footing and balance (Fig. 70).
•Keep the tree between you and the chain while limbing (A, Fig. 71). Cut from the side of the tree opposite the branch you are cutting.
•Do not cut from a ladder, this is extremely dangerous (Fig. 70). Leave this operation for professionals.
•Do not cut above chest height as a saw held higher is difficult to control against kickback.
•Be alert for springback. Watch out for branches that are bent or under pressure. Avoid being struck by the branch or the saw when the tension in the wood fibers is released.
•Keep a clear work area. Frequently clear branches out of the way to avoid tripping over them.
WARNING: Never climb into a tree to limb
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