3 Mechanical Timber Harvesting Handbook
Important Safety Information
Minimizing the Risk of a Chain Shot Event
To minimize your risk of a chain shot event:
• You should follow the recommendations of your equipment
manufacturer and those contained in this handbook.
• Your machine should be equipped with appropriate window
enclosures, chain catchers, chain shot guards, and snow
holes (shielded or closed) near the cutting system on the
saw box.
Never use saw chain that has:
• Broken, cracked, or damaged components.
• Excessive saw chain stretch.
• Loose rivet joints (if the rivet rotates, the joints are too loose).
Operator, Ground Personnel, and Bystander Safety
• Never engage in a cut with yourself, ground personnel,
or bystanders in the Shot Cone Zone (see pages 1 for
complete illustration).
• Always cut as close to the ground as possible to reduce the
distance that any potential ejected pieces could travel.
Guards and Shields
• Equipment should be equipped with appropriate guards,
shields, and window enclosures to minimize the exposure of
the operator, ground personnel, and bystanders to the cutting
plane and Shot Cone Zone of the cutting system.
• Ground personnel and bystanders should comply with
the setback requirement defined by your equipment
manufacturer (at least 230 feet or 70 meters).
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