c. Check each tree for dead or broken tree limbs when climbing. Remove unsound tree
limbs during the climb.
d. Lower cut-off tree limbs with a rope. Falling tree limbs can cause injury and property
e. Trees greater than 7.5 meters (25 feet) tall and 200 millimeters (8 inches) in trunk
diameter should have ropes attached before felling. Assign workers to the ropes to guide the tree
as it falls.
7.13.6 Power Trimming Equipment
Chain-saw operators will follow the manufacturer's operating instructions
and will carefully inspect and maintain their saws prior to use. Chain
saws are very dangerous. Observation of the following operation and
maintenance safety precautions will assist in the avoidance of injury.
188.8.131.52 Operating Power Trimming Equipment. Operate only if authorized and
observe these operator precautions. Before starting to cut, the operator should clear away brush
or other material that might interfere with cutting operations.
a. Operators will wear personal protective equipment as prescribed by the designated
authority. Eye, ear, hand, foot (safety shoes) and leg protection are required as a minimum unless
specifically waved by the designated authority.
b. The idle speed will be adjusted so that the chain does not move when the engine is
c. The operator should be sure of his/her footing before beginning cutting operations.
d. The operator should hold the saw with both hands during all cutting operations. Grip
the chain saw properly. Place one hand on the top handle with the thumb curled under the handle.
Place the other hand on the control handle.
e. The operator should stand to the side of the chain saw, not directly behind it, to keep
the body away from the path of the guide bar if kickback occurs. Be alert to conditions that can
cause the chain saw to kick back. Kickback occurs when a solid object (such as a tree limb above
the cutting area) contacts the chain at the guide bar nose. This causes the saw to be thrown
violently up and back toward the operator.