ISA Certified Arborist Exam [isa]

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Rotational kickback is a primary hazard when operating a chainsaw. This violent, upward and backward motion of the saw is most likely to occur when which part of the guide bar makes contact with a solid object?

The bottom edge of the bar, used for a pulling chain. The upper quadrant of the guide bar's tip. The top edge of the bar near the powerhead. The body of the bar, when it gets pinched in a cut.

Correct Answer:

The upper quadrant of the guide bar's tip.

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