Final answer:
The acceptable method for starting a chainsaw when working from a bucket is the modified leg clamp technique. It allows for a stable position while minimizing risk during start-up.
Step-by-step explanation:
The question pertains to the proper technique for starting a chainsaw when working from an elevated position, such as a bucket truck. Among the options listed, the modified leg clamp method (b) is considered to be an acceptable technique. This method involves placing the chainsaw between the legs just above the knees, with the saw body on one side and the bar on the other. The operator then securely clamps the saw between their legs while pulling the starter rope with one hand. This allows for a stable position and minimizes the risk of losing control of the saw during start-up.
Ground start (a) and drop start (c) methods are generally not recommended due to safety concerns, especially when elevated off the ground. The push/pull technique (d) is not specified here, but it would not be appropriate from a bucket due to the instability that it might cause. Safety must always be prioritized when operating dangerous equipment like chainsaws.