Which action is not part of the standard four steps for portable fire extinguisher use?

Prepare for the Automotive Service Technician Period 1 exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Shutting off the extinguisher is not part of the standard four steps for using a portable fire extinguisher. The four steps, often remembered as PASS, are: Pull the pin to break the tamper seal and enable operation; Aim the nozzle at the base of the fire; Squeeze the handle to release the extinguishing agent; Sweep the nozzle from side to side to cover the area. There isn't a shut-off control to operate during the discharge—the flow ends when you release the handle or the extinguisher is empty. The other actions are all essential parts of effectively using the extinguisher.