What are the key safety precautions I must follow when using the GL350 trimmer?

Always wear eye protection, sturdy footwear, and long trousers, and never operate the trimmer near children, pets, or bystanders. Only use the trimmer in dry conditions and upright with the cutting line near the ground, and never touch the cutting line or moving parts until the motor has completely stopped after switching off. If the trimmer vibrates abnormally or strikes a foreign object, switch it off and unplug it immediately before inspecting for damage. (Pages 6, 7)