In the case of gas grills, put a visual on the cylinder, regulator, hoses, control knobs and burners, all are a must. If the parts are in question, many of these parts can be serviced or replaced. If the grill is inset into an outdoor kitchen or island, make sure the exterior ground vents are clear of any obstructions or debris. These are your gas safety outlets.
What kind of condition are the grates in? Do they have leftovers burnt in from BBQ’s of past? Can they be cleaned with some good old scrubbing? Or should they just be replaced? There are some great oil sprays in a can just made for outdoor grills. Keep in mind that you eat what you cook on or is it what you cook on, you eat. You get the idea.
Basic common sense should serve you well and for those lacking, refer to the owners manual. Never, never use your grill if you smell gas. Turn off the cylinder if safe to do so and let the air clear. Remember, there are service people available that are professionals in this field. My role of thumb is be cautious of gas technicians who do not have eye brows, think about it.
Safety first and have a great grilling season!
Biggie Tongs