Starting fluid got a bad name in the earlier years because it washed out the lubricant from the cylinder walls which caused problems. They have since put a additive in starting fluid to prevent that. If you get a good brain name it doesn't hurt a thing but help start your equipment. All you should need is a small spray pass the air cleaner. I sure would use starting fluid over carburetor cleaner because then you are washing out the lubricant from the cylinder walls.