McCulloch is one of those brands that used to make professional grade saws, but became less popular as the Swedish and German saws gained in popularity. They got bought out and now it’s just a name. Those saws like you have are usually branded as Poulan or Craftsman in the US
Bar & chain looked to have a lot of wear left in them. The depth gauges maybe needed checking / adjusting. Ethanol in fuel makes some plastic cap threads swell. I thin down with rotory grinding tool, till screws easily.. Fuel line now, lucky if lasts 3years. Either swells & goes soft or hard, cracks. Suggest slacken the bar nuts before turning adjuster. Easy to strip threads. Useful saw, but often abused by inexperienced homeowners.
