Adjusting your bike’s chain won’t make it any faster, but it’s critical if you want your chain to last. It’s fast, easy, and next to checking your own tire pressure it’s one of the first things any home mechanic should learn. Too tight is as bad as too loose, but it’ll only take minutes to get it right. You should check and adjust your chain every 500 miles (805 km), and more often for a dirt bike. It’s also a great time to look for kinks or rust, and to give your chain a quick cleaning and lubrication, too.