 Chain saws are equipped with a safety feature known as the chain brake. The chain brake should always be engaged when taking more than two steps when working with the chain saw. It's always a good idea to always keep two hands on the saw. So to properly engage the chain brake, we have a couple techniques that you can use. The first is called the wrist roll, where you simply roll your wrist forward and engage the chain brake. Now when you're disengaging the chain brake, you do not want to remove a hand and pull it back. Instead, wrap the thumb around the top handle, extend four fingers forward, and pull the chain brake back. You have both hands still on the saw. Another technique to engage the chain brake is known as the leg roll. You simply keep your wrist in this position and roll the saw back.