The hand drill is too long, how to change the head and machine?

Step 1: Disconnect the power of the hand drill and unplug the power cord of the hand drill from the socket.

Step 2: Put on gloves with both hands, hold the hand electric drill with one hand, and hold the gourd mouth of the hand electric drill with the other hand, and rotate hard to expose the hole for installing the electric drill. If there is a circle of teeth at the front end of the hand electric drill, loosen the hole where the electric drill is installed with a special key.

Step 3: Take out the drill bit to be installed, put it on the hole exposed at the front end of the hand drill, and rotate it clockwise by hand to clamp the drill bit.

Step 4, adjust the depth position of the stuck drill bit into the hole and lock it clockwise with a special key.

Step 5, plug in the power cord plug of the hand electric drill and idle for 2 seconds to observe whether the drill bit of the hand electric drill is firmly installed.