The saw blade is easily removable and interchangeable.
Step1: Removing the blade
Hold the blade with gloves and a towel.
Hit the handle on hard surface such as wood until it becomes loose enough to remove the blade with your hands.
Remove the blade with your hands.
Step2: Attaching the new blade
Attach the hook on the blade to the metal fitting.
Hold the blade with a glove and towel with the teeth facing down. Hit the handle on a hard surface such as wood until it is fixed into place.