Some call the reciprocating saw the “gateway tool” to serious DIY repair and remodeling. But what happens when your reciprocating saw needs some DIY itself? What do you do when it fails to start, or the blade is stuck or it isn’t reciprocating properly? We’ll help you out. We’ve got symptoms and causes, instructional videos and step-by-step instructions, and even the right replacement part, so you can get back to the task at hand.