Just don’t let loose. This phrase could easily be used to describe maintaining the screw connections on your engine. According to the maintenance plan, you should check the screws on your 1B engine every 250 operating hours and tighten them as necessary. Fred will show you which screws you actually have to check and what pitfalls to avoid. If you’re thinking, “Checking screws? Who needs that?” let’s just say that a broken screw in the wrong place can have nasty consequences for your engine and your machine. So take a look, and don’t let loose with the maintenance of your 1B.