After the problem of no sparks was discovered, I focused on getting a CDI. First of all, there are no genuine second-hand parts at all. I don't really understand Chinese CDIs. Just when I was at a loss, I got the same blue CDI! It wasn't cheap, but if it didn't produce sparks, it would be pretty bad. By the way, I read an online article that said that the KSR's CDI can actually be used. I didn't have the courage to try it, but maybe I'll use this if it dies again. The reviews also said something similar. It seems likely. I replaced it immediately and kicked it. Ohhh!!! I could see the sparks even in the dark. It seems like I got lucky with the CDI blow. Thank goodness. I put in the spark plugs, and kicked it in the hope that the engine would start. ...Yeah, it didn't start. Maybe it's the carb? Well, it's that air cleaner. So I ordered an air cleaner. I measured the outer diameter of the suction side and it was φ32. Cheaply made!! Well, I guess that's about what you'd expect from a mainland air cleaner. There was vinyl on the metal part at the top, a little extra care. Thanks. I installed it. The previous rusty air cleaner was interfering, and the air cleaner itself was crooked, but this one seems fine. By the way, I heard that the carburetor had been overhauled, and it was clean when I opened it. It should probably be fine. Another thing to be careful about is compression. There are no photos, but it's about 600kPa. I thought it was low, but it seems like that's about right. So I think it's probably fine. There's no reason it won't start again! So, kick it. The popping sound was different from before. This thing is moving After a few kicks, it finally started. I did it! It's back! I had heard it worked. Well, it was a private sale, so I was prepared for it. But then, a new problem arose. When I turned the accelerator to accelerate, the RPMs rose to about 7000, and never came back down. It feels like the throttle isn't working properly. I have to do something about it. To be continued