CB750FBB エンジンの調子が悪い原因？

This time, it's a vehicle that's not ridden very often, and the common scenario is that if you ride it more, it will run better. But if you push it too hard, could that cause an oil leak? Or could it be a carburetor overflow, which could cause other problems? I thought there might be another cause, so I looked into it, and it turns out that the part is discontinued! But Uotani was making it!