My gz250 has been lacking power when going from mid to full throttle. I looked around and found cracks on the coupling between carburetor and engine intake. This is probably the problem. However, I dont know what the part name or number is. I looked on the service manual but couldn't find anything. Below is a picture of it. If you know, Please share the part name, number or a web-link.
Thank you very much!
I also found this unplugged hose. is it supposed to be like this?