Dialog 1

Mr. Ardi: Good morning, Mr. Dio.

Mr. Dio: Morning, Mr. Ardi.

Mr. Ardi: Wow! It is a nice classic motorcycle. You must take good care of it. 

Mr. Dio: Thank you. Unfortunately, it is broken now. I can't start the engine.

Mr. Ardi: Have you checked the fuel?

Mr. Dio: Yes, I have. The fuel is more than enough to make it run. 

Mr. Ardi: Let me check it for you then.

Mr. Dio: All right. Thank you.

Mr. Ardi: Um... I think I know the problem. You forget to open the fuel line to its carburetor. 

Mr. Dio: Is that so simple? Hats off to you, Mr. Ardi. You can figure out the problem in seconds.

Mr. Ardi: It's not a big deal. You just have to remember to open the fuel line next time.

Mr. Dio: Yes, I will for sure. Thanks.

What does Mr. Ardi ask Mr. Dio to check?