"Si tú le hablas americano"
This translates to English as:
"If you speak to him in American"
The "le" refers to a male person, and "americano" in this context refers to the language.
Here are some alternative interpretations depending on the context:
* "If you speak to him in English" (assuming the speaker is using "americano" to mean "English")
* "If you talk to him in an American way" (implying a specific style of speech)
It is important to consider the context of the conversation to understand the intended meaning.