Thanks for your comments.
This confirm my suspicion.. The problem with Talon is that it�s very difficult to find spare parts outside AU. On ebay US I found many walbro WYL carburettors but it�s very difficult to tell which one will work on my machine.
I love old stuff built to last such us the old B&S engines. This crap made in China it made to last just to the end of the warranty period!