RYOBI GAS HEDGE TRIMMER 26000?

HAVE TROUBLE TURNING ON AND OFF. WAS TOLD TO PURCHASE A PACKMAN TOOL TO OPEN THE STREAM LINE. TRIMMER IS IN BRAZIL WITH MY DAUGHTER AND SON-IN-LAWS BUSINESS. PURCHASED HERE IN THE US. IS THE GAS RATIO DIFFERENT IN BRAZIL? IF THE STREAM TOO NARROW? WHY IS IT NOT STARTING OR STARTING AND STOPPING. ONLY 6MOS OLD BUT CAN NOT WARRANTRY IT AS IT IS NOT HERE IN THE US. WAS SENDING THE PACKMAN TOOL THAT I PURCHAED FROM EBAY. SHOULD I BE DOING SOMETHING ELSE. THANKS A LOT