Hipa BR430 Carburetor for S-tihl BR350 BR450 SR430 Backpack Blower Parts Zama C1Q-S209 4244-120-0611 Carb Kit with Air Filter Tune Up Kit

As an owner of a similar model, clean or replace your carburetor. Replacing that will cost you $22-30 on Amazon and you can replace the fuel lines, fuel filters, air filters, and all the goodies to get it running like new. And if you're handy with tiny parts you can always clean these yourself, but rebuilding a carburetor this size has some almost watch sized components, so be prepared to be meticulous and precise with all the small parts as you clean and reassemble. This is an example of a carb kit, be sure to cross reference your blower model to make sure you get the right kit.