Husqvarna 125b Leaf Blower not running correctly
You said:

may have been stored for an extended time with fuel mix in it

These sorts of engines are VERY sensitive to storage with Ethanol-containing fuel in them.  Your carburetor is almost certainly damaged or clogged and needs to be replaced or cleaned and rebuilt.
Do not EVER store such equipment without draining the fuel first and I've found it helpful use use E0 fuel (i.e. 0% Ethanol content) at all times.  You can buy this at most home centers and hardware stores (See &quot;TruFuel&quot; or similar) brands or at gas retailers such as marinas and Farm Bureau Coops that sell E0 gasoline.