The Husqvarna 581155001 Leaf Blower / Vacuum Carburetor helps regulate fuel and air flow for reliable engine starting and operation. This replacement carburetor mixes fuel with incoming air and delivers the mixture to the engine for combustion. Proper mixture control supports smooth starting, steady engine performance, and consistent power during blowing or vacuuming tasks. Replacing ... https://www.wholetoolbox.com/husqvarna-581155001-leaf-blower-vacuum-carburetor/581155001.html