The Husqvarna 599886701 Leaf Blower Cylinder & Piston supports engine compression and combustion for reliable blower performance. This replacement cylinder and piston set works together inside the engine, with the piston moving within the cylinder as combustion produces power to drive the blower. Proper compression and piston movement support consistent engine operation and power deli... https://www.wholetoolbox.com/husqvarna-599886701-leaf-blower-cylinder-piston/599886701.html