Ariens Platinum (30) SHO 414cc Two-Stage Snow Blower 921040Ariens Platinum (30) SHO 414cc Two-Stage Snow Blower 921040. New Super High-Output Impeller (SHO). Faster impeller speeds by way of modified belts and pulleys. Improved output and throwing distance. Powerful 414cc Ariens AX414 Engine. Designed to function in sub-zero conditions. 120-volt electric start w/recoil (cord not.