One of the visual changes on the new Kawasaki STX-15F is hidden within its pump, which accommodates a brand new impeller. The later use to have a three-blade design until last years model, and additionally it was of stainless steel and had a pitch of 10/17. Though, this years model is equipped with a four-blade impeller, with a design similar to the NuJet impellers. The manufacturer has, notconfirmed yet the pitch of this new stainless steel impeller.
