the operator continues to pivot the lever 43 in a counterclockwise direction and exert a tension force on the link 42 the lever 38 will continue to rotate in a counterclockwise direction however the bucket 22 is now fully closed and it will be precluded from further movement by its contact with the discharge nozzle 19 as a result the torsional spring 41 will yield but the lever 38 will continue to rotate and exert a force on the link 36 that acts through the pivot pin 37 on the closure plate 34 the closure plate 34 will then be pivoted about its pivotal support 35 to a closed position across the opening 33 fig7 as seen in fig7 when the plate 34 is closed the configuration of the discharge end of the bucket 22 will be changed so that the forwardly facing opening 32 now forms the water discharge as a result a reverse thrust will be generated and the watercraft will be operated in reverse shifting from reverse back to forward drive occurs in the opposite direction under this condition the link 42 is urged rearwardly so as to pivot the lever 38 in a clockwise direction the initial movement will.