Patent ID: 6068529
Filing Date: 2000-05-30
Classification: B63H,F01N,F01P,F02B

Abstract:
A marine propulsion unit for a watercraft, comprising a gearcase including a lower torpedo, a propeller shaft mounted for rotation in said torpedo and having an aft end projecting rearwardly from the aft end of said torpedo, a water pump in said gearcase and having an inlet opening, said gearcase having a generally vertically sidewall, a first inlet port on said sidewall forward of said aft end of said torpedo and supplying water under side pressure therethrough, a second inlet port on the front of said gearcase and supplying water under ram pressure therethrough, a first passage receiving water from said first inlet port, a second passage receiving water from said second inlet port, a third passage receiving water from said first and second passages and communicating with said inlet opening of said water pump such that each of said inlet ports communicates with the other of said inlet ports through said third passage at a location upstream of said water pump.