How does the water pump work on a 1986 Kawasaki 550 jet ski work?
The impeller spins and compresses water into the jet nozzle. This creates a high pressure area. This water is shot out the back, and the steering nozzle diverts left and right to steer the ski. Engine cooling water is bled off the high pressure area (90 degree brass elbow) and routed though the engine, exhaust, water box and out the hull..