Yamaha - Water Pump Housing - 688-44311-01-00 - See Description for Applicable Engine Models Yamaha-F150-2017 And the gearcase drain seals

And the gearcase drain seals give you a clean

though proper hose routing and clamps are essential

A turbulator gasket may be small

Just replace one wire at a time

and other exposed metal gear

Yamaha - Water Pump Housing - 688-44311-01-00 - See Description for Applicable Engine Models Yamaha-F150-2017 And the gearcase drain sealsYamaha Water Pump Housing 60, 70, 75, 90 Cooling System Component 688 44311 01 00 Overview On these mid range Yamaha two strokes, the water pump housing is what keeps the cooling system working the way it should. It holds the impeller in place and directs water up through the engine, keeping temps under control. If it gets worn or scored, youll lose water pressure fastand thats when overheating problems start creeping in. Swapping it out during a pump