Yamaha - Water Pump Repair Kit - 61A-W0078-A1-00 - See Description for Applicable Engine ModelsYamaha Water Pump Repair Kit Cooling System Service Kit 61A W0078 A1 00 If youve worked on Yamaha two strokes long enough, you know the water pump is one of those service items you dont gamble with. The Yamaha Water Pump Repair Kit 61A W0078 A1 00 restores proper cooling flow so your motor can run hard without overheating. Its the kind of maintenance kit many techs install during regular lower unit service or before a long season on the water. Keeping