can't read numbers on 90 something Yamaha 40 hp and Son had high temp alarm sound off at the lake Friday. In NY for the summer and all info on motor is at home in file cab in Florida. Going to call local shop Monday and have them change water pump/impellar if they can do it within a week. If not any ideas on how to find out year so I can order new impellar and do it ourself. Video looks pretty easy.