Suzuki DF25/DF30 Four Stroke Service Manual, Page 243Get this manual
LOWER UNIT 10-19 WATER PUMPImpellerCasePlace the under panel gasket and under panel in positionInsert the key in the driveshaft and slide the impeller onto driveshaft, ensuring that key and keyway are aligned
Install the pump case while rotating driveshaft clockwise to flex the impeller vanes in the correct directionSecurely tighten the four (4) pump case nuts to the specified torquePump case nutN.m (0.8 kg.m, 5.8 lbft