Suzuki DF 25 Service Manual page 243

WATER PUMP ( Impeller & Case )
Place the under panel gasket 1 and under panel 2 in position.
Insert the key 3 in the driveshaft and slide the impeller 4 onto
driveshaft, ensuring that key and keyway are aligned.
Install the pump case 5 while rotating driveshaft clockwise to
flex the impeller vanes in the correct direction.
Securely tighten the four (4) pump case nuts to the specified
torque.
Pump case nut : 8 N . m (0.8 kg . m, 5.8 lb.-ft.)
PROPELLER INSTALLATION
Apply Water Resistant Grease to the propeller shaft.
Install propeller stopper 1, propeller 2, spacer 3, washer 4
and nut 5 in turn.
Tighten the propeller nut to the specified torque.
99000-25160 : Water Resistant Grease
Propeller nut : 18 N . m (1.8 kg . m 13.0 lb.-ft.)
Push cotter pin 6 through nut and shaft, then bend to secure.
LOWER UNIT 10-19