How do you change a water pump on a 1995 Suzuki outboard jet motor 140HP?

Answer 1

The lower unit comes apart the same as if it had a prop. The water pump is in the same location as the standard lower unit prop assembly.

The only difference on the jet is, you do not have to disconnect the shift lever, because it is not used on the inside of the lower unit. Remove the shift cable on the outside of the pump unit. Remove the bolts on the upper part of the jet pump that connects the unit to the mid portion of the lower section. The pump unit is then removed from the motor along with the pump drive shaft as one unit. The pump housing is located on the top of the pump unit. Unbolt the pump housing from the lower unit and slide the housing and impeller off the shaft. Be careful not to lose the key that secures the impeller to the shaft (if used). Most kits include a new key, lower plate, housing and impeller. Be sure to fold the rubber impeller in the same direction as the original impeller.

It is a good practice to apply a small amount of rubber safe lubricant to the housing when the impeller is installed to prevent a "dry fire" of the impeller when first started.

Assembly is just the opposite of the removal.