how do you change the impeller on a Johnson 9.9 out board motor
The impeller on a 9.8 Mercury outboard boat motor can be easily changed. Remove the retaining bolt. The impeller will come off. Reverse the process to install the new impeller.
Planetnautique.com
Impeller make the flow has velocity in a centrifugal pump. The purpose of pump is increasing the pressure. The flow has velocity envergy via impeller and the energy change to pressure energy in diffuser.
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Where does the water port com out from noted
First, remove the lower unit (there is a housing for the water pump). The drive shaft goes through the housing and turns impeller. Remove the housing, the impeller is on the shaft. Install the new impeller. When replacing the housing, turn the drive shaft clockwise to make it slide down over the impeller.
How do you change a water pump impeller on a 1993 Johnson out board
You cannot do that. The pump impeller blades will only work one way.You cannot do that. The pump impeller blades will only work one way.
What year? It may require special tools.
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change impeller or check for blocks in water lines