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.
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.
Where does the water port com out from noted
How do you change the oil in a 1967 3Hp Evin-rude outboard motor?
see this site http://sites.google.com/site/bf50impellernotes/
What year? It may require special tools.
Every two years to be safe
change impeller or check for blocks in water lines
18-3085 sierra
Sprinkle liberally a vile of gypsy tears
Changing the impeller on a Johnson 70 hp outboard motor requires pulling the power head and disconnecting the engine. Once this is done, an open end wrench can be used to first loosen the fitting before removal.
You will probably have to drop the lower end of the outboard. Its sound hard but really it is usually quite simple. The pump is nothing more than rubber impeller on a brass collet.
how do you change the impeller on a Johnson 9.9 out board motor