Henzee, the part you are looking for is called the KitchenAid blender drive coupling. It is the little black rubber piece ontop of the motor base that looks like a crown with six teeth on top. The motor spins this piece which them spins the blades. It is a very common replacement part for the KSB5 blenders made by KitchenAid.
The part number you are looking for is 9704230, i am not aware of any places in Africa that sell the part but you can probably find someone in the USA that can ship it to Africa.
Here is a link to the video we have on changing the part out:
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