How do you change the vane on a John Deere JS20?

To change the vane on a JOHN DEERe JS20, first ensure the mower is turned off and disconnected from the power source. Remove the screws or fasteners securing the cover or housing to access the vane assembly. Carefully detach the old vane and replace it with the new one, making sure it is properly aligned. Finally, reassemble the cover and securely fasten it before reconnecting the power and testing the mower.