Piece of cake. There is a set screw that needs to be removed that is screwed from the right side into the side of the upper tach support (i.e. part that is screwed to the dash). Remove this and then pull the tach towards you to remove from the bracket. May be a bit tricky as the wiring passes up through the center of the bracket and into the dash. Turn the tach around and remove the screw at the back of the housing. Pop 'her open and you will see her in all her glory. Rest is straight forward.
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