#$%^&*AU2010101083B420121011.pdf#####7 ABSTRACT 5 A post driver which includes a vertical support frame and a carriage arranged to move vertically relative to said frame. A high frequency low impact hammer is arranged within the carriage to move relative to the carriage. The hammer impacts a post cap for seating on the top of a post which is held within the lower section of the carriage and a post guide allows for limited movement relative to the carriage. 10 An auger attachment is provided in which the auger carriage is locked to the hammer carriage when in use and is locked to the vertical support frame in its stowed position.