A lawn mower may include a blade housing configured to house at least one blade, an engine supported at least in part by the blade housing to selectively rotate the at least one blade, a handle assembly comprising at least one handle member for guiding operation of the lawn mower by an operator walking substantially behind the lawn mower, and a handle height adjustment assembly. The handle height adjustment assembly enables the handle member to be fixed in at least a first operating position or a second operating position each of which defines different handle heights for the handle member responsive to the handle height adjustment assembly being in a locked state, and enables the handle member to be rotated between the first operating position, the second operating position, and a folded position responsive to the handle height adjustment assembly being in an unlocked state.
