An apparatus for raising and lowering a mower deck guard/chute includes a platform attachment assembly configured for attachment to a movable platform, a housing mount configured to be attached to a riding machine surface, and a linkage assembly having a break-away safety mechanism and configured to connect the platform attachment assembly to the housing mount and to thereby hold the movable platform in a variably raised position. The break-away safety mechanism is configured to break the connection between the platform attachment assembly and the housing mount when a tensile force is applied to the linkage assembly due to snagging or entanglement of the deck guard and/or apparatus.