A sugarcane harvester for harvesting sugarcane including a main frame, a basecutter, and a coupler configured to couple the main frame to the basecutter, the coupler including a leg rotatably coupled to and extending from one of the main frame or a frame of the basecutter and a receiver fixedly coupled to the other of the main frame or the basecutter frame. A catch is located at the receiver, wherein the catch engages the leg to locate the main frame at a fixed distance with the basecutter. The catch includes a spring actuated plunger to engage a depression in the arm to fixedly couple the basecutter and the main frame. In one embodiment, the sugarcane harvester includes basecutter frames or split frames, each of which is rotatably connected to the mainframe with a coupler.