A telescoping coulter system for an agricultural machine, operable on ground and having a frame and a moveable structure, includes a coulter arm, having a proximal end with a pivot point, and a distal end bearing a rotatable coulter disk. An extension mechanism connects the frame to the coulter arm, and is configured to translate the coulter arm between a raised transport position not in mechanical conflict with the moveable structure, and a lowered operational position in which the coulter disk can contact the ground and is proximate to the moveable structure.
