Pin apparatuses and methods are disclosed having particular suitability for use with machine handles such as those associated with walk-behind machines such as lawnmowers. A pin apparatus may include a housing defining an opening for receiving at least a portion of a pin. The pin may include an elongated pin body having a proximal end section and a distal end section. The pin apparatus may further include a pin handle external from the housing for moving the pin within the housing. At least a portion of the pin body can be positioned at least partially through a machine handle and at least a portion of the housing can be positioned outside of the machine handle. Rotation of the pin handle can move the pin between the extended position and the retracted position.