I'm only familiar with the Belanger Vector, and my spare parts list would be the same plus a spare photo emitter/receiver set, spare proxes, maybe a spare encoder card, and obviously spare hoses. I replaced the overhead lines with stainless steel pipe made so that each joining hose was 36", the same length as the ones to the arms. It was a half-day job (and an expensive one) to replace one of the boom hoses, but it only took five minutes to change a short length.