The parts question comes first

Establish before anything else whether you can still buy springs, ropes, wheels and upholstery for the model. A discontinued machine from a manufacturer that no longer supports it is a machine with a fixed remaining life, however good it looks today.

This single check disqualifies more used reformers than any mechanical fault, and it is the one people skip.

The ten-point physical inspection

Work through these in order. The first three are the ones that make a machine not worth buying at any price.

  • Carriage side-play — rock the carriage laterally at both ends of travel; near-zero is what you want
  • Frame squareness — measure both diagonals of the frame; more than about 1/8 in difference means it has racked
  • Rail condition — run a finger along the rail for scoring, pitting or corrosion
  • Spring free length — compare unloaded springs against the manufacturer spec; fatigued springs sit long
  • Rope and strap wear — look for fraying at the pulleys and stiffness where they pass through hardware
  • Pulley bearings — spin each pulley; it should turn freely and silently
  • Footbar lock — check it holds firmly in every position under load
  • Upholstery — press for foam that has gone hard or split seams
  • Shoulder rests — confirm they are secure and not compressed unevenly
  • Feet and levellers — check nothing is missing, which is a common cause of apparent frame twist

What is fine to fix, and what is not

Ropes, springs, upholstery and wheels are consumables. Budget $200–$500 to refresh all of them and treat that as part of the purchase price rather than a fault.

A racked frame or a scored rail is different. Both are structural, both are expensive or impossible to correct, and both will keep getting worse. Walk away from those regardless of price.