If the engine doesn't say "FT-120 II" on the case just behind the drive washer, it's the earlier FT-120. There are zero parts available for it any more. the FT-120 II had some parts in common with the FT-160. The older FT-120 has virtually no parts in common with the FT-120 II or FT-160. Most parts for the FT-120 II are still available.