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General Information:


  • 1957 & 58 engines were known to have been painted "Sunset Orange" & "Sand Tan," and all "Charcoal."
  • Model & serial numbers were on the instruction plate riveted to the swivel bracket above and between the clamp screws. Serial numbers 1057994 thru 1072993 are 1957 - 58 models.
  • There is a group of engines serial # 111???? to 1120827 that are 1958 production.
  • These engines, while technically interesting, have an unusual transmission design that makes them complicated and challenging to service.