Door Closer Assy,RH/LH SVCE (501R, 501F, 601R,
          601RG, 601F, 601R-2, 601RG-2, 601F-2)
    NOTE: FOR CARBON UNITS SEE 4201117.
  501R    Starting with #M834654/P835904. Prior to
          #M834654/P835904 see 7014652 and
          7014650 or 7014663
  501F    Starting with #M834904/P836154. Prior to
          #M834904/P836154 see 7014652 and
          7014650 or 7014663
  601R    Use Regardless of Serial Number.
  601RG   Use Regardless of Serial Number.
  601F    Use Regardless of Serial Number.
  601R-2  Use Regardless of Serial Number.
  601RG-2 Use Regardless of Serial Number.
  601F-2  Use Regardless of Serial Number.