Carburetor Interchange Chart

                              CARBURETOR INTERCHANGEABILITY CHART

    Model Number      Horse Power     Year Built   Original Carburetor  Replacement Carburetor
    ------------      -----------     ----------   -------------------  ---------------------
      571.58201            2             1952            MD 59A                MD 59A
      571.58202            2             1953            MD 59A                MD 59A
      571.58211            2           1954-56           MD 59A                MD 59A
      571.58301           1¼           1946-51            MD 1A                MD 1A
      571.58401           2½           1946-51            MD 2A                MD 2A
      571.58501           3½             1947             MD 3A                MD 38A
      571.58521           3½           1947-48            MD 3A                MD 38A
      571.58531            5             1950            MD 19A1               MD 38A
      571.58541            5             1949            MD 18A                MD 38A
      571.58551            5             1950        MD 18A1, MD 38A           MD 38A
      572.58561            5           1951-52           MD 57A                MD 57B
      571.58562            5             1953            MD 57B                MD 57B
      571.58571            5           1954-55           MD 79A                MD 7A
      571.58601           5½             1947             MD 4A                MD 39A
      571.58611           5½             1947             MD 4A                MD 39A
      571.58621           5½             1948             MD 4A                MD 39A
      571.58641            6             1951            MD 39AX               MD 57B
      571.58642            6             1953            MD 69A                MD 69A
      571.58651            6             1954            MD 68BX              MD 68BX
      571.58652            6             1954            MD 80A                MD 80A
      571.58701            6             1950             MD 4A                MD 39A
      571.58711           7½             1955            MD 80A                MD 80A
      571.58721            6             1948             MD 4A                MD 39A
      571.58731           7½             1949            MD 19A                MD 39A
      571.58741           7½             1950            MD 39A                MD 39A
      571.58751           7½           1951-52           MD 39A                MD 39A
      571.58761           7½             1953            MD 68B                MD 68B
      571.58762           7½             1954            MD 80A                MD 80A
      571.58771           7½             1954            MD 68BX              MD 68BX
      571.58772           7½           1954-55           MD 80A                MD 80A
      571.58821           16           1950-51           MD 32A                MD 32B
      571.58822           16             1952            MD 32B                MD 32B
      571.58823           16             1953            MD 32B                MD 32B
      571.58824           16             1954            MD 32B                MD 32B
      571.58841           16           1950-51           MD 32A                MD 32B
      571.58842           16             1952            MD 32B                MD 32B
      571.58843           16             1953            MD 32B                MD 32B
      571.58844           16             1953            MD 32B                MD 32B
      571.58851           16             1954            MD 32B                MD 32B
      571.58861           16             1954            MD 32B                MD 32B

      NOTE:

       1. MD 38A is the same as MD 3A and MD 39A, except,

            1. Filter bowl added
            2. New idle system (turn idle screw clockwise to lean mixture).

       2. MD 39A is the same as MD 4A except,

            1. MD 39A has the long knurled idle adjustment screw which turnsclockwise to lean
               mixture.

       3. MD 38A also has the long knurled idle adjustment screw which turns clockwise to
          lean mixture.
       4. MD 18A has a short slotted idle screw which turns counterclockwise to lean mixture.
       5. MD 18A1 and MD 19A1 both have long knurled idle screws which turn counterclockwise
          to lean mixture.