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.