Model L, 5 H.P. – Serial Numbers
| Start | End | Year |
| 2465 | 2781 | 1939 |
| 2782 | 4105 | 1940 |
| 4106 | 6054 | 1941 |
| 6055 | 7454 | 1942 |
| 7455 | 9130 | 1943 |
| 9131 | 11213 | 1944 |
| 11214 | 13320 | 1945 |
| 13521 | 18957 | 1946 |
| 18958 | 27996 | 1947 |
| 27997 | 38755 | 1948 |
| 38756 | 48399 | 1949 |
| 48400 | 56450 | 1950 |
| 56451 | 66029 | 1951 |
| 66030 | 75922 | 1952 |
| 75932 | 86142 | 1953 |
| 86143 | 95440 | 1954 |
Model L, 6.6 H.P
| From | To | Year |
| 95441 | M5565 | 1955 |
| M5566 | M15873 | 1956 |
| M15874 | M26693 | 1957 |
| M26694 | M36957 | 1958 |
| M36958 | M50080 | 1959 |
| M50081 | M62157 | 1960 |
| M62158 | M75700 | 1961 |
| M75701 | M90897 | 1962 |
| M90898 | 2M4745 | 1963 |
| 2M4746 | 2M18900 | 1964 |
| 2M18901 | 2M34215 | 1965 |
| 2M34216 | 2M51800 | 1966 |
Model 7.6 HP
| From | To | Year |
| J7600 | J23680 | 1967 |
| J23681 | J35750 | 1968 |
| J35751 | J52820 | 1969 |
| J52821 | J64939 | 1970 |
| J64940 | J75550 | 1971 |
| J75551 | J87989 | 1972 |
| J87990 | J191356 | 1973 |
| 101357 | 116522 | 1974 |
| 116523 | 125962 | 1975 |
| 1976 |
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