Model 92 - single cylinder - 3/4 HP

219717 -to- 248522..............................................1927
248523 -to- 326800..............................................1928
326801 -to- 411464..............................................1929
411465 -to- 460999..............................................1930
461000 -to- 480624..............................................1931
480625 -to- 490503..............................................1932
490504 -to- 523885..............................................1933
523886 -to- 593050..............................................1934
593051 -to- 680050..............................................1935
680051 -to- 760247..............................................1936
760247 -to- 803840..............................................1937

Model 72 - twin cylinder - 5/8 HP

810000 -to- 838900..............................................1937
838901 -to- 879229..............................................1938
879230 -to- 911945..............................................1939
911946 -to- 941754..............................................1940
941755 -to- 970789..............................................1941
970790 -to- 979846..............................................1942

No production May 1942 thru July 1945 (WWII)

979847 -to- 983497..............................................1945
983498 -to- 1017096............................................1946
1017097 -to- 149199X..........................................1947
149200X -to- 182645X.........................................1948
182646X -to- 193437X.........................................1949
193438X -to- 199242X.........................................1950
199243X -to- 203424X.........................................1951
203425X -to- 205427X.........................................1952

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