| AI Serial Numbers (same as AR) | ||
| Tag Location: Left side of crankcase, by Flywheel, near top | ||
| Year | Beginning S/N | Ending S/N |
| 1936 | 250000 | 253520 |
| 1937 | 253521 | 255415 |
| 1938 | 255416 | 257003 |
| 1939 | 257004 | 258044 |
| 1940 | 258045 | 259999 |
| 1941 | 260000 | 261557 |
| AI# | rebuilt into AR# | and was sent to |
| 252382 | 254163 | Aberdeen, SD |
| 252436 | 254165 | Calgary Sales Branch, Calgary, SK, Canada |
| 252453 | 254158 | London, ON, Canada |
| 252477 | 254167 | Kansas City Sales Branch |
| 252737 | 254164 | Brush, CO |
| 252749 | 254159 | Winnepeg, MB, Canada |
| 252784 | 254180 | Watonga, OK |
| 252785 | 254166 | Kansas City Sales Branch |
| 252943 | 254162 | McCook, NE |
| 253004 | 254178 | Melaval, SK, Canada |
| 252140 | 254179 | Beloit, KS |