| All Specs shown in U.S. Measurements | ||||||
| Inches, Pounds, Miles Per Hour, Revolutions Per Minute, Pound/Force | ||||||
| Model | JM 204 | JM 224 | JM 254 | JM 284 | JM 304 | JM 354 |
| Overall Dimensions | 104.9 | 108.09 | 117.7 | 117.7 | 123.8 | 123.8 |
| LxWxH | 48.6 | 50.7 | 50.7 | 50.7 | 57 | 57 |
| 51.1 | 56.6 | 56.6 | 56.6 | 80.7 | 80.7 | |
| Wheel Base - Front to Rear | 59.4/61.4 | 63.8 | 63.9/64.6 | 63.9/64.6 | 72.1 | 72.1 |
| Wheel Width Front | 37.4 | 37.4 | 41.3 | 41.3 | 47.2 | 47.2 |
| Wheel Width Rear - Adjustable | 35.4/40.1 | 37.4/43.3 | 42/49.2 | 42/49.2 | 39.3/55 | 39.3/55 |
| Ground Clearance | 11.6" | 12" | 11.6 | 11.6 | 11.4 | 11.4 |
| Tire Size Front | 6x12 | 6x12 | 6x16 | 6x16 | 6x16 | 6x16 |
| Tire Size Rear | 8.3x24 | 8.3x24 | 9.5x24 | 9.5x24 | 11.2x24 | 11.2x24 |
| Tractor Weight - Unloaded | 2646 | 2668 | 2734 | 3009 | 3395 | 3395 |
| Forward - Speeds | .40 - 15 | .40 - 15 | .40 - 15 | .40 - 15 | 1.1 -14.8 | 1.1 -14.8 |
| Reverse Speeds | .54 - 6.4 | .54 - 6.6 | .54 - 6.4 | .54 - 6.4 | 1.4 -6.77 | 1.4 -6.77 |
| PTO Speeds | 540/1000 | 540/1002 | 540/1000 | 540/1000 | 540/720 | 540/720 |
| 3 Point Hitch | Cat. 1 | Cat. 1 | Cat. 1 | Cat. 1 | Cat. 1 | Cat. 1 |
| Hitch Lift Capacity | 742 | 877 | 876 | 876 | 1113 | 1113 |
| Engine HP | 20 | 22 | 25 | 28 | 30 | 35 |
| RPM | 2200 | 2300 | 2350 | 2400 | 2000 | 2000 |
| Engine Type | 3 Cyl. Vertical | 3 Cyl. Vertical | 3 Cyl. Vertical | 3 Cyl. Vertical | 3 Cyl. Vertical | 3 Cyl. Vertical |
| Water Cooled | Water Cooled | Water Cooled | Water Cooled | Water Cooled | Water Cooled | |
| 4 Stroke Diesel | 4 Stroke Diesel | 4 Stroke Diesel | 4 Stroke Diesel | 4 Stroke Diesel | 4 Stroke Diesel | |
| Rated HP | 20 | 22 | 25 | 28 | 30 | 35 |
| Clutch | Dual Stage | Dual Stage | Dual Stage | Dual Stage | Dual Stage | Dual Stage |
| Manual | 3 Gear | 3 Gear | 3 Gear | 3 Gear | 4 Gear | 4 Gear |
| Gearbox - Forward Speeds | 12 | 12 | 12 | 12 | 8 | 8 |
| Gearbox - Reverse Speeds | 2 | 2 | 2 | 2 | 2 | 2 |
| HI/LO + | Yes - | Yes - | Yes - | Yes - | Yes - | Yes - |
| Creeper | Yes - | Yes - | Yes - | Yes - | No | No |
| Power Steering | Yes - | Yes - | Yes - | Yes - | Yes - | Yes - |
| Standard | Cross Mounted | Cross Mounted | Cross Mounted | Cross Mounted | Cross Mounted | Cross Mounted |
| Brakes | Disc | Disc | Disc | Disc | Disc | Disc |
| Model | JM 204 | JM 224 | JM 254 | JM 284 | JM 304 | JM 354 |