Engine Max Slope Ratings
| Model | Continuous Use | Intermittent Use |
|---|---|---|
| 3121 | 25° 46.6% grade |
25° 46.6% grade |
| 3223D | 25° 46.6% grade |
25° 46.6% grade |
| 4131 | 25° 46.6% grade |
30° 57.7% grade |
| 4227 | 25° 46.6% grade |
30° 57.7% grade |
| 4226D | 30° 57.7% grade |
30° 57.7% grade |
| 4231TD | 30° 57.7% grade |
30° 57.7% grade |
| 3000 series | |
|---|---|
25° max up & down 46.6% grade |
20° max sideways on hill
36.4% grade |
| 4000 series | |
|---|---|
30° max up & down
57.7% grade | ![]() 30° max with
dual wheels
57.7% grade |
25° max with 3" wheel extensions 46.6% grade |
20° max without duals or extensions
36.4% grade |
