| 646 | specifications |
| Engine | Volvo BM TD 42 |
| Engine output (SAE), hp | 86 |
| Bucket volume, excav., l | 380 |
| Excavation depth, mm | 4 220 |
| Reach, mm | 5 860 |
| Bucket volume loader, m3 | 1,25 |
| Tires front | 14.9-24/14 |
| Tires rear | 18.4-34/14 |
| No. of driven wheels | 4 |
| Operating weight, kg | 9 750 |
| Production year | 1977–1981 |