Home / Compare
Comparison
2 models side by side, spec by spec.
Independent reference database. Specs are compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.
Best suited for
Each model's factual fit, from its duty class and key specs — no winner declared.
- Stihl MS 251 WOOD BOSS Farm & ranch occasional firewood, limbing, fence-line clearing, and storm cleanup (46 cc · 18-in bar)
- Echo CS-4510 Homeowner occasional cutting: limbing, small trees, and light firewood around the property (45 cc · 16-in bar)
Specs verified against the manufacturer spec sheet on — stihlusa.com.
Specs verified against the manufacturer spec sheet on — echo-usa.com.
| Spec | Stihl MS 251 WOOD BOSS | Echo CS-4510 |
|---|---|---|
| Engine | ||
| Displacement | 2.8 cu in (45.9 cc) | 2.75 cu in (45 cc) |
| Engine Power | 3 hp | — |
| Fuel Capacity | 0.1 gal (0.39 L) | 0.13 gal (0.48 L) |
| Power | 2.2 kW | — |
| Power-to-Weight | 2.2 kg/kW | — |
| Bar & Chain | ||
| Chain Gauge | 0.050 in | — |
| Chain Pitch | .325" | — |
| Guide Bar Length | 17.99 in (457 mm) | 15.98 in (406 mm) |
| Oil Capacity | 6.76 fl oz (200 mL) | 11.1 fl oz (328.27 mL) |
| Oiler | — | Automatic/adjustable |
| Dimensions & Weight | ||
| Length | 16.69 in (424 mm) | — |
| System Weight | 12.59 lb (5.71 kg) | — |
| Weight | 10.6 lb (4.81 kg) | 11.11 lb (5.04 kg) |
| General | ||
| Anti-Vibration | — | Yes |
| Power Source | gas | gas |
| Warranty | — | 5 yr |