Specs
| POWER SOURCE | Battery |
| WEIGHT | 15.2 lbs. |
| WEIGHT (w/ AP 500 S) | 19.6 lbs. |
| RUN TIME (w/ AP 500 S) UP TO | 50 min. |
| CUTTING WIDTH | 20.5 in. |
| BATTERY SYSTEM | AP System |
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The FSA 400 K is purpose-built for clearing thick vegetation and small-diameter trees. As the most powerful clearing saw in the AP Battery System—with performance comparable to the gas-powered FS 361 C-EM—it’s designed to take on demanding jobs in forestry, municipal, and landscape applications. Compatible with STIHL brush knives and circular saw blades, this short-shaft unit excels in dense, tough growth where precision and power matter. And with comfort-focused features like an ergonomic control handle and anti-vibration system, it delivers pro-level performance without compromising user experience. Read More
| POWER SOURCE | Battery |
| WEIGHT | 15.2 lbs. |
| WEIGHT (w/ AP 500 S) | 19.6 lbs. |
| RUN TIME (w/ AP 500 S) UP TO | 50 min. |
| CUTTING WIDTH | 20.5 in. |
| BATTERY SYSTEM | AP System |