Powerful 4.4 kW high-performance for emergency operations and fire-fighting. Quick-release tensioner for easy securing of the cut-depth limiter. STIHL M-Tronic provides optimum engine performance at all times, also featuring long-life air filter system with HD2 filter with excellent filtering effect. Large starter grip and decompression valve for safe and easy starting, special saw chain plated with impact-resistant carbide plates.