This workshop manual covers the Stihl MS231 and MS251 models, powered by efficient 2-stroke petrol engines. The MS231 features a 40.2 cc displacement and 2.3 kW (3.1 bhp) power output, while the MS251 offers 45.4 cc and 2.7 kW (3.7 bhp). Both models are designed for professional and domestic use, incorporating advanced features such as an anti-vibration system and an inertia-activated chain brake for enhanced safety and operator comfort. Their robust construction and reliable performance make them suitable for a variety of cutting tasks, with various bar length options available to suit different applications.

This manual provides comprehensive guidance for the repair and maintenance of the Stihl MS231 and MS251. It details essential procedures, including lubrication, fuel system management, and spark plug replacement, along with technical specifications for engine and transmission components. The information contained herein is intended to assist owners, mechanics, and technicians in ensuring the optimal performance, longevity, and safe operation of these powerful cutting tools.

This workshop manual covers the Stihl MS231 and MS251 models, powered by efficient 2-stroke petrol engines. The MS231 features a 40.2 cc displacement and 2.3 kW (3.1 bhp) power output, while the MS251 offers 45.4 cc and 2.7 kW (3.7 bhp). Both models are designed for professional and domestic use, incorporating advanced features such as an anti-vibration system and an inertia-activated chain brake for enhanced safety and operator comfort. Their robust construction and reliable performance make them suitable for a variety of cutting tasks, with various bar length options available to suit different applications.

This manual provides comprehensive guidance for the repair and maintenance of the Stihl MS231 and MS251. It details essential procedures, including lubrication, fuel system management, and spark plug replacement, along with technical specifications for engine and transmission components. The information contained herein is intended to assist owners, mechanics, and technicians in ensuring the optimal performance, longevity, and safe operation of these powerful cutting tools.