The MS251 chainsaw, produced by the renowned manufacturer Stihl, is a powerful and versatile tool designed for a wide range of cutting and trimming tasks. In this article, we’ll explore the technical details of the MS251 chainsaw, along with instructions on its proper operation. Whether you’re a seasoned user or a novice, this guide will help you understand and make the most of this reliable tool.
Technical Specifications
Engine
The MS251 is equipped with a robust 2-MIX engine, known for its fuel efficiency and low emissions. Key engine specifications include:
- Displacement: 45.6 cc
- Power Output: 2.2 kW (3.0 hp)
- Maximum Engine Speed: 12,800 RPM
Cutting Equipment
The MS251 features a high-quality chain and bar for efficient cutting. Essential cutting equipment details include:
- Chain Pitch: 3/8 inch
- Recommended Bar Length: 16-18 inches (40-45 cm)
- Chain Type: PM3 (Picco Micro 3)
Weight and Dimensions
- Weight (without bar and chain): Approximately 10.8 lbs (4.9 kg)
- Fuel Tank Capacity: 0.5 liters (500 cc)
Key Features
1. Stihl’s 2-MIX Engine Technology
The 2-MIX engine in the MS251 combines power and fuel efficiency. It reduces fuel consumption and emissions while delivering impressive cutting performance. This engine technology ensures longer run times and less impact on the environment.
2. Quick Chain Tensioning
The chainsaw is equipped with a practical and easy-to-use Quick Chain Tensioning system. This feature simplifies chain adjustments, enhancing safety and reducing downtime during operation.
3. Anti-Vibration System
The MS251 incorporates an anti-vibration system to reduce operator fatigue and ensure comfortable handling. This feature is particularly beneficial during extended use.
4. Decompression Valve
Starting the chainsaw is made more manageable by a decompression valve that reduces the compression in the cylinder during starting. This feature minimizes the effort required to pull the starter rope.
Proper Operation
Using the MS251 chainsaw safely and effectively is essential. Here’s a step-by-step guide to operating this tool:
Safety Gear: Before starting, ensure you have the necessary safety gear, including a helmet, eye protection, gloves, and chainsaw chaps or pants.
Starting the Chainsaw:
- Engage the chain brake.
- Press the decompression valve.
- Set the master control lever to the cold start position.
- Pull the starter rope until the engine fires, then push the choke control back in.
- Pull the starter rope again until the engine starts.
Warm-Up: Allow the engine to warm up by running it at idle for a short time.
Cutting Technique: When cutting, use a firm grip, both hands on the handles, and position yourself correctly. Keep a firm stance and maintain control of the chainsaw throughout the cut.
Chain Maintenance: Regularly check and maintain the chain’s sharpness and tension for optimal cutting performance.
Fuel and Lubrication: Use the correct fuel and chain oil recommended by the manufacturer.
Storage: When not in use, store the chainsaw in a cool, dry place, and ensure it is properly maintained.
Maintenance: Follow the manufacturer’s guidelines for routine maintenance, such as cleaning the air filter, spark plug, and inspecting the chain brake.
In conclusion, the MS251 chainsaw from Stihl is a powerful and reliable tool designed for a range of cutting tasks. By understanding its technical features and following proper operational guidelines, you can make the most of this versatile tool while ensuring safety and efficiency. Whether you’re a seasoned chainsaw user or just starting, the MS251 is a valuable addition to your equipment lineup.