Welcome to the STIHL MS 250 instruction manual. This guide provides essential information for safe and effective operation‚ maintenance‚ and troubleshooting of your chainsaw. Read carefully for optimal performance and safety.
1.1 Overview of the Manual
This manual provides comprehensive guidance for the STIHL MS 250 chainsaw‚ covering safety precautions‚ operational instructions‚ and maintenance tips. It includes detailed sections on assembly‚ technical specifications‚ and troubleshooting common issues. The manual emphasizes proper usage to ensure safety and optimal performance. Adhering to the instructions is crucial for both operator safety and the longevity of the chainsaw.
1.2 Importance of Following the Instructions
Adhering to the manual ensures safe operation‚ optimal performance‚ and longevity of the STIHL MS 250. Proper techniques prevent accidents‚ while maintenance guidelines keep the chainsaw functioning efficiently. Ignoring instructions can lead to equipment damage or personal injury‚ emphasizing the necessity of following all provided guidelines carefully.
Safety Guidelines
Ensure safe operation by following all guidelines to prevent injuries. Always wear PPE and be aware of kickback risks. Safety is paramount when using the STIHL MS 250.
2.1 General Safety Precautions
Always wear personal protective equipment‚ including gloves‚ safety glasses‚ and hearing protection. Ensure the chain brake is engaged when starting. Avoid cutting near bystanders and keep loose clothing tied back. Maintain a firm grip and stay balanced. Be cautious of electrical wires and overhead obstacles. Never operate the chainsaw while fatigued or under the influence of alcohol. Proper handling prevents accidents and ensures safe operation.
2.2 Personal Protective Equipment (PPE)
Always wear approved protective gear‚ including a helmet with face shield‚ safety glasses‚ ear protection‚ gloves‚ and chainsaw chaps. Ensure proper fit and coverage to minimize injury risk. PPE is essential for protecting against flying debris‚ cuts‚ and noise exposure. Adhere to safety standards and manufacturer recommendations for optimal protection during operation. Safety gear is your first line of defense against accidents and injuries.
2.3 Kickback Prevention
Kickback is a sudden‚ violent reaction of the chainsaw. To prevent it‚ always use STIHL reduced kickback bars and low-kickback chains as specified in the manual. Maintain sharp chain cutters and avoid cutting small-diameter wood. Keep the chain properly tensioned and never touch the chain to the ground. Use proper cutting techniques and avoid overreaching. Kickback can cause serious injury‚ so stay alert and follow safety guidelines at all times to minimize risks.
Starting the Chainsaw
To start the STIHL MS 250‚ ensure the chain brake is engaged‚ set the ignition switch to “on‚” and use the choke for cold starts. Pull the starter rope firmly until the engine runs. Always follow the manual’s starting procedure for safe and efficient operation.
3.1 Pre-Start Checks
Before starting the STIHL MS 250‚ ensure the chain brake is engaged and the chain is properly tensioned. Check the chain for sharpness and lubrication. Verify that all safety features‚ such as the chain brake and muffler‚ are in good working condition. Wear personal protective equipment‚ including gloves‚ safety glasses‚ and sturdy footwear. Ensure the area is clear of debris and obstacles for safe operation.
3.2 Starting Procedure
To start the STIHL MS 250‚ engage the chain brake and ensure the chain is in the correct position. Set the ignition switch to the “on” position and pull the choke lever fully out. Hold the handle firmly‚ place your foot on the rear handle‚ and pull the starter rope slowly until resistance is felt. Pull sharply to start the engine. Allow the engine to warm up for a few seconds before disengaging the chain brake.
Operating the Chainsaw
Operating the STIHL MS 250 requires maintaining control‚ using proper cutting techniques‚ and ensuring safety. Always grip firmly‚ keep a stable stance‚ and manage the saw’s movement carefully for efficient and safe cutting;
4.1 Basic Cutting Techniques
Mastering basic cutting techniques with the STIHL MS 250 ensures efficient and safe operation. Start with proper stance‚ grip the saw firmly‚ and maintain control. For vertical cuts‚ use a steady‚ downward motion. Horizontal cuts require precise alignment and consistent pressure. Always engage the chain brake when not cutting. Practice these techniques to achieve clean‚ accurate results while minimizing fatigue and risk of injury.
4.2 Throttle Control and Chain Brake
Proper use of the throttle and chain brake is crucial for safe operation. The throttle controls the engine speed‚ allowing precise control during cuts. Always engage the chain brake when starting or moving with the saw. The brake stops the chain in milliseconds‚ preventing accidental cuts. Use the throttle smoothly‚ avoiding sudden accelerations. Return to idle after use for optimal safety and equipment longevity.
Maintenance and Servicing
Regular maintenance ensures optimal performance and longevity of your STIHL MS 250. Clean the air filter‚ check spark plugs‚ and ensure proper chain lubrication. Always use original STIHL parts for reliability.
5.1 Daily Maintenance Tasks
Perform daily checks to ensure your STIHL MS 250 runs smoothly. Clean the air filter‚ inspect the chain for wear‚ and lubricate the bar. Check chain tension and sharpen as needed. Ensure all bolts and screws are tightened. Regularly clean the chainsaw’s exterior and internal components to prevent dust and debris buildup. Always use STIHL-approved lubricants and tools for optimal performance.
5.2 Regular Servicing Requirements
Regular servicing is crucial for maintaining the performance and longevity of your STIHL MS 250. Replace the air filter every 50 hours of operation and clean the cooling system to prevent overheating. Check and clean the muffler regularly to ensure proper engine function. Sharpen or replace the chain as needed‚ and lubricate the bar and chain frequently. Use only STIHL-approved parts and follow the manual’s guidelines for optimal results.
Chain and Bar Maintenance
Proper chain and bar maintenance ensures optimal performance and safety. Regularly inspect and sharpen the chain‚ check tension‚ and clean the bar to prevent wear and damage.
6.1 Chain Sharpening and Tensioning
Sharpening the chain regularly ensures efficient cutting performance. Use a STIHL file or sharpening tool to maintain the correct angle and depth. Proper tensioning prevents sagging or breakage. Check the tensioning screw and adjust as needed to keep the chain snug but not overly tight. Lubricate the chain after sharpening to reduce friction and extend its lifespan. Always follow safety guidelines during these procedures.
6.2 Bar and Chain Lubrication
Regular lubrication of the bar and chain is crucial for optimal performance. Use STIHL chain oil to reduce friction and prevent wear. Apply oil to the chain and bar rails before use and during long cutting sessions. Proper lubrication ensures smooth operation‚ reduces overheating‚ and extends the life of both the chain and bar. Always use the recommended oil type for best results.
Troubleshooting Common Issues
Identify and resolve common problems like engine startup issues‚ chain malfunction‚ or reduced performance. Refer to the manual for step-by-step solutions to ensure safe and effective operation.
7.1 Engine Not Starting
If the engine fails to start‚ check the ignition switch‚ fuel level‚ and air filter. Ensure the chain brake is disengaged and the choke is properly set. Verify that the fuel mix is correct and the spark plug is functioning. Consult the manual for detailed troubleshooting steps to resolve the issue efficiently. Always follow safety guidelines during diagnosis.
7.2 Chain Malfunction
A malfunctioning chain can occur due to improper tension‚ lack of lubrication‚ or debris. Check the chain tension and adjust as needed. Ensure the bar and chain are well-lubricated. Inspect for damage or wear and replace if necessary. Clean the chain brake and ensure it functions correctly. Proper maintenance and inspection can prevent issues and ensure smooth operation. Always refer to the manual for specific guidance.
Technical Specifications
The STIHL MS 250 features a powerful 2-stroke engine with 45 cm³ displacement‚ delivering 3.1 HP. It includes a 14-inch bar and a 3/8″ chain pitch for efficient cutting.
8.1 Engine Details
The STIHL MS 250 is equipped with a 2-stroke gasoline engine‚ producing 3.1 horsepower. It has a 45 cm³ displacement and operates at a maximum speed of 10‚000 RPM. The engine is designed for high efficiency and reliable performance‚ requiring a gasoline-oil mixture as specified in the manual for optimal functionality and longevity of the chainsaw.
8.2 Chain and Bar Specifications
The STIHL MS 250 features a 3/8″ pitch chain with a 0.325″ gauge. The bar length options are 14″ (35 cm) or 16″ (40 cm). The chain is designed for low kickback and optimal cutting performance. Always use genuine STIHL parts for compatibility and safety. Proper bar and chain configuration ensures efficient operation and reduces wear‚ as detailed in the manual.
Storage and Transportation
Store the chainsaw in a dry‚ cool place‚ away from direct sunlight. Transport securely‚ ensuring the chain is clean and properly secured to prevent movement and damage.
9.1 Proper Storage Conditions
Store the STIHL MS 250 in a dry‚ cool place‚ away from direct sunlight and moisture. Keep it out of reach of children and ensure the chain is clean and well-lubricated. Avoid storing in extreme temperatures or humid environments to maintain optimal performance and longevity of the chainsaw and its components.
9.2 Transportation Safety
Always transport the STIHL MS 250 in a secure‚ upright position‚ ensuring the chain brake is engaged. Use a suitable vehicle or carrying case to prevent movement and damage. Keep the chainsaw away from direct contact with fuel and flammable materials. Never leave the saw unattended during transport‚ and ensure it is clean and well-maintained to avoid accidents. Follow all local safety regulations.
Following this manual ensures safe and efficient use of the STIHL MS 250. Regular maintenance and proper operation maximize performance and longevity. Consult professionals for unresolved issues.
10.1 Final Tips for Optimal Performance
For the best results with your STIHL MS 250‚ always use STIHL-branded chains and bars. Maintain the chain sharpness and proper tension. Regularly clean the air filter and check the chain brake functionality. Store the saw in a dry place and avoid using it in extreme weather conditions. Follow these tips to ensure longevity and efficiency.
10.2 Importance of Regular Maintenance
Regular maintenance is crucial for the STIHL MS 250 to ensure reliability and performance. Daily checks include inspecting the chain‚ cleaning filters‚ and lubricating moving parts. Schedule regular servicing for engine tuning and spark plug replacement. Proper care extends the lifespan of your chainsaw and prevents unexpected breakdowns‚ ensuring safe and efficient operation over time.