The STIHL MS 250 is a powerful and reliable petrol-powered chainsaw designed for efficient cutting in various applications. Ideal for professionals and homeowners‚ it offers excellent performance and durability.

1.1 Overview of the STIHL MS 250

The STIHL MS 250 is a high-performance chainsaw engineered for demanding tasks‚ making it suitable for both professionals and homeowners. Powered by a robust 2-stroke petrol engine‚ it delivers reliable power for cutting firewood‚ pruning‚ and small to medium logging tasks. With a compact and lightweight design‚ the MS 250 is easy to maneuver‚ reducing operator fatigue during extended use. It features a 45.4 cc engine‚ offering a balance of power and portability. The chainsaw is equipped with a high-quality guide bar and chain‚ ensuring precise and efficient cutting. Its ergonomic design‚ including a comfortable handle and intuitive controls‚ enhances user experience. Whether for heavy-duty jobs or everyday tasks‚ the STIHL MS 250 is a versatile tool that combines durability‚ reliability‚ and ease of maintenance‚ making it a popular choice for various applications.

Safety Precautions

Safety is paramount when operating the STIHL MS 250. Always follow guidelines to minimize risks‚ ensuring proper handling and awareness of potential hazards during operation and maintenance.

2.1 General Safety Guidelines

Always read and understand the instruction manual before using the STIHL MS 250. Ensure you are familiar with all controls and components. Wear appropriate clothing and keep loose items secure. Maintain a firm grip and proper stance to control the chainsaw effectively. Be aware of your surroundings‚ avoiding obstacles and bystanders. Never operate the saw in poor visibility or adverse weather conditions. Ensure the chainsaw is in good working condition‚ with a sharp chain and proper chain tension. Keep children and pets away from the work area. Follow all local regulations and safety standards. Never operate the chainsaw while fatigued or under the influence of alcohol or drugs. Always plan your cutting strategy to avoid accidents and ensure a safe working environment;

2.2 Personal Protective Equipment (PPE)

Wearing appropriate Personal Protective Equipment (PPE) is essential when operating the STIHL MS 250 to minimize the risk of injury. Always wear a helmet with a face shield or safety glasses to protect your eyes and head from debris. Hearing protection‚ such as earplugs or earmuffs‚ is necessary to prevent noise-induced hearing damage. Durable gloves improve grip and protect your hands from cuts and abrasions. Wear long‚ sturdy pants made of cut-resistant material‚ such as chainsaw chaps‚ to safeguard your legs. Steel-toe boots with good traction are also vital to protect your feet. Ensure all PPE meets local safety standards and is in good condition. Proper use of PPE significantly reduces the risk of accidents and ensures safe operation of the chainsaw.

2.3 Safe Handling and Operating Tips

When handling the STIHL MS 250‚ always conduct a pre-start safety check to ensure all components are functioning properly. Maintain proper posture to avoid strain and maintain control over the saw. Be fully aware of your surroundings‚ including the presence of bystanders and potential obstacles in the cutting area. Operate the chainsaw at a steady‚ comfortable pace to prevent fatigue and maintain precision. Ensure the work area is well-lit to enhance visibility and reduce the risk of accidents. Exercise extra caution when cutting in adverse weather conditions‚ such as rain or strong winds‚ as these can increase the hazard level; Use the chainsaw exclusively for its intended purposes and avoid modifying it for other tasks. Secure any loose jewelry or clothing that could get caught in the moving parts. Keep the area free from flammable materials to prevent fire hazards. Stay hydrated and take regular breaks to avoid fatigue‚ ensuring you remain alert and focused during operation.

Technical Specifications

The STIHL MS 250 features a powerful 46.9 cc petrol engine‚ weighing 4.9 kg without the bar and chain. It supports bar lengths up to 40 cm and uses a 1.6 mm chain pitch.

3.1 Engine Specifications

The STIHL MS 250 is equipped with a high-performance‚ two-stroke petrol engine. It features a displacement of 46.9 cm³ and delivers a maximum power output of 3.0 kW at 9‚500 rpm. The engine is designed with a compact combustion chamber and a forged piston for improved efficiency and durability. It utilizes STIHL’s proven 2-MIX engine technology‚ which reduces fuel consumption by up to 20% and emissions by up to 50% compared to traditional two-stroke engines. The engine operates on a mixture of petrol and two-stroke oil‚ with a recommended ratio of 50:1. It also includes an electronic ignition system for reliable starting and smooth operation. The air filter is designed for easy access and maintenance‚ ensuring optimal performance in various working conditions.

3;2 Cutting Equipment Details

The STIHL MS 250 features a high-quality cutting system designed for precision and efficiency. The chainsaw is equipped with a robust guide bar made from durable materials‚ ensuring longevity and resistance to wear. The chain is designed with advanced tooth geometry‚ providing excellent cutting performance and minimal kickback. The standard chain pitch is 0.325″‚ with a 0.050″ gauge‚ making it suitable for a wide range of cutting tasks. The bar length options include 14″‚ 16″‚ and 18″‚ allowing users to choose the right size for their needs. The chain is pre-sharpened and ready for use‚ delivering consistent results. For optimal performance‚ the bar and chain are designed to work seamlessly with the saw’s power output. Regular maintenance of the cutting equipment is essential to maintain its efficiency and safety.

3.3 Weight and Dimensions

The STIHL MS 250 has a dry weight of approximately 4.9 kg (10.8 lbs) without the bar and chain‚ making it lightweight and easy to maneuver. Its compact design features dimensions of 35 cm (13.8 inches) in length‚ 25 cm (9.8 inches) in width‚ and 26 cm (10.2 inches) in height‚ ensuring excellent portability and control. The balanced proportions of the saw allow for efficient handling‚ reducing fatigue during extended use. These measurements make the MS 250 ideal for both professional and residential applications‚ where ease of use and precision are essential. Always refer to the official specifications for precise measurements‚ as slight variations may occur based on configuration and accessories.

Assembly and Preparation

The STIHL MS 250 requires careful unpacking and inventory of all components. Assemble the bar and chain‚ ensuring proper alignment and tension. Prepare the chainsaw by checking all safety features and ensuring correct chain tension for optimal performance.

4.1 Unpacking and Inventory Check

When you receive your STIHL MS 250‚ carefully unpack the chainsaw and all included components. Ensure no damage occurred during shipping by inspecting the unit and accessories. Verify that all items listed in the manual are present‚ including the chainsaw‚ guide bar‚ saw chain‚ and tools. Check for any visible damage or defects on the machine and its parts. If any discrepancies or damage are found‚ contact your dealer or STIHL customer support immediately. Take this opportunity to familiarize yourself with the components and their purposes. Read through the manual to understand the assembly process and safety guidelines before proceeding. Properly organize the parts to avoid misplacement and ensure a smooth assembly process.

4.2 Assembling the Bar and Chain

To assemble the bar and chain‚ start by ensuring all components are clean and free from debris. Attach the guide bar to the chainsaw by aligning it with the mounting studs and securing it with the provided nuts. Tighten the nuts evenly to avoid misalignment. Next‚ loop the chain around the sprocket‚ ensuring the cutting teeth face the correct direction. Hook the chain onto the bar‚ making sure it sits properly in the groove. Use the tensioning screw to tighten the chain‚ leaving a small amount of slack for safe operation. Finally‚ test the chain tension by pulling it gently; it should not sag excessively but should still move freely. Always refer to the manufacturer’s specifications for proper alignment and tensioning to ensure optimal performance and safety.

4.3 Preparing the Chainsaw for Use

Before operating the STIHL MS 250‚ ensure all components are properly prepared. Check the chain brake‚ throttle‚ and stop switch for smooth operation. Lubricate the bar and chain with STIHL chain lube to reduce wear. Adjust the chain tension to the recommended setting using the side-access tensioner. Fill the fuel tank with a 50:1 ratio of petrol and STIHL HP Ultra oil. Avoid overfilling to prevent spills. Start with a few pulls of the choke to prime the engine. Always perform a final pre-start check: ensure the chain is sharp‚ the muffler is clear‚ and the saw is free from damage. These steps ensure optimal performance‚ safety‚ and longevity of the chainsaw.

• Check all controls for proper function.
• Apply chain lube and adjust tension.
• Refuel with the correct petrol-oil mixture.
• Prime the engine and inspect the chain and muffler.

Operating the Chainsaw

Operating the STIHL MS 250 requires attention to safety‚ proper technique‚ and environmental conditions. Always maintain control‚ use correct cutting methods‚ and avoid operating in extreme weather or tight spaces.

5.1 Starting the Engine

To start the STIHL MS 250‚ ensure the chainsaw is on a flat‚ stable surface with the chain brake engaged. Move to an open‚ well-ventilated area away from flammable materials. Place your foot on the rear handle for stability and grasp the front handle firmly. Press the primer bulb 4-6 times to draw fuel into the carburetor. Set the choke to the “start” position and pull the starter rope smoothly until resistance is felt. Release the rope‚ then pull it again until the engine coughs. Move the choke to the “run” position and pull the starter rope firmly until the engine starts. Allow the saw to warm up for a few seconds before use. Always refer to the safety guidelines and ensure the chain is stopped before starting.

• Ensure the chain brake is engaged before starting.
• Use the primer bulb correctly to avoid flooding the engine.
• Check the chain tension and bar oil level before operation.

Avoid over-revving the engine during startup‚ and never start the chainsaw near open flames or sparks. If the engine does not start after several attempts‚ check the fuel quality and air filter condition. For persistent issues‚ consult a certified STIHL service technician.

5.2 Cutting Techniques and Best Practices

To achieve optimal performance with the STIHL MS 250‚ employ proper cutting techniques. Always maintain a firm‚ controlled grip and stance‚ ensuring balance and visibility. For horizontal cuts‚ use a ripping technique‚ while vertical cuts benefit from precise‚ controlled swings. Avoid cutting materials beyond the chain’s capacity to prevent stalling. Keep the chain sharp‚ as dull chains require more force and increase wear. Use the “pulling” motion for cross-cutting and the “pushing” motion for ripping. Never cut with the tip of the bar‚ as it can lead to loss of control. Maintain consistent‚ steady pressure and avoid over-revving the engine. For larger logs‚ make relief cuts to prevent binding. Always plan your cuts to minimize waste and ensure safety. Proper techniques enhance efficiency‚ safety‚ and tool longevity.

5.3 Operating Tips for Efficiency and Safety

For efficient and safe operation of the STIHL MS 250‚ plan cuts carefully to minimize waste and avoid obstacles. Maintain a firm grip on the handles and keep the chainsaw close to your body for better control. Always cut on the pulling stroke‚ as this maximizes cutting efficiency and reduces strain on the engine. Avoid overloading the saw by applying too much pressure‚ as this can lead to poor performance or damage. Keep the chain sharp‚ as a dull chain increases cutting time and energy consumption. Use proper cutting techniques‚ such as horizontal and vertical cuts‚ depending on the task. Stay alert and avoid distractions while operating the saw. Regularly inspect the work area for hazards like loose debris or uneven terrain. Follow all safety guidelines and maintain a safe distance from bystanders.

Maintenance and Upkeep

Regular maintenance ensures the STIHL MS 250 operates at peak performance. Tasks include cleaning the air filter‚ checking chain tension‚ and lubricating moving parts for reliable operation and longevity.

6.1 Routine Maintenance Tasks

Regular maintenance is essential to ensure optimal performance and longevity of the STIHL MS 250. Routine tasks include checking and cleaning the air filter‚ inspecting the chain for wear‚ and ensuring proper chain tension. Lubricating the bar and chain is crucial to prevent friction and overheating. Additionally‚ the muffler and spark arrestor should be cleaned regularly to maintain proper engine function; Always check the chain brake for proper operation and inspect the cutting equipment for damage or dullness. Sharpen the chain as needed and replace worn or damaged parts promptly. Cleaning the saw‚ especially after use in dirty conditions‚ helps prevent corrosion and ensures smooth operation. Regularly check the fuel and oil levels‚ and ensure the correct types are used. Finally‚ sharpening and maintaining the chain ensures efficient cutting and safety while operating the saw.

6.2 Chain Maintenance and Sharpening

Regular chain maintenance is crucial for optimal performance and safety. Always check the tension before use‚ ensuring it’s tight enough to prevent sagging but not overly tight. Clean the chain regularly to remove dirt and debris‚ which can dull the cutters. Sharpening should be done with a STIHL file and guide to maintain the correct angle and depth. Dull cutters increase wear and reduce efficiency. Use a round file for the depth gauges to ensure proper clearance. Sharpening frequency depends on usage‚ but signs of dullness include uneven cutting and increased vibration. Properly maintained chains improve cutting efficiency and reduce the risk of kickback. Always refer to the manual for specific sharpening techniques and tool recommendations.

6.3 Engine Maintenance

Regular engine maintenance is crucial for the optimal performance and longevity of the STIHL MS 250 chainsaw. Start by cleaning or replacing the air filter as specified in the manual to ensure proper airflow and combustion. Check the spark plug for wear or fouling and replace it if necessary. Use only high-quality two-stroke engine oil‚ and ensure the oil-to-fuel mixture is prepared accurately according to the manufacturer’s guidelines. Inspect the muffler for damage or blockages and clean it periodically to maintain exhaust flow. Additionally‚ monitor the engine’s performance and address any unusual sounds or vibrations promptly. Routine servicing by an authorized STIHL dealer is recommended to maintain warranty validity and ensure the chainsaw operates safely and efficiently.

6.4 Storage and Transportation Tips

For optimal preservation and safety‚ store the STIHL MS 250 in a cool‚ dry place away from direct sunlight. Drain the fuel tank or use a fuel stabilizer to prevent degradation. Always use a STIHL-approved storage container to protect the chainsaw from dust and moisture. When transporting‚ secure the chainsaw in a protective case or bag to avoid damage. Ensure the chain is clean and free of debris before storage. Never leave the chainsaw in a vehicle for extended periods‚ as heat can cause damage. Always transport the saw with the chain brake engaged and the muffler covered to prevent overheating. Follow local regulations for transporting petrol-powered equipment‚ and keep it out of reach of children.

• Store in a dry‚ well-ventilated area.
• Use a protective case during transport.
• Drain fuel or use stabilizer for long-term storage.

Troubleshooting Common Issues

Troubleshooting common issues with the STIHL MS 250 involves identifying problems like engine malfunction‚ chain dullness‚ or fuel issues. Always refer to the manual for guidance and solutions.

7.1 Identifying and Solving Common Problems

Common issues with the STIHL MS 250 include the chainsaw not starting‚ poor cutting performance‚ or excessive vibration. If the engine fails to start‚ check the fuel level‚ spark plug‚ and air filter. A dull chain can be resolved by sharpening or replacing it. For vibration issues‚ ensure the chain is properly tensioned and the guide bar is undamaged. If the chainsaw overheats‚ allow it to cool before continuing. Regularly cleaning the air filter and checking for fuel line blockages can prevent many problems. Always consult the manual for specific diagnostic steps and solutions. Addressing issues promptly ensures optimal performance and extends the lifespan of the chainsaw.

Warranty and Customer Support

The STIHL MS 250 is backed by a comprehensive warranty program‚ ensuring coverage for defects in materials and workmanship. Customers can contact STIHL support for assistance‚ parts‚ and service inquiries‚ with dedicated representatives available to address concerns promptly and efficiently‚ ensuring optimal satisfaction and product performance.

8.1 Warranty Overview

The STIHL MS 250 is covered by a comprehensive warranty program designed to protect your investment. The standard warranty period for the chainsaw is two years for consumer use and one year for professional or rental applications. This warranty covers defects in materials and workmanship under normal use and maintenance conditions. During the warranty period‚ STIHL will repair or replace defective parts at no cost to the user‚ provided the product has been properly maintained and used in accordance with the instruction manual. The warranty does not cover damage caused by misuse‚ neglect‚ or normal wear and tear. For warranty claims‚ contact an authorized STIHL dealer with proof of purchase and a detailed description of the issue.

8.2 Contacting Customer Support

For any inquiries‚ technical assistance‚ or service-related matters‚ STIHL provides comprehensive customer support. You can contact STIHL customer support through their official website‚ where you’ll find a dedicated section for support inquiries. Additionally‚ you can reach out via phone or email using the contact details provided in the manual or on the STIHL website. Ensure to have your chainsaw’s model number and serial number ready for faster assistance. STIHL also has a network of authorized service centers worldwide‚ where trained professionals can address your concerns. For warranty-related issues‚ refer to the warranty overview section. Always use genuine STIHL parts and services to maintain your chainsaw’s performance and warranty validity. Customer support is available during business hours‚ and they strive to resolve issues promptly; Remember to consult the manual or contact authorized dealers for accurate guidance.

The STIHL MS 250 is a reliable and efficient chainsaw for various tasks. Always follow safety guidelines‚ maintain it regularly‚ and operate with care for optimal performance and longevity.

9.1 Final Thoughts and Reminders

Always prioritize safety‚ follow proper techniques‚ and maintain your STIHL MS 250 regularly for optimal performance. Store the chainsaw securely‚ and keep it out of reach of children. Ensure all safety features are functioning correctly before use. Regularly check and sharpen the chain‚ and monitor the bar for wear. Properly mix fuel and oil‚ and avoid using stale fuel to prevent engine issues. Clean or replace air and fuel filters as needed to maintain engine efficiency. Store the saw in a dry‚ cool place during extended periods of inactivity. Refer to the warranty for coverage details‚ and contact STIHL support for any assistance. By following these guidelines‚ you will extend the life of your chainsaw and ensure safe‚ effective operation. Happy sawing!