Overview of the STIHL MS 251 Chainsaw
The STIHL MS 251 is a powerful chainsaw with a high-torque 2-MIX engine‚ designed for efficient cutting. It features an anti-vibration system and ergonomic design‚ making it ideal for firewood cutting and small tree felling.
1.1 Key Features and Specifications
The STIHL MS 251 chainsaw is equipped with a high-torque 2-MIX engine‚ designed for efficient fuel consumption and reduced emissions. It features an Ematic chain lubrication system for consistent chain oiling and reduced wear. The chainsaw includes a single-lever master control‚ combining start‚ choke‚ throttle‚ and stop functions for easy operation. With a robust design and ergonomic handle‚ it excels in cutting firewood‚ felling small trees‚ and pruning. The anti-vibration system minimizes user fatigue‚ while the Quick Chain Tensioning system ensures fast and secure chain adjustments. Ideal for professionals and homeowners seeking reliable performance.
1.2 Importance of Using Genuine STIHL Parts
Using genuine STIHL parts ensures optimal performance‚ safety‚ and longevity of your MS 251 chainsaw. These parts are specifically designed to meet precise engineering standards‚ guaranteeing reliability and compatibility. Genuine components maintain the saw’s efficiency and power‚ reducing wear and tear. They also ensure compliance with safety features‚ such as the chain brake system. Additionally‚ using authentic parts preserves your chainsaw’s warranty and prevents potential damage from non-OEM alternatives. For consistent performance and adherence to STIHL’s quality benchmarks‚ always choose genuine parts for maintenance and repairs.
Main Components of the STIHL MS 251
The STIHL MS 251 features a robust engine‚ carburetor‚ and advanced chain and bar system. It also includes an oil pump‚ lubrication system‚ and precise throttle control for optimal performance.
2.1 Engine and Carburetor
The STIHL MS 251 is powered by a high-torque 2-MIX engine‚ designed for efficient fuel consumption and reduced emissions. The engine features a displacement of 45.4 cc and delivers robust performance for cutting firewood and felling small trees. The carburetor ensures precise fuel delivery‚ optimizing engine efficiency and reliability. Regular maintenance‚ such as cleaning or replacing the air filter and spark plug‚ is essential for sustained performance. Using genuine STIHL parts for the engine and carburetor ensures compatibility and maintains the saw’s operational excellence. Proper tuning of the carburetor by an authorized dealer is recommended to avoid performance issues.
2.2 Chain and Bar
The STIHL MS 251 chainsaw features a high-quality chain and bar system designed for optimal cutting performance. The chain is typically a 63-PM3 type‚ known for its durability and sharpness retention. The bar length can vary‚ with common options ranging from 16 to 20 inches‚ accommodating different cutting tasks. Proper chain tension and regular sharpening are essential to maintain efficiency and safety. The ematic lubrication system ensures the chain and bar receive adequate oil‚ reducing wear and tear. Using genuine STIHL parts for the chain and bar ensures compatibility and optimal performance. Always refer to the parts list for correct specifications.
2.3 Oil Pump and Lubrication System
The STIHL MS 251 chainsaw is equipped with a reliable oil pump and lubrication system to ensure proper chain and bar lubrication. The ematic system automatically delivers the correct amount of oil‚ minimizing wear and tear. The oil pump‚ part number 1143 640 3201‚ works seamlessly with the oil tank and hoses to maintain consistent lubrication. Regular checks and maintenance of the oil system are crucial for optimal performance. Using genuine STIHL parts ensures compatibility and reliability. The system’s efficiency reduces chain friction‚ extending the life of both the chain and bar. Proper lubrication also enhances cutting efficiency and safety. Always refer to the parts list for accurate replacement components.
2.4 Throttle Control and Brake System
The STIHL MS 251 features a responsive throttle control and a reliable brake system for safe operation. The throttle control‚ part of the single-lever master control‚ allows easy adjustment of engine speed. The chain brake system activates instantly‚ stopping the chain within fractions of a second to prevent accidents. This system is essential for operator safety‚ especially during kickback situations. Regular maintenance of the brake and throttle components‚ such as cleaning and lubricating‚ ensures optimal performance. Genuine STIHL parts‚ like the brake lever and throttle cable‚ are recommended for reliability and safety. Always refer to the parts list for correct replacements.
Maintenance and Repair
Regular maintenance is essential for the STIHL MS 251 to ensure optimal performance. This includes chain lubrication‚ sharpening‚ and tensioning. Genuine STIHL parts guarantee safety and efficiency.
3.1 Regular Maintenance Schedule
Regular maintenance of the STIHL MS 251 chainsaw is crucial for optimal performance and longevity. The schedule includes daily checks of chain tension‚ lubrication levels‚ and air filter cleanliness. Weekly‚ inspect the chain for wear and sharpen as needed. Every 50 hours‚ clean or replace the air filter and check the muffler for damage. Annually‚ replace the fuel filter and spark plug. Refer to the STIHL MS 251 manual for detailed instructions. Using genuine STIHL parts ensures compatibility and reliability‚ maintaining the saw’s efficiency and safety; Proper adherence to this schedule prevents breakdowns and extends the tool’s lifespan.
3.2 Common Repairs and Troubleshooting
Common repairs for the STIHL MS 251 include addressing issues like poor engine performance‚ chain tension problems‚ or lubrication system malfunctions. Troubleshooting often starts with checking the air filter for dirt or damage‚ as a clogged filter can restrict airflow and reduce power. Chain-related issues‚ such as improper tension or dull cutters‚ can be resolved by sharpening or replacing the chain. Additionally‚ ensuring proper fuel mixture and spark plug condition is essential for reliable engine operation. Regularly cleaning or replacing these components can prevent breakdowns. Always refer to the STIHL MS 251 parts list for genuine replacements to maintain performance and safety.
Ordering Spare Parts
To order spare parts for the STIHL MS 251‚ consult the official parts list PDF for accurate identification. Purchase genuine components from authorized STIHL dealers or trusted online retailers.
4.1 How to Read the Parts List
The STIHL MS 251 parts list PDF provides a detailed catalog of components. Each part is listed with an item number‚ quantity‚ and description‚ ensuring accurate identification. The document often includes exploded diagrams to visually locate parts within the saw. Users can cross-reference these diagrams with the written list to confirm compatibility. When ordering‚ match the item number from the list to the desired part. Always verify the compatibility of the part with your specific MS 251 model before purchasing. This ensures proper fitment and functionality. Genuine STIHL parts are recommended for optimal performance.
4.2 Authorized Dealers and Online Sources
For genuine STIHL MS 251 parts‚ purchase from authorized dealers or STIHL’s official website. These sources guarantee authenticity and warranty compliance. Online retailers like STIHL’s official partners offer convenient shopping with detailed parts lists and exploded diagrams. Local dealers provide expert advice and direct access to MS 251-specific components. Always verify the seller’s authorization to ensure STIHL-approved quality. This maintains performance and safety standards. Genuine parts are essential for optimal functionality and longevity of your chainsaw.
Safety Guidelines
Always wear protective equipment‚ including gloves‚ safety glasses‚ and hearing protection. Use the chain brake and follow proper cutting techniques to minimize kickback risks. Ensure a firm grip and maintain a safe working distance from others. Regularly inspect the saw for damage or wear‚ especially the chain and brake system. Properly sharpen the chain and keep it well-lubricated to avoid accidents. Never operate the saw in unsafe conditions or while fatigued. Adhere to all warnings and guidelines in the STIHL MS 251 user manual.
5.1 Operating Safety Precautions
Operating the STIHL MS 251 requires strict adherence to safety protocols. Always wear protective gear‚ including safety glasses‚ gloves‚ and hearing protection. Ensure the chain brake is functioning properly and engage it when starting or moving the saw. Maintain a firm grip and avoid loose clothing that could get caught. Keep bystanders at a safe distance and never cut above shoulder height. Be aware of kickback zones and use proper cutting techniques to minimize risks. Regularly inspect the chain for sharpness and tension‚ as a dull or loose chain increases accident chances. Follow all guidelines in the user manual for safe operation.
5.2 Protective Equipment Recommendations
When operating the STIHL MS 251‚ wear protective equipment to minimize injury risks. Essential gear includes safety glasses with a face shield‚ hearing protection‚ and durable gloves for grip and hand safety. Chainsaw-specific protective chaps or pants made of cut-resistant material are highly recommended to protect legs; Steel-toe boots with good traction are also crucial. Ensure all gear fits properly and meets safety standards. Regularly inspect equipment for wear and tear‚ and replace items as needed. Proper attire and gear significantly reduce the risk of injury during chainsaw operation. Always prioritize safety when working with power tools like the MS 251.
STIHL MS 251 User Manual
The STIHL MS 251 User Manual provides detailed instructions‚ parts lists‚ and diagrams for optimal operation. It includes sections on maintenance‚ repairs‚ and safety precautions.
6.1 Understanding the Manual Structure
The STIHL MS 251 User Manual is structured to guide users through safe operation‚ maintenance‚ and repair. It begins with a table of contents for easy navigation‚ followed by detailed sections on safety precautions‚ operating instructions‚ and troubleshooting. The manual includes an exploded parts diagram‚ which visually identifies components‚ and a parts list with corresponding numbers. Maintenance schedules and repair procedures are outlined‚ along with specifications for fuel‚ oil‚ and chain types. Additionally‚ the manual provides clear instructions for starting procedures‚ chain tensioning‚ and brake system operation. This comprehensive structure ensures users can quickly find the information they need.
6.2 Detailed Parts List and Diagrams
The STIHL MS 251 parts list is accompanied by detailed diagrams that visually represent each component of the chainsaw. These diagrams‚ often in exploded view format‚ allow users to identify parts accurately. The list includes item numbers‚ quantities‚ and descriptions for components like the oil pump‚ chain‚ bar‚ and throttle control. Users can cross-reference these diagrams with the parts list to locate and order genuine STIHL replacement parts easily. This resource is essential for maintenance‚ repairs‚ and ensuring compatibility when purchasing spare parts. The clear labeling and organization make it user-friendly for both professionals and DIY enthusiasts.
Environmental Considerations
Proper disposal of old STIHL MS 251 parts ensures environmental responsibility. Eco-friendly lubrication options and sustainable practices are recommended to minimize ecological impact during maintenance and operation.
7.1 Proper Disposal of Old Parts
Proper disposal of old STIHL MS 251 parts is crucial for environmental protection. Dispose of metal and plastic components responsibly through recycling centers or authorized facilities. Always check local regulations for hazardous materials like oil or fuel. Separate recyclable materials from non-recyclable ones to minimize waste. STIHL encourages eco-friendly practices to reduce environmental impact. Never dispose of parts in landfills or waterways‚ as they can harm ecosystems. Use certified recycling programs to ensure sustainable disposal of chainsaw components. This helps maintain a greener planet while adhering to environmental guidelines.
7.2 Eco-Friendly Lubrication Options
The STIHL MS 251 supports eco-friendly lubrication options to minimize environmental impact. The Ematic chain lubrication system is designed to reduce oil consumption while maintaining optimal chain performance. Use biodegradable or low-emission chain oils to align with eco-conscious practices. Always refer to the STIHL MS 251 manual for recommended oil types. Proper lubrication not only extends the life of your chainsaw but also reduces waste. Eco-friendly lubricants help protect the environment while ensuring reliable operation. Choose sustainable options to promote greener forestry and landscaping practices.
Warranty and Support
The STIHL MS 251 is backed by a comprehensive warranty covering parts and repairs for certified products. Contact authorized dealers or STIHL support for assistance.
8.1 Warranty Coverage for Parts
The STIHL MS 251 warranty ensures genuine parts are covered for defects in materials and workmanship. Coverage typically lasts for a specified period from purchase. Registration with STIHL may be required to activate warranty benefits. Authorized dealers handle warranty claims‚ providing repair or replacement services. Using non-genuine parts may void coverage. Regular maintenance using STIHL parts is recommended to uphold warranty validity. For detailed terms‚ refer to the product manual or contact STIHL support. This ensures optimal performance and extends the lifespan of your chainsaw.
8.2 Contacting STIHL Support
For assistance with the STIHL MS 251‚ contact STIHL support through their official website or authorized dealers. Visit the STIHL website for detailed contact information‚ including phone numbers and email options. Support is available for parts inquiries‚ troubleshooting‚ and warranty-related questions. Additionally‚ STIHL offers online resources‚ such as manuals and FAQs‚ to help resolve common issues. For personalized help‚ reach out to local authorized dealers‚ who provide expert advice and repair services. Ensure to have your model number and serial number ready for efficient support. This streamlined process ensures quick resolution to any concerns.
Resources for Further Information
For detailed information on the STIHL MS 251‚ visit the official STIHL website or download the PDF manual. Community forums and authorized dealers also provide valuable insights.
9.1 Official STIHL Websites and Manuals
The STIHL MS 251 parts list and manual are available on the official STIHL website‚ providing detailed diagrams and specifications. Users can download the PDF manual‚ which includes an exploded parts view‚ maintenance instructions‚ and troubleshooting guides. The official website also offers a comprehensive parts catalog‚ enabling users to identify and order genuine components. Additionally‚ STIHL authorized dealers provide access to instructional materials and technical support‚ ensuring accurate repairs and maintenance. These resources are essential for owners seeking to keep their chainsaw in optimal condition. Always refer to official sources for reliable information.
9.2 Community Forums and Expert Advice
Community forums and expert platforms offer valuable insights for STIHL MS 251 owners. Online forums like Chaturbate and specialized woodworking communities provide discussions on parts identification‚ troubleshooting‚ and maintenance tips. Experts and experienced users share advice on optimizing performance and resolving common issues. These platforms often include links to official STIHL manuals and parts lists‚ making them a go-to resource for DIY repairs. Engaging with these communities can help users gain practical knowledge and ensure their chainsaw operates at peak efficiency. The collective expertise fosters a supportive environment for troubleshooting and parts identification.
Interactive Parts Diagram
The STIHL MS 251 interactive parts diagram provides an exploded view of components‚ allowing users to easily identify and purchase genuine parts. This tool streamlines maintenance and repairs.
10.1 Navigating the Exploded View
The STIHL MS 251 interactive parts diagram provides a detailed exploded view of the chainsaw‚ enabling users to easily identify components. By selecting specific sections of the diagram‚ users can zoom in on individual parts and access their part numbers‚ descriptions‚ and purchasing options. This feature simplifies the process of locating and ordering genuine STIHL parts. The diagram is accessible online and is designed to be user-friendly‚ allowing even novice users to navigate effortlessly. It is an essential tool for maintenance‚ repairs‚ and ensuring the chainsaw operates at peak performance.
10.2 Using the Diagram for Parts Identification
The exploded view diagram of the STIHL MS 251 is a valuable tool for identifying specific parts. Each component is clearly labeled with a part number and description‚ allowing users to quickly locate the item they need. By referencing the diagram‚ users can ensure they are ordering the correct spare parts for maintenance or repairs. The detailed visualization helps eliminate confusion‚ making it easier to match parts with their corresponding numbers in the PDF list. This feature is particularly useful for DIY enthusiasts and technicians aiming to keep the chainsaw in optimal working condition.