Chain for Stihl MS251: Best Picks for Precision Cutting (5 Pro Tips)

Okay, let’s tackle this beast. The problem? You’ve got a Stihl MS251, a reliable workhorse, but the wrong chain can turn it into a dull nag. The solution? Finding the right chain for your specific needs, boosting its cutting performance, and ultimately, making your wood processing tasks faster, safer, and more efficient. I’ve spent years felling trees, bucking logs, and splitting firewood, and I’ve learned a thing or two about chainsaw chains along the way. This isn’t just a product review; it’s a guide to optimizing your MS251’s cutting potential, packed with pro tips and hard-earned wisdom. Let’s dive in!

Chain for Stihl MS251: Best Picks for Precision Cutting (5 Pro Tips)

I remember one particularly brutal winter. We were short on firewood, and my old chainsaw was struggling. I was using a dull chain, forcing the saw, and exhausting myself. It was a classic case of “penny wise, pound foolish.” That experience taught me the immense value of a sharp, appropriate chain. Now, I wouldn’t dream of running a subpar chain on my saws. Let’s get you sorted so you don’t end up in the same boat.

Understanding Your Needs and Your Stihl MS251

Before we jump into specific chain recommendations, it’s crucial to understand what you’re cutting and why. Are you primarily felling small trees, limbing branches, or processing firewood? The type of wood you’re working with also matters. Softwoods like pine require a different chain than hardwoods like oak or maple.

The Stihl MS251 is a versatile saw, but it’s not a one-size-fits-all solution. It’s a mid-range saw, ideal for homeowners and occasional users, known for its balance of power and weight. However, its engine size and bar length dictate the optimal chain characteristics.

• Engine Size: The MS251 typically has an engine displacement around 45.6 cc.
• Bar Length: Common bar lengths range from 16 to 18 inches.
• Chain Pitch: The most common pitch is 0.325 inches.
• Chain Gauge: The most common gauge is 0.063 inches (1.6mm).
• Drive Links: The number of drive links varies depending on the bar length, but typically falls between 62 and 74.

Pro Tip: Always consult your owner’s manual to confirm the correct specifications for your particular MS251 model. Using the wrong chain can damage your saw and pose a safety hazard.

Choosing the Right Chain Type: My Top Recommendations

Okay, let’s get down to brass tacks. Here are my top chain recommendations for the Stihl MS251, categorized by cutting purpose:

1. For General Purpose Cutting and Firewood: Stihl Rapid Micro Comfort 3 (RMC3)

• Why I Recommend It: This is my go-to chain for everyday tasks. The RMC3 is a low-vibration, low-kickback chain that’s forgiving for less experienced users. It’s aggressive enough for most firewood species and general tree maintenance.
• Features:
  • Semi-chisel cutters: Offers a good balance of cutting speed and durability.
  • Bumper drive links: Reduces kickback risk.
  • Low vibration: Makes for more comfortable prolonged use.
• My Experience: I’ve used the RMC3 extensively for bucking smaller logs and limbing. It’s a workhorse that holds its edge well, even when encountering slightly dirty wood.
• Data Point: According to Stihl’s internal testing, the RMC3 offers up to 20% less vibration compared to standard chains.

2. For Faster Cutting and Hardwood: Stihl Rapid Super (RS)

• Why I Recommend It: When speed is paramount, and you’re tackling tougher hardwoods, the RS chain is your best bet. It’s a full-chisel chain designed for aggressive cutting.
• Features:
  • Full-chisel cutters: Provides the fastest cutting speed.
  • Requires more skill: Higher kickback potential, so use with caution.
  • Best for clean wood: Dulls faster in dirty conditions.
• My Experience: I use the RS chain when I’m processing large quantities of seasoned oak or maple. It makes a noticeable difference in cutting speed, but it does require more frequent sharpening.
• Caution: This chain is not recommended for beginners due to the increased risk of kickback. Always wear appropriate safety gear, including a helmet, eye protection, and chaps.

3. For Dirty or Abrasive Conditions: Stihl Rapid Duro 3 (RD3)

• Why I Recommend It: If you’re cutting wood that’s likely to be dirty, sandy, or otherwise abrasive, the RD3 is the chain for you. It features carbide-tipped cutters that are incredibly durable.
• Features:
  • Carbide-tipped cutters: Holds its edge much longer than standard chains.
  • Higher price point: But the longevity makes it worthwhile in abrasive conditions.
  • Slower cutting speed: Compared to full-chisel chains.
• My Experience: I’ve used the RD3 when cutting reclaimed lumber or working in areas with sandy soil. It’s a lifesaver when you don’t want to be constantly sharpening your chain.
• Data Point: Carbide-tipped chains can last up to 10 times longer than standard chains in abrasive conditions.

4. For Safety and Reduced Kickback: Stihl Picco Micro 3 (PM3)

• Why I Recommend It: For users prioritizing safety above all else, the PM3 is an excellent choice. It’s designed with features that significantly reduce the risk of kickback.
• Features:
  • Narrow kerf: Requires less power to cut.
  • Bumper drive links: Further reduces kickback.
  • Ideal for beginners: Very forgiving and easy to control.
• My Experience: I often recommend the PM3 to friends and family who are new to chainsaw operation. It provides a sense of security and helps them develop good cutting habits.

5. Alternative Brands to Consider: Oregon Chains

• Why I Recommend It: Oregon is a reputable brand that offers chains compatible with Stihl chainsaws.
• Features:
  • Variety of Options: Similar to Stihl, Oregon offers multiple options, including general-purpose, low-kickback, and ripping chains.
  • Cost-Effective: In some cases, Oregon chains can be more cost-effective than Stihl chains.
• My Experience: I have used Oregon chains in the past and found them to be a reliable alternative to Stihl chains. I have used Oregon 91PX chain on my Stihl MS251 and it worked perfectly fine.

Pro Tip: When switching between chain types, remember to adjust your cutting technique accordingly. Full-chisel chains require a smoother, more controlled approach than semi-chisel chains.

5 Pro Tips for Precision Cutting with Your Stihl MS251

Now that you’ve chosen the right chain, let’s talk about how to get the most out of it. These are the tips I’ve learned over years of experience.

1. Mastering Sharpening: The Key to Performance

A dull chain is not only inefficient but also dangerous. It forces you to apply more pressure, increasing the risk of kickback and fatigue. Sharpening your chain regularly is the single most important thing you can do to improve its performance.

• How Often to Sharpen: I typically sharpen my chain after every tank of gas, or sooner if I notice a decrease in cutting speed or the chain starts producing fine sawdust instead of chips.
• Tools You’ll Need:
  • Round file: Use the correct diameter file for your chain’s pitch (typically 5/32″ for a 0.325″ pitch chain).
  • File guide: Helps maintain the correct filing angle and depth.
  • Flat file: For lowering the depth gauges.
  • Depth gauge tool: Ensures consistent depth gauge height.
• Sharpening Technique:
  1. Secure the chainsaw in a vise or on a stump.
  2. Place the file guide on the cutter, aligning it with the filing angle markings.
  3. File each cutter with smooth, even strokes, maintaining the correct angle and depth.
  4. Use the flat file and depth gauge tool to lower the depth gauges to the recommended height (typically 0.025″).
  5. Repeat for all cutters.

Pro Tip: Invest in a good quality sharpening kit. It will pay for itself in the long run by extending the life of your chains and improving your cutting efficiency.

2. Chain Tension: Finding the Sweet Spot

Proper chain tension is crucial for both performance and safety. Too loose, and the chain can derail or bind. Too tight, and it can overheat and wear prematurely.

• How to Adjust Chain Tension:
  1. Loosen the bar nuts.
  2. Use the chain tensioning screw to adjust the tension.
  3. The chain should be snug against the bar, but you should still be able to pull it around the bar by hand.
  4. Tighten the bar nuts securely.
• Checking Tension: After making a few cuts, recheck the tension. The chain will often stretch slightly when it’s new.
• Hot vs. Cold Tension: Adjust the tension when the chain is cold. The chain will expand as it heats up during use.

Pro Tip: Err on the side of slightly loose rather than too tight. A slightly loose chain is less likely to overheat and break.

3. Lubrication: Keeping Things Running Smoothly

Proper lubrication is essential for extending the life of your chain and bar. The oil reduces friction, prevents overheating, and helps flush away debris.

• Using the Right Oil: Use a high-quality bar and chain oil specifically designed for chainsaws. Avoid using motor oil or other substitutes, as they may not provide adequate lubrication.
• Checking Oil Levels: Check the oil level frequently and refill as needed. I typically refill the oil tank every time I refill the gas tank.
• Cleaning the Oiler: Periodically clean the oiler to ensure it’s functioning properly. Debris can clog the oiler and prevent it from lubricating the chain.
• Adjusting Oiler Output: Some chainsaws allow you to adjust the oiler output. If you’re cutting a lot of wood, you may need to increase the output.

Pro Tip: Use a biodegradable bar and chain oil to minimize your environmental impact.

4. Cutting Techniques: Working Smarter, Not Harder

Proper cutting techniques can significantly improve your efficiency and reduce the risk of injury.

• Felling:
  • Plan your escape route: Before making any cuts, plan your escape route in case the tree falls unexpectedly.
  • Make a notch cut: The notch cut determines the direction of the fall.
  • Make a back cut: The back cut should be slightly above the notch cut, leaving a hinge of wood to control the fall.
• Bucking:
  • Support the log: Before bucking a log, make sure it’s properly supported to prevent it from pinching the saw.
  • Use the right cutting technique: Depending on the log’s position, you may need to use a top cut, a bottom cut, or a combination of both.
• Limbing:
  • Work from the base to the top: Start by limbing the lower branches and work your way up.
  • Be aware of spring poles: Spring poles are branches that are under tension and can snap back violently when cut.

Pro Tip: Always be aware of your surroundings and potential hazards. Chainsaw accidents can happen quickly and unexpectedly.

5. Maintenance: Keeping Your Saw in Top Condition

Regular maintenance is essential for keeping your chainsaw running smoothly and extending its lifespan.

• Cleaning: Clean your chainsaw after each use. Remove sawdust and debris from the bar, chain, and engine.
• Air Filter: Clean or replace the air filter regularly. A dirty air filter can restrict airflow and reduce engine performance.
• Spark Plug: Check the spark plug periodically and replace it if necessary.
• Fuel Filter: Replace the fuel filter annually.
• Bar Maintenance:
  • Clean the bar groove: Use a bar groove cleaner to remove debris from the bar groove.
  • Check the bar rails: Make sure the bar rails are smooth and even. If they’re worn or damaged, you may need to replace the bar.
  • Flip the bar: Periodically flip the bar to distribute wear evenly.

Pro Tip: Store your chainsaw in a dry place to prevent rust and corrosion.

Workflow Optimization: From Forest to Firewood Pile

Beyond the chainsaw itself, optimizing your entire workflow can dramatically increase your efficiency. Here are a few strategies I’ve found particularly effective:

• Log Handling: Invest in tools like log tongs, cant hooks, and skidding winches to make log handling easier and safer.
• Splitting: A good log splitter can save you hours of back-breaking work. Consider a hydraulic splitter for large quantities of firewood.
• Stacking: Stack your firewood neatly to promote airflow and speed up the drying process. I prefer to stack my firewood in rows, with gaps between the rows for ventilation.
• Drying: The key to good firewood is proper drying. Aim for a moisture content of 20% or less. Use a moisture meter to check the moisture content of your firewood.
• Storage: Store your firewood in a dry, sheltered location to protect it from the elements.

Data Point: Properly seasoned firewood burns more efficiently and produces more heat. According to the U.S. Department of Energy, burning unseasoned firewood can reduce heating efficiency by as much as 25%.

Material Sourcing: Sustainable Timber Practices

As responsible wood processors, we have a duty to source our timber sustainably. Here are a few tips:

• Harvesting from your own property: If you own forested land, develop a sustainable harvesting plan. Consult with a professional forester to ensure you’re managing your forest responsibly.
• Purchasing from reputable suppliers: Buy timber from suppliers who practice sustainable forestry. Look for certifications like the Forest Stewardship Council (FSC).
• Salvaging fallen trees: Utilize fallen trees and branches whenever possible. This is a great way to reduce waste and make use of readily available resources.
• Avoiding illegally harvested timber: Never purchase timber from sources that you suspect are involved in illegal logging.

Ethical Consideration: Sustainable timber practices not only protect our forests but also support local economies and communities.

Case Study: Optimizing Firewood Production in a Small Workshop

I once consulted with a small woodworking shop that was struggling to keep up with firewood demand. They were using outdated equipment and inefficient processes. Here’s what we did to optimize their operation:

1. Invested in a hydraulic log splitter: This significantly reduced the time and effort required to split firewood.
2. Implemented a log handling system: We used a combination of log tongs, cant hooks, and a small skid steer to move logs around the workshop.
3. Improved stacking and drying practices: We implemented a new stacking system that promoted better airflow and reduced drying time.
4. Trained employees on proper chainsaw techniques: This improved their efficiency and reduced the risk of injury.

Result: Within a few months, the workshop was able to double its firewood production while reducing its labor costs.

Addressing Common Challenges

Even with the best equipment and techniques, wood processing can be challenging. Here are a few common problems and how to address them:

• Minimizing Wood Waste:
  • Use a chainsaw mill: A chainsaw mill allows you to cut logs into lumber, reducing waste and maximizing the value of your timber.
  • Salvage small pieces: Use small pieces of wood for kindling or woodworking projects.
  • Compost the sawdust: Sawdust can be composted and used to enrich your garden soil.
• Dealing with Difficult Wood:
  • Use a wedge: A wedge can help prevent the saw from pinching when cutting logs that are under tension.
  • Use a different cutting technique: Sometimes, a different cutting technique can make a difficult cut easier.
  • Sharpen your chain frequently: A sharp chain is essential for cutting difficult wood.
• Safety Concerns:
  • Always wear appropriate safety gear: This includes a helmet, eye protection, hearing protection, gloves, and chaps.
  • Be aware of your surroundings: Look for potential hazards such as overhead branches, uneven terrain, and wildlife.
  • Never operate a chainsaw when you’re tired or under the influence of drugs or alcohol.

Current Trends and Best Practices

The wood processing industry is constantly evolving. Here are a few current trends and best practices to keep in mind:

• Electric Chainsaws: Electric chainsaws are becoming increasingly popular due to their low noise levels, reduced emissions, and ease of use.
• Robotics and Automation: Robotics and automation are being used to automate various wood processing tasks, such as log handling and splitting.
• Biochar Production: Biochar is a charcoal-like material that can be used to improve soil fertility and sequester carbon. It’s produced by heating wood in the absence of oxygen.
• Wood Waste Utilization: Innovative technologies are being developed to utilize wood waste for energy production and other applications.

Final Thoughts: From Novice to Pro

Choosing the right chain for your Stihl MS251 is more than just a matter of convenience; it’s an investment in efficiency, safety, and the overall quality of your work. By understanding the different chain types, mastering sharpening techniques, and optimizing your workflow, you can transform your MS251 from a basic tool into a precision cutting machine.

Key Takeaways and Next Steps

• Identify your cutting needs: Determine the type of wood you’ll be cutting and the tasks you’ll be performing.
• Choose the right chain: Select a chain that’s appropriate for your needs and your MS251 model.
• Master sharpening: Learn how to sharpen your chain properly and do it regularly.
• Optimize your workflow: Implement efficient log handling, splitting, and stacking practices.
• Practice sustainable timber sourcing: Source your timber responsibly to protect our forests.
• Prioritize safety: Always wear appropriate safety gear and be aware of your surroundings.

Next Steps:

1. Review your owner’s manual: Familiarize yourself with the specifications and safety guidelines for your Stihl MS251.
2. Invest in a sharpening kit: Get the tools you need to keep your chain sharp.
3. Practice your sharpening technique: Watch videos and read articles to learn the proper sharpening technique.
4. Experiment with different chain types: Try out different chains to see which ones work best for your needs.
5. Join a local logging or firewood group: Connect with other wood processors and share tips and experiences.

Remember, wood processing is a skill that takes time and practice to develop. Don’t be afraid to experiment, make mistakes, and learn from your experiences. With the right knowledge and equipment, you can master the art of precision cutting and enjoy the satisfaction of transforming raw wood into a valuable resource. Now get out there, sharpen that chain, and get cutting!

Learn more