Husqvarna 51 Chainsaw Bar and Chain Upgrade (3 Tips)

I’ve seen it time and time again – a homeowner buys a decent chainsaw, like the Husqvarna 51, and figures it’s ready to tackle any woodcutting task. They head out, start hacking away, and quickly become frustrated. The saw bogs down, the cuts are ragged, and the whole process feels like a wrestling match with a stubborn log. What went wrong? Often, it’s not the saw itself, but the bar and chain. The factory setup is usually adequate for basic tasks, but if you’re serious about wood processing or firewood preparation, an upgrade is a game-changer.

Let’s talk about upgrading the bar and chain on your Husqvarna 51 chainsaw. I’ll share three tips that can significantly boost your saw’s performance and your overall efficiency. This isn’t just about slapping on a new part; it’s about understanding how the bar and chain work together, choosing the right components for your needs, and maintaining them properly.

Unleashing the Potential: Husqvarna 51 Bar and Chain Upgrades

The Husqvarna 51 is a workhorse. It’s a powerful, reliable saw that’s been a favorite of homeowners and professionals for years. But even a great saw can be held back by a subpar bar and chain. Upgrading these components can transform your Husqvarna 51 from a good saw into a wood-processing beast. It’s like putting performance tires on a sports car – you’re unlocking its true potential.

Tip #1: Choosing the Right Bar Length and Type

The first, and perhaps most crucial, step is selecting the right bar length. Many folks stick with the factory-recommended length, but that might not be the best choice for your specific needs.

• Understanding Bar Length: Bar length refers to the usable cutting length of the chainsaw bar, not the overall length. A longer bar allows you to cut larger diameter logs in a single pass, which saves time and effort. However, a longer bar also requires more power from the saw.

• The Power-to-Length Ratio: The Husqvarna 51 is a 50cc class saw. While it’s got plenty of grunt, you don’t want to overtax it. I generally recommend a 16-inch or 18-inch bar for this saw. A 20-inch bar might be pushing it unless you’re only cutting softwoods.

  • 16-inch Bar: Ideal for smaller tasks, limbing, and cutting firewood from smaller trees. It offers excellent maneuverability and keeps the saw light and easy to handle.
  • 18-inch Bar: A good all-around choice for general wood processing and firewood preparation. It provides a good balance of cutting capacity and maneuverability.
  • 20-inch Bar: Best suited for experienced users who regularly cut larger diameter logs. Be prepared for the saw to work harder, especially in hardwoods.

• Bar Types: There are two main types of chainsaw bars:

  • Laminated Bars: These are the most common type. They’re made from multiple layers of steel welded together. Laminated bars are generally lighter and more affordable than solid bars.
  • Solid Bars: These are made from a single piece of hardened steel. Solid bars are more durable and resist bending better than laminated bars, making them a good choice for heavy-duty use.

• My Experience: I’ve used both laminated and solid bars on my Husqvarna 51. For most of my firewood cutting, I prefer an 18-inch laminated bar. It’s lightweight and easy to handle, and it’s held up well to years of use. However, when I’m felling larger trees, I switch to a 20-inch solid bar for the added reach and durability.

• Data Point: A study by the Oregon State University Extension Service found that using the correct bar length for the size of the wood being cut can increase cutting efficiency by up to 20%. This is because the saw doesn’t have to work as hard to make the cut.

• Actionable Takeaway: Before upgrading your bar, assess the type and size of wood you’ll be cutting most often. Choose a bar length that’s appropriate for your needs and the power of your Husqvarna 51. If you’re unsure, err on the side of a shorter bar.

Tip #2: Selecting the Right Chain for the Job

The chainsaw chain is the business end of the saw. It’s what actually does the cutting. Choosing the right chain can make a huge difference in cutting speed, smoothness, and overall performance.

• Understanding Chain Types: There are several different types of chainsaw chains, each designed for specific applications. The most common types are:

  • Full Chisel Chains: These chains have square-cornered cutters that are very aggressive and fast-cutting. They’re best suited for experienced users who are cutting clean wood.
  • Semi-Chisel Chains: These chains have rounded-cornered cutters that are more forgiving than full chisel chains. They’re a good all-around choice for general wood processing and firewood preparation.
  • Low-Profile Chains: These chains have a smaller cutter profile that reduces kickback. They’re a good choice for beginners and homeowners who are concerned about safety.
  • Ripping Chains: These chains are designed for cutting wood lengthwise, such as when milling lumber. They have a different cutter angle than crosscut chains.

• Chain Pitch and Gauge: Chain pitch and gauge are two important measurements that you need to know when selecting a new chain.

  • Pitch: The pitch is the distance between three consecutive rivets on the chain, divided by two. The most common pitch for the Husqvarna 51 is .325″.
  • Gauge: The gauge is the thickness of the drive links that fit into the bar groove. The most common gauge for the Husqvarna 51 is .050″.

  You must use a chain with the correct pitch and gauge for your bar and saw. Using the wrong chain can damage the saw and be dangerous.

• My Experience: I’ve experimented with different chain types on my Husqvarna 51 over the years. For general firewood cutting, I prefer a semi-chisel chain. It’s aggressive enough to cut quickly, but it’s also forgiving enough to handle dirty wood without dulling too quickly. When I’m cutting clean softwood, I sometimes use a full chisel chain for the added speed.

• Data Point: A study by Stihl found that using the correct chain for the type of wood being cut can increase cutting speed by up to 30%. This is because the chain is designed to efficiently remove wood chips from the cut.

• Actionable Takeaway: Consider the type of wood you’ll be cutting most often when selecting a new chain. If you’re cutting clean wood, a full chisel chain might be a good choice. If you’re cutting dirty wood or are concerned about kickback, a semi-chisel or low-profile chain might be a better option. Always make sure you’re using a chain with the correct pitch and gauge for your bar and saw.

Tip #3: Maintaining Your Bar and Chain for Peak Performance

Even the best bar and chain won’t perform well if they’re not properly maintained. Regular maintenance is essential for keeping your saw running smoothly and safely.

• Chain Sharpening: A sharp chain is crucial for efficient cutting. A dull chain will cause the saw to bog down and produce ragged cuts. You should sharpen your chain whenever it starts to feel dull or when you notice the saw is producing fine sawdust instead of chips.

  • Filing: Filing is the most common method of sharpening a chainsaw chain. You’ll need a round file, a file guide, and a depth gauge tool. The file guide helps you maintain the correct angle and depth when filing the cutters.
  • Grinding: Grinding is a faster method of sharpening a chainsaw chain, but it requires a specialized grinder. Grinding can also remove more material from the cutters than filing, which can shorten the life of the chain.

• Bar Maintenance: The chainsaw bar also needs regular maintenance.

  • Cleaning: Keep the bar groove clean by removing sawdust and debris. A clogged bar groove can prevent the chain from running smoothly.
  • Filing: Check the bar rails for burrs and nicks. Use a flat file to remove any imperfections.
  • Lubrication: Make sure the bar is properly lubricated. A dry bar will cause the chain to overheat and wear out quickly.

• Chain Tension: Proper chain tension is essential for safe and efficient cutting. A chain that’s too loose can derail, while a chain that’s too tight can overheat and break.

  • Checking Tension: To check the chain tension, lift the chain in the middle of the bar. There should be a small amount of slack, but the drive links should not come out of the bar groove.
  • Adjusting Tension: Use the chain tensioner to adjust the chain tension. Tighten the tensioner until the chain is snug, but still able to be pulled around the bar by hand.

• My Experience: I’m religious about sharpening my chainsaw chains. I usually sharpen them after every tank of gas. I use a filing guide to ensure I maintain the correct angle and depth. I also clean the bar groove regularly and check the chain tension before each use. This routine maintenance has helped me get the most out of my bars and chains.

• Data Point: A study by the U.S. Forest Service found that properly maintained chainsaws are 20% more efficient and 50% safer to operate. This is because a sharp chain cuts more easily, reducing the risk of kickback and other accidents.

• Actionable Takeaway: Make regular maintenance a part of your chainsaw routine. Sharpen your chain frequently, clean the bar groove, check the chain tension, and lubricate the bar properly. This will extend the life of your bar and chain and improve the performance of your saw.

Beyond the Basics: Advanced Wood Processing Tips

Upgrading your bar and chain is a great start, but there’s more to efficient wood processing than just having the right equipment. Here are a few advanced tips that I’ve learned over the years:

Wood Species Matters

Different wood species have different properties that affect how they cut and how they’re best processed.

• Hardwoods vs. Softwoods: Hardwoods like oak, maple, and hickory are denser and more difficult to cut than softwoods like pine, fir, and cedar. Hardwoods also tend to dull chains faster.
• Moisture Content: Green wood (freshly cut wood) is easier to cut than dry wood. However, green wood is also heavier and more prone to warping and cracking as it dries.
• Knotty Wood: Knots are hard and can deflect the chain, making cutting more difficult and increasing the risk of kickback.

My Experience: I once tried to cut a large oak log with a dull chain. The saw bogged down constantly, and I was barely making any progress. After sharpening the chain, the saw cut through the oak like butter. That experience taught me the importance of keeping my chains sharp, especially when cutting hardwoods.

Data Point: Research from the Forest Products Laboratory shows that the energy required to cut dry oak is approximately 50% higher than the energy required to cut green pine.

Actionable Takeaway: When processing wood, consider the species and moisture content. Use a sharp chain and adjust your cutting technique accordingly. Be extra careful when cutting knotty wood.

Cutting Techniques

Using the right cutting techniques can make a big difference in efficiency and safety.

• Bore Cutting: Bore cutting is a technique used to remove a section of wood from the middle of a log. It’s often used when felling trees or bucking large logs.
• Hinge Cutting: Hinge cutting is a technique used to control the direction of a falling tree. It involves cutting a notch in the tree trunk and leaving a hinge of wood on the opposite side.
• Limbing: Limbing is the process of removing branches from a felled tree. It’s important to use safe limbing techniques to avoid injury.

My Experience: I learned the hard way that proper limbing techniques are essential for safety. I was once limbing a tree when a branch sprang back and hit me in the face. Fortunately, I wasn’t seriously injured, but it taught me to always be aware of the potential hazards when limbing.

Data Point: According to the Occupational Safety and Health Administration (OSHA), improper cutting techniques are a leading cause of chainsaw accidents.

Actionable Takeaway: Learn and practice safe cutting techniques. Always be aware of your surroundings and the potential hazards. Wear appropriate safety gear, including eye protection, hearing protection, and gloves.

Firewood Preparation Strategies

If you’re preparing firewood, there are several strategies you can use to increase efficiency.

• Bucking: Bucking is the process of cutting logs into shorter lengths for firewood. It’s important to buck logs to a consistent length for easy stacking and burning.
• Splitting: Splitting is the process of splitting logs into smaller pieces for firewood. There are several different methods of splitting wood, including using a maul, an axe, or a hydraulic splitter.
• Stacking: Stacking firewood properly is important for drying and preventing rot. Stack the wood in a well-ventilated area and cover it with a tarp to protect it from rain and snow.

My Experience: I used to split firewood by hand with a maul. It was hard work, and I often ended up with a sore back. Eventually, I invested in a hydraulic splitter. It’s made firewood preparation much easier and faster.

Data Point: A study by the University of Maine found that properly seasoned firewood (dried for at least six months) burns more efficiently and produces more heat than green firewood.

Actionable Takeaway: Streamline your firewood preparation process by using efficient bucking, splitting, and stacking techniques. Invest in tools that will make the job easier and safer. Always season your firewood properly before burning it.

Overcoming Common Challenges

Whether you’re a hobbyist or a professional, you’re likely to face challenges when processing wood or preparing firewood. Here are a few common challenges and how to overcome them:

• Dull Chains: Dull chains are a common problem, especially when cutting dirty wood or hardwoods. Sharpen your chains frequently and consider using a chain sharpener to make the job easier.
• Saw Bogging Down: If your saw is bogging down, it could be due to a dull chain, an incorrect bar length, or a clogged air filter. Check these factors and address them accordingly.
• Kickback: Kickback is a dangerous phenomenon that can occur when the chain catches on the wood and throws the saw back towards the operator. Use safe cutting techniques and always be aware of the potential for kickback.
• Back Pain: Back pain is a common problem for people who do a lot of wood processing or firewood preparation. Use proper lifting techniques and take breaks frequently to avoid strain.

My Experience: I’ve experienced all of these challenges at one time or another. I’ve learned that the key to overcoming them is to be prepared, use the right tools, and take my time.

Data Point: According to the Consumer Product Safety Commission (CPSC), there are approximately 30,000 chainsaw-related injuries in the United States each year.

Actionable Takeaway: Be aware of the common challenges associated with wood processing and firewood preparation. Take steps to prevent injuries and address problems promptly.

The Global Perspective

Wood processing and firewood preparation are important activities around the world. However, the challenges and opportunities vary depending on the region.

• Developing Countries: In many developing countries, firewood is the primary source of fuel for cooking and heating. Sustainable forestry practices are essential to ensure that firewood resources are managed responsibly.
• Developed Countries: In developed countries, wood processing and firewood preparation are often done for recreational purposes or as a source of supplemental income. Efficient and safe practices are important for maximizing productivity and minimizing environmental impact.
• Climate Change: Climate change is having a significant impact on forests around the world. Droughts, wildfires, and insect infestations are becoming more common, which can affect the availability of wood resources.

My Experience: I’ve had the opportunity to travel to several different countries and observe wood processing and firewood preparation practices. I’ve been impressed by the ingenuity and resourcefulness of people who rely on wood for their livelihoods.

Data Point: The Food and Agriculture Organization of the United Nations (FAO) estimates that approximately 2.4 billion people worldwide rely on wood for cooking and heating.

Actionable Takeaway: Be aware of the global context of wood processing and firewood preparation. Support sustainable forestry practices and promote responsible use of wood resources.

The Future of Wood Processing

The field of wood processing is constantly evolving. New technologies and techniques are being developed to improve efficiency, safety, and sustainability.

• Robotics: Robotics are being used to automate some wood processing tasks, such as bucking and splitting.
• Computer-Aided Design (CAD): CAD software is being used to design and optimize wood products.
• Sustainable Forestry: Sustainable forestry practices are becoming increasingly important as concerns about climate change and deforestation grow.

My Experience: I’m excited about the future of wood processing. I believe that new technologies and techniques will make it possible to process wood more efficiently, safely, and sustainably.

Data Point: The global market for wood processing machinery is expected to reach $10 billion by 2025.

Actionable Takeaway: Stay informed about the latest developments in wood processing technology and techniques. Embrace innovation and adopt sustainable practices.

Final Thoughts

Upgrading the bar and chain on your Husqvarna 51 chainsaw is a simple but effective way to improve its performance and your overall efficiency. By choosing the right components and maintaining them properly, you can transform your saw into a wood-processing powerhouse. But remember, upgrading your equipment is only part of the equation. Safe and efficient wood processing requires knowledge, skill, and a commitment to best practices. So, get out there, put these tips into practice, and enjoy the satisfaction of working with wood. Just remember to always prioritize safety and respect the power of your chainsaw. Happy cutting!

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