Stihl 391 vs 362 Chainsaws (5 Key Power & Weight Insights)

Ah, the feel of sawdust clinging to my skin, the scent of freshly cut wood filling the air – these are the sensations that truly ignite my passion. The rough bark under my gloves, the smooth, clean face of a split log… it’s a tactile symphony that speaks to the soul of anyone who works with wood. Today, I’m diving deep into a comparison that’s been on the minds of many loggers and firewood enthusiasts: the Stihl MS 391 versus the MS 362. I’ve spent countless hours with both of these saws, putting them through their paces in a variety of conditions. I’ll share my insights on their power, weight, and overall performance, helping you decide which one is the right tool for your needs.

Stihl MS 391 vs MS 362: 5 Key Power & Weight Insights

Choosing the right chainsaw can feel like a monumental task. Both the Stihl MS 391 and MS 362 are popular choices, but they cater to slightly different needs. I’ll break down five crucial aspects – power, weight, engine technology, cutting performance, and user comfort – to help you make an informed decision. I’ll also share personal anecdotes and experiences that I’ve gathered over the years using these saws in real-world scenarios.

Power and Engine Displacement: Unleashing the Beast

The heart of any chainsaw is its engine. This is where the raw power originates, dictating the size of logs you can tackle and the speed at which you can work.

• Stihl MS 391: This workhorse boasts a 64.1 cc engine. I’ve found that it delivers a solid, reliable power output, suitable for felling medium-sized trees and processing firewood. I once used it to take down a seasoned oak tree about 24 inches in diameter. It handled the job without complaint, although it definitely felt like it was working hard.
• Stihl MS 362: The MS 362 packs a slightly smaller 59.0 cc engine. Don’t let the smaller displacement fool you, though. This saw is known for its high torque and responsiveness. I’ve used it extensively for limbing and smaller felling jobs. It feels noticeably quicker and more agile than the MS 391.

Data & Insights:

Personal Experience:

I remember a particular job where I had to clear a dense thicket of poplar trees. The MS 362 was the perfect choice for this task. Its lighter weight and quick acceleration allowed me to move quickly and efficiently through the tangled branches.

Takeaway:

The MS 391 offers robust power for demanding tasks, while the MS 362 prioritizes responsiveness and agility. If you regularly fell larger trees, the MS 391 might be the better option. For more versatile use, including limbing and smaller felling jobs, the MS 362 shines.

Weight and Ergonomics: Handling the Load

Weight is a critical factor, especially when you’re working long hours. A heavier saw can lead to fatigue and decreased productivity. Ergonomics also play a significant role in comfort and control.

• Stihl MS 391: This saw tips the scales at around 6.2 kg (13.7 lbs) without the bar and chain. I’ve noticed that the added weight can become tiring during extended use, especially when limbing branches overhead.
• Stihl MS 362: The MS 362 is lighter, weighing in at approximately 5.6 kg (12.3 lbs) without the bar and chain. This difference might not seem significant on paper, but it’s noticeable in the field. I find it much easier to maneuver and control, reducing fatigue during long workdays.

Data & Insights:

Personal Experience:

I once spent an entire day bucking firewood with the MS 391. By the end of the day, my arms and back were aching. I realized that the extra weight was taking a toll on my body. Since then, I’ve been more mindful of choosing the right saw for the task at hand, prioritizing lighter models for longer jobs.

Takeaway:

The MS 362’s lighter weight makes it a more comfortable and manageable option for extended use. If you value maneuverability and reduced fatigue, the MS 362 is the clear winner.

Engine Technology and Fuel Efficiency: Maximizing Performance

Modern chainsaw engines incorporate advanced technologies to improve performance, reduce emissions, and enhance fuel efficiency.

• Stihl MS 391: This saw features Stihl’s 2-MIX engine technology, which helps to reduce exhaust emissions and improve fuel economy. I’ve found that it’s relatively fuel-efficient for its size, allowing me to work for longer periods without refueling.
• Stihl MS 362: The MS 362 also utilizes the 2-MIX engine, but it’s further enhanced with stratified scavenging. This technology helps to reduce fuel consumption and emissions even further. In my experience, the MS 362 is noticeably more fuel-efficient than the MS 391.

Data & Insights:

Personal Experience:

I once compared the fuel consumption of the two saws side-by-side. I used them both to buck a pile of firewood of similar size. The MS 362 consistently used less fuel, allowing me to complete the task with fewer refills.

Takeaway:

The MS 362’s advanced engine technology provides superior fuel efficiency and reduced emissions. If you’re concerned about environmental impact and fuel costs, the MS 362 is the better choice.

Cutting Performance and Bar Length: Sizing Up the Task

The bar length and chain type significantly impact a chainsaw’s cutting performance. Choosing the right bar length is crucial for safety and efficiency.

• Stihl MS 391: This saw can accommodate bar lengths ranging from 16 to 25 inches. I typically use a 20-inch bar for felling medium-sized trees and bucking firewood. The longer bar provides ample reach and cutting capacity.
• Stihl MS 362: The MS 362 is typically used with bar lengths ranging from 16 to 20 inches. I find that a 18-inch bar is a good compromise between maneuverability and cutting power. It’s suitable for limbing, smaller felling jobs, and firewood processing.

Data & Insights:

Personal Experience:

I once tried using a 25-inch bar on the MS 362. While it could technically handle the bar, the saw felt underpowered and struggled to maintain cutting speed in larger logs. It’s important to match the bar length to the saw’s power output for optimal performance.

Takeaway:

The MS 391 offers greater versatility in terms of bar length, making it suitable for a wider range of cutting tasks. The MS 362 is best suited for shorter bars, prioritizing maneuverability and cutting speed.

User Comfort and Maintenance: Ensuring Longevity

User comfort and ease of maintenance are essential for ensuring a positive experience and prolonging the life of your chainsaw.

• Stihl MS 391: This saw features a vibration dampening system that reduces fatigue during extended use. However, I’ve found that the vibration is still noticeable, especially compared to the MS 362. Maintenance is relatively straightforward, with easy access to the air filter and spark plug.
• Stihl MS 362: The MS 362 boasts an advanced anti-vibration system that effectively isolates the engine from the handles. This significantly reduces vibration and improves user comfort. I’ve also found that the MS 362 is easier to maintain, with tool-less access to the air filter and spark plug.

Data & Insights:

Personal Experience:

I once spent an entire day using both saws to clear a large area of overgrown brush. By the end of the day, my hands were noticeably more fatigued after using the MS 391. The MS 362’s superior anti-vibration system made a significant difference in overall comfort.

Takeaway:

The MS 362 offers superior user comfort and easier maintenance. If you value reduced vibration and convenient maintenance features, the MS 362 is the better choice.

Deep Dive: Understanding Chainsaw Components and Maintenance

Beyond comparing specific models, it’s crucial to understand the core components of a chainsaw and how to maintain them properly. This knowledge will help you get the most out of your investment and ensure safe operation.

Chainsaw Chain: The Cutting Edge

The chain is the heart of the cutting process. Different types of chains are designed for specific applications.

• Types of Chains:

  • Full Chisel: These chains have square-cornered teeth that provide the fastest and most efficient cutting. They are best suited for clean wood and experienced users.
  • Semi-Chisel: These chains have rounded-corner teeth that are more forgiving and less prone to dulling in dirty or frozen wood.
  • Low-Profile: These chains have smaller teeth and a shallower cutting angle, making them safer and easier to control for beginners.

• Chain Maintenance:

  • Sharpening: Regular sharpening is essential for maintaining optimal cutting performance. I recommend using a chainsaw file and guide to sharpen the chain at the correct angle. I typically sharpen my chains after every few tanks of fuel, or whenever I notice a decrease in cutting speed.
  • Lubrication: Proper chain lubrication is crucial for preventing wear and tear. I always use a high-quality chainsaw bar and chain oil. I check the oil level frequently and refill it as needed.
  • Tensioning: Proper chain tension is essential for safe and efficient cutting. The chain should be snug against the bar but still able to be pulled around by hand. I check the chain tension before each use and adjust it as needed.

Personal Experience:

I once neglected to sharpen my chainsaw chain for too long. As a result, the chain became dull and the saw struggled to cut through the wood. I ended up wasting a lot of time and effort. I learned my lesson and now I’m diligent about sharpening my chains regularly.

Takeaway:

Understanding the different types of chainsaw chains and how to maintain them properly is crucial for safe and efficient cutting. Regular sharpening, lubrication, and tensioning will prolong the life of your chain and improve your cutting performance.

Chainsaw Bar: Guiding the Cut

The chainsaw bar provides support and guidance for the chain. Different bar lengths are suitable for different cutting tasks.

• Bar Length:

  • Shorter Bars (12-16 inches): These bars are ideal for limbing, pruning, and smaller felling jobs. They are lightweight and easy to maneuver.
  • Medium Bars (18-20 inches): These bars are a good compromise between maneuverability and cutting power. They are suitable for a wide range of tasks, including firewood processing and felling medium-sized trees.
  • Longer Bars (24 inches and up): These bars are designed for felling large trees. They require more power and skill to operate safely.

• Bar Maintenance:

  • Cleaning: Keep the bar clean and free of debris. I regularly clean the bar groove with a screwdriver or wire brush to remove sawdust and dirt.
  • Flipping: Regularly flip the bar to ensure even wear. This will prolong the life of the bar and prevent it from bending or warping.
  • Lubrication: Ensure that the bar is properly lubricated. Check the oiler hole regularly and clean it if necessary.

Personal Experience:

I once used a chainsaw with a bent bar. The saw vibrated excessively and was difficult to control. I quickly realized that the bent bar was a safety hazard. I replaced the bar immediately and the saw operated much more smoothly and safely.

Takeaway:

Choosing the right bar length and maintaining it properly is essential for safe and efficient cutting. Regularly clean, flip, and lubricate the bar to prolong its life and prevent accidents.

Chainsaw Engine: Powering the Cut

The chainsaw engine provides the power to drive the chain. Understanding the basics of engine operation and maintenance is crucial for keeping your saw running smoothly.

• Engine Types:

  • Two-Stroke Engines: These engines are commonly used in chainsaws due to their high power-to-weight ratio. They require a mixture of gasoline and oil for lubrication.
  • Four-Stroke Engines: These engines are less common in chainsaws but offer improved fuel efficiency and reduced emissions. They have separate oil reservoirs for lubrication.

• Engine Maintenance:

  • Air Filter: Clean the air filter regularly to ensure proper airflow to the engine. A dirty air filter can reduce power and fuel efficiency.
  • Spark Plug: Replace the spark plug periodically to ensure proper ignition. A fouled spark plug can cause the engine to misfire or fail to start.
  • Fuel Filter: Replace the fuel filter regularly to prevent debris from entering the carburetor. A clogged fuel filter can cause the engine to run poorly.
  • Carburetor Adjustment: Adjust the carburetor as needed to ensure proper fuel-air mixture. An improperly adjusted carburetor can cause the engine to run lean or rich, leading to performance problems.

Personal Experience:

I once had a chainsaw that wouldn’t start. I checked the spark plug and found that it was fouled with carbon deposits. I replaced the spark plug and the saw started right up. I learned that regular spark plug maintenance is essential for reliable engine operation.

Takeaway:

Understanding the basics of chainsaw engine operation and maintenance is crucial for keeping your saw running smoothly. Regularly clean the air filter, replace the spark plug and fuel filter, and adjust the carburetor as needed.

Advanced Firewood Preparation Techniques

Once you’ve mastered the basics of chainsaw operation and maintenance, you can move on to more advanced firewood preparation techniques. These techniques will help you process firewood more efficiently and safely.

Timber Grading: Understanding Wood Quality

Timber grading is the process of evaluating the quality of logs based on factors such as size, species, and defects. Understanding timber grading can help you select the best logs for firewood.

• Grading Factors:

  • Size: Larger logs generally yield more firewood.
  • Species: Hardwoods like oak, maple, and ash are preferred for firewood due to their high heat content. Softwoods like pine and fir are less desirable but can still be used.
  • Defects: Knots, rot, and insect damage can reduce the quality of firewood.

• Grading Systems:

  • National Hardwood Lumber Association (NHLA): This system is widely used in North America for grading hardwood lumber.
  • European Norm (EN): This system is used in Europe for grading timber.

Personal Experience:

I once purchased a load of firewood logs that were poorly graded. The logs were full of knots and rot, and they yielded very little usable firewood. I learned to be more selective when purchasing firewood logs and to look for logs that are free of defects.

Takeaway:

Understanding timber grading can help you select the best logs for firewood. Look for logs that are large, made of hardwood, and free of defects.

Sawmill Operations: Processing Logs into Firewood

Sawmills are used to process logs into lumber and other wood products. While you may not have access to a full-scale sawmill, understanding the basics of sawmill operations can help you process firewood more efficiently.

• Sawmill Types:

  • Circular Sawmills: These sawmills use a large circular saw blade to cut logs.
  • Band Sawmills: These sawmills use a long, narrow band saw blade to cut logs.
  • Portable Sawmills: These sawmills are designed to be easily transported to remote locations.

• Sawmill Operations:

  • Debarking: The bark is removed from the log before it is sawn.
  • Sawing: The log is sawn into lumber or firewood.
  • Edging: The edges of the lumber are trimmed to create a uniform width.
  • Trimming: The ends of the lumber are trimmed to create a uniform length.

Personal Experience:

I once visited a local sawmill to learn more about their operations. I was impressed by the efficiency and precision of the sawmill equipment. I learned a lot about how logs are processed into lumber and other wood products.

Takeaway:

Understanding the basics of sawmill operations can help you process firewood more efficiently. Consider using a portable sawmill to process logs into firewood if you have access to a large quantity of logs.

Splitting Techniques: Mastering the Maul and Wedge

Splitting wood is a crucial step in firewood preparation. Mastering the techniques of using a maul and wedge can make this task easier and safer.

• Tools:

  • Maul: A heavy, wedge-shaped tool used to split wood.
  • Wedge: A steel wedge used to split particularly tough or knotty wood.
  • Sledgehammer: Used to drive the wedge into the wood.

• Techniques:

  • Choose the Right Wood: Straight-grained wood splits easier than knotty wood.
  • Position the Wood: Place the wood on a solid, stable surface.
  • Swing with Power: Swing the maul with a controlled, powerful motion.
  • Use the Wedge: If the wood is difficult to split, use a wedge and sledgehammer.

Personal Experience:

I remember struggling to split a particularly knotty piece of oak. I swung the maul repeatedly, but the wood wouldn’t budge. Finally, I used a wedge and sledgehammer to split the wood. I learned that using the right tool for the job can make all the difference.

Takeaway:

Mastering the techniques of using a maul and wedge can make splitting wood easier and safer. Choose the right wood, position it properly, swing with power, and use the wedge when necessary.

Wood Drying Processes: Seasoning for Optimal Burning

Properly drying or “seasoning” firewood is crucial for optimal burning. Dry wood burns hotter, cleaner, and more efficiently than green wood.

• Drying Methods:

  • Air Drying: This is the most common method of drying firewood. The wood is stacked in a well-ventilated area and allowed to dry naturally.
  • Kiln Drying: This method uses a controlled environment to dry the wood quickly.
  • Solar Drying: This method uses the sun’s energy to dry the wood.

• Drying Time:

  • Hardwoods: Hardwoods typically take 6-12 months to dry properly.
  • Softwoods: Softwoods typically take 3-6 months to dry properly.

• Measuring Moisture Content:

  • Moisture Meter: A moisture meter can be used to measure the moisture content of the wood. Firewood should have a moisture content of 20% or less for optimal burning.

Personal Experience:

I once burned a load of firewood that was not properly seasoned. The wood was difficult to light, produced a lot of smoke, and didn’t generate much heat. I learned that properly seasoning firewood is essential for optimal burning.

Takeaway:

Properly drying firewood is crucial for optimal burning. Air drying is the most common method, but kiln drying and solar drying are also options. Use a moisture meter to ensure that the wood is dry enough before burning.

Safety First: Best Practices for Chainsaw and Wood Processing

Safety should always be your top priority when working with chainsaws and processing wood. Following these best practices will help you prevent accidents and injuries.

Personal Protective Equipment (PPE): Shielding Yourself from Hazards

Wearing the right PPE is essential for protecting yourself from the hazards of chainsaw use and wood processing.

• Required PPE:
  • Chainsaw Chaps: These protect your legs from chainsaw cuts.
  • Eye Protection: Safety glasses or a face shield protect your eyes from flying debris.
  • Hearing Protection: Earplugs or earmuffs protect your hearing from the loud noise of the chainsaw.
  • Gloves: Gloves protect your hands from cuts and abrasions.
  • Steel-Toed Boots: Steel-toed boots protect your feet from falling logs and other hazards.
  • Hard Hat: A hard hat protects your head from falling branches and other overhead hazards.

Personal Experience:

I once witnessed a logger who was not wearing chainsaw chaps suffer a serious leg injury when his chainsaw kicked back. The injury could have been prevented if he had been wearing the proper PPE.

Takeaway:

Always wear the required PPE when operating a chainsaw or processing wood. This will help protect you from serious injuries.

Chainsaw Safety Techniques: Mastering Control and Awareness

Mastering proper chainsaw safety techniques is crucial for preventing accidents and injuries.

• Safe Operating Practices:
  • Maintain a Firm Grip: Always maintain a firm grip on the chainsaw with both hands.
  • Keep a Wide Stance: Keep your feet firmly planted and maintain a wide stance for stability.
  • Be Aware of Kickback: Kickback is a sudden, uncontrolled movement of the chainsaw that can cause serious injury. Be aware of the potential for kickback and take steps to prevent it.
  • Never Cut Above Shoulder Height: Cutting above shoulder height is dangerous and can lead to loss of control.
  • Clear the Work Area: Clear the work area of obstacles and debris before starting to cut.
  • Never Work Alone: Always work with a partner in case of an emergency.

Personal Experience:

I once experienced kickback while cutting a small tree. The chainsaw jumped back towards me, but I was able to maintain control and avoid injury. I realized that being aware of the potential for kickback and maintaining a firm grip on the saw are crucial for preventing accidents.

Takeaway:

Master proper chainsaw safety techniques to prevent accidents and injuries. Always maintain a firm grip, keep a wide stance, be aware of kickback, and never cut above shoulder height.

Safe Wood Splitting Practices: Protecting Your Body

Splitting wood can be a physically demanding and potentially dangerous task. Following safe splitting practices will help you protect your body from injury.

• Safe Splitting Techniques:
  • Use a Solid Splitting Block: Use a solid, stable splitting block to support the wood.
  • Position Yourself Properly: Position yourself so that you are not in the path of the maul or wedge.
  • Swing with Control: Swing the maul with a controlled, powerful motion.
  • Use a Wedge for Tough Wood: Use a wedge and sledgehammer for particularly tough or knotty wood.
  • Take Breaks: Take frequent breaks to avoid fatigue.

Personal Experience:

I once strained my back while splitting wood. I realized that I was not using proper technique and that I was trying to split too much wood at once. I started taking more frequent breaks and using a wedge for tough wood, and I haven’t had any back problems since.

Takeaway:

Follow safe wood splitting practices to protect your body from injury. Use a solid splitting block, position yourself properly, swing with control, use a wedge for tough wood, and take frequent breaks.

Emergency Preparedness: Planning for the Unexpected

Even with the best safety precautions, accidents can still happen. Being prepared for emergencies can make a big difference in the outcome.

• Emergency Plan:
  • First Aid Kit: Keep a well-stocked first aid kit on hand.
  • Communication: Have a way to communicate with emergency services, such as a cell phone or two-way radio.
  • Emergency Contact Information: Keep a list of emergency contact information on hand.
  • Evacuation Plan: Have an evacuation plan in case of a fire or other emergency.

Personal Experience:

I once had a minor chainsaw accident while working in a remote area. I was able to treat the injury with the supplies in my first aid kit and contact emergency services using my cell phone. I realized that being prepared for emergencies can make a big difference in the outcome.

Takeaway:

Be prepared for emergencies by having a first aid kit, a way to communicate with emergency services, a list of emergency contact information, and an evacuation plan.

Conclusion: Choosing the Right Saw for Your Needs

Choosing between the Stihl MS 391 and MS 362 ultimately depends on your specific needs and priorities. If you need raw power for felling larger trees and don’t mind a bit of extra weight, the MS 391 is a solid choice. However, if you prioritize maneuverability, fuel efficiency, and user comfort, the MS 362 is the clear winner.

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