Stihl MS390 Chainsaw: Power & Performance Compared (5 Key Insights)

In our pursuit of smart living, efficiency and self-reliance have become paramount. Whether you’re aiming to heat your home with sustainably sourced firewood, manage a small woodlot, or tackle occasional tree maintenance, understanding the tools at your disposal is crucial. The Stihl MS390 chainsaw, a workhorse in the world of woodcutting, often comes up in discussions. The user intent behind searching for “Stihl MS390 Chainsaw: Power & Performance Compared (5 Key Insights)” is likely a desire to make an informed decision about purchasing, using, or maintaining this particular model. They want to understand its strengths, weaknesses, and how it stacks up against other chainsaws.

Stihl MS390: Unveiling the Power and Performance

The Stihl MS390 is a mid-range chainsaw designed for both professional and homeowner use. It’s known for its robust engine, decent power-to-weight ratio, and overall reliability. However, like any tool, it has its pros and cons. Let’s delve into the key aspects that define its performance.

1. Engine and Power Output

The heart of the MS390 is its 64.1 cc two-stroke engine. This engine delivers around 4.4 brake horsepower (bhp), which is sufficient for felling medium-sized trees, bucking logs, and handling general firewood duties.

Technical Specs:

  • Engine Displacement: 64.1 cc
  • Power Output: 4.4 bhp (3.2 kW)
  • Engine Type: Two-stroke, single-cylinder
  • Fuel Tank Capacity: 0.68 liters (23 fl. oz.)
  • Oil Tank Capacity: 0.36 liters (12.2 fl. oz.)

My Experience:

I remember using the MS390 to fell a stand of mature oak trees on my property. The engine had enough grunt to power through the 16-inch diameter trunks, although it did bog down a bit on the larger ones. For trees exceeding 20 inches, I would recommend a more powerful saw.

Insight: The MS390’s engine is powerful enough for most tasks around the home, but for heavy-duty professional logging, a larger saw is more appropriate.

2. Weight and Handling

The MS390 weighs approximately 13.9 lbs (6.3 kg) without the bar and chain. While this isn’t the lightest chainsaw on the market, it’s manageable for most users. The ergonomic design and anti-vibration system contribute to comfortable handling, even during extended use.

Technical Specs:

  • Weight (without bar and chain): 13.9 lbs (6.3 kg)
  • Guide Bar Lengths: 16″, 18″, 20″
  • Chain Pitch: 3/8″
  • Chain Gauge: .050″

My Experience:

I’ve found that the weight of the MS390 is a good compromise between power and maneuverability. I can use it for several hours without experiencing excessive fatigue. However, for overhead work, a lighter saw would be preferable.

Insight: Consider the type of work you’ll be doing most often when evaluating the weight of a chainsaw. For ground-level tasks, a slightly heavier saw can be acceptable, but for climbing or overhead work, weight is a critical factor.

3. Cutting Performance

The MS390’s cutting performance is determined by its engine power, chain speed, and the type of chain used. With a sharp chain, it can efficiently cut through both softwood and hardwood.

Factors Affecting Cutting Performance:

  • Chain Sharpness: A dull chain will significantly reduce cutting speed and increase the risk of kickback.
  • Chain Type: Different chain types are designed for different applications. For example, ripping chains are designed for cutting with the grain, while crosscut chains are designed for cutting across the grain.
  • Wood Type: Hardwoods like oak and maple are more difficult to cut than softwoods like pine and fir.
  • Moisture Content: Green wood (wood with high moisture content) is more difficult to cut than seasoned wood (wood that has been dried).

My Experience:

I’ve experimented with different chain types on the MS390. I found that a full chisel chain provides the fastest cutting speed, but it dulls more quickly than a semi-chisel chain. For general firewood cutting, I prefer a semi-chisel chain because it offers a good balance of cutting speed and durability.

Insight: Investing in a good quality chain sharpener is essential for maintaining optimal cutting performance. A sharp chain will not only cut faster but also reduce strain on the engine and improve fuel efficiency.

4. Reliability and Durability

Stihl is known for producing reliable and durable chainsaws, and the MS390 is no exception. With proper maintenance, it can provide years of service.

Key Factors Affecting Reliability:

  • Regular Maintenance: This includes cleaning the air filter, spark plug, and carburetor; sharpening the chain; and lubricating the bar and chain.
  • Fuel Quality: Using fresh, high-quality fuel is essential for preventing engine problems.
  • Proper Storage: Storing the chainsaw in a dry place will prevent rust and corrosion.

My Experience:

I’ve owned my MS390 for over 10 years, and it’s still running strong. The key to its longevity has been regular maintenance. I always clean the air filter after each use, and I sharpen the chain every few hours of cutting.

Insight: Don’t neglect maintenance! Regular maintenance will not only extend the life of your chainsaw but also improve its performance and reduce the risk of accidents.

5. Safety Features

The MS390 is equipped with several safety features designed to protect the operator, including:

  • Chain Brake: This stops the chain almost instantly in the event of kickback.
  • Throttle Lockout: This prevents accidental acceleration.
  • Chain Catcher: This catches the chain if it breaks or comes off the bar.
  • Anti-Vibration System: This reduces fatigue and improves control.

Safety Precautions:

  • Always wear appropriate personal protective equipment (PPE), including a helmet, eye protection, hearing protection, gloves, and chainsaw chaps.
  • Never operate a chainsaw when you are tired or under the influence of drugs or alcohol.
  • Be aware of your surroundings and avoid cutting in hazardous conditions.
  • Follow the manufacturer’s instructions for safe operation and maintenance.

My Experience:

I’ve had a few close calls while using chainsaws, and I’m grateful for the safety features that have prevented serious injuries. I always wear full PPE, and I make sure to inspect my chainsaw before each use.

Insight: Safety should always be your top priority. Take the time to learn how to operate your chainsaw safely, and always wear appropriate PPE.

Comparing the MS390 to Other Chainsaws

To fully understand the MS390’s strengths and weaknesses, it’s helpful to compare it to other chainsaws in its class.

MS390 vs. Stihl MS271 Farm Boss

The MS271 Farm Boss is another popular mid-range chainsaw from Stihl. It’s slightly less powerful than the MS390, but it’s also lighter and more fuel-efficient.

Key Differences:

Feature Stihl MS390 Stihl MS271 Farm Boss
Engine Size 64.1 cc 50.2 cc
Power Output 4.4 bhp 3.5 bhp
Weight 13.9 lbs 12.3 lbs
Price (approx.) $600 $500

My Recommendation:

If you need maximum power for felling larger trees, the MS390 is the better choice. However, if you’re looking for a lighter, more fuel-efficient saw for general use, the MS271 Farm Boss is a good option.

MS390 vs. Husqvarna 455 Rancher

The Husqvarna 455 Rancher is a comparable chainsaw to the MS390, offering similar power and features.

Key Differences:

Feature Stihl MS390 Husqvarna 455 Rancher
Engine Size 64.1 cc 55.5 cc
Power Output 4.4 bhp 3.5 bhp
Weight 13.9 lbs 12.8 lbs
Price (approx.) $600 $550

My Recommendation:

The MS390 has a more powerful engine, but the Husqvarna 455 Rancher is slightly lighter and often more readily available at a lower price. Ultimately, the best choice depends on your personal preferences and budget. I would recommend trying both saws before making a decision.

MS390 vs. Battery-Powered Chainsaws

Battery-powered chainsaws have become increasingly popular in recent years, offering several advantages over gas-powered models, including lower noise levels, zero emissions, and easier starting. However, they typically lack the power and run time of gas-powered chainsaws.

Key Differences:

Feature Stihl MS390 Battery-Powered Chainsaw
Power Output 4.4 bhp Varies
Run Time Unlimited Limited
Noise Level High Low
Emissions High Zero
Price (approx.) $600 $300 – $800

My Recommendation:

If you need a chainsaw for occasional use around the home, a battery-powered model may be a good option. However, if you need a chainsaw for demanding tasks or extended use, a gas-powered model like the MS390 is still the best choice.

Practical Applications: Using the MS390 for Wood Processing and Firewood Preparation

The MS390 is a versatile chainsaw that can be used for a variety of wood processing and firewood preparation tasks. Let’s explore some specific examples.

Felling Trees

Felling trees is a dangerous task that should only be performed by experienced individuals. However, with proper training and precautions, the MS390 can be used to safely fell trees up to a certain size.

Step-by-Step Guide:

  1. Assess the Tree: Before felling a tree, carefully assess its size, lean, and any potential hazards, such as dead branches or power lines.
  2. Plan Your Escape Route: Identify a clear escape route that is free of obstacles.
  3. Make a Notch: Cut a notch on the side of the tree in the direction you want it to fall. The notch should be about one-third of the tree’s diameter.
  4. Make a Back Cut: Cut a back cut on the opposite side of the tree, slightly above the notch. Leave a hinge of wood to control the direction of the fall.
  5. Wedge (If Necessary): If the tree doesn’t start to fall on its own, use a wedge to help push it over.
  6. Retreat: Once the tree starts to fall, retreat along your escape route.

Safety Considerations:

  • Never fell a tree alone. Always have a spotter present.
  • Be aware of the wind direction.
  • Avoid felling trees in wet or icy conditions.

My Experience:

I once misjudged the lean of a tree and it started to fall in the wrong direction. Fortunately, I was able to react quickly and avoid being hit. This experience taught me the importance of careful planning and constant vigilance when felling trees.

Bucking Logs

Bucking logs involves cutting felled trees into smaller, more manageable lengths. The MS390 is well-suited for this task.

Step-by-Step Guide:

  1. Support the Log: Place the log on a solid surface, such as a log pile or a sawbuck.
  2. Position Yourself: Stand to the side of the log, with your feet firmly planted.
  3. Make the Cut: Use a smooth, controlled motion to cut through the log.
  4. Avoid Pinching: If the saw starts to pinch, stop cutting and use a wedge to open the cut.

Safety Considerations:

  • Always wear appropriate PPE.
  • Be aware of the risk of kickback.
  • Avoid cutting logs that are under tension.

My Experience:

I’ve found that using a sawbuck makes bucking logs much easier and safer. A sawbuck provides a stable platform for the log and allows you to cut it at a comfortable height.

Splitting Firewood

Splitting firewood is the process of breaking logs into smaller pieces that are suitable for burning in a fireplace or wood stove. While an axe can be used for this task, a log splitter can significantly increase efficiency, especially when dealing with large or knotty logs.

Using an Axe:

  1. Choose a Safe Location: Select a clear, level area free of obstructions.
  2. Position the Log: Place the log on a chopping block. Ensure the log is stable and won’t roll.
  3. Stance: Stand with your feet shoulder-width apart, maintaining a balanced stance.
  4. Grip: Grip the axe firmly with both hands. Your dominant hand should be closer to the axe head for more control.
  5. Swing: Raise the axe above your head, keeping your back straight and your core engaged.
  6. Strike: Bring the axe down with force, aiming for the center of the log.
  7. Follow Through: Allow the axe to follow through the log. If it doesn’t split on the first attempt, reset and try again.
  8. Safety: Always wear safety glasses and gloves. Be aware of your surroundings and ensure no one is within striking distance.

Using a Log Splitter:

  1. Safety First: Always wear safety glasses and gloves. Review the log splitter’s manual before operation.
  2. Positioning: Place the log splitter on a level surface. Ensure the area is clear of obstructions.
  3. Loading the Log: Place the log securely on the splitter’s platform, aligning it with the splitting wedge. The log should be stable and not wobble.
  4. Activating the Splitter: Use the operating lever or button to activate the hydraulic ram. Apply steady pressure to push the log against the wedge.
  5. Splitting: Observe the log as it splits. If the log is too tough or has knots, adjust the position or try a different log.
  6. Retrieving Split Wood: Once the log is split, retract the ram and remove the split pieces. Stack the firewood neatly.
  7. Maintenance: Regularly check hydraulic fluid levels and lubricate moving parts according to the manufacturer’s instructions.

My Experience:

I used to split all my firewood with an axe, but after switching to a hydraulic log splitter, my productivity increased dramatically. I can now split a cord of wood in a fraction of the time it used to take. The log splitter reduces strain on my body and makes the job much easier. Splitting knotty oak was a nightmare with the axe, but the hydraulic splitter handles it with ease.

Insight: A log splitter is a worthwhile investment if you process a large amount of firewood each year. It will save you time, energy, and reduce the risk of injury.

Debarking Logs

Debarking logs involves removing the bark from the wood. This can be done for aesthetic reasons or to prevent insect infestation.

Methods of Debarking:

  • Hand Tools: A drawknife or spud can be used to manually remove the bark.
  • Power Tools: A chainsaw or debarking machine can be used to remove the bark more quickly.

My Experience:

I’ve used both hand tools and power tools for debarking logs. I find that hand tools are more precise, but power tools are faster, especially when dealing with large logs. A chainsaw can be used carefully to score the bark and then pry it off.

Insight: The best method for debarking logs depends on the size and type of logs, as well as your personal preferences.

Drying and Stacking Firewood

Once the firewood has been split, it needs to be dried before it can be burned. Seasoned wood burns more efficiently and produces less smoke than green wood.

Drying Methods:

  • Air Drying: This is the most common method of drying firewood. It involves stacking the wood in a well-ventilated area and allowing it to dry naturally.
  • Kiln Drying: This is a faster method of drying firewood, but it requires specialized equipment.

Stacking Techniques:

  • Rick Method: This involves stacking the wood in rows, with each row leaning slightly inward.
  • Holz Hausen: This is a circular stacking method that promotes good air circulation.

My Experience:

I’ve found that air drying is the most cost-effective method for drying firewood. I stack my wood in a sunny, well-ventilated area, and I allow it to dry for at least six months. I prefer the rick method for stacking because it’s easy to build and provides good air circulation. I aim for a moisture content of around 20% before burning the wood.

Insight: Proper drying and stacking are essential for producing high-quality firewood.

Strategic Insights: Optimizing Your Wood Processing Workflow

Beyond the specific tasks, optimizing your overall wood processing workflow can significantly increase efficiency and reduce costs.

Woodlot Management

If you have access to a woodlot, sustainable management practices can ensure a continuous supply of firewood.

Key Practices:

  • Selective Harvesting: Only harvest mature or diseased trees.
  • Thinning: Remove overcrowded trees to promote the growth of healthier trees.
  • Replanting: Plant new trees to replace those that have been harvested.

My Experience:

I’ve implemented selective harvesting and thinning practices in my woodlot. This has not only provided me with a sustainable supply of firewood but also improved the overall health and biodiversity of the forest.

Tool Maintenance and Sharpening

Regularly maintaining and sharpening your tools will improve their performance and extend their lifespan.

Key Practices:

  • Clean Your Tools After Each Use: Remove dirt, sawdust, and sap.
  • Sharpen Your Chainsaw Chain Regularly: A sharp chain will cut faster and reduce strain on the engine.
  • Lubricate Moving Parts: Keep moving parts lubricated to prevent wear and tear.

My Experience:

I’ve learned the hard way that neglecting tool maintenance can lead to costly repairs and reduced productivity. I now make it a habit to clean and sharpen my tools after each use.

Safety Training and Certification

If you plan to perform professional logging or wood processing, consider obtaining safety training and certification.

Benefits of Certification:

  • Improved Safety Knowledge and Skills
  • Compliance with Industry Standards
  • Increased Credibility

My Experience:

I obtained my chainsaw safety certification several years ago, and it has significantly improved my safety awareness and skills. I highly recommend it to anyone who uses chainsaws regularly.

Case Study: From Forest to Fireplace – A Sustainable Firewood Project

Let me share a case study from my own experiences, detailing the process of sustainably harvesting and processing firewood from my woodlot.

Project Goal: To sustainably harvest and process enough firewood to heat my home for the winter.

Step 1: Woodlot Assessment

I began by assessing my woodlot to identify mature, diseased, or fallen trees that could be harvested without negatively impacting the forest’s health. This involved walking the property, marking trees, and estimating the volume of wood available. I also identified areas that needed thinning to promote the growth of younger trees.

Step 2: Felling and Bucking

Using the Stihl MS390, I carefully felled the selected trees, ensuring they fell in a safe direction and avoiding damage to surrounding vegetation. I then bucked the logs into manageable lengths, typically 16-18 inches, suitable for my wood stove.

Step 3: Debarking (Partial)

For certain species like oak, I partially debarked the logs to speed up the drying process and reduce the risk of insect infestation. This involved using a drawknife to remove strips of bark along the length of the logs.

Step 4: Splitting

The logs were then split using a hydraulic log splitter. This was particularly crucial for the larger oak logs, which would have been extremely difficult to split by hand.

Step 5: Stacking and Drying

The split firewood was stacked in ricks in a sunny, well-ventilated area. I ensured the stacks were elevated slightly off the ground to promote air circulation. The wood was allowed to dry for approximately 8 months, from spring to late fall, to achieve a moisture content of around 20%.

Step 6: Monitoring Moisture Content

Throughout the drying process, I regularly monitored the moisture content of the wood using a moisture meter. This ensured the wood was properly seasoned before being burned.

Step 7: Bringing the Firewood Home

In the late fall, the seasoned firewood was transported to my home and neatly stacked under a covered woodshed, ready for the winter heating season.

Results:

This project resulted in a sustainable supply of firewood that effectively heated my home throughout the winter. The selective harvesting and thinning practices also improved the health and biodiversity of my woodlot.

Lessons Learned:

Here are some practical next steps you can take:

  1. Assess Your Needs: Determine the type and amount of wood processing you’ll be doing. This will help you choose the right chainsaw and other tools.
  2. Research and Compare Chainsaws: Compare the Stihl MS390 to other models in its class, considering factors such as power, weight, features, and price.
  3. Invest in Safety Gear: Purchase appropriate personal protective equipment (PPE), including a helmet, eye protection, hearing protection, gloves, and chainsaw chaps.
  4. Learn Basic Chainsaw Operation and Maintenance: Take a chainsaw safety course and familiarize yourself with the manufacturer’s instructions.
  5. Start Small: Begin with simple tasks, such as bucking small logs or splitting firewood.
  6. Practice Regularly: The more you practice, the more proficient you’ll become.
  7. Seek Expert Advice: Don’t hesitate to ask for help from experienced woodcutters or arborists.
  8. Continuously Improve Your Skills: Stay up-to-date on the latest techniques and safety practices.

By following these steps, you can safely and effectively utilize the Stihl MS390 to process wood and prepare firewood, contributing to a more sustainable and self-reliant lifestyle. Remember, safety always comes first, and with proper planning and execution, you can enjoy the rewards of working with wood for years to come.

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