Stihl MS 271 Farm Boss 18-Inch Gas Chainsaw (5 Pro Tips)

Let’s get right to it! I’m going to share my top 5 pro tips for getting the most out of your Stihl MS 271 Farm Boss 18-Inch Gas Chainsaw. This isn’t just about starting the saw; it’s about maximizing its performance, extending its lifespan, and staying safe while you’re at it. I’ve spent years felling trees, bucking logs, and processing firewood, and I’ve learned a few tricks along the way. Forget the fluff; let’s dive into the practical stuff that’ll make a real difference in your woodcutting.

Mastering Your Stihl MS 271 Farm Boss: 5 Pro Tips

The Stihl MS 271 Farm Boss is a workhorse, a reliable chainsaw that’s earned its reputation. But even the best tools benefit from a little extra care and understanding. These tips are designed to elevate your chainsaw game, whether you’re a seasoned logger or a weekend warrior tackling firewood.

1. Unleash the Power: Mastering the Starting Sequence

Starting a cold chainsaw can be frustrating, but with the right technique, it becomes second nature. I’ve seen countless people struggle, yanking on the cord until they’re exhausted. Let’s avoid that.

The Correct Procedure:

1. Choke Engagement: Engage the choke. On the MS 271, this is usually a lever you pull out. This enriches the fuel mixture for the initial start.
2. Pull Until It “Pops”: Pull the starter cord firmly and deliberately until you hear a “pop” or a brief attempt to start. This indicates fuel is reaching the cylinder. Usually, this takes 2 to 5 pulls.
3. Disengage Choke (Half-Choke): Push the choke lever in one notch to the half-choke position. This allows more air into the mixture.
4. Pull to Start: Pull the starter cord again until the engine starts and runs smoothly.
5. Warm-Up: Allow the saw to idle for a short period (30-60 seconds) before engaging the throttle. This allows the engine to reach operating temperature and ensures proper lubrication.

Why This Works:

The choke restricts airflow, creating a richer fuel-air mixture that’s easier to ignite when the engine is cold. The “pop” signals that fuel has reached the combustion chamber. Disengaging the choke (or moving to half-choke) allows the engine to run without flooding.

Common Mistakes to Avoid:

• Over-Choking: Pulling the cord repeatedly with the choke fully engaged can flood the engine. If this happens, remove the spark plug, dry it off, and pull the cord several times with the choke off to clear the cylinder.
• Weak Pulls: A weak, hesitant pull won’t generate enough momentum to start the engine. Use a firm, deliberate pull, keeping your back straight and using your legs for leverage.
• Ignoring the Pop: The “pop” is a crucial indicator. Don’t skip step 3 and continue pulling with the choke fully engaged.

My Personal Experience:

I remember one particularly cold morning trying to start my MS 271 after it had been sitting unused for a couple of weeks. I flooded it within minutes. After removing the spark plug and drying it, I also learned to prime the carburetor by pressing the fuel bulb a few times. That extra bit of fuel made all the difference, and the saw roared to life on the next pull.

Takeaway: Mastering the starting sequence is the foundation of efficient chainsaw operation. Understanding the role of the choke and avoiding common mistakes will save you time, energy, and frustration.

2. Sharpening Secrets: Maintaining a Razor-Sharp Chain

A dull chainsaw is not only inefficient; it’s also dangerous. It requires more force to cut, increasing the risk of kickback and operator fatigue. A sharp chain bites into the wood effortlessly, making your work faster, safer, and more enjoyable.

The Importance of Chain Sharpness:

• Increased Cutting Speed: A sharp chain cuts through wood quickly and efficiently, reducing the time and effort required to complete a task.
• Reduced Kickback Risk: A dull chain is more likely to bind in the wood, increasing the risk of kickback. A sharp chain bites cleanly, minimizing this risk.
• Improved Fuel Efficiency: A sharp chain requires less engine power to cut, resulting in better fuel economy.
• Reduced Operator Fatigue: A sharp chain requires less force to cut, reducing strain on the operator’s arms and back.

Essential Tools for Chain Sharpening:

• Round File: The most common tool for sharpening chainsaw chains. Choose a file size that matches the pitch of your chain (typically 5/32″ for the MS 271).
• File Guide: A file guide helps maintain the correct filing angle and depth, ensuring consistent sharpening.
• Flat File: Used to maintain the depth gauges (rakers) on the chain.
• Depth Gauge Tool: A specialized tool for accurately measuring and adjusting the depth gauges.
• Vise: A small vise to hold the chainsaw bar securely while sharpening.

The Sharpening Process (Step-by-Step):

1. Secure the Bar: Place the chainsaw bar in a vise to hold it securely.
2. Identify the Cutting Angle: Determine the correct cutting angle for your chain (typically marked on the chain or in the chainsaw manual).
3. File Each Cutter: Using the round file and file guide, file each cutter tooth, maintaining the correct angle and depth. File from the inside of the cutter outward. Count the number of strokes per cutter to ensure consistency.
4. Check and Adjust Depth Gauges: Use the depth gauge tool to check the height of the depth gauges (rakers). If they are too high, file them down with the flat file until they are level with the gauge.
5. Rotate the Chain: Rotate the chain and repeat the process for all the cutter teeth.
6. Test the Chain: After sharpening, test the chain by cutting a small piece of wood. The chain should cut smoothly and efficiently.

Advanced Sharpening Techniques:

• Using a Chainsaw Sharpener: Electric chainsaw sharpeners can provide a more precise and consistent sharpening than manual filing.
• Grinding Wheel Sharpening: For heavily damaged chains, a grinding wheel can be used to reshape the cutter teeth. However, this requires specialized equipment and skill.

My Personal Experience:

I once spent an entire day trying to fell a large oak tree with a dull chain. It was an exhausting and frustrating experience. After finally sharpening the chain, the difference was night and day. The saw sliced through the wood effortlessly, and I finished the job in a fraction of the time. That day, I learned the true value of a sharp chain.

Takeaway: A sharp chain is essential for safe and efficient chainsaw operation. Learn the proper sharpening techniques and invest in the necessary tools to maintain your chain’s cutting edge. Regular sharpening will not only improve your cutting performance but also extend the life of your chain and chainsaw.

3. Oiling is Caring: Lubrication for Longevity

Proper lubrication is the lifeblood of your chainsaw. It reduces friction, prevents overheating, and extends the lifespan of the bar, chain, and engine. Neglecting lubrication is a surefire way to damage your saw.

The Importance of Lubrication:

• Reduces Friction: Lubrication reduces friction between the chain and the bar, preventing overheating and wear.
• Prevents Corrosion: Oil helps protect the bar and chain from rust and corrosion.
• Extends Lifespan: Proper lubrication extends the lifespan of the bar, chain, and engine.
• Improves Cutting Performance: A well-lubricated chain cuts more smoothly and efficiently.

Types of Chainsaw Oil:

• Bar and Chain Oil: Specifically formulated to lubricate the bar and chain. It is typically a high-viscosity oil with tackifiers to help it cling to the chain.
• Engine Oil: Used to lubricate the engine. Use the type and weight of oil recommended by the manufacturer (typically a 2-stroke oil mixed with gasoline).

Choosing the Right Oil:

• Bar and Chain 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. Consider using a biodegradable bar and chain oil to reduce environmental impact.
• Engine Oil: Use a 2-stroke oil that meets the specifications of your chainsaw manufacturer. Synthetic 2-stroke oils offer superior lubrication and reduce carbon buildup.

Oiling System Maintenance:

• Check Oil Level: Regularly check the oil level in the bar and chain oil reservoir. Refill as needed.
• Clean Oil Ports: Keep the oil ports on the bar clean and free of debris. Clogged oil ports can restrict oil flow and lead to premature wear.
• Adjust Oil Flow: Some chainsaws have an adjustable oil flow. Adjust the oil flow according to the cutting conditions. Increase the oil flow for heavy cutting or dry wood.
• Inspect Oil Pump: Periodically inspect the oil pump for wear or damage. Replace the pump if necessary.

My Personal Experience:

I learned the hard way about the importance of proper lubrication. I was cutting firewood on a hot summer day and neglected to check the oil level in my chainsaw. The chain overheated and seized up, damaging the bar and chain. I had to replace both, costing me time and money. Now, I make it a habit to check the oil level before every use and to refill it frequently during long cutting sessions.

Takeaway: Proper lubrication is crucial for the longevity and performance of your chainsaw. Use high-quality bar and chain oil and engine oil, and maintain your chainsaw’s oiling system. Regular maintenance will prevent costly repairs and extend the life of your saw.

4. Fueling the Beast: Mixing and Handling Fuel Safely

Chainsaws are powered by a mixture of gasoline and 2-stroke oil. Getting the mixture right is crucial for engine performance and longevity. Improper fuel mixtures can lead to engine damage and reduced power.

The Importance of Correct Fuel Mixture:

• Engine Lubrication: The 2-stroke oil in the fuel mixture lubricates the engine’s internal components, reducing friction and wear.
• Optimal Combustion: The correct fuel mixture ensures optimal combustion, maximizing power and fuel efficiency.
• Prevents Engine Damage: An incorrect fuel mixture can lead to engine damage, such as piston seizure or spark plug fouling.

Recommended Fuel Mixture for Stihl MS 271:

• 50:1 Ratio: This means 50 parts gasoline to 1 part 2-stroke oil. Use high-quality, unleaded gasoline with an octane rating of 89 or higher.

Mixing Fuel Properly:

1. Use a Clean Container: Use a clean, approved fuel container specifically designed for gasoline.
2. Add Oil First: Pour the correct amount of 2-stroke oil into the container. For a 50:1 ratio, use 2.6 ounces of oil per gallon of gasoline.
3. Add Gasoline: Add the gasoline to the container, being careful not to spill any.
4. Mix Thoroughly: Secure the lid on the container and shake vigorously to mix the oil and gasoline.

Fuel Storage and Handling:

• Store Fuel in Approved Containers: Store fuel in approved, tightly sealed containers in a well-ventilated area away from heat, sparks, and open flames.
• Avoid Direct Sunlight: Avoid storing fuel in direct sunlight, as this can cause it to degrade.
• Use Fresh Fuel: Use fresh fuel within 30 days. Old fuel can degrade and cause engine problems.
• Dispose of Old Fuel Properly: Dispose of old fuel properly according to local regulations.

Safety Precautions:

• Mix Fuel Outdoors: Mix fuel outdoors in a well-ventilated area.
• Avoid Smoking: Avoid smoking or using open flames near fuel.
• Wear Protective Gear: Wear gloves and eye protection when handling fuel.
• Clean Up Spills Immediately: Clean up any fuel spills immediately with a absorbent material.

My Personal Experience:

I once used fuel that was several months old in my chainsaw. The engine ran poorly and was difficult to start. After draining the old fuel and replacing it with fresh fuel, the engine ran smoothly again. I learned that using fresh fuel is essential for optimal engine performance.

Takeaway: Mixing and handling fuel safely is crucial for the performance and longevity of your chainsaw. Use the correct fuel mixture, store fuel properly, and follow safety precautions to prevent accidents and engine damage.

5. Safety First: Gear Up and Cut Smart

Chainsaws are powerful tools that can cause serious injury if not used properly. Safety should always be your top priority.

Essential Safety Gear:

• Chainsaw Chaps: These provide protection for your legs, the most vulnerable part of your body when using a chainsaw.
• Eye Protection: Safety glasses or a face shield will protect your eyes from flying debris.
• Hearing Protection: Earplugs or earmuffs will protect your hearing from the loud noise of the chainsaw.
• Gloves: Work gloves will improve your grip and protect your hands from cuts and abrasions.
• Steel-Toed Boots: Steel-toed boots will protect your feet from falling logs and chainsaw injuries.
• Helmet: A helmet will protect your head from falling branches and other hazards.

Safe Cutting Techniques:

• Maintain a Stable Stance: Keep your feet shoulder-width apart and maintain a balanced stance.
• Use Both Hands: Always use both hands to operate the chainsaw.
• Keep the Chain Moving: Never force the chain into the wood. Let the chain do the work.
• Be Aware of Kickback: Understand the causes of kickback and take steps to avoid it.
• Avoid Cutting Overhead: Avoid cutting overhead whenever possible.
• Clear the Work Area: Remove any obstacles from the work area, such as rocks, branches, and debris.
• Plan Your Cuts: Plan your cuts carefully before you start cutting.
• Take Breaks: Take frequent breaks to avoid fatigue.

Understanding and Preventing Kickback:

Kickback is a sudden, uncontrolled movement of the chainsaw bar that can cause serious injury. It occurs when the upper tip of the bar contacts a solid object or when the wood pinches the chain.

Ways to Prevent Kickback:

• Use a Chainsaw with Kickback Reduction Features: Some chainsaws have features that reduce the risk of kickback, such as a chain brake and a low-kickback chain.
• Avoid Cutting with the Upper Tip of the Bar: Be especially careful when cutting with the upper tip of the bar.
• Maintain a Sharp Chain: A sharp chain is less likely to bind in the wood and cause kickback.
• Hold the Chainsaw Firmly: Maintain a firm grip on the chainsaw with both hands.
• Be Aware of Your Surroundings: Be aware of your surroundings and avoid cutting near solid objects.

My Personal Experience:

I witnessed a serious chainsaw accident several years ago when a fellow logger experienced kickback and suffered a severe leg injury. It was a stark reminder of the dangers of using a chainsaw. Since then, I have always made safety my top priority. I wear all the necessary safety gear, use safe cutting techniques, and am always aware of my surroundings.

Takeaway: Safety should always be your top priority when using a chainsaw. Wear all the necessary safety gear, use safe cutting techniques, and be aware of the risks involved. By following these safety precautions, you can reduce the risk of injury and enjoy the benefits of using a chainsaw safely and effectively.

Bonus Tip: Regular Maintenance is Key

Beyond the specific tips above, a consistent maintenance schedule is crucial for keeping your Stihl MS 271 Farm Boss running smoothly for years to come.

Essential Maintenance Tasks:

• Air Filter Cleaning: Clean the air filter regularly to ensure proper airflow to the engine. A dirty air filter can reduce engine power and fuel efficiency. I usually clean mine after every 5-10 hours of use, depending on how dusty the conditions are.
• Spark Plug Inspection: Inspect the spark plug periodically and replace it if it is worn or fouled. A bad spark plug can cause starting problems and poor engine performance.
• Fuel Filter Replacement: Replace the fuel filter annually to prevent debris from entering the carburetor.
• Chain Brake Inspection: Inspect the chain brake regularly to ensure it is functioning properly. The chain brake is a critical safety feature that can prevent serious injury in the event of kickback.
• Bar Maintenance: Keep the bar clean and free of debris. File down any burrs or damage on the bar rails.
• Professional Servicing: Take your chainsaw to a qualified service technician for a tune-up at least once a year.

By following these tips and maintaining your Stihl MS 271 Farm Boss, you’ll be able to tackle any woodcutting task with confidence and safety. Remember, a well-maintained chainsaw is a safe and efficient chainsaw. Now get out there and put these tips to good use!

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