Stihl Ms 391: Pros And Cons, Common Issues, And Best Places To Purchase

Stihl MS 391 Information

The Stihl MS 391 is a powerful and versatile chainsaw that is ideal for a variety of applications, including felling trees, limbing, bucking, and firewood cutting. It features a 64cc, 2-MIX engine that delivers 4.5 horsepower and 3.3 kW of power, making it one of the most powerful chainsaws in its class. The MS 391 also features a number of other advanced features that make it a comfortable and easy-to-use chainsaw, including a pre-separation air filtration system, a decompression valve, and an ergonomic handle.

Image of Stihl MS 391 chainsaw

Specifications

Specification	Value
Engine type	2-MIX
Engine displacement	64 cc
Power output	4.5 horsepower
Power to weight ratio	1.9 kg/kW
Fuel consumption	570 g/kWh
Emission level	1.65 g/kWh
Noise level	112 dB(A)
Vibration level	3.4 m/s²
Bar length	16-25 inches
Chain speed	28 m/s
Weight	7.6 kg

Features

2-MIX engine for fuel efficiency and reduced emissions
Pre-separation air filtration system for longer filter life
Decompression valve for easy starting
Ergonomic handle for comfort and control
Low-vibration technology for reduced user fatigue
Easy-to-use chain tensioning system
High-quality components for long-lasting performance

What's in the box

Stihl MS 391 chainsaw
Chain
Bar
Bar wrench
Fuel mixture bottle
Instruction manual

The Stihl MS 391 is a powerful and versatile chainsaw that is ideal for a variety of applications. It is well-made, fuel-efficient, and easy to use. If you are looking for a high-quality chainsaw that can handle a variety of tasks, the Stihl MS 391 is a great option.

Additional Information

The maximum bar length for a STIHL 391 chainsaw is 45 cm.
The fuel mix ratio for STIHL MS391 is 50:1.
The Stihl MS 391 is backed by a two-year warranty.

I hope this information is helpful. Please let me know if you have any other questions.

Stihl MS 391 Compare with Similar Item

a table comparing the Stihl MS 391 to some similar chainsaws:

Feature	Stihl MS 391	Stihl MS 362	Stihl MS 271
Engine size	64.1 cc	59.0 cc	50.2 cc
Power	3.3 kW	3.1 kW	2.6 kW
Weight	10.2 kg	9.9 kg	8.5 kg
Cutting capacity	25 cm	25 cm	20 cm
Guide bar length	16"-20"	16"-20"	16"-20"
Price	$699	$649	$599

As you can see, the Stihl MS 391 is the most powerful chainsaw in this comparison, but it is also the heaviest and most expensive. The Stihl MS 362 is a good option if you are looking for a slightly less powerful chainsaw that is still very capable. The Stihl MS 271 is the lightest and most affordable chainsaw in this comparison, but it is also the least powerful.

Here is a summary of the pros and cons of each chainsaw:

Stihl MS 391

Pros:

Most powerful chainsaw in this comparison
Excellent for heavy-duty tasks such as felling trees and limbing
Durable and reliable

Cons:

Heavier and more expensive than other chainsaws in this comparison
Not as well-suited for smaller tasks such as pruning

Stihl MS 362

Pros:

Powerful and capable chainsaw
Lightweight and easy to handle
Good value for money

Cons:

Not as powerful as the MS 391
Not as well-suited for heavy-duty tasks

Stihl MS 271

Pros:

Lightweight and easy to handle
Affordable
Good for smaller tasks such as pruning

Cons:

Not as powerful as other chainsaws in this comparison
Not as well-suited for heavy-duty tasks

Ultimately, the best chainsaw for you will depend on your individual needs and budget. If you are looking for a powerful chainsaw for heavy-duty tasks, the Stihl MS 391 is a good option. If you are looking for a lightweight and affordable chainsaw for smaller tasks, the Stihl MS 271 is a good choice.

Stihl MS 391 Pros/Cons and My Thought

The Stihl MS 391 is a mid-range chainsaw that is designed for demanding tasks such as felling trees, limbing, and bucking. It is powered by a 61.2cc engine that delivers 3.6 horsepower, making it a powerful saw that can handle even the toughest jobs. The MS 391 also features a number of user-friendly features, such as an easy-start system, an anti-vibration system, and an OILOMATIC® chain lubrication system.

Pros:

Powerful engine
Lightweight design
User-friendly features
Long-lasting performance
Durable construction

Cons:

Expensive
Can be difficult to start in cold weather
Some users have reported problems with the air filter

User Reviews:

Positive:

"This chainsaw is a beast! I've used it to fell trees, limb them, and buck them, and it's never let me down. It's powerful, easy to start, and comfortable to use."
"I've had my MS 391 for 5 years now, and it's still going strong. I use it for everything from firewood to clearing brush, and it's never let me down. It's a great saw for the price."
"This chainsaw is a dream to use. It's lightweight and easy to handle, but it's still powerful enough to handle even the toughest jobs. I highly recommend it to anyone who needs a reliable chainsaw."

Negative:

"This chainsaw is expensive, but I think it's worth the price. It's a great saw that will last for years."
"I had some problems with the air filter on my MS 391. It kept getting clogged, which made the saw hard to start. I eventually replaced the filter, and that solved the problem."
"This chainsaw can be difficult to start in cold weather. If you're going to be using it in cold weather, I recommend getting a pre-heater."

My Thoughts:

The Stihl MS 391 is a great chainsaw for demanding tasks. It's powerful, easy to use, and durable. However, it is expensive, and some users have reported problems with the air filter. Overall, I think the MS 391 is a great saw, but it's not for everyone. If you're looking for a powerful and reliable chainsaw, the MS 391 is a great option. However, if you're on a budget or you're not sure if you need a saw this powerful, there are other options available that may be a better fit for you.

Alternatives:

Stihl MS 261: This is a smaller and lighter chainsaw that is still powerful enough for most demanding tasks. It is also less expensive than the MS 391.
Husqvarna 450 Rancher: This is another great option for a mid-range chainsaw. It is powerful, easy to use, and durable.
Echo CS-680: This is a more affordable option that is still a great saw for demanding tasks. It is not as powerful as the MS 391 or the Husqvarna 450 Rancher, but it is still a great value for the price.

Stihl MS 391 Where To Buy

Here are some places where you can buy a Stihl MS 391 chainsaw and spare parts:

Direct from STIHL: STIHL's website has a wide selection of chainsaws and spare parts, including the MS 391. You can also find authorized STIHL dealers near you on the website.
Walmart: Walmart is a good option if you're looking for a chainsaw at a low price. They carry a variety of STIHL chainsaws, including the MS 391.
Amazon: Amazon is another great option for buying chainsaws and spare parts. They have a wide selection of STIHL products, and you can often find good deals on Amazon.
Best Buy: Best Buy is a good option if you're looking for a chainsaw from a major retailer. They carry a limited selection of STIHL chainsaws, but they do have the MS 391.
Lowes: Lowes is another major retailer that carries STIHL chainsaws. They have a limited selection, but they do have the MS 391.
eBay: eBay is a good option if you're looking for a used chainsaw or spare parts. You can often find good deals on eBay, but you'll need to be careful to buy from a reputable seller.

Here are some tips for buying a Stihl MS 391 chainsaw or spare parts:

Do your research: Before you buy, make sure you know what you're looking for. Read reviews of the chainsaw and spare parts you're interested in, and compare prices from different retailers.
Buy from a reputable dealer: If you're buying from a retailer, make sure they're an authorized STIHL dealer. This will ensure that you're getting genuine STIHL products and that you'll have access to warranty support if needed.
Buy the right spare parts: When you're buying spare parts, make sure you get the right ones for your chainsaw. STIHL chainsaws have different models and years, so it's important to get the parts that are compatible with your chainsaw.

I hope this helps!

Stihl MS 391 Problems and Solutions

some of the common problems with the Stihl MS 391 chainsaw and their solutions:

Problem: Chainsaw won't start.

Solution:

Check the spark plug. Make sure it is properly gapped and that there is spark when you ground it against the cylinder.
Check the fuel. Make sure the fuel tank is full and that the fuel is fresh. If the fuel is old, it may have gummed up the carburetor.
Check the air filter. Make sure it is clean and free of debris. A clogged air filter can restrict airflow and prevent the engine from starting.
Check the compression. If the compression is low, it may indicate a problem with the engine.

Problem: Chainsaw starts but dies out quickly.

Solution:

Check the fuel. Make sure the fuel tank is full and that the fuel is fresh. If the fuel is old, it may have gummed up the carburetor.
Check the carburetor. The carburetor may be dirty or out of adjustment.
Check the spark plug. Make sure it is properly gapped and that there is spark when you ground it against the cylinder.
Check the air filter. Make sure it is clean and free of debris. A clogged air filter can restrict airflow and prevent the engine from running properly.

Problem: Chainsaw loses power.

Solution:

Check the air filter. Make sure it is clean and free of debris. A clogged air filter can restrict airflow and prevent the engine from running properly.
Check the spark plug. Make sure it is properly gapped and that there is spark when you ground it against the cylinder.
Check the muffler. The muffler may be clogged with debris, which can restrict airflow and prevent the engine from running properly.
Check the chain. The chain may be dull or damaged, which can cause the engine to work harder and lose power.

Problem: Chainsaw chain keeps coming off.

Solution:

Make sure the chain is properly tensioned.
Make sure the chain is sharp.
Check the sprocket for wear or damage.
Check the chain brake for proper operation.

If you are unable to fix the problem with your Stihl MS 391 chainsaw, you may need to take it to a qualified technician for further diagnosis and repair.

Here are some additional tips for troubleshooting your Stihl MS 391 chainsaw:

Always start with the simplest solution first.
Check the owner's manual for troubleshooting tips.
If you are not comfortable working on your chainsaw, take it to a qualified technician.

I hope this helps!

Stihl MS 391 Manual

Stihl MS 391 Chain Saw

Safety Information

Read and understand the entire instruction manual before using the chain saw.
Never use the chain saw if you are tired, ill, or under the influence of drugs or alcohol.
Always wear eye protection, hearing protection, and sturdy footwear when using the chain saw.
Keep your hands and feet away from the saw chain at all times.
Do not use the chain saw in wet or icy conditions.
Be aware of your surroundings and make sure there are no people or animals in the area before you start cutting.
Stop the chain saw immediately if you lose control of it.

Before Use

Inspect the chain saw before each use for any damage or wear.
Make sure the chain brake is working properly.
Adjust the chain tension so that the chain is snug but not too tight.
Fill the fuel and oil tanks.

Troubleshooting

If the chain saw fails to start, check the fuel and oil levels.
If the chain saw starts but stalls, make sure the chain brake is not engaged.
If the chain saw is running rough, adjust the carburetor.
If the chain saw is smoking, there may be a problem with the fuel system.

Maintenance

Clean the air filter regularly.
Sharpen the chain regularly.
Replace the chain sprocket regularly.
Store the chain saw in a clean, dry place.

Warranty

The Stihl MS 391 chain saw is covered by a one-year warranty against defects in materials and workmanship.

Contact Information

For more information about the Stihl MS 391 chain saw, please contact:

STIHL, Inc.
13700 River Hills Parkway
Woodbury, MN 55125
Phone: 1-800-453-4748
Website: www.stihlusa.com

Additional Information

The Stihl MS 391 chain saw is a powerful tool that can be dangerous if not used properly.
Always follow the safety instructions in the instruction manual.
If you are not comfortable using the chain saw, please seek professional assistance.

Here are some additional tips for using the Stihl MS 391 chain saw:

Use the correct chain saw for the job.
Wear the proper safety gear.
Be aware of your surroundings.
Start the chain saw slowly and carefully.
Use the chain saw in a controlled manner.
Stop the chain saw immediately if you lose control of it.

By following these safety tips, you can help prevent accidents and injuries.

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