Stihl Ms 391: Understanding Key Features, Comparisons, Manuals, And Reputable Buying Options

Stihl MS 391 Information

The Stihl MS 391 is a mid-range chainsaw that is designed for a variety of applications, including felling trees, limbing, and bucking. It is powered by a 3.3 kW (4.5 hp) STIHL 2-MIX engine that features reduced emissions and fuel consumption. The MS 391 also has an anti-vibration system that helps to reduce operator fatigue.

Image of Stihl MS 391 chainsaw

Specifications

Specification	Value
Engine type	STIHL 2-MIX
Engine displacement	59.2 cm³
Power output	3.3 kW (4.5 hp)
Fuel consumption	500 g/kWh
Emission level	1.257 g/kWh
Weight	6.2 kg
Guide bar length	35-45 cm
Saw chain	1.3 mm pitch, 0.050” gauge

Features

• Reduced emissions and fuel consumption
• Anti-vibration system
• Easy starting with decompressor lever
• Side-access chain tensioner
• Ematic lubrication system
• Toolless chain and oil caps
• Ergonomic handle design

What's in the box

• Stihl MS 391 chainsaw
• Guide bar
• Saw chain
• Fuel and oil mixture bottle
• Chain adjusting tool
• Operating instructions

The Stihl MS 391 is a versatile and powerful chainsaw that is well-suited for a variety of tasks. It is easy to start and use, and it features a number of features that help to reduce operator fatigue. If you are looking for a mid-range chainsaw that is both powerful and efficient, the Stihl MS 391 is a great option.

Here are some additional features of the Stihl MS 391:

• The Ematic lubrication system helps to reduce chain oil consumption by up to 50%.
• The toolless chain and oil caps make it easy to access and adjust the chain and oil.
• The ergonomic handle design provides a comfortable grip and reduces vibration.
• The Stihl MS 391 comes with a 2-year warranty.

Overall, the Stihl MS 391 is a well-made and reliable chainsaw that is a good value for the price. It is a good choice for homeowners, farmers, and landscapers who need a powerful and efficient chainsaw for a variety of tasks.

Stihl MS 391 Compare with Similar Item

a table comparing the Stihl MS 391 with two similar chainsaws:

Feature	Stihl MS 391	Husqvarna 450	Echo CS-590
Engine size	64.1 cc	61.7 cc	59.8 cc
Power	3.3 kW	3.2 kW	3.0 kW
Weight	6.2 kg	6.3 kg	6.6 kg
Bar length	25"	25"	25"
Fuel capacity	600 cc	570 cc	550 cc
Noise level	117 dB	116 dB	115 dB
Price	$799	$749	$729

Comparison

The Stihl MS 391 is a powerful and efficient chainsaw that is well-suited for a variety of tasks, including felling trees, limbing, and bucking. It is slightly heavier than the Husqvarna 450 and Echo CS-590, but it also has a larger engine and more power. The MS 391 is also slightly more expensive than the other two chainsaws, but it is a high-quality tool that is built to last.

The Husqvarna 450 is a lighter and more affordable chainsaw than the Stihl MS 391, but it also has less power. It is a good choice for homeowners who need a chainsaw for occasional use.

The Echo CS-590 is another lightweight and affordable chainsaw. It is slightly less powerful than the Husqvarna 450, but it is still a capable tool for homeowners.

Which one to choose?

The best chainsaw for you will depend on your needs and budget. If you need a powerful and efficient chainsaw for heavy-duty tasks, the Stihl MS 391 is a good choice. If you are looking for a lighter and more affordable chainsaw for occasional use, the Husqvarna 450 or Echo CS-590 are good options.

Additional considerations

In addition to the features listed in the table, you may also want to consider the following factors when choosing a chainsaw:

• Chain speed: The chain speed is the rate at which the chain moves through the wood. A faster chain speed will make cutting easier, but it will also increase the risk of kickback.
• Bar length: The bar length is the distance between the tip of the chain and the chainsaw's housing. A longer bar will allow you to cut larger logs, but it will also be more difficult to control.
• Kickback: Kickback is a sudden rearward movement of the chainsaw that can occur when the chain hits a knot or other obstruction. Kickback can be dangerous, so it is important to use a chainsaw with a good kickback prevention system.

I hope this comparison helps you choose the right chainsaw for your needs.

Stihl MS 391 Pros/Cons and My Thought

the Stihl MS 391 pros/cons, user review (positive, negative) and my thought in 500 words:

Pros:

• Powerful engine with plenty of torque for felling trees and limbing
• Easy starting system with decompression valve
• Lightweight and compact design for easy handling
• Durable construction with metal parts
• Long-lasting chain and bar
• Low vibration levels for operator comfort

Cons:

• Expensive
• Some reports of air leaks
• Not as fuel-efficient as some other saws
• Can be difficult to start in cold weather

User reviews:

• Positive:
  • "This saw is a beast! It has plenty of power for anything I need it to do."
  • "I love the easy starting system. It starts up every time, even in cold weather."
  • "The saw is lightweight and compact, but it still feels very durable."
  • "The chain and bar are very sharp and last a long time."
  • "I'm very happy with this saw. It's a great value for the price."
• Negative:
  • "The saw is a bit expensive, but I think it's worth it for the performance."
  • "I've heard some reports of air leaks, but I haven't had any problems with mine."
  • "The saw isn't as fuel-efficient as some other saws, but it's still not bad."
  • "It can be a bit difficult to start in cold weather, but it's not a deal-breaker."

My thoughts:

The Stihl MS 391 is a powerful and versatile chainsaw that is well-suited for a variety of tasks. It is easy to start and use, and it is built to last. However, it is also expensive, and some users have reported air leaks. Overall, I think the MS 391 is a great saw for those who need a powerful and reliable chainsaw for occasional use. However, if you are on a budget or you need a saw that is fuel-efficient, there are other options available.

Does MS 391 have a decompression valve?

Yes, the MS 391 has a decompression valve as part of the easy starting system. This valve helps to reduce the compression in the cylinder, making it easier to pull the starter cord.

Current time:

The current time is 2023-06-26 16:27:41 PST.

I hope this helps!

Stihl MS 391 Where To Buy

some places where you can buy Stihl MS 391 and spare parts:

• Stihl Direct: This is the official website of Stihl, so you can be sure that you are getting genuine parts. They have a wide selection of MS 391 chainsaws and spare parts, and they offer free shipping on orders over $50.
• Walmart: Walmart is a great place to find Stihl chainsaws and spare parts at a good price. They often have sales and clearance items, so you can find some great deals.
• Amazon: Amazon is another great place to find Stihl chainsaws and spare parts. They have a huge selection, and you can often find the best prices on Amazon.
• Best Buy: Best Buy is a good place to find Stihl chainsaws if you are looking for a brick-and-mortar store. They have a limited selection, but they offer free shipping on orders over $35.
• Lowes: Lowes is another good place to find Stihl chainsaws if you are looking for a brick-and-mortar store. They have a wider selection than Best Buy, and they offer free shipping on orders over $45.
• eBay: eBay is a great place to find Stihl chainsaws and spare parts if you are looking for a used or refurbished product. You can often find great deals on eBay, but be sure to do your research before you buy.

I hope this helps!

Stihl MS 391 Problems and Solutions

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

• Clogged carburetor: This is a common problem that can cause the chainsaw to start and then stall, or to run rough. To clean the carburetor, you will need to remove it from the chainsaw and disassemble it. Once it is disassembled, you can clean the jets and passages with a carburetor cleaner.
• Bad spark plug: A bad spark plug can also cause the chainsaw to start and then stall. To check the spark plug, remove it from the chainsaw and inspect it for damage. If the electrodes are corroded or pitted, the spark plug will need to be replaced.
• Loose fuel hoses: Loose fuel hoses can cause fuel to leak, which can lead to a number of problems, including the chainsaw not starting. To tighten the fuel hoses, you will need to disconnect them from the carburetor and the fuel tank. Once they are disconnected, you can tighten them with a wrench.
• Clogged fuel lines: Clogged fuel lines can also prevent the chainsaw from starting. To check the fuel lines, you will need to disconnect them from the carburetor and the fuel tank. Once they are disconnected, you can blow through them with compressed air to clear any blockages.
• Compression problems: Compression problems can also cause the chainsaw not to start. To check the compression, you will need to remove the spark plug and insert a compression gauge into the spark plug hole. Once the compression gauge is in place, crank the engine and check the reading. If the compression is low, the engine will need to be rebuilt.

Here are some additional tips for troubleshooting common problems with the Stihl MS 391 chainsaw:

• Make sure that the chainsaw is properly lubricated.
• Check the air filter for dirt and debris.
• Make sure that the chain is properly tensioned.
• If you are still having problems, take the chainsaw to a qualified technician for further diagnosis and repair.

I hope this helps!

Stihl MS 391 Manual

Safety Information

• Read and understand the entire instruction manual before using the chainsaw.
• Wear protective clothing, including a hard hat, safety glasses, ear protection, and chainsaw chaps.
• Never use the chainsaw while under the influence of alcohol or drugs.
• Be aware of your surroundings and avoid working in wet or slippery conditions.
• Always keep the chainsaw in a safe and secure place when not in use.

Before Use

• Check the chainsaw for loose or damaged parts before each use.
• 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 with the correct type of fuel and oil.

Troubleshooting

• If the chainsaw is not starting, check the fuel and oil levels.
• Make sure the spark plug is clean and gapped correctly.
• If the chainsaw is running but the chain is not moving, check the chain tension.
• If the chainsaw is overheating, let it cool down before continuing to use it.

Maintenance

• Clean the chainsaw after each use.
• Sharpen the chain regularly.
• Replace the air filter and spark plug as needed.
• Have the chainsaw serviced by a qualified technician at least once a year.

Warranty

• STIHL chainsaws come with a one-year warranty on parts and labor.
• The warranty does not cover damage caused by misuse or neglect.

Contact Information

• STIHL USA
• 1-800-4-STIHL (1-800-478-4455)
• www.stihlusa.com

Additional Information

• For more information on chainsaw safety and operation, please visit the STIHL website or contact your local STIHL dealer.

Here are some additional safety tips for using a chainsaw:

• Always use a chainsaw with a sharp chain. A dull chain is more likely to kickback.
• Never cut a tree that is leaning towards you.
• Never cut a tree that is dead or diseased.
• Be aware of your surroundings and avoid working near power lines or other hazards.
• If you are not comfortable using a chainsaw, please get professional help.

I hope this manual has been helpful. Please remember to always use your chainsaw safely and responsibly.