Unraveling Stihl Ms 391: From Full Specifications To Potential Issues

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 4.4 horsepower, providing plenty of power for demanding tasks. The MS 391 also features a number of features that make it easy to start and operate, including a decompression valve, an easy-start primer, and a vibration-dampened handle.

Image of Stihl MS 391 chainsaw

Specifications

Specification	Value
Engine type	2-MIX
Engine displacement	64cc
Horsepower	4.4 hp
Bar length	16-25 inches
Chain speed	25.2 m/s
Weight	11.3 kg
Fuel consumption	535 g/kWh
Noise level	112 dB(A)

Features

• 2-MIX engine for fuel efficiency and reduced emissions
• Decompression valve for easy starting
• Easy-start primer for quick and easy starts
• Vibration-dampened handle for operator comfort
• Low-vibration technology for reduced hand fatigue
• Pre-separation air filtration system for extended filter life
• Quick-release chain tensioner for easy chain adjustments
• Ergonomic throttle trigger for precise control
• Low-kickback chain for added safety

What's in the box

• Stihl MS 391 chainsaw
• 16-inch guide bar
• .325-inch chain
• Chain oiler
• Tool kit
• Owner's manual

The Stihl MS 391 is a powerful and versatile chainsaw that is sure to meet the needs of even the most demanding users. It is a great choice for farmers, ranchers, arborists, and anyone else who needs a reliable and efficient chainsaw.

Here are some additional benefits of the Stihl MS 391:

• It is easy to maintain. The air filter and spark plug are easily accessible, and the chain can be tensioned quickly and easily.
• It is durable. The MS 391 is made from high-quality materials and construction, and it is designed to withstand the rigors of everyday use.
• It is backed by a one-year warranty. This gives you peace of mind knowing that your chainsaw is covered in case of any problems.

If you are looking for a powerful, versatile, and reliable chainsaw, the Stihl MS 391 is a great option. It is sure to meet your needs and exceed your expectations.

Stihl MS 391 Compare with Similar Item

a table comparison of the Stihl MS 391 and two similar chainsaws:

Feature	Stihl MS 391	Husqvarna 359	Echo CS-590
Engine displacement	64.1 cc	65.6 cc	61.2 cc
Power output	3.9 kW	4.1 kW	3.7 kW
Weight	6.2 kg	6.4 kg	6.3 kg
Bar length	25"	25"	25"
Fuel capacity	560 ml	620 ml	600 ml
Oil capacity	350 ml	350 ml	350 ml
Price	$599	$649	$629

Comparison

The Stihl MS 391 is a mid-range chainsaw that is well-suited for heavy-duty tasks such as felling trees and limbing. It is powered by a 64.1 cc engine that produces 3.9 kW of power. The MS 391 is also relatively lightweight, making it easy to handle for extended periods of time.

The Husqvarna 359 is a similar chainsaw that is also powered by a 65.6 cc engine. However, the 359 produces slightly more power than the MS 391, at 4.1 kW. The 359 is also slightly heavier, at 6.4 kg.

The Echo CS-590 is a budget-friendly chainsaw that is powered by a 61.2 cc engine. The CS-590 produces 3.7 kW of power, which is slightly less than the MS 391 and 359. However, the CS-590 is also significantly lighter, at 6.3 kg.

Conclusion

The Stihl MS 391 is a good choice for those who are looking for a powerful and versatile chainsaw. It is also relatively lightweight, making it easy to handle for extended periods of time. However, the MS 391 is not the cheapest chainsaw on the market.

The Husqvarna 359 is a similar chainsaw that offers slightly more power and a longer bar length. However, the 359 is also slightly heavier.

The Echo CS-590 is a budget-friendly chainsaw that is a good option for those who are looking for a lightweight and affordable chainsaw. However, the CS-590 does not offer as much power as the MS 391 or 359.

Ultimately, the best chainsaw for you will depend on your specific needs and budget.

Stihl MS 391 Pros/Cons and My Thought

The Stihl MS 391 is a powerful and versatile chainsaw that is well-suited for a variety of tasks, including felling trees, bucking logs, and cutting firewood. It features a 64.1 cc engine that delivers 4.4 hp, providing plenty of power for demanding applications. The MS 391 is also relatively lightweight, weighing in at 13.67 pounds, making it easy to maneuver.

Here are some of the pros and cons of the Stihl MS 391:

Pros:

• Powerful engine
• Lightweight design
• Easy to maneuver
• Durable construction
• Long lifespan
• Low fuel consumption
• Low emissions

Cons:

• Relatively expensive
• Some users have reported problems with the air filter
• Not as easy to start as some other chainsaws

Here are some user reviews of the Stihl MS 391:

Positive reviews:

• "This chainsaw is a beast! It's powerful enough to fell even the largest trees, but it's still lightweight enough to use for extended periods of time."
• "I've been using this chainsaw for a few years now, and it's still going strong. It's been through a lot, but it's never let me down."
• "This is the best chainsaw I've ever owned. It's powerful, easy to use, and built to last."

Negative reviews:

• "The air filter is a bit of a pain to replace."
• "It can be a bit difficult to start on cold days."
• "It's a bit more expensive than some other chainsaws."

Overall, the Stihl MS 391 is a great chainsaw for those who need a powerful and versatile tool for demanding applications. It's well-built, fuel-efficient, and low-emissions. However, it is relatively expensive and some users have reported problems with the air filter.

My thoughts:

I think the Stihl MS 391 is a great chainsaw for those who need a powerful and versatile tool for demanding applications. It's well-built, fuel-efficient, and low-emissions. However, it is relatively expensive and some users have reported problems with the air filter. If you're looking for a high-quality chainsaw that will last for years to come, the Stihl MS 391 is a great option. However, if you're on a budget or you're not sure if you'll need a chainsaw for heavy-duty tasks, you may want to consider a less expensive model.

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 products. They have a wide selection of MS 391 chainsaws and spare parts, and they offer free shipping on orders over $49.
• Walmart: Walmart is a great place to find Stihl chainsaws and spare parts at a competitive price. They often have sales and discounts, and you can often find the MS 391 on clearance.
• Amazon: Amazon is another great option for finding Stihl chainsaws and spare parts. They have a wide selection of products, and you can often find the MS 391 at a lower price than other retailers.
• Best Buy: Best Buy is a good option if you are looking for a Stihl chainsaw in a brick-and-mortar store. They have a limited selection of products, but they often have sales and promotions.
• Lowes: Lowes is another good option for finding Stihl chainsaws in a brick-and-mortar store. They have a wider selection of products than Best Buy, but they don't always have the best prices.
• eBay: eBay is a good option if you are looking for a used Stihl chainsaw or spare parts. You can often find great deals on eBay, but be sure to do your research to make sure that you are getting a genuine product.

I hope this helps!

Stihl MS 391 Problems and Solutions

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

Starting problems

• Check the spark plug. If the spark plug is dirty or fouled, it will not create a spark, which will prevent the chainsaw from starting. Clean or replace the spark plug as needed.
• Check the fuel. Make sure that the fuel in the chainsaw is fresh and that the fuel mixture is correct. Old or stale fuel can cause starting problems.
• Check the air filter. A dirty air filter can restrict airflow to the engine, which can also cause starting problems. Clean or replace the air filter as needed.
• Check the compression. Low compression can also prevent the chainsaw from starting. If the compression is low, the engine will need to be rebuilt or replaced.

Suddenly losing power

• Check the fuel. If the fuel in the chainsaw is old or stale, it can cause the engine to lose power. Drain the fuel tank and replace it with fresh fuel.
• Check the air filter. A dirty air filter can restrict airflow to the engine, which can cause the engine to lose power. Clean or replace the air filter as needed.
• Check the spark plug. A dirty or fouled spark plug can prevent the engine from firing, which can cause the engine to lose power. Clean or replace the spark plug as needed.
• Check the carburetor. The carburetor may be dirty or out of adjustment, which can cause the engine to lose power. Clean or adjust the carburetor as needed.

Oil tank leaking

• Check the oil level. If the oil level in the tank is low, it can cause the tank to leak. Fill the tank with oil to the correct level.
• Check the oil lines. The oil lines may be damaged or leaking, which can cause the tank to leak. Inspect the oil lines for damage and replace any that are leaking.
• Check the oil pump. The oil pump may be faulty, which can cause the tank to leak. Replace the oil pump as needed.

Dirty air filter injuries

• Wear protective gear. Always wear protective gear when using a chainsaw, including eye protection, hearing protection, and gloves.
• Clean the air filter regularly. A dirty air filter can restrict airflow to the engine, which can cause the engine to overheat and can also cause injuries to the user. Clean the air filter regularly according to the manufacturer's instructions.

I hope this helps!

Stihl MS 391 Manual

Stihl MS 391 Chain Saw Manual

Safety Information

• Read the instruction manual carefully before using the chain saw.
• Always wear eye protection, hearing protection, and sturdy footwear when using the chain saw.
• Keep the chain saw sharp and properly tensioned.
• Never use the chain saw if it is damaged.
• Be aware of your surroundings and avoid cutting anything that could cause the chain saw to kick back.
• Never use the chain saw if you are tired, under the influence of drugs or alcohol, or if you are not feeling well.

Before Use

• Check the chain saw for damage before each use.
• Make sure the chain saw is properly fueled and lubricated.
• Adjust the chain tension so that the chain is snug but not too tight.
• Test the chain brake to make sure it is working properly.

Troubleshooting

• If the chain saw is not starting, check the fuel and spark plug.
• If the chain saw is running but the chain is not moving, check the chain tension and the chain brake.
• If the chain saw is smoking, stop using it immediately and contact a qualified service technician.

Maintenance

• Clean the chain saw after each use.
• Sharpen the chain regularly.
• Replace the chain if it is damaged.
• Inspect the air filter and replace it if it is dirty.
• Inspect the spark plug and replace it if it is fouled.

Warranty

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

Contact Information

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

• Stihl Inc.
• 1800 Century Ave. N.
• St. Paul, MN 55113
• Phone: 1-800-4-STIHL (1-800-478-4455)
• Website: www.stihl.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 have any questions about the chain saw, please contact a qualified service technician.

Thank you for choosing a Stihl chain saw.