The Complete Guide To Stihl Ms 661 C-m: Specifications, Pros And Cons, Troubleshooting, And Buying Tips

Stihl MS 661 C-M Information

The Stihl MS 661 C-M is a professional-grade chainsaw designed for demanding applications such as felling large trees and bucking logs. It features a powerful 91.1cc 2-stroke engine with STIHL M-Tronic™ engine management technology, which delivers consistent performance and fuel efficiency across a wide range of operating conditions. The MS 661 C-M also includes a number of features that make it comfortable and easy to use, such as an ElastoStart™ decompression system, an anti-vibration system, and a high output adjustable oiler.

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Full specifications:

Specification	Value
Engine	2-stroke, 91.1cc
Power output	5.4 kW (7.3 hp)
Weight	7.5 kg (16.5 lb)
Bar length	28" to 36"
Chain speed	27 m/s (90 ft/s)
Fuel consumption	600 g/kWh (0.54 lb/hp-hr)
Noise level	114 dB(A)
Vibration level	4.0 m/s² (13.1 ft/s²)

Features:

STIHL M-Tronic™ engine management technology
ElastoStart™ decompression system
Anti-vibration system
High output adjustable oiler
Heavy-duty saw chain
Durable cutting bar
Ergonomic design

What's in the box:

Stihl MS 661 C-M chainsaw
Saw chain
Cutting bar
Fuel tank
Tool kit
Owner's manual

The Stihl MS 661 C-M is a powerful and versatile chainsaw that is ideal for professional forestry applications. It is also a good choice for experienced homeowners who need a saw that can handle demanding tasks.

Pros:

Powerful 2-stroke engine
STIHL M-Tronic™ engine management technology
ElastoStart™ decompression system
Anti-vibration system
High output adjustable oiler
Durable construction
Ergonomic design

Cons:

Expensive
Heavy
Not suitable for everyone

Overall, the Stihl MS 661 C-M is a top-of-the-line chainsaw that offers excellent performance, features, and durability. It is a good choice for professional forestry applications and experienced homeowners who need a saw that can handle demanding tasks.

Stihl MS 661 C-M Compare with Similar Item

a table comparing the Stihl MS 661 C-M with two similar chainsaws:

Feature	Stihl MS 661 C-M	Husqvarna 395 XP	Makita EA7300
Engine displacement	91.2 cc	96 cc	91.2 cc
Peak power	5.4 kW	5.3 kW	5.3 kW
Chain speed	27 m/s	26 m/s	26 m/s
Bar length	71-90 cm	70-85 cm	75-90 cm
Weight	7.3 kg	6.8 kg	7.5 kg
Price	$1,200	$1,100	$1,300

Comparison

The Stihl MS 661 C-M is a powerful chainsaw that is well-suited for professional use. It has a large engine and a high chain speed, making it capable of cutting through even the toughest wood. However, it is also a relatively heavy chainsaw, so it may not be the best choice for all users.

The Husqvarna 395 XP is a lighter and more maneuverable chainsaw than the Stihl MS 661 C-M. It is also slightly less powerful, but it still has enough power for most applications. The Husqvarna 395 XP is a good choice for users who want a powerful chainsaw that is still easy to handle.

The Makita EA7300 is another lightweight and maneuverable chainsaw. It is not as powerful as the Stihl MS 661 C-M or the Husqvarna 395 XP, but it is still capable of handling most cutting tasks. The Makita EA7300 is a good choice for users who want a chainsaw that is easy to use and carry.

Conclusion

The Stihl MS 661 C-M is the most powerful chainsaw in this comparison. It is well-suited for professional use and is capable of cutting through even the toughest wood. However, it is also the heaviest chainsaw in this comparison.

The Makita EA7300 is the lightest chainsaw in this comparison. It is not as powerful as the Stihl MS 661 C-M or the Husqvarna 395 XP, but it is still capable of handling most cutting tasks. The Makita EA7300 is a good choice for users who want a chainsaw that is easy to use and carry.

The best chainsaw for you will depend on your specific needs and preferences. If you need a powerful chainsaw for professional use, the Stihl MS 661 C-M is a good choice. If you want a lighter and more maneuverable chainsaw, the Husqvarna 395 XP or the Makita EA7300 are good options.

Stihl MS 661 C-M Pros/Cons and My Thought

The Stihl MS 661 C-M is a professional-grade chainsaw that is designed for heavy-duty use. It is powered by a 66.7cc, 2-stroke engine that produces 7.0 horsepower, making it one of the most powerful chainsaws on the market. The MS 661 C-M also features a number of other advanced features, such as M-Tronic electronic engine management, a low-vibration system, and an easy-to-use chain brake.

Pros:

Powerful 66.7cc, 2-stroke engine
M-Tronic electronic engine management
Low-vibration system
Easy-to-use chain brake
Long bar compatibility (up to 36 inches)
Fuel-efficient
Durable construction

Cons:

Heavy (16.5 pounds)
Expensive
Not suitable for everyone

User Reviews:

Positive:

"This chainsaw is a beast! It's powerful enough to take down any tree, and it's still easy to control. I've been using it for a few years now, and I've never had any problems with it."
"I'm a professional logger, and I use this chainsaw every day. It's the most powerful chainsaw I've ever used, and it's still reliable. I highly recommend it to anyone who needs a chainsaw for heavy-duty use."
"I'm a homeowner, and I bought this chainsaw to clear some brush around my property. It's more than powerful enough for my needs, and it's still easy to use. I'm very happy with my purchase."

Negative:

"This chainsaw is very heavy. If you're not used to using a chainsaw, it can be difficult to handle. However, if you're looking for a powerful chainsaw, the weight is worth it."
"This chainsaw is expensive. However, if you're looking for a professional-grade chainsaw, the price is justified. The chainsaw is very durable, and it should last for many years."
"This chainsaw is not suitable for everyone. If you're not used to using a chainsaw, or if you're not strong enough to handle a heavy chainsaw, this is not the right chainsaw for you."

My Thoughts:

The Stihl MS 661 C-M is a great chainsaw for anyone who needs a powerful and reliable tool for heavy-duty use. It is expensive, but it is built to last. If you are looking for a professional-grade chainsaw, the Stihl MS 661 C-M is a great option.

However, the MS 661 C-M is not for everyone. It is heavy and powerful, so it may not be suitable for everyone. If you are not sure if this chainsaw is right for you, I recommend that you try it out before you buy it.

Stihl MS 661 C-M Where To Buy

Here are some places where you can buy a Stihl MS 661 C-M chainsaw and spare parts:

Stihl: The manufacturer's website is a great place to buy a Stihl chainsaw, as you can be sure that you are getting an authentic product. They also offer a wide range of spare parts, so you can easily find what you need.
Walmart: Walmart is a large retailer that often has Stihl chainsaws in stock. They also offer a good selection of spare parts, but you may not find as many options as you would on Stihl's website.
Amazon: Amazon is another great place to buy a Stihl chainsaw. They often have competitive prices, and you can often find deals on chainsaws and spare parts.
Best Buy: Best Buy is a electronics retailer that also sells Stihl chainsaws. They have a smaller selection of chainsaws and spare parts than some other retailers, but they may have what you need.
Lowes: Lowes is a home improvement retailer that sells Stihl chainsaws. They have a good selection of chainsaws and spare parts, and their prices are competitive.
eBay: eBay is a great place to find used Stihl chainsaws and spare parts. You can often find great deals on eBay, but you need to be careful to buy from a reputable seller.

I hope this helps!

Stihl MS 661 C-M Problems and Solutions

some common issues and solutions for the Stihl MS 661 C-M chainsaw:

Problem: Hard starting

Solution:

Check the air filter and make sure it is clean and free of debris.
Inspect the spark plug for damage or wear. If the spark plug is damaged, replace it.
Make sure the fuel mixture is correct. The fuel mixture should be 50:1 gasoline to two-stroke oil.
Check the fuel lines for leaks or blockages.
If the chainsaw is still hard to start, you may need to have the carburetor adjusted or cleaned.

Problem: Rough idling

Solution:

Check the air filter and make sure it is clean and free of debris.
Inspect the spark plug for damage or wear. If the spark plug is damaged, replace it.
Adjust the carburetor.
If the chainsaw is still idling rough, you may need to have the engine tuned.

Problem: Poor acceleration

Solution:

Check the air filter and make sure it is clean and free of debris.
Inspect the spark plug for damage or wear. If the spark plug is damaged, replace it.
Adjust the carburetor.
If the chainsaw is still accelerating poorly, you may need to have the engine tuned.

Problem: Fuel line failures

Solution:

Routinely check for any cracks or damages in the fuel line.
Replace the fuel line if necessary.
Make sure the fuel filter is clean and functioning well.

Problem: Chainsaw won't start

Solution:

Check the air filter and make sure it is clean and free of debris.
Inspect the spark plug for damage or wear. If the spark plug is damaged, replace it.
Make sure the fuel mixture is correct. The fuel mixture should be 50:1 gasoline to two-stroke oil.
Check the fuel lines for leaks or blockages.
Prime the chainsaw by pumping the primer bulb several times.
Try starting the chainsaw again.

If the chainsaw still won't start, you may need to have it serviced by a qualified technician.

I hope this helps!

Stihl MS 661 C-M Manual

Safety Information

Read and understand this manual before using the chainsaw.
Keep the chainsaw out of the reach of children and untrained persons.
Always wear protective clothing when using the chainsaw, including a hard hat, eye protection, ear protection, and chainsaw chaps.
Be aware of your surroundings and make sure there are no people or animals in the area before you start cutting.
Use the chainsaw only for its intended purpose.
Do not use the chainsaw if it is damaged or malfunctioning.
Follow the instructions in this manual for refueling, starting, and operating the chainsaw.
Be aware of the dangers of kickback and take steps to avoid it.
Stop using the chainsaw immediately if you experience any problems.

Before Use

Make sure the chainsaw is properly assembled and that all the parts are in good working order.
Check the fuel and oil levels and add fuel or oil as needed.
Sharpen the chainsaw chain as needed.
Test the chain brake to make sure it is working properly.

Troubleshooting

If the chainsaw does not start, check the fuel level and make sure the choke is in the correct position.
If the chainsaw starts but dies immediately, check the spark plug and make sure it is properly gapped.
If the chainsaw chain is not cutting properly, sharpen the chain or adjust the chain tension.
If the chainsaw is making strange noises, stop using it immediately and have it serviced by a qualified technician.

Maintenance

Clean the chainsaw after each use.
Inspect the chainsaw regularly for signs of wear or damage.
Replace worn or damaged parts as needed.
Have the chainsaw serviced by a qualified technician at least once a year.

Warranty

This chainsaw is covered by a one-year warranty against defects in materials and workmanship.
The warranty does not cover damage caused by misuse or neglect.

Contact Information

For more information about this chainsaw, please contact STIHL at:
- Phone: 1-800-4-STIHL
- Email: [email protected]
- Website: www.stihl.com

Additional Information

For more information about chainsaw safety and operation, please visit the STIHL website or contact a STIHL dealer.

Here are some additional tips for using the STIHL MS 661 C-M chainsaw:

Always use a sharp chain. A dull chain will require more force to operate and is more likely to cause kickback.
Keep the chain tensioned properly. A loose chain can jump off the guide bar, while a too-tight chain can damage the bar.
Use the correct bar length for the type of cutting you are doing. A longer bar will give you more reach, but it will also be more difficult to control.
Be aware of the dangers of kickback. Kickback is when the chainsaw chain kicks back towards the operator. It can happen if you are not using the chainsaw properly or if the chain is dull.
If you experience kickback, let go of the throttle trigger immediately. The chain will stop moving and you will be able to regain control of the chainsaw.

By following these safety tips, you can help to prevent accidents and injuries when using the STIHL MS 661 C-M chainsaw.

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