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MS 661 C-M

A professional chainsaw with enhanced fuel efficiency and STIHL M-Tronic™ technology.

MS 661 C-M
MS 661 C-M is rated 4.5 out of 5 by 44.
Rated 3 out of 5 by from chain blade nuts spin off while in use no matter how tightly torqued First of all , I run a tree service and got this saw to cut tree stumps. Plenty of power but blade nuts spin off after about one minute of use. No matter how tight, there's been times I thought I was going to break the stud off. I had to buy nylon self locking nuts to use it. Good luck!
Date published: 2017-09-08
Rated 5 out of 5 by from Nice hefty saw Shy of an 880 for milling or clearing the rainforests - I can't imagine anyone needing a bigger saw. The 661 is a beast. It don't find huge power advantage over the 461, but it's noticeable. Love the MTRONIC. This saw doesn't let down.
Date published: 2017-08-21
Rated 5 out of 5 by from Powerful saw I see a lot of people having a problem with the saw starting after running hot or after running for long periods of time. I found when you re-start any of the saws just pull the cord with out choking or doing anything you would do when cold starting and especially with the mtronics. Usually starts every time one pull because the gas is already there.if you re-choke after running hot, it floods the carburetor causing the no starts.Just pull the cord. Unleash the beast.
Date published: 2017-08-04
Rated 5 out of 5 by from I'm a 3rd generation timberman. Being a Missouri family with German heritage, we have always known what the best saw out there is... Stihl! This saw has made so many advancements, I am very impressed. Have solely operated it for one year now without a hitch, has never shut off when laid down during idle. If you can handle the few extra pounds, the gas tank is larger for fewer fill ups throughout the day, new anti-vibration mounts and springs have really improved kickback vatigue, as well as new air filters. Also, the chain cap cover has nuts that stay in once loosened. Overall, I have not found anything I don't like about the brilliantly engineered advancements that have been developed. Dependability at its finest but hold on, this chainsaw aien't for boys! Way to go Stihl, cheers to taking such pride in the development of this awesome chainsaw.
Date published: 2017-07-28
Rated 5 out of 5 by from Tree eating beast I have a small hard wood timber farm of a few hundred acres and needed to fell and buck some very large red oak, ash and maple. So far I'm into about 70 hours on the saw and it starts on the second pull almost every time. Today when it was 88 degrees out and I stopped for a 20 minute break it didn't act like it wanted to start. I turned ignition to off cranked it three times and then did a normal start and it took right off. Saw has a great power to weight ratio and it's easy to clean and maintain after use. I Stihl (pun intended) use an 044 for light use and a new 193T for in tree work. The 044 has got to be 16 or so years old and still cuts like there's no tomorrow. I clean and tune my own equipment and keep them lubed and clean, they seem to last which brings down the investment when you consider the equipment should last you for many years if properly maintained.
Date published: 2017-07-08
Rated 5 out of 5 by from Beast of a saw Originally bought this saw for milling,but decided to use it for my felling needs and I've never looked back Im pretty sure I'll never come across anything this saw can't handle.ive ran 066 and 660s and this saw is way above them as far as power and torque and the m tronic take the guess work out of tuning and adjusting for conditions.its been very reliable so far usally two pills and it fires right up.Thos is most definitely a pro grade saw,I had to order mine cause trees companies in my area bought my dealer out.truly the best saw out of the 4 Stihl saws I own and it definitely kept the Stihl reputation up as being the best .thanks Stihl!!!
Date published: 2017-05-23
Rated 5 out of 5 by from Alaskan mill powerhouse I bought this saw to run a 36" Granberg mill through hardwoods. I put a 42" bar with ripping chain on and the mill gives a touch over 33" of cutting width with that set up. The widest I've had a chance to cut has been about 28" over short runs, with sustained cuts out to about 20". With a sharp chain the saw walks through all that without a second thought. I'll be taking down a big maple soon and working the mill at max width all day on it, I'll update my review once I do. My only complaint with this saw is it can be a little finicky to start when it's hot, but we just find clean up tasks to kill 30 minutes and it fires up first or second pull once things have cooled down. That or just hold the throttle wide open rather than using the automatic Start setting. The details on this saw are great too - love the fuel caps, love the easy adjust chain tension, love the embedded bolts on the chain retainer plate so we aren't chasing nuts around a dirty job site. This is my first Stihl and I'm a convert now. This is a big, expensive saw and it's a lot to throw around, but if you need the power it's your only option & it delivers.
Date published: 2017-05-15
Rated 5 out of 5 by from Great Saw I am 16 years old and make money on the side by cutting low risk trees and milling them with an Alaskan Mill into lumber to sell. I am by no means an expert but have a decent idea what I am doing. I love my 661! I purchased it right after Christmas in 2015. The 661 typically runs either a 25" or 36" bar with 33rs3 chain and is unstoppable even in the most gnarly wood. The balance of the saw is great but I find it to be perfectly balanced with a 25" bar. The 36" gets a little nose heavy but keeps the saw very nimble and maneuverable. A little expensive for me, but it continually proves it is worth every penny. On a side note I was cutting some trees for a farmer and got hung up in a gum tree by a gust of wind. As I walked back to the truck to get a wedge and saw tool the wind stopped, my saw fell out of the kerf, and got smashed by a 22" gum tree. This saw is so well engineered that similar to the front of a car folding like an accordion in an accident, the top handle on the saw folded like an accordion and absorbed the force of the tree. A few weeks later the saw was back up and cutting wood again.
Date published: 2017-05-12
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