MS 661 R C-M - $1,249.95 DSRP



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The MS 661 professional chainsaw with a wrap-around handle (R) for greater maneuverability.

For greater maneuverability when felling large trees, turn to the impressive performance of the MS 661 R C-M. Its wrap-around handle also provides greater operator comfort when cutting. Just like the MS 661 C-M, the saw includes STIHL M-Tronic™ engine monitoring technology and delivers less vibration and 20% greater fuel efficiency than the MS 660. Other features include long-life filter system us...Read More
Print Spec Sheets
MS 661 R C-M Specifications
DISPLACEMENT 91.1 cc (5.56 cu. in.)
ENGINE POWER 5.4 kW (7.2 bhp)
POWERHEAD WEIGHT 7.66 kg (16.8 lbs.)
FUEL CAPACITY 825 cc (27.9 oz.)
CHAIN OIL CAPACITY 360 cc (12.1 oz.)
OILOMATIC® CHAIN 33 RS3
GUIDE BAR LENGTHS* (Recommended ranges) 40 to 80 cm (16" to 32")
POWER SOURCE Gas
STIHL recommends #3624 (33 RS3 84) OILOMATIC® saw chain and 25" 3003 000 4030 STIHL ROLLOMATIC® ES guide bar combination. The actual listed guide bar length can vary from the effective cutting length depending upon which powerhead it is installed.
Model Features
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    Reduced-Emission Engine Technology - Caring for Nature
    The STIHL Inc. “Caring for Nature” seal identifies its powered products that are more environmentally conscious, producing zero or low exhaust emissions. STIHL Inc. defines “low exhaust emissions” as being cleaner than EPA and/or CARB exhaust emission standards.

    More Information

  • Zoom
    Wrap Handle (R)
    Saw can be used in multiple positions for felling or limbing with hands in the proper positions.
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    STIHL M-Tronic™ 
    This product features M-Tronic™ (M) - a new generation of Intelligent Engine Management that eliminates the low and high speed carburetor adjustment screws, compensates for dirty air filter and changes in elevation and fuel quality for optimum engine power at all times.

    See it in action!

    More Information

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    STIHL ElastoStart™
    The ElastoStart™ starter handle is an exclusive feature of STIHL. It is a starting grip with a built-in shock absorber that helps reduce the effort when pulling on the starter cord. The ElastoStart™ starter grip noticeably reduces the sudden peak forces (compression) normally felt during cranking. The forces which occur at the grip after the first compression stroke are smoothed out.
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    Decompression Valve
    The decompression valve, also referred to as 'deco' or 'deco valve', vents compression in the cylinder for easier starting. The decompression valve temporarily reduces the compression in the combustion chamber during cranking and helps reduce the effort needed to pull the starter rope. It is opened manually and closes automatically as soon as the engine fires.
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    Adjustable Automatic Oiler
    The Adjustable Automatic Oiler allows the user to adjust the lubricant of the guide bar and saw chain for different bar lengths and cutting conditions.
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    Toolless fuel and oil caps with retainers
    Simply lift the lever and twist the caps to remove or tighten. There‘s no need to use a tool to tighten or loosen.
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    Side-Access Chain Tensioner
    The side-access chain tensioner makes it much more convenient for the user to adjust the saw chain with a bar wrench as opposed to the typical location of the guide bar adjustment screw.
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    Anti-Vibration System
    STIHL has developed a system for minimizing the vibration levels of handheld outdoor power equipment. The STIHL anti-vibration system helps reduce operator fatigue and provides a more comfortable working experience.
Standard Features
  • Zoom
    Common Features for Chainsaws
    View the features common to many STIHL chainsaws.

Important Information
WARNING! The occurrence called “kickback” can cause serious or fatal injury. Always read the instruction manual carefully before using your saw. STIHL uses a green and yellow color-coding system to help you select a powerhead, bar and chain combination that complies with the kickback requirements of ANSI Standard B175.1 (gasoline-powered saws) and §30 of UL 1662/ ANSI Standard B175.1 (electric chainsaws). Ask your STIHL dealer about safe operating procedures and the advantages of the STIHL Quickstop® chain brake, STIHL Quickstop® Plus (Q) additional chain braking feature, STIHL reduced kickback bars and STIHL low-kickback saw chains.

STIHL recommends the use of green reduced kickback bars and green low kickback chains on all STIHL chainsaws.
* The actual listed guide bar length can vary from the effective cutting length based on which powerhead it is installed on.
Note: STIHL recommends use of fuel with no more than 10% Ethanol content. Using fuel with greater than 10% Ethanol content may cause damage to your equipment and may void your STIHL warranty. Learn More…
WARNING! Improper use of any power tool may cause serious or fatal injury. Read, understand and follow carefully the operating and safety instructions in your instruction manual before using such products.

STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only.
Click to view the STIHL Limited Warranty Time Periods
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    Bar and Chain Oil
    STIHL Bar and Chain oil is formulated to adhere to the bar and chain, and to reduce wear. Special agents in the oil formulation help keep sap and pitch from clinging to the bar and chain.

    Available in quart and gallon bottles, 5 gallon pails and 55 gallon drums, in both summer and winter weights.

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    Chain Pitch File Diameter File Guide
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    Sharpening Kit
    Part Number
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    3/8 PMN 9.32 5/32 4.0 0811 411 8073

    5605 750 4327

    5605 007 1026

    1/4
    3/8 PM
    6.35
    9.32
    5/32 4.0 0811 411 8091

    5605 750 4327

    5605 007 1027

    0.325 8.25 3/16 4.8 0811 412 8088

    5605 750 4328

    5605 007 1028

    3/8 9.32 13/64 5.2 0814 243 3384 5605 750 4329

    5605 007 1029

    0.404 10.26 7/32 5.5 0811 412 8108 5605 750 4330

    5605 007 1030

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MS 661 R C-M is rated 4.3 out of 5 by 21.
Rated 5 out of 5 by from Excellence personified I stepped up to the MS 661 RCM with a 36" bar from a Husky 455 Rancher and won't go back; I'm a Stihl convert! Tremendous power, runs like a champ, I love the wrap handle. You get what you pay for and it's worth every penny, what a saw!
Date published: 2016-06-28
Rated 5 out of 5 by from Saw is a BEAST! This saw was a power house right out of the box. The only modifications I have made to mine were replacing the exhaust with a dual port and removing the spark arrester. This saw, with a good sharp chain, will make VERY quick work of ANY size tree! I have have this saw, an older 066 Magnum, 056 Magnum 2, 056 Super and even an 045 Super. All of these saws, even after DECADES of HEAVY use, still run great! Some have need repairs over the years from massive amounts of wear, but these saws are tanks. Built for professionals. They are all I will ever buy, hands down.
Date published: 2016-04-26
Rated 5 out of 5 by from Awesome Saw Better With Wrap Bar I still use my 660 but not as much as the 661. It has a stong powerband in the wood. The M-Tronic and great antivibe are big improvements over the legendary 660. The wrap handlebar makes it more versatile felling. Big, smooth power.
Date published: 2016-04-05
Rated 5 out of 5 by from mini mill monster This saw is great for a lot of applications. I have been milling with it and I am very happy with its power. It glides through soft and hard wood and bucks logs like a light sabre. Happy to have it with my smaller stihl saws.
Date published: 2016-03-14
Rated 5 out of 5 by from Gotta love the power This is the saw for a professional that wants a versatile saw runs 25" to 40" bars and chains like a dream. I would recommend full skip chisel chains on the longer bars. Been a little over a year now and haven't had any issues. I would get another one when this one wears out.
Date published: 2016-03-10
Rated 5 out of 5 by from a beast on large trees this saw makes short work on large trees.had a lot of large ash trees witch had to come down thanks to asian ash borer beetle.this saw made the job easy when your felling 120' ash trees with a 3'-4' dia.. trunks.thank you stihl!
Date published: 2016-01-03
Rated 5 out of 5 by from Best Saw Around If your looking for faster way to get wood then this saw is perfect. Never had any issues when using this saw with performance. Be ready to make everyone jealous of the wood this saw makes. Best bang for your buck! Hands down. Thank You STIHL
Date published: 2015-09-10
Rated 2 out of 5 by from Bought saw 2 months ago blew up out of nowhere If you are a Professional cutter I would not recommend buying this saw ran fine for around two months, not even running it every day, then blew up one day took really good care of the saw just won't hold to to production falling like the old 660's did.
Date published: 2015-07-25
Rated 5 out of 5 by from stihl nailed it! Stihl nailed it! I was never really sold on stihl prior to buying this saw. It always starts in any condition, there's no hesitation and stump pulling power! All the little changes are a plus.
Date published: 2015-05-03
Rated 5 out of 5 by from Everything I was hoping for and more. Didn't know what to expect but when I took it to the cut block and put it into a oversize cedar and pinned it I was impressed. Lots of stump power, little to no vibration, and at the end of the day the weight difference makes for a more productive day. Stihl is on to something with this saw.
Date published: 2015-04-22
Rated 5 out of 5 by from Out cuts My MS660 I own 4 Stihl pro saws, MS362 Arctic, MS461R full wrap MS660R full wrap and now this MS661R full wrap. I cut dead seasoned locust almost exclusively and the saws all eat it up very fast. My 660 has a dual port muffler and is tuned to run but it seems this saw may have it beat, I was skeptical about the M Tronic as this is my first saw with it. Judging by the performance and easy starting I will own more. My MS362 was the last non M tronic saw they had and now I wished I'd have waited and bought one with it. Time will tell over the long term but I am very happy with the saw so far and it only has one tank thru it, its definitely going to gain power as it breaks in.
Date published: 2015-02-15
Rated 5 out of 5 by from A great replacement for the MS660 This saw lives up to everything I expected it to be and more. Being next to the biggest saw Stihl makes,it's heavy and powerful. I've owned 2 MS660's and ran them extensively. The new MS661 has them beat. Uses less gas, has less vibration, starts easier, power delivery is more consistent, an overall pleasure to run. As long as it continues to perform this good I have no regrets about my purchase. Also, a shout out to my Stihl dealer. Brown's Supply in Acme Pa. Great guys to do business with.
Date published: 2014-12-23
Rated 5 out of 5 by from Kind of awesome In wood under 25" a unicorn would probably be faster.
Date published: 2014-12-09
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