But on the MS 280i there was also a solenoid valve in the carburetor HD-39. STIHL MS 661 C-M is an intelligent professional gasoline chainsaw, cause the producer provided this particular model with a great number of different modern technologies. IIRC, some of the early 661s had problems with the intake boot clogging up, the boot was subsequently revised. The reason it’s so tricky is because I don’t have any need for another saw, yes I blame this forum!!. Page 1 of 2 1 2 Next > the GOAT Banned. That could be the problem, but as others have said, I would pull the muffler after I check for compression just pulling the cord. The 661 is smoother, uses less fuel, and as the bar gets longer, it dont really notice. If your 066 is not ported, you'll love the 661, it takes a ported 066 to beat a stock 661 If I had to choose, I'd keep both and use them as a 2 saw plan If you want your 066 to run at its potential, mdavlee or jmssaws build some mean 90cc monsters Discussion in 'Chainsaws and Power Equipment' started by the GOAT, Dec 12, 2013. New spring system, new oil pump, new engine porting, new air filter system, M-tronic/Autotune, other lesser features (why they are so proud of a double dawg setup seems trivial compared to all the other real features): Brought it home didn't think nothing about it. 660 will certainly be a bit simpler to work on, and aftermarket parts are indeed plentiful. Also, if your 2012 date is correct, the 661 press release for canada wasn't until september 2014. Don't miss out. Stihl didn't honour my warranty! They gave me a new power head and chip. I love it. The saw works fine now, but it is rather disturbing that the reports keep coming in. Ran a tank through it. Stihl 661 recall. That's the good news. The STIHL MS 661 R C-M chainsaw is a professional chainsaw with a wrap-around handle that allows for greater maneuverability. Was making dinner and my 4y/o son comes in and says "look at your new saw daddy". Joined: Oct 4, 2013 Messages: ... Then again, being in the coatings biz, I know first hand that quality issues may not show up until long after the part is installed. Well got my 661 today. Is this kind of negligence towards customers and warranties even close to being legal?! Benjo , … One of them is called STIHL-2-MIX-Engine, that helps to lessen the usage of fuel up to 20%. Always check simple stuff fist, new plug, fuel filter, air filter and check the decomp valve. This little o-ring isn`t availible from Stihl as a spare part on the m-tronic models. I've been after then now for over a year to replace the saw. I have gone back and forth on getting either the 462, 500i or 661 for about 6 months + ( this isn’t a rushed off the cuff purchase). In the IPL of the MS 280i this o-ring sealing the solenoid valve is availible as a spare part (9645 945 3001 O-ring 7x0.8). My 5y/o daughter put her stickers all over it. My first 661 power head melted because of a falty mtronic chip. Stronger than my built 660 and 066. Here's the letter I eventually wrote Stihl Head Offices about my 661, and posted on the chainsawyer.com website. You would think that Stihl would correct it right away and issue a recall. Here is the official brochure on the 661 from Stihl. This fact is highly appreciated by loggers, who use instruments every single day. Sign up for our newsletter to hear about offers, tips and upcoming events.