It's won many trophies in its day. I got the saw a few years back from an older gentleman who used to race it.I can not remember what all has been done, but it screams! I usually only use it once or twice a year now to show it off, or if I just need to put a big smile on my face. It's super fun to use, and loud (like a 2 stroke dirt bike) I have never worked it super hard.
There should be some good youtube videos out there of this saw, I will look for some and post them. Saw has really good compression and starts up good, idles good and runs really good here at 5900 feet of elevation. Oils as it should, brake is good and functions good. Only issue I have noticed is that if I fill the gas tank 100% full it seems to leak a little. Like there will be a spot on the ground the next morning, it seems to be leaking a little from the cap.It might not be sealing all the way. Other than that there are no issues. What you see is what you will receive. I wish I could ask the old guy who built the saw, what all work had been done but he is no longer with us. As you can tell it has an aftermarket racing pipe, and the K&N style air filter set up. Feel free to ask questions I will try and answer the best I can. I can also send more pictures if you would like.
Sorry the saw is a little dirty in the pictures. I need to clean it. Only thing I have done is added an aftermarket west coast style chain guard as you can see with the larger felling dawgs.I will also send the original Stihl chain guard as you see in the pictures. For competition or performance purpose's only. Recommend high octane fuel (92 or higher). Bar and chain are not included. Yes there are a few scratches and dings, this is an older model of saw. The item "Stihl 066 MS660 Magnum powerful Racing chain saw HOT SAW Timber Sports Chainsaw" is in sale since Friday, January 18, 2019. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Outdoor Power Equipment\Chainsaws". The seller is "powersportsparts15" and is located in Holden, Utah. This item can be shipped to United States, Bahamas.