Whooooeeeeee that saw has been hot. Def sounds lean in your vid and the plug confirms it with all the fluffy deposits on the plug. I'm betting it was run hard on oil not designed for air-cooled two strokes (ie. outboard/marine oil). If it was mine, I'd give it a meteor piston kit and a bath.
A bath is certainly in its future. I'm going to start with a good tune up-plug, air and fuel filter and some fresh gas. I'm still on the gas he had in it. After that I'll run it a time or two and see if I notice anything. I'm starting to think the rings are probably about shot too. But I'll put some Teflon tape on my compression fitting and test it again.
Check to make sure the o-ring on the fitting isn't blowing out to the side. I degrease mine occasionally w/electrical contact cleaner and have to make sure it's tight for saws that will blow over 160psi.
How many times did you pull it over? Did you keep pulling it over until the gage stopped?? Is the decomp stuck down? Can you pry it back out?
Yes I pulled till the gauge quit. I can't tell what the decomp is doing. I didn't want to pry on it if it was out. I'm reeeeeally wanting to get that plastic off so I can investigate further.
I ran a 660 with 32 inch bar and 8 pin this weekend. I've run that saw with 20 inch oregon chain 7 pin setup. I noticed no weakness. It reminds me of a big v8. Not super high revving but torquey.
You guys are making me cry!!I just bought, as in 2 or 3 weeks age, a new 660 Mag. The weather turned awful and I've, as yet, not even pulled the cord on. You're making me think I through my dough out the window!
I wouldn't say you wasted your $$ if you have big wood to cut with it. It's a big saw on a HD chassis designed for production cutting of big timber. They are known for being a very durable saw as well. But it's not going to cut wood under 20" any faster than today's 70cc saws will. At least, not out of the box.
I am not sure why everyone says the 660 is so gutless ,they are not made for a 20 inch bar for one ,put a real bar on them and let them do what they were made for ,mine is more powerful than any of my 75cc saws ,just a different kind of power
View attachment 37286 About this time last year a tree service dumped 4 truck loads of red oak that was up to 54" in diameter and some silver maple just as big and I was wishing I had that 660 then. Was a lot of work for the 441 and a 25 " bar! I've got several white ash well in excess of 20" that the little green monsters have murdered, well not quite dead, that they need to come down. Then there is the horse farm next doo that has the same problem with their ash trees so I'll be going after them as well. That's in the short term; long term who knows, I may just sell it if I can't find enough work for it.
Agreed.My 3 biggest saws may set idle for 1 to 3 months at a time,but when I really need them nothing else in my arsenal will do the job.Much easier on the saw (plus the operator) to have the extra oomph when needed.I don't recall anyone ever saying "You know....I wish I hadn't went with that bigger saw " A saw will seem heavier the longer you're holding/using it.Larger more powerful saws weigh more of course,but get the job done much quicker the stress/strain on your body is less over all.
