If you can run your 290 w/20" b/c, so much the better. As long as you're keeping the rpm's in the normal power range and running quality mix oil, I wouldn't be concerned about stressing the saw. The local Stihl tech told me it's consistently over-revving a saw that will lead to bearing failure sooner than later. He also recommended a 20" b/c on a 440 for hardwood (full comp chain); 25" b/c for softwood. The Stihl website recommends a 25" b/c for the 441 & 461; knowing what I know about my 460, I'd go for the 461 if you're looking for a significant step up from your 290....Ya know I hear people say what you said about you running a 20" b&c on the 440, but I must say I can't count how many times I have had 20" bar buried on my 290, and though it doesnt pull with authority I have never had a real problem with.... I do understand it puts her under stress, that's why I was thinkin bout the 441....however I have never ran 441....
Ya rx, that's the other thing I have been thinkin about, wear and tear on my other saws mainly the 290.... I use the 250 for as much small stuff as I can because of weight of the saw is so light, but I just always seem to be giving the poor ol 290 more work that she really needs, she is old, a little rough looking, but always works and gets the job done without a problem....that's my main reason for wanting the bigger saw....and rx7 I have never ran a husky chainsaw in my life, but I am the type of person that will give anyone or any brand a try at least once....
And to be completely honest with everyone I have been trying to talk myself into getting a new, bigger saw for at good while now....
I run Stihl Ultra (gray bottles) at the recommended ratio w/93 octane E10 gas - no significant problems to date, although the two ms440's (bought used) can have an inconsistent idle, sometimes to a stall, and it often takes 9-10 pulls after a few cold days to get the saws to pop. Rebuilt carburetors helped somewhat, but new carbs would probably make the total fix.Thanks Philip yes I run the synthetic oil from stihl in the gray bottles.... I think it is supposed to be the best they sell, if you have any suggestions I am always listening.....I try not to stress 290 as I depend and use her a lot.... So Philip do you have a 440 and a 460 or both.... And how do you like them and how good do they act buried in hard wood with the 25" b&c....
441 air filtration is better, but the 461 system is nothing to sneeze at. 461 has manual carb adjustments; one less thing to go wrong.Ya no one has any 441 may look like a461 with have to do.... Guys is there any difference in the air filtration systems I can't seem to get a straight answer... And the dealer I called said they weigh the same but 461 has little more power...
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