outdoorfan
ArboristSite Operative
Hi fellas,
I could use some advice if any of you have experienced this. I'm about to tear into it, but I'm looking for some pointers, if possible. My 440 has been gradually running worse and worse throughout this past fall, as the weather has been turning colder.
What happens is that is cuts out under high revs. It'll die if I don't immediately let off the throttle. There were times that it would run better once I had been running it for awhile, but then I noticed that after refilling the gas tank, it would act up again, even if the saw was warm from use. It would also take a long time to start it from a cold start, like it wasn't getting enough gas.
Last night I put it in my heated shed in preparation to work on it. Just for kicks and giggles, I fired it up this morning to see if being in the shed overnight made a difference. It started up and ran flawlessly for 1 minute or so, when I shut it off. So then I left it out in the cold for a few hours. Sure enough, it started cutting out within 10-20 seconds of revving it up. I put it back into the shed to warm up for a few hours again. Started it up, and it runs fine.
I have neglected maintenance on this saw. The fuel tank breather, if it has one, has never been replaced by me. I don't know if that is a possible culprit. I've never gone through the carb or changed any gaskets. I can do all those things, but if someone can clue me into the likely culprit, I'll start there.
Thanks!
I could use some advice if any of you have experienced this. I'm about to tear into it, but I'm looking for some pointers, if possible. My 440 has been gradually running worse and worse throughout this past fall, as the weather has been turning colder.
What happens is that is cuts out under high revs. It'll die if I don't immediately let off the throttle. There were times that it would run better once I had been running it for awhile, but then I noticed that after refilling the gas tank, it would act up again, even if the saw was warm from use. It would also take a long time to start it from a cold start, like it wasn't getting enough gas.
Last night I put it in my heated shed in preparation to work on it. Just for kicks and giggles, I fired it up this morning to see if being in the shed overnight made a difference. It started up and ran flawlessly for 1 minute or so, when I shut it off. So then I left it out in the cold for a few hours. Sure enough, it started cutting out within 10-20 seconds of revving it up. I put it back into the shed to warm up for a few hours again. Started it up, and it runs fine.
I have neglected maintenance on this saw. The fuel tank breather, if it has one, has never been replaced by me. I don't know if that is a possible culprit. I've never gone through the carb or changed any gaskets. I can do all those things, but if someone can clue me into the likely culprit, I'll start there.
Thanks!