Hello,
First time posting here, but I have been reading the message boards on this topic for awhile.
I will try to keep this as short as possible.. Doing some post Sandy clean up with my MS290.. My 2 cycle mix can had straight gas in it from filling everything I had during the fuel shortage.. (here comes the "youuuu idiotttt" part) Ran straight gas through saw.. Saw stalled after about 30 seconds of cutting.. realized what i did, dumped fuel put proper mix in, put a little oil in the cylinder and restarted.. It ran fine but i did not try cutting with it. Fast foward to 2:30 am lying awake in bed thinking about it, I go back to the garage and remove the muffler. Piston is showing obovious signs of scoreing. I have not run a compression test on it yet (just ordered a gauge online, waiting for it to come) but im sure many of you can tell right off the bat how bad this looks. I am prepared for the worst and have been checking Balieys and found the fully assembled short block that would upgrade the saw to a 390. Being that I have never fully taken apart a saw before I did watch a few videos on youtube of a guy who completely breaks down a MS250 and re-assembles it. I have also obtained a copy of the service manual and have read every thread and posting regarding this saw i have worked on small engines before but for some reason am hesitant on this one.. Does anyone have advice on how I should proceed and if the short block is the way to go if im going to have to replace the p&c anyway? BTW.. went to my local Stihl dealer and they pretty much laughed to eachother tried to get me to give it to them to service and scoffed at the idea up upgrading to the 390.. From the postings I have read, I trust most of your opinions much more than theirs! Thanks for the help.
First time posting here, but I have been reading the message boards on this topic for awhile.
I will try to keep this as short as possible.. Doing some post Sandy clean up with my MS290.. My 2 cycle mix can had straight gas in it from filling everything I had during the fuel shortage.. (here comes the "youuuu idiotttt" part) Ran straight gas through saw.. Saw stalled after about 30 seconds of cutting.. realized what i did, dumped fuel put proper mix in, put a little oil in the cylinder and restarted.. It ran fine but i did not try cutting with it. Fast foward to 2:30 am lying awake in bed thinking about it, I go back to the garage and remove the muffler. Piston is showing obovious signs of scoreing. I have not run a compression test on it yet (just ordered a gauge online, waiting for it to come) but im sure many of you can tell right off the bat how bad this looks. I am prepared for the worst and have been checking Balieys and found the fully assembled short block that would upgrade the saw to a 390. Being that I have never fully taken apart a saw before I did watch a few videos on youtube of a guy who completely breaks down a MS250 and re-assembles it. I have also obtained a copy of the service manual and have read every thread and posting regarding this saw i have worked on small engines before but for some reason am hesitant on this one.. Does anyone have advice on how I should proceed and if the short block is the way to go if im going to have to replace the p&c anyway? BTW.. went to my local Stihl dealer and they pretty much laughed to eachother tried to get me to give it to them to service and scoffed at the idea up upgrading to the 390.. From the postings I have read, I trust most of your opinions much more than theirs! Thanks for the help.