Greg Smith
ArboristSite Lurker
I inherited a barely used chainsaw that had been put up a while. Replaced all the fuel/oil lines and filter, put in fresh gas and seafoam and adjusted the carb and it runs like a scalded ape...for a short while (tank or two). After about a tank of gas, it would bog down and die. Decided to do a carb rebuild, and when I took it off, the carb was especially clean EXCEPT for for the screen inside the carb which was completely filled to the brim with fine almost white paste, which dries quickly when spooned on on a screwdriver...it is just fine dust. Took the carb apart completely and put it in an ultrasonic cleaner and came out spotless...put it back together with the original components, saving the rebuild kit for later. Anyhow, ran great again and put it up. Took it out a couple weeks later and started it up and it wasn't long before it was dying again. Fiddled with the carb screws a bit and then gave up and took the carb off and opened it up...again, completely clogged with the same white paste...blasted it out with carb cleaner and it's running great again. I checked the filter (which was new), and it is intact and passes fuel. I'm curious hw this paste is gatting past the filter and hanging up in the screen. Thanks in advance.