Two-Smoke
ArboristSite Lurker
Recently inherited an 08 Husqvarna 455 from my father in law. He had been fairly rough on it cutting allot of firewood and neglecting maintenance in several areas. The saw had sat with gas in it for the last 3 years or so. When I got the saw it started up but after 5 minutes of running it the motor started to run erratically. From there I decided to clean it up and get it back to “reliable condition”. First I took the air compressor to it and blew out the years of sawdust caked in every imaginable location, replaced spark plug, replaced fuel filter, replaced air filter, rebuilt carburetor (diaphragms, gaskets, cleaned screen, cleaned ports), replaced primer bulb, replaced fuel line from carb to bulb, replaced fuel line from bulb back to tank, replaced tank vent. Started the saw, got carb tuned using inductive tacometer, and test ran saw. It runs great until the motor gets good and hot causing the fuel tank to pressurize resulting in the saw stalling while idling. I thought replacing the tank vent would cure this issue but it has not. The only thing on my radar which I have not replaced is the fuel line going from the fuel filter up into the bottom of the carb. I just took it off a few hours ago and inspected it finding no holes, tears, or leaks. Any help would be much appreciated. Thanks in advance.