Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. Why is a 455 Rancher chain saw flooding after it is run and then stopped? Thought it might be tank vent. Details: I bought a new 455 Rancher chainsaw in Sep 2011. I am working on a STIHL model 026 chainsaw the engine would not keep running so I bought a carb kit for it . I take the plug off dry the plug restart it and the - Answered by a verified Technician. I have a Stihl 026 chainsaw that is flooding every time I start it. I'll keep pulling the starter cord and sometimes it doesn't seem to start. This sticky fuel can clog up the carburetor and cause the chainsaw engine to … Keep track of the models you own in your profile. I was tired of problems with my Poulan Pro not starting. Activate the choke by moving the lever to the full choke position and pull the starter rope 3 or 4 times to start the engine. Cleaned it out good. After the rebuild, I completely drained my fuel tank of ETOH-fuel and replaced the fuel-H20 filter before testing and using the carb post rebuild. Let's look at the factors that cause flooding and the most effective ways of preventing and fixing it. The carburetor might be clogged. I have a Stihl chainsaw 028 that just fills up with fuel. That's there equivelant to the Stihl MS200. A clogged carburetor is often caused by leaving fuel in the chainsaw for a long period of time. Fuel lines are good. You will get much longer use out of your power tools if they are taken care of. 5. Took the saw out this past summer 2012 to use it again and it wouldn't start. Still does it just sitting there. Neglecting to look after a chainsaw can lead to malfunctions such as flooding. Here are some tips to keep your chainsaw well maintained: Cleaning and properly maintaining necessary areas can be an effective preventative measure to some of the common problems why a chainsaw won’t start. Any help would be appreciated. A chainsaw has two filters to regulate air circulation and one to keep debris out of the fuel, and all of them need regular servicing. More info. This is our usuall starting procedure. The saw was used for a max of 5 total hours. Under warm idle, I can see fuel dripping from the Venturi’s. I suspect the answer to this question is that I need to learn more about how a chainsaw engine works, but: I use a stihl ms260 at work, and I'll have it on full choke to start it cold. Take spark plug out and pull rope and fuel shoots out of exhaust and spark plug hole. Try to start the chainsaw after priming the carburetor. The problem is that it takes approximately 3 attempts to start and run it. It has a Walbero carb . Only using non ETOH fuel. Mid to top RPM it runs smooth. If I pull maybe >10ish times then my boss will complain I've flooded the engine. Mcculloch pro 700 chainsaw that keeps flooding the spark plug out The only way to get it to run is to drain all the gas out and let it dry out then it will start if you put lil gas in it? The mixture contains the wrong ratio of petrol to oil. A few months ago my dad bought an Echo Cs 3400 chainsaw.