Dip the filter in gas and see if it will freely run through the other side. If the engine does not get enough air to burn fuels, then it became shut down. A faulty chainsaw is not only an inconvenience to diagnose and fix, but it is also a hindrance to productivity. According to Hunker, an ignition coil’s function can be checked by removing it from the head of the engine and pulling the starter cable while looking at the spark plug. Working around the house has always been a big part of my life. Clean the filter or buy a new one. Hi! Changing the spark plug is an excellent place to start as it is easy to do, and spark plugs are relatively inexpensive to buy. Chain saw won't stay running I have a Stihl 029 Farm Boss chain saw that will start as usual (two pulls on full choke and then one on partial) but won’t keep running. If it looks okay, then it probably is, but it may be wise to replace it anyway, as fuel filters are cheap, and a visual inspection may not reveal the problem even if there is one. Connect with us on the following social media platforms. As the chainsaw is used and the chain heats up, it will become loose. Fuel is only good for 8 weeks from the day you purchased it. Make a mental note of the position of the screwdriver slot. No Video Available. Fuel issue won't stay running. It can be as simple a solution as that. This is because carburetors are a pain to rebuild and are expensive to replace entirely. There are a few reasons why your chainsaw might not be idling. If your chainsaw won’t idle and requires constant restarting a simple trim can end up taking all day – and even worse if you are working on a commercial job! 32cc gasoline chainsaw with Prosumer Top Handle, Universal and reliable GreenWorks 20312 cordless chainsaw, Light and compact Echo CS-330T gasoline chainsaw, Light and professional STIHL MS 192 T gasoline chainsaw. The final piece of the internal combustion puzzle after spark and fuel is, of course, air. If you don’t see a spark, replacing your ignition coil may solve the problem. I was given a Homelite Timberman 45 (18" bar, 45cc engine) a few years back. This is due to the high volume of conflicting information out there about this topic. To fix the problem you should check and clean the fuel system and carburator. The gas might be old – If unused for a long time, the volatile components of the gas will evaporate and it will not ignite. For the Low Speed screw, repeat the procedure in idle. Running a lean mixture for too long will cause irreversible damage to the internals of the engine. If there is an issue with any one of the above components, it may cause your chainsaw to not stay running for long after it has started, if it will start at all. No Full Inspection Has Been Done But Our Basic Inspection Noted: Engine Turns Over W/ Great Feeling Compression & STARTS UP BUT WON'T STAY RUNNING. The ignition coil is responsible for delivering a charge to the spark plug, giving it the power that it needs to create a spark and lite the air-fuel mixture in the combustion chamber. Unbiased Research Methodology, Light and compact Oregon CS250-A6 cordless chainsaw, General tips about gasoline chainsaw tune-up, Semi-professional and reliable McCulloch CS 400T gasoline chainsaw, Choosing the best gasoline chainsaws for novices, STIHL MS 192 T vs. Husqvarna T435 gasoline chainsaws – competition of power and size, Homeowners like Craftsman 40V cordless chainsaw, Light and powerful Husqvarna T435 gasoline chainsaw with top handle, Just good and average STIHL MS 362 C-MQ gasoline chainsaw, Review of reliable Echo CS-303T gasoline chainsaw, Extremely heavy and powerful STIHL MS 880 Magnum gasoline chainsaw, Hitachi (14?) If there is an obstruction, remove it if possible, or get all new fuel lines. Give it a good cleaning to remove any clogging or blockage. I'm Peter, the owner of BackyardGadget. If you’ve checked all the possible problems and corrected them and your chainsaw still won’t stay running – it might be time to bring it to the service center for a carburetor check-up.