How old is it? To reduce the negative effects of fuel on your Stihl, always use fresh fuel with low ethanol content. It also gives one an incite into the character and characters of the site. A vapor lock in the fuel lines is the most common cause of your chainsaw running slowly or dying. If the filter looksclogged, buy a new one toreplace the previous filter. As mentioned, push do not screw them in place. The high temperature causes excessive vapor buildup in the fuel lines, preventing the liquid fuel from flowing into the carburetor. Op has not gotten back to us since Monday , apparently has moved on lol . I just loosen the chain. It is important to note that loosening a screw increases the fuel flow rate and enriches the mixture while tightening the screw has the opposite effect.If the idle screw is too loose, the mixture will be excessively rich, and the chainsaw will not run even at idle. Had a similiar problem with a Poulan 2450 several years ago. Which of these home luxuries would you like best? The fuel delivery deals with the fuel flow from the tank to the engine via the carburetor and the fuel lines. Crape Myrtle stops growing after spring. I had it tuned up, with replacement of all filters and such, and no improvement. These screws have different functions, and when one is tightened or not set properly, it can restrict fuel flow or cause RPMs. Try running without.? If you dont have a tool to perform the test, an indication you may have a plugged vent is if the saw starts and begins to run well with the fuel cap loosened to allow air into the tank. Another good way to test your spark plug is to add some starter fluid from the choke valve. This is one of those weird things that crop up sporadically. The problem lies in your ignition and must be fixed. The most common problem causing your chainsaw to run slow or die out is a vapor lock in the fuel lines. I would advise you to perform a compression test of your chainsaw before starting it when its cold and after its shut down due to heat. If I don't let off of the throttle and go back to idle, it will die out. I suspect the internal idle circuit air leak I will try to rebuild the carb if I can find kits, get the fine passages clean, get the kit install correctly. Typically, older engines are more likely to have scored cylinder walls that add to increased wear and prevent the engine from producing adequate compression, thus leading to the saw dying out. If I try carb adjustment, what's a good starting point (how many turns out from fully seated) for the high and low jets? It is not attractive all winter long (perhaps only to the birds), and not when viewed from the house. Repeat as necessary to remove the clog. Reading this post made me think about my own chain saw. Grubs/vent are easy to fix. The mass flow rate of the air-fuel mixture entering the engine at idle is controlled by the idling (I) screw. Electrolux suggested that as the engine needed to be running to effect the adjustment it was too dangerous to supply me the tool and allow me to do the adjustment.I took this as an insult as I had been doing just that for forty years. How to store a Lawnmower for winter. IMO Usually when this happens it creates a lean condition and stalls due to not enough gas to rev up without stalling. These deposits can clog the jets in the carburetor, decreasing the amount of fuel available to the engine. I'd be agreeing with the sasquatchman and a fuel related problem, or possibly even a fault with the ignition when it gets hot. If there is a mismatch, your piston and cylinder have been damaged depending on its extent. This blockage eventually causes your engine to run lean and, as a result, bog down. You will find a small metal screen on the muffler that keeps hot exhaust material from shooting out of the chainsaw. i also dont know how to check the vent int he gas tank. Here are a few tips for selecting and caring for fuel: Read more about fuel selection and care in This is the Type of Gas and Oil Stihl Chainsaws Use. Check the filters quality. If your chainsaw dies out immediately after a start, it indicates a possible fault either in the fuel delivery or the ignition system of your device. 142.93.111.120 You should invest in a carburetor repair kit. Sprocket and/or clutch If the chain breaks, the clutch is activated to stop the chain from spinning. Air filters are pretty affordable, and they should be replaced once a year to alleviate engine problems. This setting varies by model. If either of these are dirty, it may be causing the saw to stall, and cleaning may solve the problem. I recently came upon a Poulan chainsaw with a single-piston ring in its engine. The air filter is easily located. The spark arrestor screen must be inspected regularly and cleaned when needed. Avoid running your engine on a lean fuel setting as this overheats specific engine components and makes them prone to failure. Turned out to be a plugged up muffler. Clean the screen with a metal brush. When this happens, its best to get a new spark plug instead. When it dies give it squirt of gas w/AF off. The chain and bar might expand at different rates and sizes. Try some carb cleaner spray within the carb and see if it fires if not then compression is an issue . Nearly every weekend you will find us doing small or big jobs or just enjoying our garden. Chain Its the most important piece of the device, which does the cutting. We were unable to add your email to our mailing list. If your chainsaw doesnt stay running, begin troubleshooting by following the steps mentioned below in the same order. Inspect the ignition module with a tester. If it is moving, turn the LA idle screw counter-clockwise until the chain stops moving. JavaScript is disabled. When the coil gets hot, the winding on the coil can separate and short out. When you make purchases through these links, we may earn a small commission. Cloudflare Ray ID: 7a11ba37c98b2c1c It even gives us gorgeous Fall color from there on in. I agree with removing the cutback fruiting tree. This is also the key to prevent piston failure. was adjusted just in case turning the Hi and Low screws does nothing. Consult a professional if you dont have the skills, or knowledge or are not in the condition to perform the repair safely. i have a stihl 290 model. Knock dirt out of the filter or use compressed air to blow air from the inside. Use quality line made for fuel if OEM is not handy/available. These cause clogs, which lock vapors in the tank and prompt engine bogging. Receive money-saving advice and special discounts! To avoid such an incident, loosen and adjust the idler screw. I would not be tempted to walk around the pool barefooted. It would equalize after sitting for a while and run good again later. I have a Poulan Chainsaw rebadged as a McCullock here in Australia. Use a screwdriver to detach the cover at the back of your saw. I typically change the fuel filter before and after the winter season. Youre in the middle of a big project when your chainsaw beings to run sluggishly, stalls, and stops running. Lastly, I would advise you to always mix the engine oil and fuel in a ratio prescribed by the owners manual. Steps, Precautions, Alternatives, Staining Douglas Fir Wood in 7 Steps + Best Stain Colors. I have seen plenty of cases where experienced users run their chainsaws at WOT when it gets stuck while cutting wood and eventually destroys their chainsaws. A Stihl chainsaw may require a carburetor adjustment or it may be experiencing a compression problem that is causing it to quit running. Enjoy the excitement of developing the many uses and activities of your outdoor spaces. You will need an inline ignition tester to do this. Furthermore, the spark plug provides the ignition to initiate combustion. For example, in the photo above, the H screw is turned counter-clockwise 3/4 of a turn. In the case that your chainsaw runs for a while, then dies, it may be possible to simply clean the air filter to correct this symptom. Bar Its the central piece that the chain circles around. If you choose the, Without clear and comprehensive information on vinegars removal and cleaning capabilities, you risk causing irreparable damage to your wooden surfaces, resulting in costly repairs or. 13 Reasons Your Stihl Chainsaw Wont Start (SOLVED! Why does my Chainsaw Die at Full Throttle. Allow the filter to completely air dry. Locate the fuel filter at the bottom of the fuel tank. If it starts you have vapor lock, and will need to carefully inspect the fuel tank's vent hole to . To prevent this from occurring, make sure that the tank vents are not plugged with dirt or debris. Looks like you are making a good start. To perforn this test, run the unit at WOT for 4-5 minutes then immediately shut the unit off and let sit for 2-3 minutes. Check if both ends are cleared by spraying on the other end. This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Can you easily turn the chain by hand when this happens or is the chain difficult to turn. Your chainsaws carburetor is where air and fuel are mixed in the optimum ratio. Spray carburetor cleaner into the line to loosen the clog. I still need to find hardware, No need to feel overwhelmed. For a better experience, please enable JavaScript in your browser before proceeding. Vapor lock.Change the pickup body. Replacee the spark plug, the fuel pickup line and stone, rebuilt the carb and even replaced the ignition module, but nothing has changed at all. I have two vintage saws that have idle problems after warmed up anc cutting for a few min. Fuel tanks can often get vapor locked nowadays due to some ingredients present in the gas. This also overheats the saw. Another problem is prolong storage the little passages get gummed up. Similar project but I am waiting on the counters. If you see a spark put the plug back in remove the air cleaner and squirt a 2 second blast of carb cleaner into the carb. The above adjustment method could be used to fix most engine problems. Make sure the filter is securely attached to the fuel line. The 1 week between starts makes little sense . A punctured fuel line can draw air into the fuel system resulting in a chainsaw running sluggish because too much air is being introduced to the cylinder. The new gasket should create the seal required to keep your engine running. A clogged carburetor is most commonly caused by leaving fuel in the string trimmer for a long period of time. In this case, the most likely cause is air leaks under the rubber pipe connecting the carburetor to the cylinder or its rupture. Similarly, open your gasoline cap for a few minutes to enable the pressure to return to normal. Unfortunately, over time, this debris can build up on the filter and create a blockage. Make sure the spark plug gap is correct and the spark plug wire is securely attached. As a result, your engine will tend to slow down and eventually die out as the supply of gasoline falls short of the amount necessary to sustain the combustion. As the engine runs, heat will build. He has since built an enviable workshop for himself and an equally impressive online accomplishment: an extensive resource site serving old timers and novices alike. 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