If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. 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. And we make it easy! Sounds like a case vacuum leaking down or a case pressure leaking down. However I use compression and leak down to verify overall engine condition . Today I experienced a similar problem with my Husqvarna 345. 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. you should see a pretty blue spark??? Check fuel filter is not soft and collapsing especially if it is a inline tube variety. Disclaimer | Terms & Conditions | Privacy Policy | About Us | Contact Us, This is the Type of Gas and Oil Stihl Chainsaws Use. The saw starts easily and runs very strong for about 15 mins, then dies like it's losing spark or fuel. Remove thetop cover, and grab the carb and see if it can be wiggledin relation to the rest of the saw. Unfortunately, over time, this debris can build up on the filter and create a blockage. The chainsaw will bog down or stop running. This may cause the saw to die out when hot. This setting varies by model. 03 - Stihl String Trimmer Carburetor Repair Kit. Unscrew the gas cap, vent the gasses and try to restart your saw. Well I started reading this thread in 2006. Too many options, get help from your local professionals. This also overheats the saw. If you have a moment to pick up a book at the library, seek out Richard Louv's latest, called Last Child in the Woods - Saving our Children from Nature-Deficit Disorder, it will change your life and your children's future development. Giving it throttle only chokes it out. In addition, you will find links to more detailed information on each issue. When the fuels volume is not regulated, theres a huge tendency for it to become too rich. Check the Filters. If you ask me why a gas chainsaw dies or doesnt start, Ill tell you that there are always three factors involved in this issue: the fuel delivery, the ignition system, and the engines compression. Pull cord Its the chainsaws startup mechanism. Bad coil, test it with a meter next time it die's. To control how much gasoline deposits get into the combustion chamber at low speed, adjust the L screw. I think most saws start out at 1 trun to 1 1/2 turns from seated. Idle screws are butterfly valves, which are extremely harmful, so its best to take extra precautions when making this step. Do you envy the magnolia in your neighbor's yard, get some harbingers of Spring into your space. Purchasing a new carb kit, and giving your carburetor a proper cleaning can solve this issue, but occasionally you will need to replace the carburetor entirely, if corrosion is observed inside the part while youre cleaning it. runs well for about 20/30 seconds then dies. I will also look at some other common problems, like why a chainsaw is challenging to start when it is hot. Or there is insufficient compression in the engine due to a failure in piston cylinders. Then turn the screw counter-clockwise 1/4 turn. A worn or damaged piston and cylinder will cause this problem. Throttle Interlock It keeps misuse and accidents for occurring. Check the manual provided by your owner for more specific repair information related to your model. But, on the subject of quality equipment: I bought my Stihl 30 years ago, it has been used ALOT, and has never needed any work whatsoever. No venty. Some testers are adjustable so you can stress the coil beyond the power needed to fire the spark plug, giving you an idea of its overall condition. Air leakage into the carburetor becomes imminent if the carb-engine connection becomes loose. If the high-speed screw is too open, the combustion chamber will accumulate excess air preventing ignition. You will sometimes see this problem in engines where the cylinder and piston have been scored due to too little lubrication in the gas, or if the carburetor is adjusted too lean (not enough fuel). Connect the tester to the spark plug socket and pull the cord in each of the two cases. Nearly every weekend you will find us doing small or big jobs or just enjoying our garden. You can also find information on a chain not turning, the engine only running with the choke on, and more. However, if youre planning to run your chainsaw for any length of time, you will need to replace the spark plug. Super OPE Member. The sprocket enables the chainsaw to spin. The problem disappeared completely and immediately. I have a T435 Husqvarna chainsaw. When you find a clogged fuel line, remove it from the chainsaw and clean it to open the line. The new gasket should create the seal required to keep your engine running. I will look at these causes in more detail and show how to fix them. It purrs. :-(. When it dies give it squirt of gas w/AF off. If you find you have a vacuum in the fuel tank, locate the fuel vent on your Stihl chainsaw and replace it. Turned out great. The fuel delivery deals with the fuel flow from the tank to the engine via the carburetor and the fuel lines. Youre in the middle of a big project when your chainsaw beings to run sluggishly, stalls, and stops running. I will list specific ways of troubleshooting the issue and fix it. To reduce the negative effects of fuel on your Stihl, always use fresh fuel with low ethanol content. Whenever your chainsaw stalls, one of the procedures that experts recommend is to remove the spark plug and examine it, If you see that it is fully caked with carbon deposits, there is a definite sign that the combustion chamber's gas mixture is too rich. This is a common problem that mainly occurs with older chainsaw models. When your Stihl 029 chainsaw has just the right combination of air and fuel in its combustion chamber, and the spark plug is firing normally, the saw will hum contentedly while idling and roar. Adjust the low-speed screw counter-clockwise slowly until you find the sweet spot where it runs smooth and not sluggish if needed. How long the chainsaw runs before dying depends on how badly clogged the air filter is. The heat will cause the coils components to expand, causing it to cut out after a longer period of use. Ouch) When I painted I used BIN primer (2 coats), 1 coat Benjamin Moore primer (oil), and 2 coats Benjamin Moore Advance paint (Simply White). I guess you could swim in your Keds. Chainsaw then works just fine. Fuel tank It is the location of the devices fuel and oil mixture. As the engine runs, heat will build. Found the fuel line was partially collapsed where it connects to the fuel filter. A chainsaw troubleshooting guide, Saving Your Chainsaw With Chain and Bar Oil, Beech Firewood: Everything you need to know, Common reasons why a chainsaw starts then dies, How to Cut a Log Lengthwise with a Chainsaw, Best air compressor under 200 Top 6 reviews and buying guide 2021. Moreover, it could be that the spark plug has worn out to such an extent where it doesnt produce spark until it cools down. i love the saw, but it is hard to start. As the name says, it filters the fuel so that the carburetor gets a clean and uncontaminated fuel charge. These parts get clogged when there are unruly debris and deposits. Just something to check for.If that seems tight, then going through the carb wouldbe my next move, unless you have a model with an externalimpulse line, which should be checked, as well as if youhave a model with a primer bulb.But otherwise I would look inside the carb. After that, closeit down and start your chainsaw. I am having the same problem with my husky 350. It was undergoing a similar issue, and upon investigation, the fuel delivery and ignition system were operating perfectly. If I try carb adjustment, what's a good starting point (how many turns out from fully seated) for the high and low jets? flip to run 4-5 more pulls, now it quit all together. His brainchild, Sawinery, allowed him to do so as well as connect with other craftsmen. When you make purchases through these links, we may earn a small commission. . Why does my chainsaw start and dies? Bar Its the central piece that the chain circles around. Running old gas can be a big culprit, but many other items can cause a Stihl to die. chainsaw starts then after few cuts shuts down clynesn 16 years ago my poulon gas chainsaw will start but after about 3-5 minutes of cutting it conks out and won't start unless I let it sit for 10-15 minutes .then still difficult to start..happened four to five times in a row..it runs out like it is out of gas but the tank has gas. Ensure that theres no vapor lock in the fuel tank. 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. However the problem sounds like Fuel starvation.Suggest you check the following. As mentioned, push do not screw them in place. When the tank isnt able to vent, a vacuum forms that will prevent fuel from leaving the tank to the carburetor. However, when it becomes clogged, the passage of fuel to the engine is obstructed, causing the engine to stall. Could it be a bad fuel pump diaphram? Follow all safety instructions provided in your equipment operators manual prior to diagnosing, repairing, or operating. The plug also works in conjunction with the ignition coil, so you should test the coil to determine that your spark plug is in fact the part thats causing the engine to die. Your devices carburetor is where the air is mixed with fuel in the appropriate ratio. How is the impulse line? When was the last time the fuel filter and lines were replaced? In this post, I will discuss the above factors that lead to this problem in more detail. Feb 27, 2017. I'm having a similar problem with a Poulan model PP4218AVHD. Like the spark plug, an ignition coil that is going bad can stop functioning properly when it warms up. My trusty (10 yr) old Stihl 16" chainsaw is starting fine (have to choke once until it kicks - which has always been the way) but it will only run for 20 or 30 seconds and then dies. The air filter is easily located. Does this sound like a fuel problem? Afterward, you need to examine your carburetor and ensure that the jets are unrestricted and clog-free. Moreover, examine the plugselectrode for signs of black carbon deposits. Performance & security by Cloudflare. Once it will idle slowly increase rpm until it will achieve full throttle . DO NOT use a brush. My customer this morning delayed until 1:00, so I went out to test the 028 some more. A dirty air filter -- which filters air coming through the . Good conversation tricky , still can,t get my head around waiting 1 wk rather than verifying fuel to the plug . It should fire immediately off the carb. Another suggestion is to clean the spark plugs more frequently, but always be careful to avoid the enamel insulator. Use a screwdriver to detach the cover at the back of your saw. Perhaps dock (who as I recall is an engineer) or a physicist could be more precise but I think the general idea is correct.And speaking of dock: The thread he refers to is the most facinating one I have read on this site. Sorry but I am not trying to be disrespectful here of the owner and purcahser, far from it. The above adjustment method could be used to fix most engine problems. Normally, they get coated with black carbon deposits caused by too-rich fuel mixtures. Repeat as necessary to remove the clog. I have the Poulan saw and it cuts out after about 2-4 minutes. One day started surging when hot and then would shut down. Engine Gas-powered chainsaws are still regarded as the standard. The piston ring keeps thegases from entering the crankcase during the compression stroke and maintains sufficient combustionpressure. Anti-vibration handle (OSHA) It lessens tension on the users hands and arms. In the same way, asa fuel filter works, it filters the ambient air before it reaches the carburetor. To start cleaning your saw, remove the cover, often located at the rear of your chainsaw. Remove the air filter and blow it off with compressed air or wash it in soapy water; if it's . The L screw is turned counter-clockwise one full turn. You should invest in a carburetor repair kit. Does your chainsaw die out when cutting at full throttle, despite running well at low speed? Does anyone know how to fix this? But here, the pistons wear rate increased at high temperature due to thermal expansion, which was why its high-temperature compression was almost zero. i also dont know how to check the vent int he gas tank. Furthermore, the spark plug provides the ignition to initiate combustion. All rights reserved. When I checked the fuel line, if broke in half in my hand. Always keep a check on the tanks vents and make sure no debris gets accumulated. 4. A simple way to test the ignition coil is to do a "heat soak test". Vapor lock is surely one of the most common reasons why an engine doesnt start when hot. On the other hand, the engines piston ringhad degraded to the point that the compression measured at high temperature was 0 psi. You can use a vacuum gauge to perform a vacuum test on the fuel tank to determine if you have a problem with the saw venting. Carefully remove the spark arrestor screen. Then continue to turn it counter-clockwise 1/4 turn further. Once the filter is out of the tank, hold the fuel line with needle nose pliers and pull the filter out of the line. I advise bringing your chainsaw to a small engine mechanic or your Stihl dealership for testing and making necessary repairs. It meant that there was not enough oil for the size of his engine. Check out my handy guide Common STIHL Chainsaw Problems for handy charts listing problems and solutions to many common problems STIHL chainsaw owners encounter. For example, in the photo above, the H screw is turned counter-clockwise 3/4 of a turn. But compression measures the piston area which is sealed by piston rings but where the fuel pump impulse connection is made below the piston rings has the case seal and bearings to leak air, and the impulse tube being polymer is subject to age degredation and collapse, even a sticky collapse like a failed fuel filter which could seal the case volume and release over a week due to sheer volume. Like the spark plug, an ignition coil that is going bad stop... Up on the tanks vents and make sure no debris gets accumulated deals. Stalls, and more and making necessary repairs always keep a check on the users hands and arms thegases. Morning delayed until 1:00, so i went out to test the some. Enough oil for the size of his engine down to verify overall engine.. Too open, the fuel delivery and ignition system were operating perfectly planning to run your chainsaw die out cutting... 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Of black carbon deposits caused by too-rich fuel mixtures test it with a Poulan PP4218AVHD. Tricky, still can, t get my head around waiting 1 wk rather than verifying fuel to the of... Air is mixed with fuel in the engine to stall if the high-speed screw is turned counter-clockwise full! The enamel insulator my hand back of your saw, remove the cover at the back of your chainsaw out... System were operating perfectly pressure leaking down still can, t get my head around waiting 1 wk rather verifying! Strong for about 15 mins, then dies like it 's losing spark or fuel an ignition that! From the tank to the engine to stall them in place the spark plug socket pull... Restart your saw, but always be careful to avoid the enamel insulator 1 1/2 turns seated! Valves, which are extremely harmful, so i went out to the!, when it is a inline tube variety your saw the enamel insulator cause problem... 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Line was partially collapsed where it connects to the carburetor gets a clean and uncontaminated fuel charge now it all! See if it can be wiggledin relation to the engine only running with choke... Earn a small engine mechanic or your Stihl, always use fresh fuel with low ethanol.... For example, in the appropriate ratio spot where it connects to carburetor! Especially if it can be wiggledin relation to the spark plugs more frequently, but many items. Hand, the engines piston ringhad degraded to the fuel delivery deals with choke. Functioning properly when it becomes clogged, the fuel delivery deals with the choke on, and.... His engine issue, and more a Poulan model PP4218AVHD and uncontaminated fuel charge and collapsing especially if can... Of the devices fuel and oil mixture is challenging to start cleaning your saw, Sawinery, allowed to. Air preventing ignition easily and runs very strong for about 15 mins, then like! Will cause the saw starts easily and runs very strong for about 15 mins, then dies like 's...

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