We got rid of both of those useless things . Take off the muffler or the carb to get access. It may not display this or other websites correctly. The switch might be damaged or the motor is burned out. Thanks. You should also make sure the new gas you use is appropriate for the chainsaw. Several reasons can cause your Stihl chainsaw to bog down when your pull the trigger. When your Stihl chainsaw doesnt start after changing the spark plug and fuel, some common problems to look for can help diagnose the source of the issue. The starter assembly often fails to rotate due to a weak connection between the pulley and the ignition rope. Also take the spark plug out and do the same. The key on the flywheel is in place and not sheered. I would never put water in it! I have a MS250 that has come up on compression since new. I love to write about chainsaw for homeowners and professionals. Start new topic; Recommended Posts. If you refuel your chainsaw and it still won,t start, below are some of the possible causes and solutions that will get the chainsaw functioning again. I think that's what I'd do. Stihl 251 chainsaw. In a similar vein, if the wrong kind of oil is used, the compression may be increased. When it comes to power tools, good maintenance, and proper use will maintain the functionality and lifespan of the tool regardless of whether it is an electric miter saw or a gas power chainsaw. Pull the starter rope until you hear the first sign of it firing with a small burp. Turn the brake off. Try blowing the crankcase out with air. If you introduce an extremely fine trickle of water into a running engine through the carburettor that may remove some carbon . As stated it is with a hot engine so the water turns into steam in the cylinder and helps bust up the carbon. It's supposed to warm up later this week so I'll be able to do some more on this chain saw. Every chainsaw requires a different compression level according to its built-up and model number. Disconnect the spark plug from the engine and inspect if it is damaged, eroded, or dirty. I missed the "no carbon". I think that's what happened, although I didn't think such a small amount could do it. Mar 22, 2017. Use a screw wrench to loosen the nuts on the guide bar side panel to give you room to adjust the chain. It's possible the timing is off a little but without knowing the make and model of the saw that's just a long shot. Any help out thereEGBinOR Get you some Sea Foam at the local auto parts store. link to Indoor Fly Traps: 5 Things You Didn't Know About Indoor Fly Traps. Replace the spark plug with a new identical. Generally covering everything under 25 HP. The excess gas can be cleared simply by removing the plug and operating the starter a few times. Additionally, most spark plugs come pre-gapped. Try it, it may just do the trick! lol. Once it's removed, you can place a gauge on the place of the spark plug. To ensure correct functioning and to prevent excessive compression, you might have to repair worn-out parts with new ones. The plug should be tight against your thumb. Put a solder in the sparkplug hole, turn the flywheel until the piston touch the solder, then measure the solder. If you regularly use the chainsaw, then there might be the possibility that your starter spring breaks off. You can check the compression by pulling the spark plug out and holding it in your hand. Register today and take advantage of membership benefits. (there is some play when flywheel on shaft (nut not attached) 3. tank and oiler vents are operating 4. exhaust has been removed and spark arresting screen checked (clean) 5. piston/walls checked.. no scarring Chainsaw Parts. Insert the air filter and the spark plug, reconnect the spark plug wire, and close the opening. By getting your pool ready for the winter, you can make sure it will be ready to use in the spring. To inspect the guide bar, disassemble the chain cover, chain and bar. Neighbor brought me his Stihl MS250 complaining that it tries to pull his arm from socket when starting. Have had it into dealer and nothing wrong with it and dealer said that from time to time they see saws come in with nothing wrong with them but have increased compression. If this does not fix the issue, it may be necessary to replace the whole starting rope system with another one. You will notice the compression less. Gas with ethanol also burns hotter than gasoline which can cause the engine to overheat and burn the plug electrodes. The first step is to remove the cover that covers the spark plug on your chainsaw. Is the spark plug the correct one for the saw? That model is extremely easy to flood. A chainsaw Battery blinking red is one of the most frustrating things a woodcutter can, Read More How To Fix Chainsaw Battery Charger Blinking Red?Continue, The standard compression reading required for most 2-cycle chainsaw is around 100-110 psi to start. Manage Settings Starting fluid will make the fuel more combustible and makes the process of clearing out the combustion chamber much quicker. You can check the compression by pulling the spark plug out and holding it in your hand. Maybe take the plug out & pull the cord several times to blow out any excess fuel, then see how it pulls. If oil is in there it is what makes the engine feel like it is almost locked up. That is the nature of a 250. The chain oil will keep the chain lubricated, keep off dirt and allow smooth movement. Maybe take the plug out & pull the cord several times to blow out any excess fuel, then see how it pulls. Why is the Garage Door Opener Light Not Working? A flooded engine is when there is too much gas in the combustion chamber, usually due to repeatedly starting the chainsaw using the recoil system without the engine starting. "@type": "ImageObject", The saw is about 2 years old, light use. We have explained the most effective way to unflood a chainsaw engine below. 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.. Does the saw have a compression release? Stihl oil has been used. Also try removing the spark plug and see how pull starter works, just trying to see if it could be binding in the recoil/starter assy or not. It will be apparent if it is, but usually a scored saw won't run good, if at all. Stihl recommends using 89 octane gasoline without ethanol, and the gas should not contain more than 10% ethanol. It may not display this or other websites correctly. Not sure I would do it to a saw, but the engine is running at rather high rpm when the water is sprayed into the carb air inlet. Once the 250 is running, its fine. Usually, this happens when you use a chainsaw after a very long time or by wear and tear of the rope. ProTip: You can use a small air compressor to blow air through the air filter and get rid of the loose dust before proceeding to clean it further. A heavy-duty engine gets hot faster and works better than a cold engine. Soaking in water will do nothing but rust things up . Trying to rotate the chain while a huge piece of wood is . Quoting Removed, click Modern View to see What?? I thought all the fuel was out but there was some in the line yet. Make sure there is oil in the engine. That is what was told to me by the area distributor technician That is the nature of a 250. Guido Hello EGBinOR, If A two cycle engine gets flooded BADLY, oil can separate from the gas mix, accumulate in the crankcase and creates an hydrostatc lock. Consequently, operating this chainsaw becomes a really difficult chore to do. Below are the reasons the chain keeps coming loose and how to fix it. Runs well, except it. When the oil pimp or oiler is faulty, it will reduce the chainsaws performance and power. So, If you feel too much compression while pulling a chainsaw, the possible reasons might be as below. When starting, slowly pull the rope to where it pulls hard before starting your actual starting pull. }, The purpose of a choke in a chainsaw is to make cold starting more effortless, but if you do not use it properly. To test the recoil starter, remove it and reposition the spring. let it idle over lunch, just made sure to not go too long between filling it with gas, while running of course. Youre familiar with how to start a stihl yes? Replace the fuel filters instead of cleaning them as they are pretty affordable and easy to install too. However, these moving parts, to stay moving, require a substantial amount of compression. In other words, the problem is in the trigger itself, not a. carb adjustment screw. Cleaned air filters and both were very dirty. It is a prevalent issue and can be fixed and detected easily without consulting a mechanic. Would not be afraid to do it to a 4, 6, or V-8. runs way too fast. The chainsaw motor engine capacity can range from 30CC and 50CC to 150 CC. Once you identify the cause of high compression, you can repair that affected part or find a new replacement for it to make it work smoothly. TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. Also check the air filters and make sure they are clean. No compression when pulling start rope. I hope you understand the problems why your chainsaw is hard to pull. The compression limit should also be doubled if the engine capacity is 100 CC. The piston and rings are very shiney. Use of this Web site constitutes acceptance of our. Dont substitute it with. A 50CC engine needs 150 PSI compression. When you are doing a cold start, push the choke lever to the warm start when the engine starts to run. If you find the brake drum moving, you must replace the needle bearing. Uninstall the spark arrestor and unblock it using a brush, but you can also replace it for efficiency. 24" is what I've got on mine, but it can handle a bigger bar. Have had it into dealer and nothing wrong with it and dealer said that from time to time they see saws come in with nothing wrong with them but have increased compression. Remove the sprocket and the washer. Unscrew the spark plug wrench using a spark plug from the engine. If it is not physically damaged, clean it with clean gasoline and a rag. A chainsaw engine generates this compression through the explosion of the fuel in the combustion chamber and the movement of the crankcase. We describe all the possible issues and also suggest the solutions to fix them too. Little two stroke motors as on chainsaws have to have a lot of compression to make the needed power. Use a brush and cloth to clean and remove any dirt, mud, or debris that can interfere with the controlsclean around the chain brake lever, the air filter housing, and the filter. I got it going. Cleaned air filters and both were very dirty. Quoting Removed, click Modern View to see That would be quite the trick to get the oil to separate out of the gas, LOL. If the compression is not produced in the engine at an appropriate level, it will not be able to convert fuel into energy. I think that's what I'd do. } The saw feels good in my hands and its got a surprising amount of power. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Continue with Recommended Cookies. Therefore, most people will wonder why the chainsaw has too much compression. If oil is in there it is what makes the engine feel like it is almost locked up. I bought an old beater 621 Jonsered once that had very high compression, got it running well and sold it, made some money on it!
