Flooding usually happens due to an underlying issue: a bad spark plug, bad gas, or a faulty carburetor. after that I'd be looking at crank bearings. Free shipping. On a 2 stroke the water would go into the crank case first and pool up. I have plenty of engines with REALLY low compression that I'll be glad to swap him. Continue with Recommended Cookies. 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. No compression when pulling start rope read more Expert Stihl ms 180 chain saw, new carb, spark plug, compression stihl ms 180 chain saw, new carb, spark plug, compression 110, new gas, still won't start what next, piston is not scored. The exhaust is black but no build up. If you are trying to start your chainsaw in winter and the oil you used for the chainsaw assembly is not suitable for the winter season, you also feel high compression. The other reason might be the use of the wrong type of oil for the climate. Spark plugs that are not functioning properly are another probable cause of excessive compression. There are sprays (power tune) for removing carbon, but I doubt if that's your problem. Our aftermarket suitable replacement Stihl MS 250 C chainsaw compression release parts meet or beat OEM specs, offer a considerable cost savings, and usually ship in 24 - 48 hours. 1. saw has new carb 2. flywheel has been removed and key inspected. As stated it is with a hot engine so the water turns into steam in the cylinder and helps bust up the carbon. The compression limit should also be doubled if the engine capacity is 100 CC. 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! 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. And some will have more. Make sure the keyway is lined up correctly and tighten the nut down good and tight. It has barley been used, no carbon in muffler, still happens with muffler off, does not happen with sparkplug out. Chainsaws are very powerful tools, and if theyre not properly maintained, they can easily overcompress the chain, which can cause it to break. Stihl chainsaw low compression diagnoses and How To Dave's Small Engines 8.89K subscribers Subscribe 17K views 2 years ago This video shows a Stihl MS310 chainsaw I have apart from low. Check the chainsaws fuel if you have not used the tool for a while. Try blowing the crankcase out with air. It has barley been used, no carbon in muffler, still happens with muffler off, does not happen with sparkplug out. Pull the rope until it starts. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. I hope you understand the problems why your chainsaw is hard to pull. 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. 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. 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. First, remove the cylinder and piston from the chainsaw. I'll even do the labor for free. Don't put water into the 2 stroke. It was easier to pull after I cleaned it up, but still tough. Turn the brake off. "interactionStatistic": { I;ve read somewhere to put water? Would not be afraid to do it to a 4, 6, or V-8. The other cause of your chainsaws high compression could be the stuck ignition rope. Subsequent starts are just as hard. I've done it to high hour Kohler engines many times. Your chainsaws compressive strength is measured with the use of a screw-in gauge. Does the saw have a compression release? It would give you rusted bearings. Thus far, you have learned how to diagnose most problems with the Stihl chainsaw and how to fix the issues. Animated Two Stoke Engine Air Cycle, My husky 266xp has been that away from newjust pull over slow for 2 or 3 times and then try cranking.. My husky 266xp has been that away from newjust pull over slow for 2 or 3 times and then try cranking.. I'm hearing thats just the nature of the beast. It may not display this or other websites correctly. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. My chainsaw has gotten very hard to pull the rope. That is the nature of a 250. Remove the spark plug with a spark plug wrench and clean it with a brush to remove carbon scoring and dirt. I missed the "no carbon". When people did it years ago it was with 4 stroke engines where the water is flowing straight into the cylinder. Im Nelson, a DIY enthusiast with a bottomless can-do attitude. Even with new spark plugs in, incorrectly removing and installing the spark plugs can prevent the engine from starting. You need to pull the exhaust to check that. I've seen it happen a couple times. Indoor fly traps are an effective way to keep insects away from your home. Not sure it would accomplish anything on a 2-stroke chain saw engine. Wipe off the excess fuel from the spark plug with a clean rag. chain saw compression release mod. The chain oil will keep the chain lubricated, keep off dirt and allow smooth movement. If it is too damaged, you should replace it. Fuel filters trap dirt and contaminants from the fuel to prevent them from damaging the engine. No it wouldn't go straight to crankcase because you would spray a light mist through air intake with hot engine and let it run for a while after doing it.You might want to do it with screen removed from muffler. A cold engine will need the compression of 50-100 PSI whereas a hot engine will require compression above 150 PSI. To avoid flooding the chainsaw when cold starting, turn the control lever to half choke after the fourth pull and then turn the lever again to the open choke position immediately when the engine starts. Little two stroke motors as on chainsaws have to have a lot of compression to make the needed power. Take off the muffler or the carb to get access. Change in temperatures and dirt will cause clogging anywhere the oil passes, and this can prevent the oil from spread all across the bar. This is because your oil is not rated to get to work at a low temperature. 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. The carburetors work in a chainsaw engine allows the right amount of fuel and air mixture into the combustion chamber. "author": { A chainsaw with no spark will shut down suddenly or not start at all. If A two cycle engine gets flooded BADLY, oil can separate from the gas mix, accumulate in the crankcase and creates an hydrostatc lock. }, Any ideas? The purpose of a choke in a chainsaw is to make cold starting more effortless, but if you do not use it properly. Get it ported and it brings it to another level. For 503552201 Cylinder Compression Plug Package Include: 3 x Cylinder Plug Cylinder Compression Plug no, afraid I don't have equipment to test. "@id": "https://www.yesterdaystractors.com/" Trying to rotate the chain while a huge piece of wood is . The Stihl chainsaw comes with a sturdy body, strong teeth, and a smooth rotating bar to help you cut through trees, ice, and even concrete with ease and precision. Make sure you have a gauge with a schrader valve right at the tip of the spark plug adapter or you will get a low reading every time. Open the spark plug hole facing away from you, remove the wire from the spark plug and disconnect the spark plug using a spark plug wrench. Admitted Woodaholic. Thank you for the responses. I think you'll like it. It's also possible the piston or cylinder are scored or carboned up. Winterizing a pool is an important step in maintaining the longevity and health of your pool. 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! The engine must be up to operating temperature, spray a light stream of water into the engine carb air inlet and the cold water shocks the hot carbon and the carbon flakes off and blows out the exhaust pipe. My one and only MS250 was a kicker to start it but that was the only problem. This compression converts fuel (any source) into the potential energy in the engine to start it. lol. You never try to get it to run with the choke on. People sometimes try to cut down a tree that is too big for their chainsaw. It's also going to be wise to try to put the chainsaw somewhere that isn't exposed to constant sunlight since that can be a contributing factor to the oxidation. Remove the spark plugs and the e-clips attached to the sprocket on the engine shaft. Fine adjust everything and both saws start Normal now. 3 9 9 comments Best Add a Comment Revolutionary-Act469 2 yr. ago Doesn't pull at all or just hard to pull. Reddit and its partners use cookies and similar technologies to provide you with a better experience. Unscrew the clutch assembly on top of the oil pump. You are misunderstanding WHY water is put into carboned up engines. Poke the oil feed hole with a 16-gauge wire to unclog it until it slides through the hole smoothly. Make sure there is oil in the engine. If the compression is not produced in the engine at an appropriate level, it will not be able to convert fuel into energy. Check for clogging around the bar oil. It is usual for the chainsaw chains to come off with continued use, but there is usually an underlying cause when its too repetitive. Any ideas? "text": "My chainsaw has gotten very hard to pull the rope. How to Reprogram a Chamberlain Garage Door Opener, How to Program a Universal Garage Door Opener, Toro Lawnmower Troubleshooting & How To Guide, Bostitch Nail Gun Troubleshooting & How to Guide. water will not dissolve carbon; it is far too hard to be effected. 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. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. Could be the main bearings are loose, look for evidence of the coil rubbing the flywheel. I used to have a Homelite that would do that if I left gas in it. Ivor from uk here and I have a stihl chainsaw and when I am hedge laying or pletching as it is called the saw only runs for 15 or 20 seconds or perhaps 1 minute at the most if there is a big cut to make the spark plug tip builds up with carbon,i use proper 2 stroke oil at a ratio of 25to1 does any pletching or hedge laying go on across the pond?? Sounds flooded, or maybe wrong sparkplug? If any part of a carburetor has issues, the right amount of fuel/air mixture wont pump into the chamber, therefore, preventing the engine from starting. The excess gas can be cleared simply by removing the plug and operating the starter a few times. The extra effort to pull the saw is probably due to carbon build up on the piston crown and combustion chamber. Lift the bars nose and tighten the nuts on the sidebar to secure the sidebar and guide bar in place. Carboned rings will decrease not increase compression. Typically, several reasons cause too much compression in a chainsaw and these include but are not limited to: Old contaminated chainsaw fuel Chainsaw Starter rope issues Faulty spark plugs Chainsaw Carbon buildup Insufficient Chainsaw Oil Old and contaminated fuel Get you some Sea Foam at the local auto parts store. "datePublished": "2017-08-17",
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