I hope my epic guides will help you to choose,buy and maintain chainsaw. I've done it to high hour Kohler engines many times. 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. "dateModified": "2017-08-17", It takes a Bosch WSR6F or NGK BPMR7A. . Temperature Of The Engine A heavy-duty engine gets hot faster and works better than a cold engine. I've got one here with 105-110 compression that I can't get to run and it feels kinda funny when I pull the starter rope, like it has compression with the piston going up and down. Does the saw have a compression release? Pull the starter rope until you hear the first sign of it firing with a small burp. Replace the fuel filters instead of cleaning them as they are pretty affordable and easy to install too. Being new carb, wasn't looking that direction educate a non mechanic. Posted December 27, 2017. Stihl 026 Chainsaw hard to crank - retrofit compression relief valve Welcome! Stihl ms 291 ? Here's How to Fix It Quickly stihl ms290 farm boss; By Ron Cook December 27, 2017 in General Chat. 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. 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. It runs good after I get it started. Wipe off any flammable fluid from the metal surface of the engine with a clean rag. Activate the chain brake and then place the chainsaw on a flat, leveled surface. Make sure it's greased and the bushings are good. Would not be afraid to do it to a 4, 6, or V-8. You can also quickly fix this anomaly by ensuring a proper troubleshooting of the pulley compartment to find damages. Low pressure, 20 to 30 pounds is all you need. My husky 266xp has been that away from newjust pull over slow for 2 or 3 times and then try cranking.. 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?? Versions MS 260, Bar length 37cm, RSC If you find the brake drum moving, you must replace the needle bearing. If it looks physically fine after cleaning it and you havent changed it in a few seasons, you should still replace it. After that, using a ratchet, remove the spark plug from the engine. The purpose of a choke in a chainsaw is to make cold starting more effortless, but if you do not use it properly. Neighbor brought me his Stihl MS250 complaining that it tries to pull his arm from socket when starting. Reddit and its partners use cookies and similar technologies to provide you with a better experience. Because of an absence of lubrication, the chain saw system becomes brittle, resulting in excessive compression of the chain saw mechanism. 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. Put a solder in the sparkplug hole, turn the flywheel until the piston touch the solder, then measure the solder. Wipe off lubricant and grime from the bar with a clean rag. Check for any cracks and damages and replace if necessary. It prevents the carburetor from allowing too much fuel into the combustion chamber. Additionally, most spark plugs come pre-gapped. Check for dirty fuel tanks, clogged fuel filters, loose pipes, clogged air filters, and a dirty carburetor, which can all the fuel volume going into the combustion chamber. If you introduce an extremely fine trickle of water into a running engine through the carburettor that may remove some carbon . We describe all the possible issues and also suggest the solutions to fix them too. Modern View Forum powered by phpBB 2001, 2005 phpBB Group. Help, can't pull start Stihl MS250 chainsaw, too much compression An engine is fit on the rear side of a chainsaw. How to Test Stihl 180 Compression CIMFLOK.COM If you experience low compression, pull the muffler and check the piston and cylinder for, Read More How Much Compression Should a Chainsaw HaveContinue, The possible reasons can be the battery not being charged, properly connected, or dead. When the engine starts running, turn the choke off. First thing I'd check is the pull start assy. #3. What Causes Too Much Compression on Poulan Chain Saws? If this is the case, you may want to try lubricating the rope to see if it would assist to resolve the difficulties. You may also notice that the chain saw loses power during operation. This is because your oil is not rated to get to work at a low temperature. As long as I can get it going.. Once the 250 is running, its fine. Unscrew the spark plug wrench using a spark plug from the engine. My name is Chris Ross. I;ve read somewhere to put water? Hold the saw firmly to the ground and crank the engine about four to six times to bleed out the fuel from the combustion chamber. 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. Most Stihl chainsaws have a resistance of 0.2-3.0 ohm on the primary coil and 5-20 kiloohm on the secondary coil but always confirm the correct reading for your model number. I've done it to high hour Kohler engines many times. You can use a ratchet to do the task. You will notice the compression less. It has barley been used, no carbon in muffler, still happens with muffler off, does not happen with sparkplug out. Locate the spark plug from the top of the engine underneath the chain brake handle. If you introduce an extremely fine trickle of water into a running engine through the carburettor that may remove some carbon . Press question mark to learn the rest of the keyboard shortcuts. The saw feels good in my hands and its got a surprising amount of power. But it was stolen along with other tools around 1990. It would give you rusted bearings. Remove the air filter cover and then slide off the rubber spark plug connector from the spark plug. Then, use a wire brush to remove all the carbon build-up from the cylinder and piston. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Hold the tip of the blade and adjust the tension of the chain correctly. I pulled them over with plug out ,They seemed to pull normal and believe they were fuel locked. A heavy-duty chainsaw requires a large amount of compression, whereas a chainsaw with a smaller engine needs less compression to convert fuel into energy. As stated it is with a hot engine so the water turns into steam in the cylinder and helps bust up the carbon. Oct 24, 2011 / Chainsaw excessive compression #1 . How To Fix Chainsaw Battery Charger Blinking Red? }, That is what was told to me by the area distributor technician Check for side play in the crankshaft. I thought all the fuel was out but there was some in the line yet. Also take the spark plug out and do the same. If the chainsaw is too little compression, it may start easily but will not run smoothly. Just wondering what your opinions are of the lowest compression you can run a Stihl MS250 at. Turn the idle speed clockwise until the saw idles and chain turns, and then make a one-fourth counterclockwise turn. If it does maybe it is plugged. Don't know what to do at this point. If you could start an engine with the choke closed and not turn off the choke on time, you will end up flooding the engine with too much gas. The choke position is the fourth setting on the master control lever. A chainsaw is going to be exposed to oxidation over time, but you can at least limit the process by storing your chainsaw well. Make sure it is snug but can also move freely by hand. "name": "Egbinor" I bought it used around 1978. What is the minimum compression for my STIHL chainsaw? I used to have a Homelite that would do that if I left gas in it. You never try to get it to run with the choke on. 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. 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. Indoor fly traps are an effective way to keep insects away from your home. An excessive amount of compression in your chainsaws starting rope could also be indicated by the beginning rope failing to draw. Chainsaw Parts. 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. Wash the dirty filter with a non-abrasive detergent and water. If it has to do with small engines, it's welcome here. Doesnt pull at all or just hard to pull. If it is hard to pull, then check how the spring is performing. Every chainsaw requires a different compression level according to its built-up and model number. 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. In most cases, a buildup of carbon under the rings presses the rings against the cylinder, culminating in compression of the cylinder. But the saw just has a rubber piece on the top shroud with a slotted nut that just fastens it to a stud on the cylinder head, where the valve should be. Stihl chainsaw low compression diagnoses and How To - YouTube The carburetor sucks fuel from the tank, mixes it with the right amount of air, and pushes the mixture into the combustion chamber. After all these operations are carried out, it is necessary to once again clean the saw from dirt, then turn it upside down and unscrew the four screws securing the engine to the chainsaw body. Remove the spark plugs and the e-clips attached to the sprocket on the engine shaft. Wipe off the excess fuel from the spark plug with a clean rag. If you still have questions regarding high chainsaw compression, you can discuss them in the comments. "description":"Discussion of Chainsaw has too much compression in the Tool Talk forum followed by comments. Press question mark to learn the rest of the keyboard shortcuts. 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 water will not dissolve carbon; it is far too hard to be effected. Confirm the spark plug gap, check and adjust with a feeler gauge or gaping tool. Stihl chainsaw compression test Joe_Power Jun 2, 2015 Not open for further replies. "userInteractionCount": 23 Take off the side cover, bar and chain and see if there is any play in the clutch side of the crank. It was metering lever. As the guide bar wears down with use, the bar heel- the part of the bar nearest to the drive sprocket- also wears down, which increases the distance the chain travels as the bar grooves become less effective. That is what was told to me by the area distributor technician That is the nature of a 250. Make sure the gap is according to the specifications of your chainsaws engine. At this point, the battery will reset,, Read More How To Reset Echo 58-Volt Battery ChargerContinue, The chainsaw battery charger is constantly blinking red, even after charging for a long time!!! For a better experience, please enable JavaScript in your browser before proceeding. There are sprays (power tune) for removing carbon, but I doubt if that's your problem. If not I'm honestly kinda stumped. This increased distance will cause the chain to keep coming out of the guiding bar with the vibrating saw. A reddit for all operators of chainsaws to post experience with tools, pictures of their new saws and old workhorses and any maintenance tips. If it is flooded that should clear it up. 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. Similarly, a 4-stroke engine needs 2 times more compression than a 2-stroke engine, around 180-210 PSI. You are misunderstanding WHY water is put into carboned up engines. Didnt somehow get straight oil in the cylinder did you? Remove the air filter, wash it with detergent and water and scrub off the dirt with a brush. If so, show him how to start it on the ground with his foot in it or with the rear handle between his thighs. On a 2 stroke the water would go into the crank case first and pool up. When the oil pimp or oiler is faulty, it will reduce the chainsaws performance and power. Guido Quoting Removed, click Modern View to see What?? Don't put water into the 2 stroke. I think that's what I'd do. Thank you for the responses. 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. When people did it years ago it was with 4 stroke engines where the water is flowing straight into the cylinder. Take off the muffler or the carb to get access. That is what was told to me by the area distributor technician. As a result of using bad fuel or leaving fuel in the chainsaw for a long time, the fuel evaporates and leaves behind a sticky substance that accumulates and clogged the carburetor. It may not display this or other websites correctly. Getting these problems resolved is a rather straightforward process. Other than damaged parts, using the choke position to start a warm saw often causes a flooded engine. Ron Cook. or Best Offer. sthil 034 hard to pull the cord in Chainsaws - The Forestry Forum Choke cannot be used even when engine cold, or flooding occurs. Mar 24, 2019. Always change the spark plug after 100 operating hours of the chainsaw to avoid engine problems. Block the spark plugs hole by putting a nylon rope to prevent the piston from moving. 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.. Use an adjustable wrench to loosen the two nuts on both sides of the chainsaw. However, this will vary by model and compression readings alone are not enough to determine the condition of the engine. Manage Settings Over time, soot from the engine clogs up the spark arrestor causing the chainsaw to stall. Try taking it out, Then holding the trigger while you pull fast. or Best Offer. Stihl chain saw too much compression I had to take it apart 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'm an arborist by profession & a blogger by passion. Let saw run until its warmed up, and go cut wood. Loosen the nuts and bolts clockwise and then pull out the oil pump gently. A compression gauge is used to measure the compression of a chainsaw which works similarly to the tire gauge. Refill the chain oil by opening the cap on the chain oil tank, filling up the tank until the level is below the cap threads, and then replace the lid. I would suspect the timing is too early. Has someone invented a new kind of two stroke motor? Register today and take advantage of membership benefits. 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. Thus far, you have learned how to diagnose most problems with the Stihl chainsaw and how to fix the issues. If you suspect a compression issue, seek professional help as compression repairs can be complicated. A hot engine also requires more compression to convert furl into energy as compared to the colder one. When there is no air for the spark to ignite, the chainsaw will start and then die after a short while. Loosen the nuts holding the clutch cover and disconnect the chain shroud and remove the oil plate. Likewise, low compression in the engine will be slow and retarding and it is a warning sign of leakage in your engine. Fuel filters trap dirt and contaminants from the fuel to prevent them from damaging the engine. Continue with Recommended Cookies. 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. Also check the air filters and make sure they are clean. Why is the Garage Door Opener Light Not Working? 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. "text": "My chainsaw has gotten very hard to pull the rope. "publisher": { The chain oil will keep the chain lubricated, keep off dirt and allow smooth movement. Also check the air filters and make sure they are clean. No carbon on top or on roof of cylinder. Chainsaw has too much compression - Yesterday's Tractors 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. Little two stroke motors as on chainsaws have to have a lot of compression to make the needed power. Hello. To ensure correct functioning and to prevent excessive compression, you might have to repair worn-out parts with new ones. runs way too fast. (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 When this pressure, or compression, is too low or high, the chainsaw . Register today and take advantage of membership benefits. 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. Sometimes the spring stops working correctly due to overuse and becomes brittle. My one and only MS250 was a kicker to start it but that was the only problem. A lot of variables might contribute to excessive compression while using a chainsaw. Sometimes, this might be triggered by another problem that is impacting your system. Hope this helps. The extra effort to pull the saw is probably due to carbon build up on the piston crown and combustion chamber. That is what was told to me by the area distributor technician, 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. A clogged carburetor wont allow fuel into the engine, preventing it from starting. You are using an out of date browser. How Many Amps Does a Garage Door Opener Use? Carbon buildup is yet another important factor in the increasing compression experienced by chain saws over time. No compression when pulling start rope. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. Insufficient fuel in the system may result in excessive compression. If you do not replace the starter spring on time, it will cause you to replace the whole starter assembly. Stihl oil has been used. They're easy to use and inexpensive, so if you are considering buying one for your home, there are a few quick things you Consumers in the Home and Garden sector turn to us for answers to their nagging questions about various goods and services. In fact, Stihl thinks so highly of Motomix, that they will double the factory warranty on their Stihl 2-stroke tools if you use it. I love to write about chainsaw for homeowners and professionals. Fine adjust everything and both saws start Normal now. There are sprays (power tune) for removing carbon, but I doubt if that's your problem. The compression limit should also be doubled if the engine capacity is 100 CC. If the chainsaw still wont start, it is defective and requires a replacement. 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. 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. Greenworks Commercial GS181 82V 18-inch Chainsaw: 50cc gas equivalent power with a stock 18-inch bar and chain ( starting at $349) When you are doing a cold start, push the choke lever to the warm start when the engine starts to run. A clear sign that you may have a chainsaw engine is when you smell gas while starting it. Therefore, most people will wonder why the chainsaw has too much compression. Below are the reasons the chain keeps coming loose and how to fix it. 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. Would not be afraid to do it to a 4, 6, or V-8. When it comes to compression values, those between 90 and 110 psi are deemed to be acceptable. What usually happens is that the guide bar gets stuck in the tree and they keep running the engine while trying to force the bar out of the tree somehow. Check the electrode gap of the spark plug and ensure it is 0.02 inches. Thanks! When starting, slowly pull the rope to where it pulls hard before starting your actual starting pull. Check the chainsaws fuel if you have not used the tool for a while. 3 9 9 comments Best Add a Comment Revolutionary-Act469 2 yr. ago Doesn't pull at all or just hard to pull. When people did it years ago it was with 4 stroke engines where the water is flowing straight into the cylinder. I would never put water in it! Any help out thereEGBinOR Get you some Sea Foam at the local auto parts store. Mar 22, 2017. The Stihl 066 chainsaw uses the same type of engine most gasoline-powered yard tools use, a two-cycle combustion engine. Do that to the starter side when you're looking at the starter assy. An example of data being processed may be a unique identifier stored in a cookie. Usually, this happens when you use a chainsaw after a very long time or by wear and tear of the rope. I've seen a 20psi drop with the wrong type of gauge to be pretty common. It is best to put a new plug in after clearing. JavaScript is disabled. For 503552201 Cylinder Compression Plug Package Include: 3 x Cylinder Plug Cylinder Compression Plug 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. Cleaned air filters and both were very dirty. So, If you feel too much compression while pulling a chainsaw, the possible reasons might be as below. I bought 2 032 Stihl saws at auction that pulled very hard. Move the selector lever up one position immediately or the saw will flood on the very next pull. My /Sthil 034 is very difficult to start. The other cause of your chainsaws high compression could be the stuck ignition rope. I would suggest clearing the cylinder by pulling the rope with the plug out. You can prevent the new starter rope from fraying by burning the two ends of the rope. 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. The chainsaw motor engine capacity can range from 30CC and 50CC to 150 CC. { 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. The following have been addressed. That would have to be some puddle of oil for a MS250 to have a "bar oil leaking in and causing high compression problems" What kind of Stihl oil regular or synthitc, had an 025 years ago that was a real knuckel buster never checked compression but was using regular Stihl oil. check the cylinder & piston for carbon build-up, how much compression Does the chainsaw Engine need, How To Reset Echo 58-Volt Battery Charger. I've got four other Stihl saws here, an 029, 036Pro, 015L, and an MS200T, only the 36Pro pulls this hard and only if I don't use the decomp button. The saw runs and starts great. I;ve read somewhere to put water? As stated it is with a hot engine so the water turns into steam in the cylinder and helps bust up the carbon.
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