$99.95. If the issue persists after the addition of new fuel to the tank, there may be a fault with the gas pipelines or the fuel filters. When people did it years ago it was with 4 stroke engines where the water is flowing straight into the cylinder. You may also notice that the chain saw loses power during operation. "mainEntityOfPage": { 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. $799.99 CHOOSE AN OPTION Deliver From Store e.g., 123 Your Street, Virginia Beach, VA 12345 Add to Cart Order Online - Pick Up In Store Currently Shopping At: JC Licht Ace Hardware-Bridgeport (773) 523-8888 Change My dealer Features STIHL M-Tronic Low pressure, 20 to 30 pounds is all you need. The chainsaw has grooves all around the outer edge of the guide bar, and the chain has teeth that run within the bar rail to keep the chain in place and moving straight. Indoor fly traps are an effective way to keep insects away from your home. Starting fluid will make the fuel more combustible and makes the process of clearing out the combustion chamber much quicker. If it is over loading on fuel the carb may need rebuilt to stop the diaphragm from leaking fuel into the cylinder after the saw is shut off. 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. Always change the spark plug after 100 operating hours of the chainsaw to avoid engine problems. How To Fix Chainsaw Battery Charger Blinking Red? Now, how much compression the engine of a chainsaw needs depends upon its motor capacity and temperature. Replaced the chain and did some serious cutting and was so pleased. Stihl 064 | Outdoor Power Equipment Forum I used to have a Homelite that would do that if I left gas in it. What is the minimum compression for my STIHL chainsaw? water will not dissolve carbon; it is far too hard to be effected. Just wondering what your opinions are of the lowest compression you can run a Stihl MS250 at. Required fields are marked *. chain saw compression release mod - Red Power Magazine A chainsaw engine generates this compression through the explosion of the fuel in the combustion chamber and the movement of the crankcase. Check for side play in the crankshaft. As the starter, spring plays a vital role in running starter assembly smoothly. I would suspect the timing is too early. I think that's what I'd do. A lot of variables might contribute to excessive compression while using a chainsaw. link to Winterize Your Pool Like a Pro: A Comprehensive Guide for Home owners. Convenient, durable and robust with minimum weight, the STIHL MS 260 can come with a number of optional features to make the job even easier. I used to have a Homelite that would do that if I left gas in it. 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. Confirm the spark plug gap, check and adjust with a feeler gauge or gaping tool. It is basically the same product as TruFuel (same base synthetic fuel with different synthetic oil) that is sold through Stihl dealers and endorsed for use in all Stihl 2-stroke engines. What worked with my MS440 kicking problem should also work with that one. Pull the recoil off and check for binding Pull rope or starter pawls misaligned. water will not dissolve carbon; it is far too hard to be effected. I'm an arborist by profession & a blogger by passion. Keep in mind that good maintenance and storage will reduce breakdowns and maintain your tools performance throughout its lifetime. Gas with ethanol also burns hotter than gasoline which can cause the engine to overheat and burn the plug electrodes. If the coil is faulty, there will be no spark to start the engine and run the chainsaw. Stihl ms 291 ? Here's How to Fix It Quickly You are using an out of date browser. Quoting Removed, click Modern View to see What?? Why is the Garage Door Opener Light Not Working? Sometimes an adapter is needed to make a tight fit. Typically, several reasons cause too much compression in a chainsaw and these include but are not limited to: Another common cause of chainsaw compression problems is a faulty quantity of old gasoline. 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. If you still want to try and get carbon out of the saw either take it apart and clean it or use something along the lines of sea foam. The vibration of the tool during use can run some fasteners loose, preventing it from starting again. I bought it used around 1978. Over time, soot from the engine clogs up the spark arrestor causing the chainsaw to stall. Remove the ignition coil, test it using a multimeter or an ignition coil tester, and confirm your chainsaw models resistance specification. 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. There might be a small stone or thing that is stuck inside the starter and causes the rope not to retract. Low pressure, 20 to 30 pounds is all you need. It's also possible the piston or cylinder are scored or carboned up. Don't put water into the 2 stroke. Stihl MS290 Hard to pull recoil | Hearth.com Forums Home Every chainsaw requires a specific amount of compression if this compression is more or less than the required amount, the engine will not be able to produce energy from the fuel source, and it will be exhausted faster. Soaking in water will do nothing but rust things up . 3Pcs/lot Cylinder Compression Plug For STIHL 044 046 066 MS440 MS460 "@id":"https://www.yesterdaystractors.com/cgi-bin/viewit.cgi?bd=toolt&th=435118", Do that to the starter side when you're looking at the starter assy. Compression is measured by using a simple screw-in gauge. Obviously, the motor, which has a huge capacity, will require more compression. I think you'll like it. This compression converts fuel (any source) into the potential energy in the engine to start it. Stihl 024 - Sherlock Holmes issue - help needed here. So be sure to keep your chainsaw properly maintained and avoid compression problems. Apparently gas would seep int crankcase and over several months of setting gas would evaporate leaving oil behind and first time it was pulled would suck oil into the cylinder. Advanced arborist chainsaw with a top handle and STIHL M-Tronic technology. The choke position is the fourth setting on the master control lever. Help, can't pull start Stihl MS250 chainsaw, too much compression It was metering lever. First thing I'd check is the pull start assy. The carburetor sucks fuel from the tank, mixes it with the right amount of air, and pushes the mixture into the combustion chamber. To clean it, drain the fuel, spray some carburetor cleaner and loosen the residue with a small brush. If this is the case, you may want to try lubricating the rope to see if it would assist to resolve the difficulties. When this pressure, or compression, is too low or high, the chainsaw . Thanks! Make sure the gap is according to the specifications of your chainsaws engine. The compression limit should also be doubled if the engine capacity is 100 CC. #1. The owner is complaining of hard to pull start. 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. The chainsaw motor engine capacity can range from 30CC and 50CC to 150 CC. Remove the air filter, wash it with detergent and water and scrub off the dirt with a brush. Usually, this happens when you use a chainsaw after a very long time or by wear and tear of the rope. Currently I live in Austin, United States. If the rails are shallow, you need to replace them. Manual for my Stihl saws and leaf blower says to scrape carbon out of the exhaust port. Also take the spark plug out and do the same. $49.99. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Free shipping. You can check the compression by pulling the spark plug out and holding it in your hand. 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. Each chainsaw has a different level of compression. Keep in mind that the stuck ignition rope can also damaged other parts inside the starter assembly. Ron Cook. While rope attached to a pulley, the further connection of the pulley is with springs and pawl to make sure the pulley is tensioned and helps in retracting and spinning. Try it, it may just do the trick! Your email address will not be published. When it comes to compression values, those between 90 and 110 psi are deemed to be acceptable. You have an option to either pull off the starter and clean it or look for an ideal replacement for your starter house. Quoting Removed, click Modern View to see Don't put water in the saw-ever. This is bad practice, and can damage your chainsaw. Use a screw wrench to loosen the nuts on the guide bar side panel to give you room to adjust the chain. Register today and take advantage of membership benefits. Pull the starter rope and look for a blue spark between the electrode of the spark plug. Pull trigger and set full choke. Unscrew the clutch assembly on top of the oil pump. I would suspect the timing is too early. Afterward, the beginning rope is pulled repeatedly until the gauge comes to a full stop on its own. I think that's what happened, although I didn't think such a small amount could do it. Didnt somehow get straight oil in the cylinder did you? I changed to synthitic. Over time or when using the wrong fuel, the fuel filter becomes too clogged and restricts fuel flow, killing the engine shortly after starting. or Best Offer. This Indoor Fly Traps: 5 Things You Didn't Know About Indoor Fly Traps. Final step: removing the old spark plug and installing the new one. 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. Also check the air filters and make sure they are clean. And some will have more. Could be the main bearings are loose, look for evidence of the coil rubbing the flywheel. I thought all the fuel was out but there was some in the line yet. I was given (estate) a small McCulloch chain saw and it started and ran great. 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. I've been working on a Stihl 026 chainsaw that John found, and it is very hard to crank. Can anyone make a suggestion. The plug should be tight against your thumb. ", I hook up a drill to the nut on the clutch and start hard starting saws that way . A highly compressed engine will not be able to work smoothly because of the too much pressure on engine and you will find it hard to start the engine. It is like there is too much compression. A two-stroke gas-powered chainsaw uses relatively few moving parts. after that I'd be looking at crank bearings. Does the saw have a compression release? link to Indoor Fly Traps: 5 Things You Didn't Know About Indoor Fly Traps. Repair or replace the damaged part 2. Change in temperatures and dirt will cause clogging anywhere the oil passes, and this can prevent the oil from spread all across the bar. Register today and take advantage of membership benefits. The switch might be damaged or the motor is burned out. It was easier to pull after I cleaned it up, but still tough. Check if the wires are damaged or broken and replace them if necessary. Soaking in water will do nothing but rust things up . "interactionStatistic": { Then, use a wire brush to remove all the carbon build-up from the cylinder and piston. It is significantly tougher to pull over than an 024 or the new 241. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Additionally, most spark plugs come pre-gapped. A clogged carburetor wont allow fuel into the engine, preventing it from starting. Stihl is a leading manufacturer of chainsaws and other handheld outdoor and landscaping power tools. Turn the brake off. Generally the minimum is 110 lbs. Stihl Chainsaw running too fast - HomeOwnersHub I have had the cylinder off. Remove the spark plugs and the e-clips attached to the sprocket on the engine shaft. Thanks. A very loose chain will cause the blades to come out of the bar, while a very tight chain is also not ideal for the proper functioning of the chainsaw. Make sure you have a replacement spark plug on hand in case the problem recurs in the future. Use of this Web site constitutes acceptance of our. The saw is about 2 years old, light use. However, the compression also has a limitation because a very high or very low compression will cause problems and prevent your chainsaw from operating efficiently. "url": "https://www.yesterdaystractors.com/graphics/smllogo.png", It has barley been used, no carbon in muffler, still happens with muffler off, does not happen with sparkplug out. An example of data being processed may be a unique identifier stored in a cookie. The consent submitted will only be used for data processing originating from this website. Hello. Back to top derwen1959 Long Time User Yeah, I must have flooded it as I was working on it. Put a solder in the sparkplug hole, turn the flywheel until the piston touch the solder, then measure the solder. Don't put water into the 2 stroke. Check the choke of the chainsaws engine and make sure it is completely closed. Try it, it may just do the trick! That is the nature of a 250. If it has to do with small engines, it's welcome here. Check the tension 2. It runs good after I get it started. This increased distance will cause the chain to keep coming out of the guiding bar with the vibrating saw. Posted December 27, 2017. Try blowing the crankcase out with air. When this comes to a stop, it will come to a complete stop at a certain number, which is the compression of your chainsaw blade. I can probably find one with at most 65 PSI. So, replacing the ignition rope is a better option to keep everything working smoothly without any damage. I'll even do the labor for free. If I drop start it I can pull it through 1 compression stroke. You are using an out of date browser. You will notice the compression less. Thus far, you have learned how to diagnose most problems with the Stihl chainsaw and how to fix the issues. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. Wipe off any dirt and debris and check for any signs of damages. 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?? Try blowing the crankcase out with air. The excess gas can be cleared simply by removing the plug and operating the starter a few times. If it is hard to pull, then check how the spring is performing. "height": 57 Chainsaw has too much compression - Yesterday's Tractors Remove the sprocket and the washer. Pull the rope until it starts. Not sure it would accomplish anything on a 2-stroke chain saw 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, (quoted from post at 00:57:42 08/18/17) My chainsaw has gotten very hard to pull the rope. The purpose of a choke in a chainsaw is to make cold starting more effortless, but if you do not use it properly. I hook up a drill to the nut on the clutch and start hard starting saws that way . Remove the filter, engine control lever and Stihl carburetor. Any ideas? The correct tension of the chainsaw chain should be slightly loose on the guide bar but tight enough that you cant pull the drive links out of the bar to fix the chain tension issues; follow the steps below. When people did it years ago it was with 4 stroke engines where the water is flowing straight into the cylinder. The Stihl chainsaw uses a four-position lever ignition system called the master control lever. That is what was told to me by the area distributor technician Check for side play in the crankshaft. lol. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. 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. Also check the air filters and make sure they are clean. If you suspect a compression issue, seek professional help as compression repairs can be complicated. I;ve read somewhere to put water? Any ideas? When the fuel starts to turn stale, it gums up and clogs the carburetor just as it would in an unused lawnmower. Chainsaw has too much compression - Tool Talk Forum Stihl MS290 MS390 MS310 Chainsaw Has Oil Tank Engine Housing Assembly OEM/ Bin G . Would have to remove spark plug and rinse cylinder with gas to be able to start. If it looks physically fine after cleaning it and you havent changed it in a few seasons, you should still replace it. Quoting Removed, click Modern View to see That would be quite the trick to get the oil to separate out of the gas, LOL. Temperature Of The Engine A heavy-duty engine gets hot faster and works better than a cold engine. 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. Then Google "decarb". Stihl chain saw too much compression I had to take it apart Other Professional Battery-Powered Chainsaws We Recommend: Stihl MSA 220 C-B 36V 16-inch Chainsaw: Solid design and increased power backed by Stihl's dealer network. Problem starting Stihl 032AV chainsaw - Houzz Stihl 291 chainsaw too much compression Check the compression of the engine. Make sure it fits snug. Sometimes, this might be triggered by another problem that is impacting your system. Create an account to follow your favorite communities and start taking part in conversations. Hope this helps. You will notice the compression less. Is the spark plug the correct one for the saw? Fine adjust everything and both saws start Normal now.