stihl chainsaw too much compression

Try blowing the crankcase out with air. Take better care of your chainsaw and perform regular maintenance according to the manufacturers recommendations to prevent any of these problems. You will notice the compression less. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. 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. After that, using a ratchet, remove the spark plug from the engine. High compression in chainsaws is a dangerous problem that can lead to serious injuries. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. As the chain moves over the bar, it spreads the oil across the moving parts to reduce friction and heat. 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. "name": "Yesterday's Tractor Co.", 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. Use a can of carb cleaner sprayed into the breather/filter assembly. A 250 has a fair amount of compression for a smaller saw but not that bad. I just picked up a well used 025 that runs like a champ and has quite a bit of compression, I have not put a gauge on it but it will pull the starting handle out of my hands if I'm not paying attention. Create an account to follow your favorite communities and start taking part in conversations. 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. Too much carbon will do that, check the piston top and combustion chamber. It works when cold-starting the engine, when the engine is idle and when the engine is open. Check the chain oiler and ensure it is functional. Sounds flooded, or maybe wrong sparkplug? To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Quoting Removed, click Modern View to see That would be quite the trick to get the oil to separate out of the gas, LOL. Make sure it's greased and the bushings are good. water will not dissolve carbon; it is far too hard to be effected. The exhaust side of the piston is a warm gold. You never try to get it to run with the choke on. If you notice the treads are worn, which prevents the device from pumping, replace it with a new one. Similarly, a 4-stroke engine needs 2 times more compression than a 2-stroke engine, around 180-210 PSI. That is the nature of a 250. Make sure it's greased and the bushings are good. 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 oil is in there it is what makes the engine feel like it is almost locked up. The chain oil will keep the chain lubricated, keep off dirt and allow smooth movement. 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. I'm an arborist by profession & a blogger by passion. Cleaned air filters and both were very dirty. Stihl chainsaw compression test Joe_Power Jun 2, 2015 Not open for further replies. 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. The following have been addressed. 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. 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! Try blowing the crankcase out with air. "logo": { Maybe take the plug out & pull the cord several times to blow out any excess fuel, then see how it pulls. Has someone invented a new kind of two stroke motor? The excess gas can be cleared simply by removing the plug and operating the starter a few times. I get it going now and its easier but its still a bear. The saw runs and starts great. For a better experience, please enable JavaScript in your browser before proceeding. The exhaust is black but no build up. "name": "Egbinor" Turn the engine to get under the piston and blow the crankcase out. Low pressure, 20 to 30 pounds is all you need. Replace with a new starter house Problem 2: Damaged pulley system Solution: 1. Its just that its nearly impossible to pull. Rinse the filter and allow it to air dry before reinstalling it. Check for any cracks and damages and replace if necessary. When people did it years ago it was with 4 stroke engines where the water is flowing straight into the cylinder. Advanced arborist chainsaw with a top handle and STIHL M-Tronic technology. First, remove the spark plug from the chainsaw. Sparkplug was correct but I think it was a little flooded. "@context":"https://schema.org", Make sure it fits snug. Please use the navigational links to explore our website. If the chainsaw wont stay running when the engine is idle, adjust the carburetor. The switch might be damaged or the motor is burned out. idle. If the reading is below or above the required range, then your ignition coil requires changing. It is a prevalent issue and can be fixed and detected easily without consulting a mechanic. Then Google "decarb". Therefore, it does not need any compression rate to start. "@type": "Person", Final step: removing the old spark plug and installing the new one. Cleaned air filters and both were very dirty. "url": "https://www.yesterdaystractors.com/graphics/smllogo.png", Of all the Stihl saws, the MS250 is the toughest to start in relation to it's size. Check the tension 2. Hello D beatty, Here is a link for two stroke engine air cycle, Guido. When starting, slowly pull the rope to where it pulls hard before starting your actual starting pull. If any of these components are worn or broken, the chain saw wont start even with fuel. "userInteractionCount": 23 NelsGarage will share the knowledge Ive gathered about different tools and give you tips to accomplish your DIY projects faster. Modern View Forum powered by phpBB 2001, 2005 phpBB Group. Remove the spark plug with a spark plug wrench and clean it with a brush to remove carbon scoring and dirt. You never try to get it to run with the choke on. Most fuels nowadays are a blend of ethanol which attracts moisture and speeds up the rotting process. The starter assembly often fails to rotate due to a weak connection between the pulley and the ignition rope. Back to top derwen1959 Long Time User Ron Cook. I hook up a drill to the nut on the clutch and start hard starting saws that way . OEM GOOD USED STIHL 048AV CHAINSAW SHORT BLOCK ENGINE 120 PSI COMPRESSION. 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. A faulty spark plug will have carbon, dirt, and oil blocking the insulator nose, preventing it from firing consistently. A clogged carburetor wont allow fuel into the engine, preventing it from starting. Likewise, low compression in the engine will be slow and retarding and it is a warning sign of leakage in your engine. A problem in the ignition system is likely to be the culprit when the chainsaw doesnt spark. Carboned rings will decrease not increase compression. What worked with my MS440 kicking problem should also work with that one. of compression. Cleaned air filters and both were very dirty. I hope my epic guides will help you to choose,buy and maintain chainsaw. Make sure there is oil in the engine. If you introduce an extremely fine trickle of water into a running engine through the carburettor that may remove some carbon . This is because your oil is not rated to get to work at a low temperature. An example of data being processed may be a unique identifier stored in a cookie. I'll even do the labor for free. or Best Offer. Carbon build-up in cylinder & piston, bad needle bearing, overused starter spring, oil in the starter system, old or bad fuel, etc can cause too much compression in Chainsaws. When there is too much fuel, it will not ignite, and the engine wont start. Several reasons can cause your Stihl chainsaw to bog down when your pull the trigger. The lack of oil dries the chainsaw assembly, which causes high compression and becomes very difficult for you to handle the chainsaw. Turn the idle speed clockwise until the saw idles and chain turns, and then make a one-fourth counterclockwise turn. For the chainsaw to function appropriately, you must maintain the proper amount of tension on the chain. I used to have a Homelite that would do that if I left gas in it. Check for side play in the crankshaft. Compression is measured by using a simple screw-in gauge. The excess gas can be cleared simply by removing the plug and operating the starter a few times. We're all about fixing small engines, from carburetor rebuilds, to crankshaft machining. 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. The early 064, 044, 066 came with a red master control. Fine adjust everything and both saws start Normal now. I've done it to high hour Kohler engines many times. If you recently refueled your Stihl chainsaw, stale gas can be a reason why it wont start. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . There is no idle when I release the trigger. It runs good after I get it started. However, you still have to confirm the size of the gap before installing. The carburetor sucks fuel from the tank, mixes it with the right amount of air, and pushes the mixture into the combustion chamber. "dateModified": "2017-08-17", 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 Stihl 066 chainsaw uses the same type of engine most gasoline-powered yard tools use, a two-cycle combustion engine. Check the spark plug and replace it if needed. If you suspect a compression issue, seek professional help as compression repairs can be complicated. You can use a ratchet to do the task. Any chance is it hydro locking because of gas? 1 2 Next J Joe_Power Joined Apr 18, 2013 Messages 651 Location USA - Coast to Coast, Border to Border Jun 2, 2015 #1 I just replaced the cylinder and piston on a stihl 036. Afterward, the beginning rope is pulled repeatedly until the gauge comes to a full stop on its own. My name is Chris Ross. Reddit and its partners use cookies and similar technologies to provide you with a better experience. pulls with little resistance, similar to my farm boss. If oil is in there it is what makes the engine feel like it is almost locked up. The owner is complaining of hard to pull start. There are sprays (power tune) for removing carbon, but I doubt if that's your problem. If the air filter is too clogged, you should replace it. Usually, this happens when you use a chainsaw after a very long time or by wear and tear of the rope. Stihl MS290 MS390 MS310 Chainsaw Has Oil Tank Engine Housing Assembly OEM/ Bin G . I tried draining the crankcase with the saw upside . 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. The key on the flywheel is in place and not sheered. Chainsaws are very powerful tools, and if theyre not properly maintained, they can easily overcompress the chain, which can cause it to break. For 503552201 Cylinder Compression Plug Package Include: 3 x Cylinder Plug Cylinder Compression Plug 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. Dust particles in the air mix with the lubricating oil and clog up the air filter, therefore, preventing sufficient air from getting into the engine. As stated it is with a hot engine so the water turns into steam in the cylinder and helps bust up the carbon. Choke cannot be used even when engine cold, or flooding occurs. 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! "@type": "InteractionCounter", It has barley been used, no carbon in muffler, still happens with muffler off, does not happen with sparkplug out. Dont substitute it with. Continue with Recommended Cookies. I think you'll like it. Would have to remove spark plug and rinse cylinder with gas to be able to start. If you buy another battery, make sure it has the same voltage and amperage as the old battery. I will also add that if you have points, then the wrong gap will alter the point of ignition and can have the same results. What ratio mix is he using? 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. Read More Chainsaw Primer Bulb Temporary FixContinue, Pull out your battery from the chainsaw, and press the battery button sustainably for a minimum of 5 seconds before you release it. This increased distance will cause the chain to keep coming out of the guiding bar with the vibrating saw. Ok folks, I'm stumped. Try blowing the crankcase out with air. When there is no air for the spark to ignite, the chainsaw will start and then die after a short while. 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. A drastic and frankly silly thing to do though . More information can be found on this page. Get you some Sea Foam at the local auto parts store. It may not display this or other websites correctly. Winterizing a pool is an important step in maintaining the longevity and health of your pool. Yeah, I must have flooded it as I was working on it. You may also notice that the chain saw loses power during operation. 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. I hope you understand the problems why your chainsaw is hard to pull. Register today and take advantage of membership benefits. I went with a meteor piston/cylinder set. You may also want to go ahead and replace the plug. ", Are you sure the starter rope isn't a little too short? 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. 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. I bought 2 032 Stihl saws at auction that pulled very hard. Also check the air filters and make sure they are clean. I bought it used around 1978. 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 Another big issue that causes too much high compression is the lack of oil in the starter system. Thanks. 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. The saw feels good in my hands and its got a surprising amount of power. 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. Mar 24, 2019. The recoil starter in a chainsaw is a start mechanism that allows you to pull the rope. However, these moving parts, to stay moving, require a substantial amount of compression. Remove the filter, engine control lever and Stihl carburetor. 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. Manual for my Stihl saws and leaf blower says to scrape carbon out of the exhaust port. Thanks! I would suspect the timing is too early. Wear rubber gloves and hold the rubber plug and spark plug about 1-2cm from the metal surface of the engine unit. $75.00. If it does maybe it is plugged. I luv my 064. Locate the spark plug from the top of the engine underneath the chain brake handle. It is best to put a new plug in after clearing. The saw is about 2 years old, light use. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Reassemble the chainsaw, refill the fuel tank, crank the engine and check for oil along the bar. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. If the chainsaw is too much compression, it may be difficult to start. ", "datePublished": "2017-08-17", 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.

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