stihl chainsaw too much compression

Indoor fly traps are an effective way to keep insects away from your home. It is harmful to your machine to use old fuel. The Pulley compartment plays a massive role in retracting the ignition rope. 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. Reddit and its partners use cookies and similar technologies to provide you with a better experience. Any ideas? As the starter, spring plays a vital role in running starter assembly smoothly. If your chainsaw doesnt automatically turn it off or you forget, the engine cuts off immediately. "@id": "https://www.yesterdaystractors.com/" It is typical for the Stihl chainsaw to develop some issues, and when this happens, some basic troubleshooting will help identify the source of the issue and solution to help it run smoothly. If so, show him how to start it on the ground with his foot in it or with the rear handle between his thighs. of compression. The lack of oil dries the chainsaw assembly, which causes high compression and becomes very difficult for you to handle the chainsaw. Little two stroke motors as on chainsaws have to have a lot of compression to make the needed power. Sometimes, this might be triggered by another problem that is impacting your system. Starting fluid will make the fuel more combustible and makes the process of clearing out the combustion chamber much quicker. Carboned rings will decrease not increase compression. everything is harder in a tree, not a conclusive test. If there is any damage to the pulley at any stage, it will cause High Compression or stiffness during a pull.. Yes I tried that last time and it did help some. You will notice the compression less. The ideal pressure range of the Stihl chainsaw is between 90 and 110 psi. I got it going. Don't put water into the 2 stroke. I've done it to high hour Kohler engines many times. You are misunderstanding WHY water is put into carboned up engines. Then Google decarb . 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. Being new carb, wasn't looking that direction educate a non mechanic. Ensure the wires leading to the On/Off switch are not tangled or in contact with the metal part of the engine if there is no spark. "interactionType": "https://schema.org/CommentAction", Unscrew the clutch assembly on top of the oil pump. I;ve read somewhere to put water? Additionally, most spark plugs come pre-gapped. Use a screw wrench to loosen the nuts on the guide bar side panel to give you room to adjust the chain. To clean it, drain the fuel, spray some carburetor cleaner and loosen the residue with a small brush. Most of the time, the chainsaw cord became hard to pull because of the Starter Housing. Make sure it's greased and the bushings are good. You should also make sure the new gas you use is appropriate for the chainsaw. Hello D beatty, Here is a link for two stroke engine air cycle, Guido. It is like there is too much compression. Remove ignition coil and muffler. 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. If it has damaged parts, replace it with a carburetor kit that fits your chainsaw model. It has barley been used, no carbon in muffler, still happens with muffler off, does not happen with sparkplug out. $20.00 shipping. Try taking it out, Then holding the trigger while you pull fast. Any ideas? The saw feels good in my hands and its got a surprising amount of power. Friction is usually the cause of a rope failing to draw when it should. John Deere and its logos are the registered trademarks of the John Deere Corporation. I would suspect the timing is too early. Don't put water into the 2 stroke. I would never put water in it! Blup throttle to bring it down to idle. You are misunderstanding WHY water is put into carboned up engines. Stihl 291 chainsaw too much compression Check the compression of the engine. Pull the starter rope until you hear the first sign of it firing with a small burp. If you regularly use the chainsaw, then there might be the possibility that your starter spring breaks off. The excess gas can be cleared simply by removing the plug and operating the starter a few times. So, in our suggestion, one of the first things to check while feeling high compression is the starter spring. "name": "Yesterday's Tractor Co.", It can be from something as simple as starting the chainsaw wrongly to more severe issues like a damaged carburetor. 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. Quoting Removed, click Modern View to see Don't put water in the saw-ever. water will not dissolve carbon; it is far too hard to be effected. water will not dissolve carbon; it is far too hard to be effected. My /Sthil 034 is very difficult to start. Use of this Web site constitutes acceptance of our. Make sure you have a replacement spark plug on hand in case the problem recurs in the future. 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?? 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. Check for side play in the crankshaft. or Best Offer. 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. in the, All Rights Reserved. "@type": "ImageObject", Sometimes the spring stops working correctly due to overuse and becomes brittle. Loosen the nuts and bolts clockwise and then pull out the oil pump gently. You can also quickly fix this anomaly by ensuring a proper troubleshooting of the pulley compartment to find damages. Back to top derwen1959 Long Time User Put a solder in the sparkplug hole, turn the flywheel until the piston touch the solder, then measure the solder. I have a MS250 that has come up on compression since new. 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. In addition, you should check the muffler and piston while youre at this point. Also take the spark plug out and do the same. Yeah, I must have flooded it as I was working on it. Move the selector lever up one position immediately or the saw will flood on the very next pull. Take off the muffler or the carb to get access. When people did it years ago it was with 4 stroke engines where the water is flowing straight into the cylinder. . The exhaust is black but no build up. If the compression is too high or too low, the engine wont start. You may also want to go ahead and replace the plug. Check the spark plug of the chain saw if the engine is not starting at all. Likewise, low compression in the engine will be slow and retarding and it is a warning sign of leakage in your engine. There are sprays (power tune) for removing carbon, but I doubt if that's your problem. #3. Carboned rings will decrease not increase compression. Repair or replace the damaged part 2. It is best to put a new plug in after clearing. 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. I went with a meteor piston/cylinder set. Consequently, always use the right oil and make sure that your chain saws starting mechanism is lubricated to prevent excessive compression while starting the saw. Stihl recommends using 89 octane gasoline without ethanol, and the gas should not contain more than 10% ethanol. Fine adjust everything and both saws start Normal now. All it needs is a few inches missing and it will pull too hard like the compression is too high. 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. Make sure it fits snug. Wipe off any dirt and debris and check for any signs of damages. I agree the saw runs great, but when your helping old men with ideas of their own its hard to say I wish I had 190 pounds of compression. Keep in mind that good maintenance and storage will reduce breakdowns and maintain your tools performance throughout its lifetime. An engine is fit on the rear side of a chainsaw. The Stihl chainsaw uses a four-position lever ignition system called the master control lever. My name is Chris Ross. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. The first step is to remove the cover that covers the spark plug on your chainsaw. Pull the rope until it starts. I'll even do the labor for free. Continue with Recommended Cookies. When the engine starts running, turn the choke off. I get it going now and its easier but its still a bear. 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. Soaking in water will do nothing but rust things up . Of all the Stihl saws, the MS250 is the toughest to start in relation to it's size. Check the electrode gap of the spark plug and ensure it is 0.02 inches. 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. Does the saw have a compression release? Im Nelson, a DIY enthusiast with a bottomless can-do attitude. Hello. link to Indoor Fly Traps: 5 Things You Didn't Know About Indoor Fly Traps. It would give you rusted bearings. If that doesnt work, try gently tapping on the side of the bulb with a screwdriver or other tool. 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. Also, remove the muffler and check for carbon buildup. Stihl MS290 MS390 MS310 Chainsaw Has Oil Tank Engine Housing Assembly OEM/ Bin G . Recognised as a leading saw in the forestry industry, it is available in guide bar lengths 13"/32cm to 18"/45cm. Drain and discard the old fuel, mix new fuel and cycle oil in the ratio 50:1 in a container, shake it and then pour the mixture into the chainsaws fuel tank. Choke cannot be used even when engine cold, or flooding occurs. Thanks. Little two stroke motors as on chainsaws have to have a lot of compression to make the needed power. Generally the minimum is 110 lbs. in the cylinder overnight because the rings are cerboned up? MS250 start compression relief stopped working. 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. 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. I;ve read somewhere to put water? Didnt somehow get straight oil in the cylinder did you? Ron Cook. If it has to do with small engines, it's welcome here. That is what was told to me by the area distributor technician Check for side play in the crankshaft. The saw is about 2 years old, light use. The compression limit should also be doubled if the engine capacity is 100 CC. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. 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. The Stihl chainsaw is a two-stroke gas-powered tool that uses a substantial amount of compression to pull fuel from the tank, mix it with air and ignite it to produce energy that runs the chainsaw. Check for broken teeth on the chain and replace them if necessary. Also check the air filters and make sure they are clean. My first chain saw was an old Homelite EZ with a blue metal case and a 20" bar. Your ignition rope must be intact properly with the pulley to work correctly. It's an older saw I bought at a garage sale. Soaking in water will do nothing but rust things up . When the air that reaches the chain saw's engine is insufficient, it becomes prone to overheating. Ok folks, I'm stumped. You can unclog the carburetor if the clog is minor. Wash the dirty filter with a non-abrasive detergent and water. "datePublished": "2017-08-17", 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. When people did it years ago it was with 4 stroke engines where the water is flowing straight into the cylinder. "author": { Some of the contributing reasons include a full tank of oil, carbon buildup on the exhaust system, and malfunctioning spark plugs. Not sure it would accomplish anything on a 2-stroke chain saw engine. You will notice the compression less. 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. Let saw run until its warmed up, and go cut wood. 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?? You can check the compression by pulling the spark plug out and holding it in your hand. The flywheel is loose? Activate the chain brake and then place the chainsaw on a flat, leveled surface. Compression problems are usually due to an air leak in the engine, usually around the gaskets and seals of the crankshaft. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. If this does not fix the issue, it may be necessary to replace the whole starting rope system with another one. I've done it to high hour Kohler engines many times. However, you still have to confirm the size of the gap before installing. Manual for my Stihl saws and leaf blower says to scrape carbon out of the exhaust port. Temperature Of The Engine A heavy-duty engine gets hot faster and works better than a cold engine. Check the chainsaws fuel if you have not used the tool for a while. "url": "https://www.yesterdaystractors.com/graphics/smllogo.png", The choke should be closed during a cold start to limit the air and increase the fuel in the engine to keep it running while it warms up. If the chainsaw engine dies when you release the throttle, turn the low-speed screw with a screwdriver clockwise until it stops and then turns it counterclockwise once. It is usual for the chainsaw chains to come off with continued use, but there is usually an underlying cause when its too repetitive. Make sure there is oil in the engine. 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! Hello EGBinOR, 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, Guido. A clear sign that you may have a chainsaw engine is when you smell gas while starting 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. Quoting Removed, click Modern View to see That would be quite the trick to get the oil to separate out of the gas, LOL. I bought 2 032 Stihl saws at auction that pulled very hard. Finally the fuel will be converted into energy. Gas with ethanol also burns hotter than gasoline which can cause the engine to overheat and burn the plug electrodes. $49.99. I got it started. First thing I'd check is the pull start assy. When you are doing a cold start, push the choke lever to the warm start when the engine starts to run. If A two cycle engine gets flooded BADLY, oil can separate from the gas mix, accumulate in the crankcase and creates an hydrostatc lock. 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. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Winterize Your Pool Like a Pro: A Comprehensive Guide for Home owners. The chain oil will keep the chain lubricated, keep off dirt and allow smooth movement. Would have to remove spark plug and rinse cylinder with gas to be able to start. Take off the side cover, bar and chain and see if there is any play in the clutch side of the crank. As stated it is with a hot engine so the water turns into steam in the cylinder and helps bust up the carbon. Locate the tension adjustment screws to the side of the chainsaw guide bar. Would not be afraid to do it to a 4, 6, or V-8. check the cylinder & piston for carbon build-up, how much compression Does the chainsaw Engine need, How To Reset Echo 58-Volt Battery Charger. We describe all the possible issues and also suggest the solutions to fix them too. Remove The Chainsaw's Spark Plug Set The Pressure Test Gauge Tug On The Chainsaw's Starter Rope Reset The Chainsaw's Spark Plug Do The Thumb Test Remove The Spark Plug Place Your Thumb Over The Hole Tug On Your Chainsaw's Starter Rope Problems Caused By Too Little Or Too Much Compression Low pressure in a chainsaw High compression in a chainsaw Now, how much compression the engine of a chainsaw needs depends upon its motor capacity and temperature. Check the choke of the chainsaws engine and make sure it is completely closed. 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. It will be apparent if it is, but usually a scored saw won't run good, if at all. "@type": "WebPage", Put a solder in the sparkplug hole, turn the flywheel until the piston touch the solder, then measure the solder. Too much hot or cold engine does not work or even start to produce vacuum pressure inside engine. JavaScript is disabled. Always change the spark plug after 100 operating hours of the chainsaw to avoid engine problems. On a 2 stroke the water would go into the crank case first and pool up. Sometimes an adapter is needed to make a tight fit. Locate the spark plug from the top of the engine underneath the chain brake handle. It may not display this or other websites correctly. When you start your chainsaw, the crankshaft spins, creating vacuum pressure on the carburetor, pulling the gas from the tank and into the combustion chamber where it mixes with air and ignites. Would not be afraid to do it to a 4, 6, or V-8. All it needs is a few inches missing and it will pull too hard like the compression is too high. Make sure it is snug but can also move freely by hand. By getting your pool ready for the winter, you can make sure it will be ready to use in the spring. JavaScript is disabled. 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. "width": 200, When starting, slowly pull the rope to where it pulls hard before starting your actual starting pull. I was given (estate) a small McCulloch chain saw and it started and ran great. If any of these components are worn or broken, the chain saw wont start even with fuel. Pour starting fluid into the carburetor and crank the engine several times. Every chainsaw requires a different compression level according to its built-up and model number. Try it, it may just do the trick! Maybe take the plug out & pull the cord several times to blow out any excess fuel, then see how it pulls. I thought all the fuel was out but there was some in the line yet. Soaking in water will do nothing but rust things up . A 50CC engine needs 150 PSI compression. If you introduce an extremely fine trickle of water into a running engine through the carburettor that may remove some carbon . I used to have a Homelite that would do that if I left gas in it. A cold engine will need the compression of 50-100 PSI whereas a hot engine will require compression above 150 PSI. Would have to remove spark plug and rinse cylinder with gas to be able to start. First thing I'd check is the pull start assy. 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. If the compression is not produced in the engine at an appropriate level, it will not be able to convert fuel into energy. My question is what is causing the trigger to not slow down. I bought 2 032 Stihl saws at auction that pulled very hard. stihl ms290 farm boss; By Ron Cook December 27, 2017 in General Chat. Stihl MS 250 Chain Saw: The pull start will barely move the flywheel. 1. saw has new carb 2. flywheel has been removed and key inspected. This compression converts fuel (any source) into the potential energy in the engine to start it. Are you sure the starter rope isn't a little too short? As the chain moves over the bar, it spreads the oil across the moving parts to reduce friction and heat. When starting the motor when its col, you should engage the choke position to increase fuel intake and reduce air to allow the engine to start. After that, using a ratchet, remove the spark plug from the engine. Uninstall the spark arrestor and unblock it using a brush, but you can also replace it for efficiency. 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. To inspect the guide bar, disassemble the chain cover, chain and bar. or Best Offer. 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. 4 Possible Problems & Solutions Problem 1: Damaged starter housing Solution: 1. Being in the cutting services for more than 10 years, I know a thing or two about chainsaw. 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. So, replacing the ignition rope is a better option to keep everything working smoothly without any damage. I have plenty of engines with REALLY low compression that I'll be glad to swap him. Usually, this happens when you use a chainsaw after a very long time or by wear and tear of the rope. Dont substitute it with. When the oil pimp or oiler is faulty, it will reduce the chainsaws performance and power. Unscrew the spark plug wrench using a spark plug from the engine. If I drop start it I can pull it through 1 compression stroke. I think you'll like it. If the chainsaw is too much compression, it may be difficult to start. This is because each machine is made differently and has various needs. Check if the wires are damaged or broken and replace them if necessary. Save my name, email, and website in this browser for the next time I comment. It had a compression release, and it started and ran well. I've seen it happen a couple times. 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.

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