To clean it, drain the fuel, spray some carburetor cleaner and loosen the residue with a small brush. You may also want to go ahead and replace the plug. Generally the minimum is 110 lbs. Remove the entire carburetor and clean it. The first step is to remove the cover that covers the spark plug on your chainsaw. Continue with Recommended Cookies. "@type": "ImageObject", Could be the main bearings are loose, look for evidence of the coil rubbing the flywheel. Unscrew the clutch assembly on top of the oil pump. A drastic and frankly silly thing to do though . Below are the reasons the chain keeps coming loose and how to fix it. A faulty spark plug will have carbon, dirt, and oil blocking the insulator nose, preventing it from firing consistently. Make sure you have a replacement spark plug on hand in case the problem recurs in the future. 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. Don't put water into the 2 stroke. Disengage the chain brake, turn on the ignition switch and install the new spark plug into the rubber connector. It takes a Bosch WSR6F or NGK BPMR7A. what and or where is the metering lever.? Some of the contributing reasons include a full tank of oil, carbon buildup on the exhaust system, and malfunctioning spark plugs. "@type": "InteractionCounter", Blup throttle to bring it down to idle. I hope you understand the problems why your chainsaw is hard to pull. 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?? Flooding usually happens due to an underlying issue: a bad spark plug, bad gas, or a faulty carburetor. I bought 2 032 Stihl saws at auction that pulled very hard. I;ve read somewhere to put water? The excess gas can be cleared simply by removing the plug and operating the starter a few times. Carboned rings will decrease not increase compression. Finally the fuel will be converted into energy. It runs good after I get it started. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. lol. It will be apparent if it is, but usually a scored saw won't run good, if at all. Every chainsaw requires a different compression level according to its built-up and model number. I got it going. 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. I believe it was flooded, but I didn't think that little bit of fuel would make it that hard to pull but I guess so since it can't compress! Therefore, most people will wonder why the chainsaw has too much compression. The chainsaw motor engine capacity can range from 30CC and 50CC to 150 CC. MS250 start compression relief stopped working. It is, therefore, necessary to determine if the problem has been remedied by adding fresh fuel. Cleaned air filters and both were very dirty. I hook up a drill to the nut on the clutch and start hard starting saws that way . This is because each machine is made differently and has various needs. 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. Any help out thereEGBinOR Get you some Sea Foam at the local auto parts store. My name is Chris Ross. The excess gas can be cleared simply by removing the plug and operating the starter a few times. Make sure there is oil in the engine. "interactionStatistic": { I hope my epic guides will help you to choose,buy and maintain chainsaw. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . Create an account to follow your favorite communities and start taking part in conversations. The piston and rings are very shiney. }, I've done it to high hour Kohler engines many times. 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 Check for clogged shafts and jets, clogged carburetor, damaged valves, stuck levers, and damaged or warped diaphragms, all of which can interfere with the fueling process. Check the chain oiler and ensure it is functional. 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. Maybe take the plug out & pull the cord several times to blow out any excess fuel, then see how it pulls. Also check the air filters and make sure they are clean. Ask him if he's drop-starting 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. Are you sure the starter rope isn't a little too short? Yeah, I must have flooded it as I was working on it. The saw feels good in my hands and its got a surprising amount of power. Oct 24, 2011 / Chainsaw excessive compression #1 . Final step: removing the old spark plug and installing the new one. Being new carb, wasn't looking that direction educate a non mechanic. JavaScript is disabled. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. 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. I was given (estate) a small McCulloch chain saw and it started and ran great. Check if the wires are damaged or broken and replace them if necessary. Most of the time, the chainsaw cord became hard to pull because of the Starter Housing. I have plenty of engines with REALLY low compression that I'll be glad to swap him. Turn the engine to get under the piston and blow the crankcase out. On a 2 stroke the water would go into the crank case first and pool up. Lift the bars nose and tighten the nuts on the sidebar to secure the sidebar and guide bar in place. Fuel filters trap dirt and contaminants from the fuel to prevent them from damaging 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! If you buy another battery, make sure it has the same voltage and amperage as the old battery. 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. Uninstall the spark arrestor and unblock it using a brush, but you can also replace it for efficiency. Neighbor brought me his Stihl MS250 complaining that it tries to pull his arm from socket when starting. Sounds flooded, or maybe wrong sparkplug? You can use a ratchet to do the task. 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. Fine adjust everything and both saws start Normal now. That is what was told to me by the area distributor technician That is the nature of a 250. When your Stihl chainsaw doesnt start after changing the spark plug and fuel, some common problems to look for can help diagnose the source of the issue. Check the choke of the chainsaws engine and make sure it is completely closed. 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. Soaking in water will do nothing but rust things up . "author": { The carburetor sucks fuel from the tank, mixes it with the right amount of air, and pushes the mixture into the combustion chamber. If so, show him how to start it on the ground with his foot in it or with the rear handle between his thighs. However, you still have to confirm the size of the gap before installing. Fine adjust everything and both saws start Normal now. What worked with my MS440 kicking problem should also work with that one. You never try to get it to run with the choke on. Any ideas? The saw is about 2 years old, light use. 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. Pour starting fluid into the carburetor and crank the engine several times. Posted December 27, 2017. How Many Amps Does a Garage Door Opener Use? The extra effort to pull the saw is probably due to carbon build up on the piston crown and combustion chamber. 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.. 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. i have a ms 250. Thanks! It is a prevalent issue and can be fixed and detected easily without consulting a mechanic. It is harmful to your machine to use old fuel. Would not be afraid to do it to a 4, 6, or V-8. Save my name, email, and website in this browser for the next time I comment. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Register today and take advantage of membership benefits. Stihl oil has been used. Once it's removed, you can place a gauge on the place of the spark plug. Turn the engine to get under the piston and blow the crankcase out. 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. 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. High compression in chainsaws is a dangerous problem that can lead to serious injuries. Here is a link for two stroke engine air cycle. For a better experience, please enable JavaScript in your browser before proceeding. Are you sure the starter rope isn't a little too short? It would give you rusted bearings. Does the saw have a compression release? A 250 has a fair amount of compression for a smaller saw but not that bad. Check the electrode gap of the spark plug and ensure it is 0.02 inches. This is bad practice, and can damage your chainsaw. 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. This may sometimes jam your chainsaws rings, causing it to become inoperable. You are misunderstanding WHY water is put into carboned up engines. "logo": { stihl ms290 farm boss; By Ron Cook December 27, 2017 in General Chat. If the chainsaw is too much compression, it may be difficult to start. Use a screw wrench to loosen the nuts on the guide bar side panel to give you room to adjust the chain. Not sure it would accomplish anything on a 2-stroke chain saw engine. I'll even do the labor for free. The vibration of the tool during use can run some fasteners loose, preventing it from starting again. Make sure it's greased and the bushings are good. Find the low speed, high speed, and idle speed screws near the carburetor, start the engine and allow it to warm up. Hello D beatty, Here is a link for two stroke engine air cycle, Guido. Block the spark plugs hole by putting a nylon rope to prevent the piston from moving. Dont substitute it with. This is because your oil is not rated to get to work at a low temperature. Little two stroke motors as on chainsaws have to have a lot of compression to make the needed power. That model is extremely easy to flood. It prevents the carburetor from allowing too much fuel into the combustion chamber. In most cases, a buildup of carbon under the rings presses the rings against the cylinder, culminating in compression of the cylinder. Below we have discussed the most common reasons why your chainsaw wont idle and the best way to fix it. Normally it's not a problem but if it was already difficult to pull it could be. Soaking in water will do nothing but rust things up . 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 spark plug is located in the engine and ignites the fuel and air mixture, driving the piston and running the engine. Low pressure, 20 to 30 pounds is all you need. When this pressure, or compression, is too low or high, the chainsaw . A clogged carburetor wont allow fuel into the engine, preventing it from starting. What are the numbers on your sparkplug? 3 9 9 comments Best Add a Comment Revolutionary-Act469 2 yr. ago Doesn't pull at all or just hard to pull. A two-stroke gas-powered chainsaw uses relatively few moving parts. Change in temperatures and dirt will cause clogging anywhere the oil passes, and this can prevent the oil from spread all across the bar. More information can be found on this page. If it does maybe it is plugged. A large engine has a huge capacity in its motor. Other than that, you should also use the correct spark plugs for your chainsaw. Not sure it would accomplish anything on a 2-stroke chain saw engine. Any ideas? None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. If the compression is not produced in the engine at an appropriate level, it will not be able to convert fuel into energy. Check the spark plug of the chain saw if the engine is not starting at all. The Stihl chainsaw uses a four-position lever ignition system called the master control lever. Every time you fuel the chainsaw, you should make sure to drain the old fuel first to avoid contaminating the new fuel. 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. When the oil pimp or oiler is faulty, it will reduce the chainsaws performance and power. Reassemble the chainsaw, refill the fuel tank, crank the engine and check for oil along the bar. SPONSORED. If it does maybe it is plugged. I would suspect the timing is too early. Make sure it's greased and the bushings are good. 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. Over time, soot from the engine clogs up the spark arrestor causing the chainsaw to stall. It is thus highly recommended that you drain the fuel from your chainsaw if it still has any old gasoline left in it. So be sure to keep your chainsaw properly maintained and avoid compression problems. I have a MS250 that has come up on compression since new. 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. everything is harder in a tree, not a conclusive test. Just wondering what your opinions are of the lowest compression you can run a Stihl MS250 at. Remove ignition coil and muffler. After that, using a ratchet, remove the spark plug from the engine. 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. As stated it is with a hot engine so the water turns into steam in the cylinder and helps bust up the carbon. Get it ported and it brings it to another level. . Press question mark to learn the rest of the keyboard shortcuts. Yes I tried that last time and it did help some. Take off the side cover, bar and chain and see if there is any play in the clutch side of the crank. There might be a small stone or thing that is stuck inside the starter and causes the rope not to retract. Wipe off the excess fuel from the spark plug with a clean rag. Is the spark plug the correct one for the saw? By checking & repairing/replacing these, you can fix the issue. Also check the air filters and make sure they are clean. Quoting Removed, click Modern View to see What?? 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. Ok folks, I'm stumped. 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. On a 2 stroke the water would go into the crank case first and pool up. As stated it is with a hot engine so the water turns into steam in the cylinder and helps bust up the carbon. 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. Poke the oil feed hole with a 16-gauge wire to unclog it until it slides through the hole smoothly. Loosen the nuts holding the clutch cover and disconnect the chain shroud and remove the oil plate. The owner is complaining of hard to pull start. "url": "https://www.yesterdaystractors.com/graphics/smllogo.png", 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. Your email address will not be published. Hello D beatty, Here is a link for two stroke engine air cycle, Guido. Step 1: Prepare the chainsaw Remove the spark plug from the chainsaw. 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. Turn the brake off. Stihl recommends using 89 octane gasoline without ethanol, and the gas should not contain more than 10% ethanol. Locate the spark plug from the top of the engine underneath the chain brake handle. If it looks physically fine after cleaning it and you havent changed it in a few seasons, you should still replace it. When starting, slowly pull the rope to where it pulls hard before starting your actual starting pull. "@type": "Organization", 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. My one and only MS250 was a kicker to start it but that was the only problem. Welcome! Afterward, the beginning rope is pulled repeatedly until the gauge comes to a full stop on its own. When the engine starts running, turn the choke off. Insert the air filter and the spark plug, reconnect the spark plug wire, and close the opening. Now, the gauge might come in a number of size variations, so you need to use an adapter to make a perfect seal between the gauge and the chainsaw. As stated it is with a hot engine so the water turns into steam in the cylinder and helps bust up the carbon. If you do not replace the starter spring on time, it will cause you to replace the whole starter assembly. The spark arrestor in a chainsaw traps exhaust products emitted from an internal combustion engine. Replace with a new starter house Problem 2: Damaged pulley system Solution: 1. Hello. 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. Unscrew the spark plug wrench using a spark plug from the engine. 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. Choke cannot be used even when engine cold, or flooding occurs. I'm also going to double check it has the correct resistor type spark plug. The second thing, Read More Stihl Chainsaw Charger Not WorkingContinue, Your email address will not be published. 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. Repair or replace the damaged part 2. You can check the compression by pulling the spark plug out and holding it in your hand. Sometimes the spring stops working correctly due to overuse and becomes brittle. Manual for my Stihl saws and leaf blower says to scrape carbon out of the exhaust port. Now it has sat since the last use and I went to start it and it turned over maybe three times and the compression . ", First thing I'd check is the pull start assy. Cylinder Compression Plug Applicable Model For STIHL 021, 023, 024, 025, 026, 044, 046, 066, MS210, MS230, MS240, MS250, MS260, MS341, MS360, MS440, MS460, MS650, MS660 Chainsaw Parts Refer To Part No. Winterizing a pool is an important step in maintaining the longevity and health of your pool. 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!!! The compression limit should also be doubled if the engine capacity is 100 CC. It was metering lever. Of all the Stihl saws, the MS250 is the toughest to start in relation to it's size. Are you sure the starter rope isn't a little too short? Make sure the gap is according to the specifications of your chainsaws engine. First, remove the spark plug from the chainsaw. It was easier to pull after I cleaned it up, but still tough. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. "@id": "https://www.yesterdaystractors.com/" 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. Hope this helps. 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. Can anyone make a suggestion. Over time or when using the wrong fuel, the fuel filter becomes too clogged and restricts fuel flow, killing the engine shortly after starting. link to Winterize Your Pool Like a Pro: A Comprehensive Guide for Home owners. 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. } read more Vince O. or very unlikely but happened to me on an 041 make sure the crank hasn't shifted and started to bind. It may not display this or other websites correctly. If you regularly use the chainsaw, then there might be the possibility that your starter spring breaks off. Mar 22, 2017. Hold the tip of the blade and adjust the tension of the chain correctly. }, Tighten the tension screw with a screwdriver to tighten the chain around the bar. You need to pull the exhaust to check that. Insufficient fuel in the system may result in excessive compression. It can be from something as simple as starting the chainsaw wrongly to more severe issues like a damaged carburetor. I went with a meteor piston/cylinder set. I pulled them over with plug out ,They seemed to pull normal and believe they were fuel locked. Would have to remove spark plug and rinse cylinder with gas to be able to start. Make sure the crank taper is clean and the flywheel taper also. Also take the spark plug out and do the same. 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. If it is hard to pull, then check how the spring is performing. We describe all the possible issues and also suggest the solutions to fix them too. Press question mark to learn the rest of the keyboard shortcuts. You will notice the compression less. Would not be afraid to do it to a 4, 6, or V-8. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Start new topic; Recommended Posts. The saw runs and starts great. So, in our suggestion, one of the first things to check while feeling high compression is the starter spring. The saw runs and starts great. 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. Quoting Removed, click Modern View to see That would be quite the trick to get the oil to separate out of the gas, LOL. Carboned rings will decrease not increase compression. 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. Chainsaw Parts. All it needs is a few inches missing and it will pull too hard like the compression is too high. Activate the chain brake and then place the chainsaw on a flat, leveled surface. I would suspect the timing is too early. It will be apparent if it is, but usually a scored saw won't run good, if at all. Maybe take the plug out & pull the cord several times to blow out any excess fuel, then see how it pulls. I got it started. 24" is what I've got on mine, but it can handle a bigger bar. I'm hearing thats just the nature of the beast. Thanks. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Detailed, well-researched, and accurate home and garden information presented in an understandable format is our primary goal. 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.
Allgemein
Posted in
