When the oil pimp or oiler is faulty, it will reduce the chainsaws performance and power. 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. JavaScript is disabled. Any ideas? "logo": { 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. If a chainsaw has a 2 stroke engine, then the maximum compression it requires is 110-130 PSI. I hook up a drill to the nut on the clutch and start hard starting saws that way . JavaScript is disabled. Sparkplug was correct but I think it was a little flooded. Stihl 064 | Outdoor Power Equipment Forum Sounds like it was broken in "right", show the guy how to start it and tell him to be happy. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . 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 too damaged, you should replace it. "userInteractionCount": 23 A drastic and frankly silly thing to do though . The carburetor is a significant part of the chainsaw. "name": "Yesterday's Tractor Co.", Thank you for the responses. You can clean and mildly clogged carburetor but if it is too severe, replace it with one compatible with your chainsaw model. Disconnect the spark plug from the engine and inspect if it is damaged, eroded, or dirty. External air goes into the engine through the air filter to cool down the chainsaw engine and also mix with the fuel to ignite and run the saw. 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. I bought 2 032 Stihl saws at auction that pulled very hard. It's also possible the piston or cylinder are scored or carboned up. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Little two stroke motors as on chainsaws have to have a lot of compression to make the needed power. If the spark plug is too corroded or the electrode is faulty, it cannot create an electrical current to start the system. Carboned rings will decrease not increase compression. If your chainsaw doesnt automatically turn it off or you forget, the engine cuts off immediately. If the rails are shallow, you need to replace them. $49.99. Remove the spark plugs and the e-clips attached to the sprocket on the engine shaft. Little two stroke motors as on chainsaws have to have a lot of compression to make the needed power. Why Does My Chainsaw Have Too Much Compression? If the chainsaw still wont start, it is defective and requires a replacement. The plug should be tight against your thumb. To fix this problem, turn off the chain saw and let it sit for about 30 minutes to allow the excess gas to evaporate. 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. When people did it years ago it was with 4 stroke engines where the water is flowing straight into the cylinder. I have a MS250 that has come up on compression since new. Problem starting Stihl 032AV chainsaw - Houzz An engine is fit on the rear side of a chainsaw. 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. I hook up a drill to the nut on the clutch and start hard starting saws that way . Low pressure, 20 to 30 pounds is all you need. Even though it was purchased "brand new" I'm not so sure. When it comes to compression values, those between 90 and 110 psi are deemed to be acceptable. We have explained the most effective way to unflood a chainsaw engine below. So, If you feel too much compression while pulling a chainsaw, the possible reasons might be as below. Lift the bars nose and tighten the nuts on the sidebar to secure the sidebar and guide bar in place. The Stihl chainsaw uses a four-position lever ignition system called the master control lever. I think that's what I'd do. If you introduce an extremely fine trickle of water into a running engine through the carburettor that may remove some carbon . It is a prevalent issue and can be fixed and detected easily without consulting a mechanic. Carboned rings will decrease not increase compression. Fine adjust everything and both saws start Normal now. Recognised as a leading saw in the forestry industry, it is available in guide bar lengths 13"/32cm to 18"/45cm. 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! A two-stroke gas-powered chainsaw uses relatively few moving parts. Make sure you have a replacement spark plug on hand in case the problem recurs in the future. Oct 7, 2019 / Minimum compression for a Stihl 2 cycle #3 the actual numbers will vary from one tool to another Getting accurate numbers without special tools is quite difficult because of the small volumes. Stihl chainsaw compression test | Bob Is The Oil Guy 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. "headline":"Chainsaw has too much compression", There are sprays (power tune) for removing carbon, but I doubt if that's your problem. Best Professional Chainsaw Reviews 2022 - Pro Tool Reviews Use a can of carb cleaner sprayed into the breather/filter assembly. The compression limit should also be doubled if the engine capacity is 100 CC. Yes I tried that last time and it did help some. 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;ve read somewhere to put water? I got it going. Stihl MS192T Chainsaw Fuel Oil Tank Engine Housing Assembly OEM. Locate the spark plug from the top of the engine underneath the chain brake handle. Over time or when using the wrong fuel, the fuel filter becomes too clogged and restricts fuel flow, killing the engine shortly after starting. Once it's removed, you can place a gauge on the place of the spark plug. Press question mark to learn the rest of the keyboard shortcuts. When people did it years ago it was with 4 stroke engines where the water is flowing straight into the cylinder. Manual for my Stihl saws and leaf blower says to scrape carbon out of the exhaust port. If you suspect a compression issue, seek professional help as compression repairs can be complicated. 4 Possible Problems & Solutions Problem 1: Damaged starter housing Solution: 1. 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. how much compression should a Stihl 044 have? - TractorByNet How Much Compression Should A Chainsaw Have? - Kyle's Garage 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. Then Google decarb . It has barley been used, no carbon in muffler, still happens with muffler off, does not happen with sparkplug out. Being new carb, wasn't looking that direction educate a non mechanic. An excessive amount of compression in your chainsaws starting rope could also be indicated by the beginning rope failing to draw. 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. 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 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. No compression when pulling start rope. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Don't know what to do at this point. I've seen it happen a couple times. Unscrew the clutch assembly on top of the oil pump. Has someone invented a new kind of two stroke motor? We describe all the possible issues and also suggest the solutions to fix them too. When the air that reaches the chain saw's engine is insufficient, it becomes prone to overheating. With the choke engaged, pull the starting rope several times again, and the chain saw should start on the third pull. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. The following have been addressed. If there is any damage to the pulley at any stage, it will cause High Compression or stiffness during a pull.. You can unclog the carburetor if the clog is minor. If oil is in there it is what makes the engine feel like it is almost locked up. As stated it is with a hot engine so the water turns into steam in the cylinder and helps bust up the carbon. Stihl Chainsaw running too fast - HomeOwnersHub 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. #3. water will not dissolve carbon; it is far too hard to be effected. 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. A drastic and frankly silly thing to do though . All it needs is a few inches missing and it will pull too hard like the compression is too high. 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. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Most fuels nowadays are a blend of ethanol which attracts moisture and speeds up the rotting process. Not sure it would accomplish anything on a 2-stroke chain saw engine. Stihl 026 Chainsaw hard to crank - retrofit compression relief valve Try it, it may just do the trick! I;ve read somewhere to put water? of compression. A heavy-duty engine gets hot faster and works better than a cold engine. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Poke the oil feed hole with a 16-gauge wire to unclog it until it slides through the hole smoothly. I'm hearing thats just the nature of the beast. It had a compression release, and it started and ran well. Guido Quoting Removed, click Modern View to see What?? read more Vince O. That is a high compression saw, pull the rope slowly until you feel resistance then give it a short quick pull. The early 064, 044, 066 came with a red master control. 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. The chain oil will keep the chain lubricated, keep off dirt and allow smooth movement. People sometimes try to cut down a tree that is too big for their chainsaw. Would not be afraid to do it to a 4, 6, or V-8. Soaking in water will do nothing but rust things up . The saw runs and starts great. Back to top derwen1959 Long Time User In other words, the problem is in the trigger itself, not a. carb adjustment screw. If it is flooded that should clear it up. The first step is to remove the cover that covers the spark plug on your chainsaw. 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. Replace the fuel filters instead of cleaning them as they are pretty affordable and easy to install too. 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. It would give you rusted bearings. Stihl 251 chainsaw. If the compression is too high or too low, the engine wont start. We got rid of both of those useless things . Low pressure, 20 to 30 pounds is all you need. or Best . Looks like a saw without base gasket, and too little squish my 250 did the same thing,had to start it with no choke.Take the plug out,crank it the motor and see how much gas spews from the cylinder.Mine would blow out way to much.I had to adjust the metering lever in the carb,no problems after that. I've seen a 20psi drop with the wrong type of gauge to be pretty common. High compression in chainsaws is a dangerous problem that can lead to serious injuries. If the coil is faulty, there will be no spark to start the engine and run the chainsaw. 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. Please use the navigational links to explore our website. Does the saw have a compression release? Starter fluids spray can help in those conditions Before pulling shoulder. Admitted Woodaholic. If you suspect a compression issue, seek professional help as compression repairs can be complicated. Minimum compression for a Stihl 2 cycle | Lawn Mower Forum That is what was told to me by the area distributor technician That is the nature of a 250. Cleaned it all up, and had it tuned up. NelsGarage will share the knowledge Ive gathered about different tools and give you tips to accomplish your DIY projects faster. If your saw doesn't have a compression release since like you say its not a pro, then the two things I would check is either the go through recoil assembley with a fine tooth comb. 3Pcs/lot Cylinder Compression Plug For STIHL 044 046 066 MS440 MS460 Hello D beatty, Here is a link for two stroke engine air cycle, Guido. When the motor warms up after about a minute, turn on the choke position. #1. Mar 24, 2019. Winterize Your Pool Like a Pro: A Comprehensive Guide for Home owners. 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! However, you still have to confirm the size of the gap before installing. "@type": "InteractionCounter", A clear sign that you may have a chainsaw engine is when you smell gas while starting it. Are you sure the starter rope isn't a little too short? Generally the minimum is 110 lbs. Use an adjustable wrench to loosen the two nuts on both sides of the chainsaw. Generally covering everything under 25 HP. In a similar vein, if the wrong kind of oil is used, the compression may be increased. To test the recoil starter, remove it and reposition the spring. Chainsaw compression too much. Won't start. - YouTube Also check the air filters and make sure they are clean. It very often kicks back and pulls the starter rope back in. If oil is in there it is what makes the engine feel like it is almost locked up. Stihl 024 - Sherlock Holmes issue - help needed here. It has barley been used, no carbon in muffler, still happens with muffler off, does not happen with sparkplug out. Are you sure the starter rope isn't a little too short? A 50CC engine needs 150 PSI compression. Remove the air filter cover and then slide off the rubber spark plug connector from the spark plug. 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! I hook up a drill to the nut on the clutch and start hard starting saws that way . Move the selector lever up one position immediately or the saw will flood on the very next pull. I bought 2 032 Stihl saws at auction that pulled very hard. "image": { It will be apparent if it is, but usually a scored saw won't run good, if at all. Hello D beatty, Here is a link for two stroke engine air cycle, Guido. Ensure the chain fits snugly inside of the bar and the teeth that keep it in place are not worn down too low. What is the minimum compression for my STIHL chainsaw? How big a fella are ya? Chainsaws are very powerful tools, and if theyre not properly maintained, they can easily overcompress the chain, which can cause it to break. Now it has sat since the last use and I went to start it and it turned over maybe three times and the compression . Compression gauges are not always accurate and different engines will provide different results. . 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. I used to have a Homelite that would do that if I left gas in it. $20.00 shipping. Maybe take the plug out & pull the cord several times to blow out any excess fuel, then see how it pulls. This may sometimes jam your chainsaws rings, causing it to become inoperable. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Posted December 27, 2017. Garden Guides | Compression Tricks for Chainsaws or very unlikely but happened to me on an 041 make sure the crank hasn't shifted and started to bind. Consequently, operating this chainsaw becomes a really difficult chore to do. If any of these components are worn or broken, the chain saw wont start even with fuel. I've been working on a Stihl 026 chainsaw that John found, and it is very hard to crank. Sometimes it kicks and the rope pulls right out of my hand. If it does maybe it is plugged. But it was stolen along with other tools around 1990. Uninstall the spark arrestor and unblock it using a brush, but you can also replace it for efficiency. I used to have a Homelite that would do that if I left gas in it. Unscrew the spark plug using a ratchet and screw the compression gauge in its place. 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. Move the selector lever up one position immediately or the saw will flood on the very next pull. When people did it years ago it was with 4 stroke engines where the water is flowing straight into the cylinder. 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. Turn the idle speed clockwise until the saw idles and chain turns, and then make a one-fourth counterclockwise turn. 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. no, afraid I don't have equipment to test. Has anyone ever seen a stock MS250 or any stock stihl with 190psi of compression? If the chainsaw is too little compression, it may start easily but will not run smoothly. You are misunderstanding WHY water is put into carboned up engines. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. 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. Make sure the crank taper is clean and the flywheel taper also. Without proper compression, the engine will not be able to suck and use the fuel for combustion. The carburetors work in a chainsaw engine allows the right amount of fuel and air mixture into the combustion chamber. My name is Chris Ross. Here is a link for two stroke engine air cycle. "@id":"https://www.yesterdaystractors.com/cgi-bin/viewit.cgi?bd=toolt&th=435118", Can also be used with hedge trimmer attachment HS 246. Final step: removing the old spark plug and installing the new one. When starting, slowly pull the rope to where it pulls hard before starting your actual starting pull. 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! If it is not physically damaged, clean it with clean gasoline and a rag. Unscrew the spark plug wrench using a spark plug from the engine. Take off the muffler or the carb to get access. 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. "@type": "WebPage", The flywheel is loose? It is significantly tougher to pull over than an 024 or the new 241. water will not dissolve carbon; it is far too hard to be effected.