"height": 57 Please use the navigational links to explore our website. We and our partners use cookies to Store and/or access information on a device. Get it ported and it brings it to another level. in the, All Rights Reserved. If it is not physically damaged, clean it with clean gasoline and a rag. Try it, it may just do the trick! As far as compression, you can usually tell by how the saw pulls when starting it. "image": { Stihl MS 250 Chain Saw: The pull start will barely move the flywheel. I bought 2 032 Stihl saws at auction that pulled very hard. It runs good after I get it started. If this does not fix the issue, it may be necessary to replace the whole starting rope system with another one. You can unclog the carburetor if the clog is minor. If any of these components are worn or broken, the chain saw wont start even with fuel. No compression when pulling start rope. To fix this problem, turn off the chain saw and let it sit for about 30 minutes to allow the excess gas to evaporate. 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. Turn off the choke by pressing the control lever to activate the fast idle. If your chainsaws cylinder and piston have a lot of carbon build-up, it can cause the chainsaw to have high compression. The plug should be tight against your thumb. 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. The spark plug is located in the engine and ignites the fuel and air mixture, driving the piston and running the engine. Wipe off any flammable fluid from the metal surface of the engine with a clean rag. 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. "@type": "Organization", 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. You have an option to either pull off the starter and clean it or look for an ideal replacement for your starter house. 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 I;ve read somewhere to put water? Carbon buildup is yet another important factor in the increasing compression experienced by chain saws over time. 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. When there is too much fuel, it will not ignite, and the engine wont start. 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. Likewise, low compression in the engine will be slow and retarding and it is a warning sign of leakage in your engine. Would have to remove spark plug and rinse cylinder with gas to be able to start. Any help out thereEGBinOR Get you some Sea Foam at the local auto parts store. For a better experience, please enable JavaScript in your browser before proceeding. As long as I can get it going.. Below are the reasons the chain keeps coming loose and how to fix it. As stated it is with a hot engine so the water turns into steam in the cylinder and helps bust up the carbon. The lack of oil dries the chainsaw assembly, which causes high compression and becomes very difficult for you to handle the chainsaw. Locate the spark plug from the top of the engine underneath the chain brake handle. 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. Now it has sat since the last use and I went to start it and it turned over maybe three times and the compression . By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. water will not dissolve carbon; it is far too hard to be effected. I get it going now and its easier but its still a bear. 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?? 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. or Best . STIHL Chainsaws FAQs | STIHL Product FAQs | STIHL USA Choke cannot be used even when engine cold, or flooding occurs. Ok folks, I'm stumped. The Stihl 066 chainsaw uses the same type of engine most gasoline-powered yard tools use, a two-cycle combustion engine. 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. My question is what is causing the trigger to not slow down. Being in the cutting services for more than 10 years, I know a thing or two about chainsaw. I'm an arborist by profession & a blogger by passion. Ensure the chain fits snugly inside of the bar and the teeth that keep it in place are not worn down too low. "name": "Egbinor" Help, can't pull start Stihl MS250 chainsaw, too much compression. Try blowing the crankcase out with air. "description":"Discussion of Chainsaw has too much compression in the Tool Talk forum followed by comments. 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. Several reasons can cause your Stihl chainsaw to bog down when your pull the trigger. By checking & repairing/replacing these, you can fix the issue. A chainsaw with no spark will shut down suddenly or not start at all. Runs well, except it. Has someone invented a new kind of two stroke motor? Youll need to clean the cylinder and piston to fix this thoroughly. Turn the engine to get under the piston and blow the crankcase out. If any part of a carburetor has issues, the right amount of fuel/air mixture wont pump into the chamber, therefore, preventing the engine from starting. Replaced the chain and did some serious cutting and was so pleased. 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. 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. 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.. Press question mark to learn the rest of the keyboard shortcuts. Try blowing the crankcase out with air. Its just that its nearly impossible to pull. A chainsaw is going to be exposed to oxidation over time, but you can at least limit the process by storing your chainsaw well. The Housing is the outer cover of the starter, and if it is damaged, your chainsaw suffers stiffness during a pull. To inspect the guide bar, disassemble the chain cover, chain and bar. To test the recoil starter, remove it and reposition the spring. 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. First thing I'd check is the pull start assy. Check for broken teeth on the chain and replace them if necessary. When people did it years ago it was with 4 stroke engines where the water is flowing straight into the cylinder. In other words, the problem is in the trigger itself, not a. carb adjustment screw. Stihl 024 - Sherlock Holmes issue - help needed here. If it looks physically fine after cleaning it and you havent changed it in a few seasons, you should still replace it. That is the nature of a 250. Stihl 026 Chainsaw hard to crank - retrofit compression relief valve Why Is My Chainsaw Hard to Pull? (5 Things to Check) Save my name, email, and website in this browser for the next time I comment. How Much Does it Cost to Install a Garage Door Opener? Unscrew the spark plug using a ratchet and screw the compression gauge in its place. The choke position is the fourth setting on the master control lever. Welcome! If the compression is not produced in the engine at an appropriate level, it will not be able to convert fuel into energy. You can also quickly fix this anomaly by ensuring a proper troubleshooting of the pulley compartment to find damages. anthonyg_ma Original Author 16 years ago Canguy, thnks for the tips! ProTip: You can use a small air compressor to blow air through the air filter and get rid of the loose dust before proceeding to clean it further. Your email address will not be published. It will be apparent if it is, but usually a scored saw won't run good, if at all. I tried draining the crankcase with the saw upside . A 250 is a joy to pull start Compared to my 200+ compression ported saws with no decomp. Hello D beatty, Here is a link for two stroke engine air cycle, Guido. A reddit for all operators of chainsaws to post experience with tools, pictures of their new saws and old workhorses and any maintenance tips. 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. My first chain saw was an old Homelite EZ with a blue metal case and a 20" bar. Ron Cook. Could your gauge be off a little? The engine creates a vacuum pressure inside it. You can check the compression by pulling the spark plug out and holding it in your hand. in the cylinder overnight because the rings are cerboned up? link to Winterize Your Pool Like a Pro: A Comprehensive Guide for Home owners. Let saw run until its warmed up, and go cut wood. The power of the motor of an engine is measured in its capacity. Turn the idle speed clockwise until the saw idles and chain turns, and then make a one-fourth counterclockwise turn. Could be the main bearings are loose, look for evidence of the coil rubbing the flywheel. Detailed, well-researched, and accurate home and garden information presented in an understandable format is our primary goal. 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. Dont substitute it with. Final step: removing the old spark plug and installing the new one. 4 Possible Problems & Solutions Problem 1: Damaged starter housing Solution: 1. If A two cycle engine gets flooded BADLY, oil can separate from the gas mix, accumulate in the crankcase and creates an hydrostatc lock. Take off the muffler or the carb to get access. 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. 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. Temperature Of The Engine A heavy-duty engine gets hot faster and works better than a cold engine. 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. Sounds like it was broken in "right", show the guy how to start it and tell him to be happy. ", } It is a prevalent issue and can be fixed and detected easily without consulting a mechanic.