Garden Guides | Compression Tricks for Chainsaws Once you identify the cause of high compression, you can repair that affected part or find a new replacement for it to make it work smoothly. On a 2 stroke the water would go into the crank case first and pool up. If A two cycle engine gets flooded BADLY, oil can separate from the gas mix, accumulate in the crankcase and creates an hydrostatc lock. 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. Also take the spark plug out and do the same. Take off the muffler or the carb to get access. 4 Possible Problems & Solutions Problem 1: Damaged starter housing Solution: 1. 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. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. Your email address will not be published. $20.00 shipping. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. "description":"Discussion of Chainsaw has too much compression in the Tool Talk forum followed by comments. A smaller gap will cause a weak spark and poor ignition of the engine, while a wider gap will not bring out any spark. Chainsaw Parts. Clean any mildly dirty parts and replace all the damaged parts. I hope my epic guides will help you to choose,buy and maintain chainsaw. Block the spark plugs hole by putting a nylon rope to prevent the piston from moving. Stihl 291 chainsaw too much compression Check the compression of the engine. Stihl Chainsaw Ms170 for sale | eBay I've seen it happen a couple times. Minimum compression for a Stihl 2 cycle | Lawn Mower Forum 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?? High effort to pull start my 2-stroke blowers | Lawn Mower Forum Runs well, except it. I get it going now and its easier but its still a bear. Turn the engine to get under the piston and blow the crankcase out. "width": 200, NelsGarage.com All Rights Reserved 2021 Theme: Prefer by, Stihl Chainsaw Troubleshooting & How-to Guide. I would suspect the timing is too early. When people did it years ago it was with 4 stroke engines where the water is flowing straight into the cylinder. It is possible however to flood a two stroke which can cause the plug to fowl. Make sure it's greased and the bushings are good. This is because your oil is not rated to get to work at a low temperature. What worked with my MS440 kicking problem should also work with that one. It was easier to pull after I cleaned it up, but still tough. Remove the spark plug with a spark plug wrench and clean it with a brush to remove carbon scoring and dirt. Obviously, the motor, which has a huge capacity, will require more compression. You are misunderstanding WHY water is put into carboned up engines. Youll need to clean the cylinder and piston to fix this thoroughly. 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! Doesnt pull at all or just hard to pull. Generally covering everything under 25 HP. 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. That is a high compression saw, pull the rope slowly until you feel resistance then give it a short quick pull. of compression. Confirm the spark plug gap, check and adjust with a feeler gauge or gaping tool. That is the nature of a 250. In other words, the problem is in the trigger itself, not a. carb adjustment screw. Why Is My Chainsaw Hard to Pull? (5 Things to Check) water will not dissolve carbon; it is far too hard to be effected. No carbon on top or on roof of cylinder. You can use a ratchet to do the task. }, By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. When this pressure, or compression, is too low or high, the chainsaw . My Chain Saw Is Smoking & Overheating | Hunker 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. Required fields are marked *. It is best to put a new plug in after clearing. Move the selector lever up one position immediately or the saw will flood on the very next pull. Finally the fuel will be converted into energy. 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 250 is a joy to pull start Compared to my 200+ compression ported saws with no decomp. You're familiar with how to start a stihl yes? what and or where is the metering lever.? 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. That is the nature of a 250. (there is some play when flywheel on shaft (nut not attached) 3. tank and oiler vents are operating 4. exhaust has been removed and spark arresting screen checked (clean) 5. piston/walls checked.. no scarring Little two stroke motors as on chainsaws have to have a lot of compression to make the needed power. Make sure it's greased and the bushings are good. If your chainsaw doesnt automatically turn it off or you forget, the engine cuts off immediately. Are you sure the starter rope isn't a little too short? Pull the starter rope until you hear the first sign of it firing with a small burp. Yes I tried that last time and it did help some. water will not dissolve carbon; it is far too hard to be effected. Other than that, you should also use the correct spark plugs for your chainsaw. Ron Cook. The choke position is the fourth setting on the master control lever. The plug should be tight against your thumb. Any help out thereEGBinOR Get you some Sea Foam at the local auto parts store. 3Pcs/lot Cylinder Compression Plug For STIHL 044 046 066 MS440 MS460 As the starter, spring plays a vital role in running starter assembly smoothly. Save my name, email, and website in this browser for the next time I comment. water will not dissolve carbon; it is far too hard to be effected. Remove the air filter, wash it with detergent and water and scrub off the dirt with a brush. Most times, when the Stihl chainsaw stops working, it is never a complete breakdown. Here is a link for two stroke engine air cycle. You can follow the steps on how to troubleshoot and revive it when it wont start. After that, using a ratchet, remove the spark plug from the engine. 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. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. Unscrew the spark plug wrench using a spark plug from the engine. How Much Compression Should A Chainsaw Have - Toolsadvisorpro If you regularly use the chainsaw, then there might be the possibility that your starter spring breaks off. If the reading is below or above the required range, then your ignition coil requires changing. Stihl chainsaw compression test | Bob Is The Oil Guy Disconnect the spark plug from the engine and inspect if it is damaged, eroded, or dirty. I would suspect the timing is too early. Stihl MS250 too much compression - Arborist, Chainsaw & Tree Work Forum I bought it used around 1978. I;ve read somewhere to put water? Make sure there is oil in the engine. You are using an out of date browser. 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. 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. Chainsaw "Hard To Pull" Issues: Check & Fix (Within 5 Min) 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. If it is the right sparkplug and not flooded, I would maybe buy a different saw with easy start. My question is what is causing the trigger to not slow down. It works when cold-starting the engine, when the engine is idle and when the engine is open. The vibration of the tool during use can run some fasteners loose, preventing it from starting again. As the chain moves over the bar, it spreads the oil across the moving parts to reduce friction and heat. I would suspect the timing is too early. So, If you feel too much compression while pulling a chainsaw, the possible reasons might be as below. Are you sure the starter rope isn't a little too short? 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. It will be apparent if it is, but usually a scored saw won't run good, if at all. Below are the reasons the chain keeps coming loose and how to fix it. If the chainsaw is too much compression, it may be difficult to start. I have a MS250 that has come up on compression since new. 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.



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