Ensure the chain fits snugly inside of the bar and the teeth that keep it in place are not worn down too low. Would not be afraid to do it to a 4, 6, or V-8. When the motor warms up after about a minute, turn on the choke position. I got it going. 1. saw has new carb 2. flywheel has been removed and key inspected. Block the spark plugs hole by putting a nylon rope to prevent the piston from moving. The consent submitted will only be used for data processing originating from this website. "height": 57 Don't put water into the 2 stroke. Gas with ethanol also burns hotter than gasoline which can cause the engine to overheat and burn the plug electrodes. I just picked up a well used 025 that runs like a champ and has quite a bit of compression, I have not put a gauge on it but it will pull the starting handle out of my hands if I'm not paying attention. Press question mark to learn the rest of the keyboard shortcuts. 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. 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. Although this is often true, it is not always the case. "@type": "InteractionCounter", I think that's what I'd do. Subsequent starts are just as hard. A chainsaw Battery blinking red is one of the most frustrating things a woodcutter can, Read More How To Fix Chainsaw Battery Charger Blinking Red?Continue, The standard compression reading required for most 2-cycle chainsaw is around 100-110 psi to start. 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. When this comes to a stop, it will come to a complete stop at a certain number, which is the compression of your chainsaw blade. I tried draining the crankcase with the saw upside . Check the choke of the chainsaws engine and make sure it is completely closed. 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. Would not be afraid to do it to a 4, 6, or V-8. Over time, soot from the engine clogs up the spark arrestor causing the chainsaw to stall. That is what was told to me by the area distributor technician Check for side play in the crankshaft. 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! Not sure it would accomplish anything on a 2-stroke chain saw engine. You can check the compression by pulling the spark plug out and holding it in your hand. If oil is in there it is what makes the engine feel like it is almost locked up. If the spark plug is too corroded or the electrode is faulty, it cannot create an electrical current to start the system. anthonyg_ma Original Author 16 years ago Canguy, thnks for the tips! The compression limit should also be doubled if the engine capacity is 100 CC. If the coil is faulty, there will be no spark to start the engine and run the chainsaw. The other reason might be the use of the wrong type of oil for the climate. Start new topic; Recommended Posts. Manual for my Stihl saws and leaf blower says to scrape carbon out of the exhaust port. Youll need to clean the cylinder and piston to fix this thoroughly. I missed the "no carbon". The ignition coil transmits electricity to the spark plug to create a spark that ignites the engine. My name is Chris Ross. Too much hot or cold engine does not work or even start to produce vacuum pressure inside engine. Mar 24, 2019. "height": 57 But it was stolen along with other tools around 1990. An excessive amount of compression in your chainsaws starting rope could also be indicated by the beginning rope failing to draw. Do that to the starter side when you're looking at the starter assy. Usually, this happens when you use a chainsaw after a very long time or by wear and tear of the rope. Once the 250 is running, its fine. You can prevent the new starter rope from fraying by burning the two ends of the rope. We're all about fixing small engines, from carburetor rebuilds, to crankshaft machining. 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. Then Google "decarb". We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Therefore, it does not need any compression rate to start. 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. Chainsaws are very powerful tools, and if theyre not properly maintained, they can easily overcompress the chain, which can cause it to break. The switch might be damaged or the motor is burned out. Thanks. However, if I push downward on the trigger button, it slows down to. It is harmful to your machine to use old fuel. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Carboned rings will decrease not increase compression. let it idle over lunch, just made sure to not go too long between filling it with gas, while running of course. The flywheel is loose? The first step is to remove the cover that covers the spark plug on your chainsaw. 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?? Stihl MS 250 Chain Saw: The pull start will barely move the flywheel. My husky 266xp has been that away from newjust pull over slow for 2 or 3 times and then try cranking.. You are misunderstanding WHY water is put into carboned up engines. When this pressure, or compression, is too low or high, the chainsaw . It takes a Bosch WSR6F or NGK BPMR7A. "interactionType": "https://schema.org/CommentAction", Make sure the gap is according to the specifications of your chainsaws engine. It is best to put a new plug in after clearing. You will notice the compression less. 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. He checked.it clearly says that in the OP. Check for broken teeth on the chain and replace them if necessary. That is what was told to me by the area distributor technician. It is like there is too much compression. A hot engine also requires more compression to convert furl into energy as compared to the colder one. Use of this Web site constitutes acceptance of our. Back to top derwen1959 Long Time User You can unclog the carburetor if the clog is minor. It's an older saw I bought at a garage sale. The chainsaw motor engine capacity can range from 30CC and 50CC to 150 CC. $49.99. I would suspect the timing is too early. If anything prevents the right amount of fuel into the combustion chamber, the chainsaw wont start. As long as I can get it going.. It was metering lever. The chain oil will keep the chain lubricated, keep off dirt and allow smooth movement. When people did it years ago it was with 4 stroke engines where the water is flowing straight into the cylinder. Don't put water into the 2 stroke. Would have to remove spark plug and rinse cylinder with gas to be able to start. runs way too fast. 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 use a ratchet to do the task. I went with a meteor piston/cylinder set. It is usual for the chainsaw chains to come off with continued use, but there is usually an underlying cause when its too repetitive. Get you some Sea Foam at the local auto parts store. I bought 2 032 Stihl saws at auction that pulled very hard. 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 The chainsaw motor engine capacity can range from 30CC and 50CC to 150 CC. #1. Compression is measured by using a simple screw-in gauge. Maybe take the plug out & pull the cord several times to blow out any excess fuel, then see how it pulls. I used to have a Homelite that would do that if I left gas in it. I thought all the fuel was out but there was some in the line yet. Cleaned air filters and both were very dirty. If a chainsaw has a 2 stroke engine, then the maximum compression it requires is 110-130 PSI. You should also make sure the new gas you use is appropriate for the chainsaw. 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. Try it, it may just do the trick! 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 has barley been used, no carbon in muffler, still happens with muffler off, does not happen with sparkplug out. Some of the contributing reasons include a full tank of oil, carbon buildup on the exhaust system, and malfunctioning spark plugs. My /Sthil 034 is very difficult to start. no, afraid I don't have equipment to test. Could be the main bearings are loose, look for evidence of the coil rubbing the flywheel. A clear sign that you may have a chainsaw engine is when you smell gas while starting it. Several reasons can cause your Stihl chainsaw to bog down when your pull the trigger. }, If the chainsaw still wont start, it is defective and requires a replacement. This Indoor Fly Traps: 5 Things You Didn't Know About Indoor Fly Traps. Recognised as a leading saw in the forestry industry, it is available in guide bar lengths 13"/32cm to 18"/45cm. $99.95. It would give you rusted bearings. A smaller gap will cause a weak spark and poor ignition of the engine, while a wider gap will not bring out any spark. The end of the tester must protrude exact the same volume into the cylinder as the spark plug or the reading will be wrong. Try taking it out, Then holding the trigger while you pull fast. There are sprays (power tune) for removing carbon, but I doubt if that's your problem. My question is what is causing the trigger to not slow down. I;ve read somewhere to put water? Every chainsaw needs to have some compression to ensure that it operates well. If your chainsaw doesnt automatically turn it off or you forget, the engine cuts off immediately.