The metering diaphragm which is one with the metal plate on it has a gasket between it and the carb. Finally, to check for compression, remove the spark plug, press your thumb over the opening and pull the starter cord. Gas in tank no oil mix. I just recently rebuild the carburetor. Few things are more frustrating than having a big wood cutting job to do, and your chainsaw won't start. Sometimes, it's easier to replace the carburetor than to clean it and rebuild it. But if i put the plug back in it just won't fire. Depress the primer bulb four or five times to pull air out of the carburetor and fill it with fuel. the pump diaphragm which is the flat one with a couple of flaps on it goes directly to the carb. Is it possible for a cracked pipe to not be leaking. Get your answers by asking now. A clogged carburetor is one reason a chainsaw won't start. If there's no spark, take the chainsaw back to the dealer as the ignition module is faulty I filled the chamber will fuel again, as you last suggested but still won't start or even sound like it might? Join our email list for updates and offers. This repair guide takes you through the process. See our DIY chainsaw repair page for symptoms and step-by-step repair instructions. You will need a compression gauge for that. Checking for Spark. One of the greatest precious parts of the chainsaw to make it start is the ignition coil. This DIY repair guide shows how to replace chainsaw fuel lines in 30 minutes. Need help finding the right filter for your refrigerator? Before starting your chainsaw job, always make sure that there is enough fuel … Check your exhaust. Gas Check As obvious as it might seem, your chain saw will not start if no fuel is in the tank. Remove the spark plug from the cylinder and attach the spark plug wire to it. Check, clean and replace all the fuel system parts before moving into the internal engine, as gas problems create a majority of starting problems. A blue spark should be seen jumping across the plug. Use the kit to rebuild the carburetor after cleaning it. I replace starter coil, carb, and spark plug and no start. Does it start? If the engine won't start even though there's fuel in the chainsaw, the carburetor could be the problem. Stihl Chainsaw MS180C won't start. The spark in your chainsaw helps ignite the fuel inside the cylinder. If it's flooded make sure you pull the plug and turn it over a few times to dry it out! 1. Add fuel stabilizer to the gas when you refill the tank to help keep the fuel fresh. Chain saw won't start.has spark and gas. Keep track of the models you own in your profile. The motor has spark, compression and fuel, but will not start. Over time, some of the ingredients in the fuel will evaporate, leaving behind a thicker, stickier substance. Replace the fuel if it's old. You can sign in to vote the answer. SPARK: I tested spark with an inline spark tester and it confirmed that there is spark. If the rings are worn there may not be enough compression to start it. It's so basic, but it happens: make sure the On/Off switch is set to On when you start it. Why Doesn’t Your Chainsaw Start Even if It has Spark and Fuel? would check the diaphragms and gaskets and make sure you have them installed correctly. Not all chainsaws will have spark plugs however for petrol machines this can be one of the main causes of a non-starting machine. Recoil Starter. It's often more cost effective and practical to replace the carburetor rather than rebuild it. On compression the spark has a much harder time jumping the gap, since air is an insulator, and you won't have any spark at all. Brought to me with broken starter rope. As a result, killing any other injectors that also share that same driver circuit. Dirty or clogged fuel tanks, dirty fuel filters and lines, loose fuel hoses, dirty air filters and a dirty carburetor can all restrict fuel flow. If the fuel is fresh, check for and replace cracked fuel lines. It's very frustrating. Too much current flow to an injector may cause the PCM injector driver circuit to shut down. TIP: Try unplugging the injectors one at a time and cranking the engine to see if it will start. Mechanic's Assistant: Anything else we should know to help you best? How do you think about the answers? The electric spark occurs when an electric current jumps across the spark plug gap. If the plugs do not spark, they could have experienced corrosion. Is there compression? 1/8" isn't much, and if it won't jump any farther than that you have a weak mag. We’ll start with the most common problem by far when it comes to small engines not starting. I have a Poulan chainsaw and it is getting spark as I tested with my spark tester. Still have questions? These step-by-step repair guides will help you safely fix what’s broken on your chainsaw. To check for a spark. All Rights Reserved. Chainsaw Spark Plug. If the saw doesn't start after five pulls, set the choke … The Ignition Coil. If you have properly mixed the fuel and have tried lowering the carburetion setting, but your chainsaw still won't start, the spark plug is probably wet or faulty. Does it flood out or is it starved? Not only is this a good safety tip to ensure the chainsaw doesn’t spontaneously start, but it could also be a factor as to why the product will not power up. Make sure the screen isn't plugged. If you don't feel air pushing from the cylinder, it's likely that the piston rings need to be replaced. Is the carb starved? If the engine starts and then sputters, or doesn't start at all due to lack of fuel, you might need to replace carburetor. If you haven’t used your chainsaw for a while, the fuel may have gotten bad. Discover the value of being a card member. Replace a fuel line that's brittle or damaged. Use fresh fuel when operating a chain saw. However, with continuous use, the spark plug is prone to corrosion and can become worn down. It’s relatively easy to flood your engine. By Eric Blankenburg ... Clean the fuel tank with a brush and rag if the gas has gone bad, and pour in the freshly mixed fuel. Texas football player charged in attack on referee, Conway: It looks like Biden and Harris will prevail, White House signals no rush on coronavirus stimulus, Cyrus says marriage was 'last attempt to save' herself, Nashville ICU nurse shot dead in car while driving to work, NBA star chases off intruder in scary encounter. These tips may help you get your hard-to-start chainsaw running. Pull the cord with four or five short bursts, and when the engine turns over, immediately set the choke to the "HALF" position. Report: Ex-NBA star sued by weed consultant, SEC: Cheesecake Factory misled its investors, Jessica Simpson opens up about struggles with dyslexia, Pence tells Georgia voters election still undecided. If it still won't start, the problem could be the spark plug, fuel line or carburetor. dad says the problem is that it is a poulan try Husqvarnas. body. Good Luck! Follow these steps to do the job yourself in about half an hour. I have a 42 cc poulan that i just can't get to start. First, make sure there's fresh gas in the tank-old gas accumulates water and burns poorly. Can a glass shop replace the top on a glass cooktop or does one have to go to the manufacturer of the stove? © 2020 Transform SR Brands LLC. If your chainsaw struggles to start or won't start at all, the carburetor could be clogged or its gaskets could be worn. Poulan recommends a 40:1 gasoline-to-oil ratio for its two-cycle chain saw motors. It has brand new gas, i've removed the spark plug and it is sparking very well. Did you get a rebuild kit? ... the engine won’t turn over and the chainsaw won't start. This repair guide gives step-by-step instructions for rebuilding a chainsaw carburetor, which is a cost-effective alternative to replacing it. Find the perfect fit for your refrigerator. First, make sure there's fresh gas in the tank-old gas accumulates water and burns poorly. Locate the spark plug on your chainsaw and remove the cover. What happens? Fuel lines become brittle over time and can crack or tear. Next, disconnect the spark plug wire and remove the spark plug. If the fuel lines are okay, you may need to rebuild or replace the carburetor because a dirty carburetor won't supply the engine with fuel. Join Yahoo Answers and get 100 points today. Good spark, good fuel, 100lbs compression. If so, is the shut-off valve open and the fuel clean? I have an MTD Yard Machines 22" push mower with a B&S 500 series (10T502 0500 E1) 5.0hp motor.