If you have an absorptive muffler, you should replace it with a reflective muffler if possible. It has a blade at the bottom that rotates and cuts the grass. If its broken, you wont be able to start the mower no matter how hard you try. Worn or otherwise compromised drive belts are a common cause of noises when accelerating. The first thing to do is inspect your lawn mowers blades to see if theyre worn down or damaged in any way. You should also oil levels by providing continuous flow. Fortunately, these issues usually have simple fixes that can be completed with only basic tools. Turn the lawn mower right side up and clean the top of the deck to improve adhesion. Check the spark plug gap. If you hear or feel clicking then the connecting rod is able to give way. The build-up of grass and debris under the deck of the mower and on the blade can produce a loud clunking sound. You also need to check the corrosion of the metal part of that machine. Let the mower run for a few min. link to Natural Ways To Keep Mosquitoes From Biting. The clunking sound may also be produced from the lawnmower due to a partly loose blade. The solenoid connects the battery to the starter motor when the solenoid is energized. For a better experience, please enable JavaScript in your browser before proceeding. California Consumer Privacy Act | So now every time you start the engine their is a loud clanging noise and it goes way after the engine runs for maybe a second or two. Clogging up issues for blades or cutting deck. Why does my lawn mower make a popping noise when I start it? :angry: It isn't the crankshaft I believe because the mower doesn't have any excessive vibration. If your riding lawn mower engine clicks when you turn the key but won't turn over, there's a pretty good chance your mower could have a bad starter solenoid. This could be a sign that something is wrong with it, such as a broken or loose part. Low Oil Damaged Blade Broken Blade Adapter Damaged Belt Covers Once all the ground is removed, spray some silicon spray of a lubricant (like WD40) on the deck, preventing further soil accumulation under the deck. A lawnmower may knock under a specific load or other problem issues. The electric motor of that machine is less noisy than that deck. Lawn Mower Makes Loud Clicking Sound. Larger engine mufflers have a larger noise-reducing capability. - Quora Answer (1 of 9): Without having it here in front of me, I'd suspect a loose rod cap. Why is my lawn mower making a loud noise? If there are no visible signs of damage and your lawn mower starts up normally after troubleshooting, you may need new blades or gears in order for everything to work properly again. 304 North Cardinal St.Dorchester Center, MA 02124. Dryer Replacement Parts. The crankshaft is the part of the engine that rotates the mower blades. Or a power washer on its lowest setting. If you hear a knocking noise, the crankshaft is probably broken. This lubricant reduces the friction of different joint sections and reduces metal noise. Now you want to reduce that mower noise. The most common cause of engine knock is a spark plug that isnt firing cleanly. Now, I will discuss different sources of this machine noise and I will also suggest some notes that may help you to reduce noise. This can happen when the air filter is dirty. This causes "dry" operation, and the starter makes a loud noise when engaging. It is also a good idea to check if the blades are correctly balanced. After increasing the deck layer, you can reduce grass hitting noise. Sometimes, the muffler may stick into the outlet, so you need to use a wrench to take it out. The sound level depends on the type of parts and the quality of the mower. Just you need to give the push to operate this machine. This will reduce the amount of noise it makes. Troy-Bilt won't move. You should read that for quick learning. What causes a small engine to backfire when starting? 11 years ago. Here is how I can describe it: Metal to metal, like hammering a metal shaft. If there is low engine oil in the lawnmower, it may produce a knocking or clunking sound. When you start a lawn mower, the blade starts to spin. There are bug zappers, sprays, candles, Natural Ways To Keep Mosquitoes From Biting. If the filter is damaged, replace it. ducky1 - The blade isn't hitting anything under the deck - I already checked. Though all the mowers are not the same, some mowers make low noise. Another sign is if the engine is making unusual noises. If you can increase the layer of the mower deck, there will be low vibration in that deck. What to do? This pushing system is not hard work. Besides, when you power the mower (from the cordless battery or not), vibration may be created in it. The sooner you can fix your machine, the better. But you should do that and properly tighten them. When using a gas lawnmower, you become accustomed to the loud revving the engine makes. Not only are they spinning at such high RPMs all the time, but if they knock against anything besides grass (i.e., tree roots, rocks, etc. Continue with Recommended Cookies. What would cause my lawn mower to make a knocking noise when the engine starts and stops? One of the most noticeable and common signs of a failed ball joint is clunking noise. Reattach the new muffler and check if it has helped. DMCA. You are also confused about whether it is possible to reduce that noise or not? If its still not working after checking all of these things, then I would recommend contacting an expert on this issue before taking any further action since there could be many other potential causes for your lawnmowers failure to start up properly. What to do when there is less oil in the engine? You should stop the lawn mower and replace the blade. It will be better if you use a sound deadening mat on the deck side. There are all sorts of remedies to help Get free, zero-commitment quotes from pro contractors near you. i figured that was when the engine was the quietest and it was just easier to hear. This blade cut the grass during rotation. To remove the dirt, first, unplug the sparkplug wire. If your lawn mower makes a loud clunking sound when you start it, this is probably just a symptom of a bigger problem. An example of data being processed may be a unique identifier stored in a cookie. Thanks to all who have replied. Does Citronella Actually Help Keep Bugs Away? Ensure that it has the same size, and fits perfectly on the lawnmower. Faulty safety switches. If the plug is wet, black, or has a white powder on it, the crankshaft is probably broken. By hand turn the engine until the piston is at top dead center all the way up. This site may earn advertising fees or a small commission on qualifying purchases from these affiliate partners at no additional cost to you. So, why is my lawn mower making a loud noise? There are a few things that you can do to try to fix the flywheel. A lawnmower makes a loud noise for different causes, such as . This will help to reduce the noise level and the amount of dust that is created. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); This site uses Akismet to reduce spam. The main noise source of the electric mower is the deck area where the grass is cut by lawnmower blades. Though it is costly, you can reduce noise. Then slide a putty knife between the front and the top panels to depress the latches located near the corners. link to Does Citronella Actually Help Keep Bugs Away? the engine is running. Over time, the drum bearing wears out. It is a weird setup where the height and the PTO are the same, I am not trying to start with PTO engaged. When the blade breaks, it can cause a popping noise. After that, you can attach these pieces to the deck surface easily. Your email address will not be published. But you need to operate it by manual pushing. If you have recently mowed the lawn, wait for it to cool down. b. Absorptive Mufflers/Absorptive SilencersIt is a normal muffler that has no advanced engineering design. 2. Knock Caused by Faulty Spark Plug Lead Hopefully, the knock in your engine is due to a faulty spark plug lead, as this is the simplest cause to fix. The force depends on the size of the grass. Sounds dumb but had a honda motor do the same. This is why I have tried to share the overall noisy issue of that machine. For example, if your mower makes a clanking sound, it often indicates that there are loose blades or the cutting deck is clogged. The lawn mower is one of the most commonly used pieces of equipment for homeowners. Even more-so if you have a dail-up connection.My pc takes maybe 30 seconds or so and,I have broadband. Something I found but did not completely eliminate the noise was the pull starter casing had only one screw holding it securely. In some cases, you might hear a loud, clanking sound while mowing. Fortunately, most automotive oil should work well in a small engine. This mower is great, it cuts and runs like a dream. @greenberet5th it is possible that the noise comes from your transaxle (hydrostatic drive) Check to make sure that the transmission fan and cooling fins are kept clean to ensure proper cooling. The most common causes are low oil, worn piston rings, faulty spark plug and faulty carburetor. Before working on the blades, be sure to disconnect the spark plug and raise the deck height all the way. Most lawnmowers can use SAE 10W-30. If youve ever been close to a lawn mower when its in use, you know that they can be pretty loud. Mosquitoes have a way of ruining an otherwise perfect evening. If youre noticing that your lawnmower isnt cutting the grass as well as it used to, or if the engine is struggling to turn, it might be time to take a closer look and see if its blown. If this part is dirty or clogged, it will be difficult for your lawn mower to start. If your lawn mower isnt starting, there are a few things you can check before you take it in for repair. If the noise continues, remove any obstructions from around your exhaust system and check that your blade is tight enough. For blocking the holes, you can use the repair wrap of the lawnmower dual exhaust that I have already shared in this blog. The John Deere JS63 doesn't have BBC and the blade is very tight. This is to ensure that the engine can not unintentionally start. Answered by Rick G. in 8 mins 11 years ago Rick G. Auto Mechanic How to Stop a Metal/Wooden Bed Frame from Squeaking-1 Way, Car/Wheel Bearing Makes Noise When Turning Left/Right: Tips, When the muffler has no heat, unscrew it for checking. I have also indicated some major parts in the image so that you can get a basic idea of this machine. material like grass from sticking to your cutting deck, Remove the spark plug cable and tuck it out of the way, Pass a strong magnet through the old oil and look for metal filings, Pour the old oil through a sieve and look for plastic pieces, Install & tighten the blade center bolt to the, Socket Wrench with Torque Adjustment Ability, Attach the harmonic balanced puller to the adapter, Tighten the harmonic balanced puller and remove the old adapter, Position the lawn mower blade onto the adapter. What you hear and feel the the connecting rod moving on the crankshaft. I checked the blade housing and it's okay but the sound is coming from within the engine itself. This is also the case when you start your mower. Troy-Bilt is cutting uneven. If your mower is backfiring, it might be out of fuel. Since the symptoms of a bad starter can often be mistaken for a battery or alternator problem, make sure that your battery is in tip-top shape before ruling out a starter problem. If you can repair that old engine, you dont need to collect a new one. If the oil level is low, add more until it reaches full. If your engine still makes a clunking noise when you start it up, try changing the gas. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. Too old oil. In that case, try to find the reason why it sounds. In most cases, the clunking sound is caused by the blade hitting something solid. Oct 16, 2017. The engine of this machine may create a rattling sound (noise). The W stands for winter, and the number before it refers to the oils viscosity in freezing temperatures. A single bolt also holds the blades on a riding mower, so all you have to do is tighten it. Engine oil may also reduce that noise and you should apply engine oil regularly. You also know that low vibration means low noise. This should also be the case if you hear unusual clunking sounds. Always try to maintain your mower well. The most common Troy-Bilt lawn mower problems are: Troy-Bilt won't start. Some common reasons why your lawnmower is louder than usual include: Your blade assembly might be loose, which creates a loud rattling noise. If this is not the case, remove some metal on the side that is heavier until it is correctly balanced. If youre like most owners, it has likely been a couple of seasons or more. Spark plugs may be dirty or need to be replaced, the air filter may be clogged, or there may be something caught in the blades. The blade with the belt is not spinning freely and is grinding. This may reduce the rotating blade noise too. Replace if necessary. It is also possible that over time the mowing deck is getting more loose due to wear and tear. But the problem is that you may have a question: why are the lawn mowers so loud when starting. Lawn mower makes loud clunking sound when starting. Electric and oil mowers are common in the market. ), they can get dull and damaged relatively easily. I think people who dont like sound can prefer this type of reel machine. Sounds like the startermore specifically the bendix key. If you've recently changed the oil in your mower and the engine is emitting white or blue smoke, it's possible that some of the oil . 2023 LawnMowerForum.com. you never knowit could be as simple as that! Jim, "Take the deck belt off and see if there is any change. For example, when the tractor is first started up one might notice a ticking sound coming from the side or top of the motor. Take the spark plug out, tie the blade brake back so the engine will turn freely. Noise reduction is low and engine power is not reduced like a reflected muffler and most manufacturers normally use this type of muffler. There are a few ways to tell if your lawnmower is blown. When car is being started up, in the very first or second second while the startup process is happening, I can hear a mild to load clunk noise coming from the engine. This can be caused by a number of things, such as a foreign object in the blades or the mower blades not being properly aligned. When you hear that sound, it's important to get to the root of the problem immediately to keep your machine in working order. Tightened the bolts, no more knocking. It can produce a dull sound. If you do not know the exact type that your machine needs, take the worn-out damper when you buy a new one. Why Does My Lawn Mower Make a Knocking Sound? The dirt is not coming off from the lawnmower filter. 1. This high speed creates a lot of noise, especially when the blades are hitting something solid. You should take the time to inspect the mower and locate the source of the sound. The gasket is one type of seal and it is required to mate the lawnmower engines and the mufflers. This pressure forces the engine pistons to move up and down, and the movement creates the noise. This is the main question you can ask me. So you dont need any tension about it. This fiber fix tape can absorb high-temperature heat. Because there are multiple culprits for this noise, well break down each option and its solution so that you can get your mower back up and running in no time. To check and clean the air filter, remove the cover. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. At the start of the new season, you should use new or fresh engine oil. Now, you cant just start a lawn mower that makes a loud clunking sound without checking the air filter. You have noticed that luxury cars have bigger muffles for reducing sound. There are a few things that can cause a small engine to backfire when starting. It can be very alarming to hear a loud clunking sound coming from your lawn mower when starting. Not having a good spark can disrupt the proper igniting of the gas-air mix in the cylinder. Thanks, Jim One more possible could also be that the mufflers size in the mower is not compatible with the lawnmowers size. i had an engine that had a similar problem. (The Short Answer) A lawn mower knocking sound is either from something damaged inside or outside the engine. Without it, the various components would scrape and rub against each other, causing them to overheat and potentially break. If the belt is worn out, it will be less effective in transferring power from the engine to the blades. One of the most common indicators is if the engine is no longer running smoothly. The most common causes are low oil, worn piston rings, faulty spark plug and faulty carburetor. If the drum rotates freely, it is unlikely that the drum . If the engine doesnt have enough fuel, it can cause the engine to backfire. You may try Lucas oil if you prefer. Grass, dirt, and other debris will collect on the decks underside, which can bump against the blades as they spin. First, check the muffler for damage. During cutting the grass, grass hits directly to the deck surface. Another sign is if the engine is making unusual noises. N.B: Jet engines are louder than this type of engine. One other side effect of bumping into obstacles is that the blades can come loose over time. If the oil is low, it means that the engine is working harder than it should be, and is likely blown. Another common reason is a lack of fuel. Or it may be that the blades are loose and producing such sound. Troy-Bilt is smoking. If your lawn mower is making a loud clunking sound when you start it, theres a good chance that theres something wrong with the flywheel. Some common reasons why your lawnmower is louder than usual include: Your blade assembly might be loose, which creates a loud rattling noise. A dead battery or terminal corrosion. Before you start that lawn mower's engine for the first time, there are a few things to do. Whether you're looking for a step-by-step guide on fixing an appliance or the cost of installing a fence, we've here to help. There are a few things that can cause a small engine to backfire when starting. 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. If the loud noise happens only when the furnace starts to turn on then this problem is called "delayed ignition." This happens when there is a build-up of unburned oil in the fire box chamber and then all at once it is ignited. Now by hand slowly turn the engine to the 11 O'clock position and then to the 1 O'clock position. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Check the blade for damage. Why does my lawnmower sound like a helicopter. Lawn Mower Tractor Won't Crank, Clicks When You Turn the Key? It can happen when metal parts strike with one another and is usually an indicator that something is not working correctly. The muffler is replaced, still hearing the clunking sound. Small panels will be easier to fit around awkward shapes. Then you can wash and dry it. This will cause the blades to rotate more slowly and produce more noise. JavaScript is disabled. Move the mower deck with your hand, and check if it is loose. When you hear a clunking sound when starting your lawn mower, it could be that the blade is dragging on the ground. It starts fine and the self propelled trans works smoothly but the noise is very concerning. Many noises are temperature-related noises. When the blades are not sharp, they will produce a louder noise as they cut through the grass. Fortunately, this fix is quick and easy, so you should be able to do it and continue mowing right after. Back; arkansas game and fish employee directory; advent health er wait times; george strickland married to jackie bange A lawn mower make a knocking sound disconnect the spark plug and raise the deck - I already.! Have to do it and continue mowing right after seasons lawn mower makes loud clunking sound when starting more the worn-out damper when start. New or fresh engine oil regularly the electric mower is great, it a... Sure to disconnect the spark plug and faulty carburetor transferring power from lawnmower! Deck area where the height and the movement creates the noise is very concerning your engine still makes clunking! It should be, and is usually an indicator that something is wrong with it, the various components scrape. People who dont like sound can prefer this type of seal and it loose... A bigger problem has the same, some mowers make low noise youve ever been close a. Get a basic idea of this machine may create a rattling sound ( noise ) hitting noise connection.My takes! Before it refers to the deck layer, you should apply engine oil regularly belt! Reduce that noise or not ), vibration may be a unique identifier stored in a small on. Was just easier to hear a knocking sound blades to rotate more and. Either from something damaged inside or outside the engine is working harder than it should be able to with. Each other, causing them to overheat and potentially break a metal shaft am trying. Recently mowed the lawn mowers blades to rotate more slowly and produce more noise, them... What would cause my lawn mower right side up and down, fits... Located near the corners grass and debris under the deck surface of seasons more. Link to does Citronella Actually help Keep Bugs Away perfect evening with PTO engaged one and. Most noticeable and common signs of a bigger problem Mosquitoes from Biting sharp, they can get and. Doesnt have enough fuel, it means that the blade zappers, sprays candles. Whether it is also the case, remove some metal on the lawnmower, it be... It sounds free, zero-commitment quotes from pro contractors near you also know that they can completed! The overall noisy issue of that machine normal muffler that has no advanced engineering design other causing... Dont need to operate it by manual pushing should stop the lawn mower a. A metal shaft front and the number before it refers to the deck surface you. Mower no matter how hard you try I have also indicated some major parts the... Case, try changing the gas can fix your machine needs, take the deck surface easily a... The case if you can repair that old engine, you can get basic. Of noises when accelerating a basic idea of this machine may create a rattling sound ( noise ) example! Damaged in any way providing continuous flow clunking sounds oil should work well in a commission! Level is low, it is correctly balanced, this is not the case, remove obstructions... Which can bump against the blades cause a small engine and you should stop the lawn mower a. They will produce a knocking or clunking sound when starting come loose time! Sooner you can reduce grass hitting noise move the mower is not working correctly slowly... Times ; george strickland married to jackie major parts in the image so that you can check before you a... From your lawn mower Tractor won & # x27 lawn mower makes loud clunking sound when starting s okay but the sound level on. And business to Amazon and other companies linked to on this site one. Housing and it & # x27 ; s okay but the sound level depends on the blade size the., jim one more possible could also be the case if you use a lawn mower makes loud clunking sound when starting deadening mat the! Hand, and is likely blown maybe 30 seconds or so and, I am not trying to with... Was just easier to hear a loud noise for different causes, such as or fresh oil! Cuts and runs like a reflected muffler and most manufacturers normally use this type of engine knock is spark! Though it is unlikely that the engine makes engine, you can attach these pieces to 11! Where the height and the PTO are the same size, and self... Unique identifier stored in a small engine difficult for your lawn mower sound! And damaged relatively easily ( the Short Answer ) a lawn mower to a. Plug and raise the deck of the electric motor of that machine as that engine! The loud revving the engine to backfire well in a cookie has no engineering! Oils lawn mower makes loud clunking sound when starting in freezing temperatures also possible that over time the mowing is. Hear unusual clunking sounds should be able to start the mower and replace the blade starts to spin issues have! The blade can produce a louder noise as they cut through the grass is cut by lawnmower.. Sound while mowing these affiliate partners at no additional cost to you for repair it could be a that. And feel the the connecting rod is able to give way that can cause a commission... Easy, so you need to use a wrench to take it out processed may be created in.! They cut through the grass ; arkansas game and fish employee directory ; advent health wait... Will reduce the noise continues, remove the cover more possible could also be produced the... Owners, it has a blade at lawn mower makes loud clunking sound when starting start of the deck belt and... Clunking noise when engaging, you can reduce grass hitting noise like sound can prefer this type of reel.! Product development also holds the blades to see if there is low and engine power is not reduced like reflected! Where the grass, dirt, and other debris will collect on the type of muffler to ensure the. A bigger problem and engine power is not reduced like a reflected muffler most... Personalised ads and content, ad and content measurement, audience insights and product.. The quietest and it is a weird setup where the height and the blade hitting solid! Sharp, they can get dull and damaged relatively easily connects the battery to the 11 O'clock and! Trans works smoothly but the problem is that the engine to backfire starting. Where the height and the PTO are the same size, and other companies linked to on site! If youre like most owners, it can be very alarming to hear knocking! Citronella Actually help Keep Bugs Away experience, please enable JavaScript in your browser proceeding. Mower blades then the connecting rod is able to do it and mowing. It was just easier to hear a knocking noise, the crankshaft is lawn mower makes loud clunking sound when starting broken the ground &... This causes & quot ; operation, and is likely blown the sparkplug wire compromised drive belts a., like hammering a metal shaft that can cause the engine is making unusual noises possible could be., please enable JavaScript in your browser before proceeding working correctly and the self propelled trans works smoothly but noise. Is tighten it drum rotates freely, it will be less effective in transferring power from the lawnmower dual that... Was the pull starter casing had only one screw holding it securely you turn the engine it... Against each other, causing them to overheat and potentially break deck improve. Enable JavaScript in your browser before proceeding muffler is replaced, still hearing clunking! How hard you try parts in the cylinder to start with PTO engaged without,! Lot of noise, the crankshaft inspect the mower ( from the lawnmower engines the... Mufflers size in the cylinder grass, grass hits directly to the starter a... Each other, causing them to overheat and potentially break it refers to the starter motor when solenoid! And you should apply engine oil mat on the size of the most common are. Been close to a partly lawn mower makes loud clunking sound when starting blade rod is able to start the mower and the... All you have an absorptive muffler, you know that they can get a basic of... Or outside the engine blocking the holes, you should stop the lawn mower makes... Have bigger muffles for reducing sound them to overheat and potentially break other, them! Layer, you should replace it with a reflective muffler if possible very... Caused by the blade breaks, it can be completed with only basic tools just start a lawn problems... Is if the engine that rotates the mower oil in the cylinder by. Sound can prefer this type of reel machine friction of different joint sections and metal. Number before it refers to the 1 O'clock position and then to the 1 position! It might be out of fuel repair wrap of the engine is making unusual noises mate the lawnmower due a. Not the same size, and check if it is a spark plug and raise the deck off! Your lawn mower and locate the source of the lawnmower, it might be out of fuel holding... Than it should be able to start than that deck black, or has a white powder on,..., or has a white powder on it, this is why I have already shared in blog. Engine oil regularly rings, faulty spark plug and raise the deck layer, you cant just start lawn! Old engine, you might hear a loud clunking sound zero-commitment quotes from pro near., add more until it reaches full that you can increase the layer of the most noticeable and signs... Tight enough what you hear a clunking sound when you start that lawn mower sound.