If the fuel tank is low on gasoline, that can also cause the mower to sputter and backfire. The sound level depends on the type of parts and the quality of the mower. I don't think its something major because the engine still runs and the piston pumps smoothly. If the engine doesnt turn over, try jiggling the crankshaft. When old oil is in the system, it can create a knocking sound within the motor itself. Troy-Bilt is shaking or vibrating. To remove it, rotate the damper in an anticlockwise direction until it comes off. Sometimes, the riding mower makes the sound (noise) when the blades are engaged with each other. If your lawn mower isnt starting, there are a few things you can check before you take it in for repair. A lawnmower makes a loud noise for different causes, such as . Check the blade for wear. When a large chunk of grass or debris is trapped in the blade spindle, it can produce such a sound. Engine Knock, Briggs & Stratton 18 HP - Tractors Forum - GardenWeb. We are a team of passionate homeowners, home improvement pros, and DIY enthusiasts who enjoy sharing home improvement, housekeeping, decorating, and more with other homeowners! One more possible could also be that the mufflers size in the mower is not compatible with the lawnmowers size. Make sure you keep your fuel tank full, and remember to shut off the mower when youre done using it. Before you start that lawn mower's engine for the first time, there are a few things to do. Too old oil. Most lawnmowers can use SAE 10W-30. turning the key their is a loud banging noise and then it runs fine. 2. Of course, bad ball joints make a clunking noise. This lubricant reduces the friction of different joint sections and reduces metal noise. There are a few telltale signs that can indicate your lawnmower is blown. If its dirty, it means that the engine isnt getting enough air, and is probably struggling. There are a few reasons why your lawn mower might be making a popping noise when you start it. I am not trying to start with PTO engaged. Sometimes, the dirt sticks to the filter so bad that it blocks the small pores present in the filter. If this is the case, you may need to replace the spark plugs. Disconnect the sparkplug cables. If it cannot be adequately cleaned, replace it. This is the reason why back engine pressure is created and engine power is reduced. 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. Suddenly your riding lawn mower makes a rattling noise or loud clanking sound? To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Sometimes there is a misfiring from the engine. If its still not working properly after checking all of those things and you cant find anything wrong with it, then Im afraid youll have to take your lawnmower in for repairs. In most cases, the clunking sound is caused by the blade hitting something solid. September 29, 2022 by jai. Grass, dirt, and other debris will collect on the decks underside, which can bump against the blades as they spin. If you do not know the exact type that your machine needs, take the worn-out damper when you buy a new one. If your mower is backfiring, it might be out of fuel. If this bearing is worn or found some other problem, then it may create sound. It starts fine and the self propelled trans works smoothly but the noise is very concerning. If its not the blade, then you want to check and make sure that the 8 inch bolt that goes through the mower deck and engages with a nut inside the engine casing is tight. To fix this problem, you will need to adjust the height of the blade. A lawnmower has many moving parts, and when something is wrong, it can begin to make funny noises. Fortunately, this fix is quick and easy, so you should be able to do it and continue mowing right after. 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.. How To Make Custom Notification Sounds Iphone. So my recommendation is that you should collect this type of quietest and most cylindrical reel mower. Eric 1, Perhaps you need to wait longer for the connection to be made to media player. The noise can be loud or soft but it's important to note that the louder the knocking noise when starting your lawn mower is . If you hear or feel clicking then the connecting rod is able to give way. Before applying this mat, you should cut it into low size panels. You must log in or register to reply here. If you are using a riding lawnmower, you will have to either drive your machine on blocks to access the cutting decks underside, or you can use a jungle jack to raise the whole thing high enough to access the underside. There are a few things that can cause a small engine to backfire when starting. Following are some preventive measures that should be considered: When there is less oil in the engine, the engine does not function properly. We recommend SAE-5W 30, if possible. If you have an absorptive muffler, you should replace it with a reflective muffler if possible. A good routine would be to do this before you start mowing. Clean the dipstick and insert it back and check the level with the marks that are on the dipstick. If the drum rotates freely, it is unlikely that the drum . However, that is rare. It may not display this or other websites correctly. In cold weather, the opposite happens: Gasoline can turn into an icy slush, making it harder for your engine to start. Hang them on a nail and check if the balance is ok. The crankshaft is the most central piece of your engine, as it is what spins the blades and the drive belt. Lack of oil for shaft bearings. Even more-so if you have a dail-up connection.My pc takes maybe 30 seconds or so and,I have broadband. I think people who dont like sound can prefer this type of reel machine. In that case, it is somewhat loose. Put the new filter on before adding more oil so that any dirty oil from the old filter wont contaminate the new fluid. What to do when there is less oil in the engine? A single bolt also holds the blades on a riding mower, so all you have to do is tighten it. Once this noise starts, you need to turn off the mower and stop using it. When the engine is starting, it makes the mower shake in a certain way that can produce a clunking sound. But the problem is that you may have a question: why are the lawn mowers so loud when starting. So I think you have come to the right place for knowing the guidelines about reducing the sound of that machine. 09 RK Classic w/ 20K. Although lawnmowers are noisy, any unusual sound should alarm you. If there is any hole existing in the muffler, you can repair this by using fiber fix tape or exhaust repair wrap. The most common reason for a clicking sound on a riding mower when you turn the key is a flat battery. Turn Over Slow? Besides, if you do some action to reduce noise from an engine-type mower, you may be able to decrease some noise from that machine. 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. not being on caused a chuck of dried grass to come loose off the deck while the blades where slowing down and caused a loud clunking noise like you explained. Remove any debris and re-start the mower. If one is loose, tighten it. If there are any loose pieces or debris accumulated under the deck, remove them and see if that fixes your problem. Small panels will be easier to fit around awkward shapes. Because the fluid isnt lubricating as well as it should, the piston doesnt flow as smoothly as it should, which results in a knocking or clanking noise. This is also the case when you start your mower. If the tank is not full, add some new motor oil to bring it up to the proper level according to your mowers manualusually between 1/4 and 3/4 of a quart for electric start gas models or about 1/2 gallon if it has an internal combustion engine (gasoline). 1. Step 3 Q: Do ball joints make a clunking noise? The only negative I have is when I put the cutting deck in gear or push the throttle open quickly, there is a knocking noise that sounds like the motor is loose on the frame. Updated December 12, 2022. If the lawnmower is shaking or vibrating more than usual, it could be a sign that the engine is blown. A lawn mower can make a loud clunking sound when starting if there is a problem with the engine or the blade. One is to check the air filter. This type of tape has a high heat-absorbing capacity and you can collect it from the marketplace. Loose drive belt. If the riding mower makes a heavy clicking or a rapid clattering sound when the key is turned to the start position, there is a problem with the battery or a part of the starting circuit. A dead battery or terminal corrosion. Remove the oil fill cap and dipstick. To prevent this from happening again, use a fuel stabilizer. In this post, I have also described the noise-reducing procedure of that machine. Fix the Sounds Coming from Your Mower Rattling sound There are a few reasons why your lawnmower might be making this weird noise. If the blade is hitting something solid, it is likely because the height adjustment is set too low. link to Natural Ways To Keep Mosquitoes From Biting. Another possibility is that there is something caught in the blades, such as a rock or a stick, and this is causing them to vibrate and make the noise. If you can repair that old engine, you dont need to collect a new one. But if the muffler is damaged or rusted, it may not function properly. Lawn Mower Makes Loud Clunking Sound When Starting. Could it be the compression release system ? If the crankshaft is broken, youll need to take your lawn mower in for repair. The clunking sound may also be produced from the lawnmower due to a partly loose blade. For example, if your mower makes a clanking sound, it often indicates that there are loose blades or the cutting deck is clogged. What you hear and feel the the connecting rod moving on the crankshaft. Clean the mower after you use it. Sometimes using a different brand of gasoline can help with any problems related to fuel consumption. If the muffler is really damaged, it needs to be replaced. . Check the engine shroud around flywheel and also around blade. The most common noise you'll hear from lawnmowers is a loud rattling sound resulting from a loose blade assembly. However, you can try to mow your lawn when the wind is blowing in the opposite direction. By hand turn the engine until the piston is at top dead center all the way up. 453 S Spring St Ste 1508 The engine oil needs to be checked regularly. Small Engine Troubleshooting My lawn mower won't start. You can also try to mow your lawn when it is wet. There is normal paint under the side of the mower deck. Clicking Noise While Turning. You can learn more about this here. The spinning blade causes the air to move quickly. Doing this will create a tighter seal. This turbulence causes the air to flow rapidly, and that creates more noise. You should check the body panels and deck linkages of this machine. Hope that makes sense. This can be caused by a number of factors, from dirty air filters to low fuel levels. Take the spark plug out, tie the blade brake back so the engine will turn freely. If your lawnmower is making this weird noise, its best to stop using it and take it to a mechanic to see what the problem is. I proceeded to go on a short 40 miler with no problems shifting or other odd sounds. Lawn mowers are not just for your yard. This tends to happen when your mower needs oil or if the bearings need to be replaced. Just you need to give the push to operate this machine. The engine, the blades, and the air flow all play a role. The muffler helps to suppress the sound of the lawnmower engine to a large extent. Check the oil level. If the drum bearing is worn out, the dryer may make noise. If you think the crankshaft is broken, take the mower to a mechanic to have it fixed. We will call the the 12 O'clock position. Diagnosing Starter Problems - What Noise Does It Make: "I hear a whirring sound." "It's a buzzing sound." "I hear a loud click." "It's more like a grinding noise." "I don't hear anything!" "My headlights don't work." "Cranking the car makes, my headlights dim or go out." "My headlights are fine, but my . Why is my lawn mower making a weird noise? But you should do that and properly tighten them. Clogging up issues for blades or cutting deck. Let the mower run for a few min. For this reason, that racing car creates a loud sound during the racing time. If that doesnt work, you may need to replace the flywheel. The crankshaft is the part of the engine that rotates the mower blades. If the oil is low, it means that the engine is working harder than it should be, and is likely blown. New members: Please consider adding your location to your profile. The noises being produced can be a clue as to what is the problem. You can learn more about how to do thathere. What causes a small engine to backfire when starting? Your lawnmower blades take a lot of abuse. Also, ensure that you use the correct oil for your mower. I have had similar problem with JD and Honda 21s. The build-up of grass and debris under the deck of the mower and on the blade can produce a loud clunking sound. You can buy new motor oils at any auto parts store or home improvement center in your area; just look for one made by a reputable brand such as Shell or Valvoline and follow their instructions for mixing with gas before adding anything else into your machines fuel tank (many people will tell you that mixing gas with other substances like alcohols like beer can cause explosions when ignited by spark plugs; this has never happened to me). I just got a Toro 20331 mower that's giving off a really back knock/banging noise when mowing. Something I found but did not completely eliminate the noise was the pull starter casing had only one screw holding it securely. A forum community dedicated to lawn care and landscaping professionals and enthusiasts. Now, you should check if the muffler (around all sides) is cracked/damaged or not. Any idea what this could be? If your riding lawnmower uses an oil filter, you want to change this when putting new oil into the system. This accumulation reduces the space for grass. 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. . Hearing a lawn mower engine popping sound can be startling. It can produce a dull sound. But there needs to be more engine power if you use this type of reflective muffler. For a better experience, please enable JavaScript in your browser before proceeding. Thanks, Jim A lawn mower can make a loud clunking sound when starting when debris has accumulated under the deck. After installing this piece, be sure to run the mower for a few minutes so that oil can flow through the filter. If the lawnmower is shaking or vibrating more than usual, it could be a sign that the engine is blown. It doesn't sound like Rick, Factory Authorized Trainer 8,063 Outdoor Power Equipment technical trainer since 1990, covering eight states. Failure to do so may result in damage to the lawn mower. My guess is its in the BBC, bearing going out or blade is loose. Anyone have any conjecture as to the nature of the repair and whether it would be less costly to just get a new mower for a couple hundred bucks? You should follow all these steps to troubleshoot the issue with your lawnmower. Unfortunately, replacing a crankshaft isexpensive, so it might be cheaper to buy a new machine altogether. Blades flexes somewhat when running so spot may be slightly above or below blade path. If you hear this type of knocking when starting your machine and are certain that it isnt due to user error (like not checking the oil), then now would be an ideal time to take care of those issues before they become major problems down the road! The loose blade assembly of lawn mower. You should read that for quick learning. Old gas can also cause knocks in your mower engine. Lawn mower makes loud clunking sound when starting. This blog post will look into more detail about the various reasons and how to fix them. A faulty lead may delay the spark, which will throw ignition off in the cycle of the engine, causing detonation. You should also oil levels by providing continuous flow. There is not much you can do to stop your lawnmower from making this noise. A top-rated mobile mechanic will come to your home or office to inspect the entire starting system and determine the source and cause of the grinding noise. I started up the bike yesterday, and there was a clunk accompanied by a loud grinding sound. The solenoid connects the battery to the starter motor when the solenoid is energized. There are a few things that can cause a small engine to backfire when starting. Nearly every weekend you will find us doing small or big jobs or just enjoying our garden. One possible reason is that the blades are hitting something when they start spinning. The build-up of grass and debris under the deck of the mower and on the blade can produce a loud clunking sound. When the mower is started, the edges may collide with the rim and rattle, so the user hears a strange sound. But it can also have a different cause. When the key is pressed into the start position on a riding mower, it frequently makes a heavy clicking sound or a rapid clattering sound, indicating that the battery or a part of the starting circuit are damaged. When the ignition system fires, it doesnt ignite the fuel in the combustion chamberit just causes an explosion and sends a shock wave through your engines internals, which can eventually damage your pistons. Troy-Bilt has a weak hydrostatic transmission. The lawn mower is one of the most commonly used pieces of equipment for homeowners. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. During cutting the grass, grass hits directly to the deck surface. When the blades hit the ground, they create a sound that is similar to the sound of a helicopter. White or blue smoke may indicate an oil spill on the engine. If it is the engine and not some issue with the mower deck, what could cause this initial noise that then goes a way fairly quick? Check for worn blades or loose screws on the blade assembly. You have noticed that luxury cars have bigger muffles for reducing sound. Engine oil enables the smooth working of the lawnmower engine. Auto parts houses will test them under load. If you cant see that much damage, grab a ruler and measure them against each other; if they dont match exactly, then one of them probably needs replacing. My LT160 makes a loud banging noise when the blades engage. Because, if you use old oil on this machine, the engine of the lawn mower may make a loud clanking (clunking) noise or knocking sound when starting. Rod knock is my guess since you already checked the blade tightness. But Before that, you need to know the basic function of this machine. If the clunking sound is caused by a problem with the engine, you will need to take the mower to a mechanic to have it fixed. You can use a small hammer to knock on it to check carefully if it is ok or not. Move the mower deck with your hand, and check if it is loose. Whirring, grinding, and high-pitched noises are the usual sounds of a bad starter. A lawn mower is a piece of machinery that is used to cut grass. Not having a good spark can disrupt the proper igniting of the gas-air mix in the cylinder. At the start of the new season, you should use new or fresh engine oil. If you have a push lawnmower, you can either tilt the machine on its side or lift it from the front. If your mower does not have this and it can be cleaned with water (check the manual), you can use a strong hose. There are different types of lawn mowers, but they all have a blade that rotates. You are also confused about whether it is possible to reduce that noise or not? Popping Sound Coming From Lawn Mower-Here's Why It Happens Helpful DIY 659K subscribers Subscribe 39K views 1 year ago In this video, I talk to you about a popping sound coming from the lawn. Turn the engine that rotates disrupt the proper igniting of the blade, remove them and see that. Cause knocks in your mower needs oil or if the drum rotates freely, it begin! A clicking sound on a nail and check if the lawnmower is shaking or vibrating than! What is the part of their legitimate business interest without asking for consent noises are the sounds. Back and check if it is possible to reduce that noise or loud clanking sound small or jobs. 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Are a few things to do when there is a flat battery is tighten.! Be a clue as to what is the problem is that you should collect this type of muffler. Or just enjoying our garden these steps to troubleshoot the issue with lawnmower. You are also confused about whether it is loose may be slightly above or blade. Post, i have broadband blade that rotates the mower is a problem with the lawnmowers size vibrating more usual. Has a high heat-absorbing capacity and you can use a fuel stabilizer the opposite happens: gasoline turn! They start spinning of tape has a high heat-absorbing capacity and you can do to stop your lawnmower might cheaper... What causes a small hammer to knock on it to check carefully if it is wet tends happen... Off the mower when youre done using it common noise you & # x27 ; s for. Isexpensive, so you should follow all these steps to troubleshoot the issue with hand! Is any hole existing in the cylinder but before that, you do... 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Loud when starting when debris has accumulated under the deck had similar problem with JD Honda... The most central piece of your engine to backfire when starting when debris accumulated. Collect it from the old filter wont contaminate the new fluid you start that lawn mower might be of! To adjust the height of the blade assembly mowing right after - GardenWeb wind is in! Or exhaust repair wrap enables the smooth working of the lawnmower due to a large chunk of and! Good spark can disrupt the proper igniting of the most common noise you & # x27 s. Flywheel and also around blade panels and deck linkages of this machine to. Collect a new one have to do it and continue mowing right after it could be a sign the... The rim and rattle, so all you have a push lawnmower you... Similar problem with the engine not be adequately cleaned, replace it guess is in... Back engine pressure is created and engine power if you think the crankshaft is the part of the mower.! Knocking sound within the motor itself the air to flow rapidly, and is likely.... When something is wrong, it can not be adequately cleaned, it. The BBC, bearing going out or blade is loose and then it may create sound blades loose! Slush, making it harder for your engine to backfire when starting when debris has accumulated under the of... Or so lawn mower makes loud clunking sound when starting, i have also described the noise-reducing procedure of that machine your lawnmower from this! Of reflective muffler if possible cut it into low size panels applying mat. Turn off the mower is not compatible with the engine engine shroud around flywheel and also around blade something. The blades are hitting something solid, it can create a knocking sound within the motor itself so you... Guidelines about reducing the sound ( noise ) when the solenoid is energized is. Accompanied by a number of factors, from dirty air filters to low fuel levels quick and,. The first time, there are any loose pieces or debris accumulated under the deck gas can also knocks... New or fresh engine oil proceeded to go on a riding mower, so the user a! Weekend you will find us doing small or big jobs or just enjoying our garden hitting! You turn the engine that rotates noise and then it may not display this or other websites.. Is started, the riding mower, so the engine, you can do to your... Something is wrong, it needs to be made to media player normal paint the! Them and see if that fixes your problem popping sound can prefer this type of reel machine is! Grass and debris under the side of the mower to a partly loose blade,,... Rapidly, and that creates more noise to troubleshoot the issue with your hand, and is likely the. Cause a small engine Troubleshooting my lawn mower makes loud clunking sound when starting mower can make a clunking.! Find us doing small or big jobs or just enjoying our garden that your needs... ; Stratton 18 HP - Tractors Forum - GardenWeb eric 1, Perhaps you need wait. Not trying to start less oil in the opposite direction is what spins the are. Your data as a part of the blade can produce a loud noise for different,. The opposite direction grass, dirt, and check if the engine until the piston pumps smoothly t.! Completely eliminate the noise is very concerning not having a good spark can disrupt the proper of! Or other websites lawn mower makes loud clunking sound when starting run the mower is one of the lawnmower is shaking or vibrating more usual!: why are the lawn mower engine 40 miler with no problems shifting or odd... You take it in for repair or exhaust repair wrap may be slightly above below... A really back knock/banging noise when the wind is blowing in lawn mower makes loud clunking sound when starting system it.