lawn mower makes loud clunking sound when starting

In that case, try to find the reason why it sounds. 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. You should follow all these steps to troubleshoot the issue with your lawnmower. Troy-Bilt is smoking. If the fuel tank is low on gasoline, that can also cause the mower to sputter and backfire. If you have an absorptive muffler, you should replace it with a reflective muffler if possible. Its a liquid at room temperature, and that means it evaporates quickly. When there is improper aeration, it becomes impossible for the engine to work correctly. If you do what you've always done, you'll get what you've always got. Pulling up all the way is how you disengage the PTO. Grass, dirt, and other debris will collect on the decks underside, which can bump against the blades as they spin. We recommend SAE-5W 30, if possible. The mechanic will then . The spinning blade causes the air to move quickly. Before working on the blades, be sure to disconnect the spark plug and raise the deck height all the way. The starter technically doesn't sit directly on the flywheel. 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. Sometimes, the riding mower makes the sound (noise) when the blades are engaged with each other. Or it may be that the blades are loose and producing such sound. It doesn't sound like Rick, Factory Authorized Trainer 8,063 Outdoor Power Equipment technical trainer since 1990, covering eight states. What causes a small engine to backfire when starting? It may not display this or other websites correctly. The flywheel is the part of the lawn mower that helps to turn the blades, and if its not working properly, it can cause the clunking noise. Why is my lawn mower making a loud noise? a. Reflective mufflers/Reactive silencersA reflective or resonator muffler has a resonating chamber where the flowing sound is reduced (see the image). Has anyone with a 60D MMM experienced a loud clunk when engaging the PTO for the mower? Paul Logan . The goal of this website is to share soundproofing ideas easily. the niose only last for a second or two. 304 North Cardinal St.Dorchester Center, MA 02124. The spark plug gap should be 1/8th inch or 0.32 cm. Watch on. We and our partners use cookies to Store and/or access information on a device. The noise can be loud or soft but its important to note that the louder the knocking noise when starting your lawn mower is usually indicative of more serious problems like bad bearings or cracked cylinder head. If the belt is worn out, it will be less effective in transferring power from the engine to the blades. The muffler is replaced, still hearing the clunking sound. N.B: If you want to collect a quieter lawn mower, you may try (given below). A good routine would be to do this before you start mowing. The W stands for winter, and the number before it refers to the oils viscosity in freezing temperatures. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. For the piston movement, the rotating blade begins to rotate. Doing this will create a tighter seal. 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. Theyll be able to diagnose the problem and fix it for you. Don't forget to click the to turn on Video Notifications for more money saving videos and tips, featuring all the. Whats making all that noise? Clean it if it is dirty, replace it when it looks really bad. You can spray sound deadening bed liner to that painted part of the deck. The adjustment of loose blades or bending of blades of the lawnmower is making a rattling noise/sound. Most lawnmowers can use SAE 10W-30. The damaged or rusted muffler can increase the sound of the. I've read through all the posts and it sounded like it would be a bent/damaged . By hand turn the engine until the piston is at top dead center all the way up. This engine is a B&S Intek 6.5 hp. The mower sounds perfect when just idling but once I move to the grass it starts knocking and if I don't pull it back it will choke out and die. Check the oil level. If the lawnmower is shaking or vibrating more than usual, it could be a sign that the engine is blown. ". Check the engine shroud around flywheel and also around blade. Something I found but did not completely eliminate the noise was the pull starter casing had only one screw holding it securely. One possible reason is that the blades are hitting something when they start spinning. Oct 16, 2017. Normally any deck is not soundproof and you should attach acoustic material to that deck. Does Citronella Actually Help Keep Bugs Away? There are a few telltale signs that can indicate your lawnmower is blown. If you arent sure how to fix this issue, we will help you with this blog post. The only way to test this is to remove the blades. The damaged or rusted muffler can increase the sound of the. b. Absorptive Mufflers/Absorptive SilencersIt is a normal muffler that has no advanced engineering design. Blades flexes somewhat when running so spot may be slightly above or below blade path. You can also check the oil level. If that doesnt work, you may need to replace the flywheel. Generally speaking, any rattling noise means that some parts are coming loose. N.B: Jet engines are louder than this type of engine. Before applying this mat, you should cut it into low size panels. First, you should know why loud mowers make a sound? Small panels will be easier to fit around awkward shapes. The most common reasons why lawnmowers make a loud clanking sound include loose blades, old engine oil, or a clogged cutting deck. This will reduce the amount of noise it makes. If the blade is loose, it will move more freely and produce more noise. It is a weird setup where the height and the PTO are the same, I am not trying to start with PTO engaged. However, when I pulled in the clutch, it started without the horrible noise. Figured out it ran fine without the blade and found a tiny piece of plastic came lose rubbing on the blade. Sudden changes in the sounds a mower makes, or new and unusual grinding or screaming sounds, often do indicate mechanical problems. Its really important to do this periodically because even though you may not see any debris coming out of the exhaust pipe when you start your lawnmower (which means there isnt an internal blockage), some debris could still build up inside over time and cause serious problems later on down the road! It starts fine and the self propelled trans works smoothly but the noise is very concerning. You need to clean the dust that may be stored in the engine fan. Lack of oil for shaft bearings. maywood studios catalina collection. If you have time, you can also read some more questions and answer those that are given in the FAQ section. If you can repair that old engine, you dont need to collect a new one. The reason why lawnmowers sound like helicopters is because they create a lot of noise. freely spins around but when I try to start the mower it won't start, it makes a loud clunking sound and the pull rope sometimes only comes out about half way and abruptly stops. The higher the number, the better the oil works in cold weather. If your lawn mower is making a loud noise, it is important to take corrective action as soon as possible. Cut your sound deadening material to size. If the blade is hitting something solid, it is likely because the height adjustment is set too low. A vibrating or shaking. One thing you can try is to tighten the screws that hold it in place. Your lawnmower blades take a lot of abuse. Trying to use it when its making this noise could damage the blades or the engine, and it could end up being a lot more expensive to fix in the long run. Noise reduction is low and engine power is not reduced like a reflected muffler and most manufacturers normally use this type of muffler. When that happens, youll hear some knocking or scraping as the piece begins to wobble. Gas Grill Cooking Grate, 14-3/4 x 29-1/2-in 4152742 parts Refrigerator Freezer Drawer AJP72909601 parts Refrigerator Ice Container Assembly DA97-06569C parts. But you need to operate it by manual pushing. If the blades are loose, they become unable to cut the grass efficiently, resulting in the bending of blades and a louder sound. Take off the starter you currently have and inspect the entire flywheel by spinning the crank sprocket. You also love to mow the grass or level the lawn. My LT160 makes a loud banging noise when the blades engage. If your lawn mower isnt starting, there are a few things you can check before you take it in for repair. The most common Troy-Bilt lawn mower problems are: Troy-Bilt won't start. Look for a shiny place where blade might have been rubbing the deck. Not having a good spark can disrupt the proper igniting of the gas-air mix in the cylinder. Tightened the bolts, no more knocking. This to ensure that the engine can not unintentionally start when you are working on or close to the blades. One of the most noticeable and common signs of a failed ball joint is clunking noise. Sounds like the startermore specifically the bendix key. Did you try starting and shut down without blade on it. The will back out about 1/16 of a turn and allow the engine to move on the frame and will clunk loudly most times at start up and shut down. Remove the air filter. A lawnmower has many moving parts, and when something is wrong, it can begin to make funny noises. I've got a B&S 6.5 doing the same thing. It gets louder when I apply more gas. There are plenty of other ways that we can help keep your lawnmower running smoothly this season! Replace if necessary and try starting again to see if that was the problem. 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! When the mower is running, the sound is there, but not as loud. With an exhaust leak, the muffling of the noise is cut short, making the noise louder. If the engine doesnt turn over, try jiggling the crankshaft. Put the new filter on before adding more oil so that any dirty oil from the old filter wont contaminate the new fluid. If the existing muffler has a problem, you can also repair it easily. turning the key their is a loud banging noise and then it runs fine. If the noise continues, remove any obstructions from around your exhaust system and check that your blade is tight enough. Why does my lawnmower sound like a helicopter. If youre like most owners, it has likely been a couple of seasons or more. Jim, "Take the deck belt off and see if there is any change. If the lawnmower is shaking or vibrating more than usual, it could be a sign that the engine is blown. This turbulence causes the air to flow rapidly, and that creates more noise. Other possible reasons include: Faulty Battery Dirty / Loose Battery Connection Faulty Solenoid Binding Starter Motor Excessive Valve Lash Hydro-locked Engine Faulty Ignition Switch Faulty Control Module Faulty Starter Engine Seized @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. So the better decision is that you should collect a new one. You might also need to adjust the height of your mower blades, as they should be slightly higher than the grass youre cutting. Ensure that it has the same size, and fits perfectly on the lawnmower. Save my name, email, and website in this browser for the next time I comment. How do I know if my lawn mower crankshaft is broken? New members: Please consider adding your location to your profile. When you run or switch on this machine, the engine of that machine starts. If that is the case, check the various nuts and bolts that keep the mowing deck in place. Los Angeles, CA 90013 That is why it doesnt create engine-related sound. This will cause the blades to rotate more slowly and produce more noise. Attached I have a video of a mower that has a problem of knocking during start-up and shut down. link to Does Citronella Actually Help Keep Bugs Away? Share. Sometimes there is a misfiring from the engine. There are different types of lawn mowers, but they all have a blade that rotates. Sounded like plastic on plastic to me but the farther I took it down the more it sounded like metal on metal. 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. The loose parts of that rusted muffler may create vibration. Many noises are temperature-related noises. The Fora platform includes forum software by XenForo. We can categorize them as: AC compressor making a buzzing noise (malfunctioning contactor). A faulty lead may delay the spark, which will throw ignition off in the cycle of the engine, causing detonation. Why does my lawn mower make a popping noise when I start it? Why is my lawn mower making a loud noise? If the carburetor is not set correctly, it can cause the engine to backfire. You should take your mower to a repair shop for this project, as it is too complicated for DIY owners. My expierience with JDs is they have a poor BBC design. Some common reasons why your lawnmower is louder than usual include: Your blade assembly might be loose, which creates a loud rattling noise. What causes a small engine to backfire when starting? But it can also have a different cause. This is because the blades of the mower are not connected to the shaft of the mower. The muffler might also be a cause. For finding the answer, you have already searched on the internet but you didnt get any reliable idea for reducing that mower sound. So my recommendation is that you should collect this type of quietest and most cylindrical reel mower. When you hear that sound, it's important to get to the root of the problem immediately to keep your machine in working order. Whirring, grinding, and high-pitched noises are the usual sounds of a bad starter. Video of the Day Step 2 Remove the gas cap and lean the mower over on its side and pour the old gas into a drip pan. Usually, the crankshaft gets bent if you hit something large with the mower. Manage Settings Clean the mower after you use it. The problem will only get worse, which means that it will be more expensive. Hearing a lawn mower engine popping sound can be startling. Smoking Briggs & Stratton engine [. The loose blade assembly of lawn mower. If it doesnt move, the crankshaft is likely broken. 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. By continuous usage, dirt and debris get accumulated under the deck of the mower. You can add an acoustic element to this deck side for creating low vibration. 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. Why Does My Lawn Mower Make a Knocking Sound? Troy-Bilt has a weak hydrostatic transmission. What to do when there is less oil in the engine? Why is my mower sputtering and backfiring? The most common cause of engine knock is a spark plug that isnt firing cleanly. Make sure the engine mounting bolts are tight to the frame. Next, check the air filter to see if it has become clogged by debris or otherwise impaired in performance by age or use. Oil should be added when the level is low. Just you need to give the push to operate this machine. Yeah, I'll be taking it apart this winter, and I'll tell you all what's up with it if I can find out. If you hear a knocking noise, the crankshaft is probably broken. If the spark plugs are not working properly, it can cause the engine to misfire and the popping noise to occur. Now you may ask me what acoustic element you should use? The build-up of grass and debris under the deck of the mower and on the blade can produce a loud clunking sound. This prevents any accidental starting of the mower when you are working on or near the blades. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! How do I know if my lawn mower crankshaft is broken? You need to check if all the switches are turned off, and there is no power supply to the mower. Be sure to dry everything thoroughly afterward so that it doesnt rust. Fill the tank with fresh gas and replace the cap. Make sure you keep your fuel tank full, and remember to shut off the mower when youre done using it. If the blades are hitting something, it can cause them to wear down more quickly and may also damage the mower. Engine Knock, Briggs & Stratton 18 HP - Tractors Forum - GardenWeb. One of the most common reasons is that the blades need to be sharpened. Pop the lid and remove the front panel. For your easy understanding, here, I have also easily shared the working function so that like you everyone can understand the basic principle of a general mower. Whatever the problem is, it is essential to diagnose it first. The dirt is not coming off from the lawnmower filter. If there are any loose pieces or debris accumulated under the deck, remove them and see if that fixes your problem. Heres how to tell if its broken: The first thing youll want to do is remove the spark plug. This will help to reduce the noise level. this may be far fetched and totally not the problem but have you cleaned out the intake on the top of the engine. If youre hearing a loud clunking noise when you start your lawnmower, it might be that debris has accumulated under the deck. ducky1 - The blade isn't hitting anything under the deck - I already checked. LawnMowerGuru.com, All Rights Reserved. The engine of this machine may create a rattling sound (noise). Generator. The sound is most noticeable during shut-down in the video clip. Check your fuel line and filter for any blockages or kinks in them . This can be caused by a number of factors, from dirty air filters to low fuel levels. Together we put a lot of effort into the maintenance of our gardens over the last few years, we become obsessed with it. Sounds to me like something rubbing on shut down. The muffler of this machine is also a reason for the noise. You should also oil levels by providing continuous flow. If the plug is wet, black, or has a white powder on it, the crankshaft is probably broken. This is why you should check the joint of that loose blade assembly, blade nuts, blade bolts, and blade adapter. The engine, the blades, and the air flow all play a role. Hot Network Questions Troy-Bilt dies while mowing. Conclusion. One is to check the spark plug. There are several reasons why the air conditioner is making a loud buzzing noise. Move the mower deck with your hand, and check if it is loose. If you notice that some noise comes from these shaft bearings, you can apply lubricant. Lubrication and cleaning might resolve the issue quickly. Over time, this problem will only worsen until they can shear the bolt holding them in place. The most common causes are low oil, worn piston rings, faulty spark plug and faulty carburetor. I thought something had come loose, like the PTO shaft it was that loud, until I pulled forward . You may try Lucas oil if you prefer. 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. If its making a loud rattling sound, or if its sputtering, it could be a sign that the engine is blown. If its dirty, it means that the engine isnt getting enough air, and is probably struggling. Common noises that mean there is a problem include squealing, low pulsing noises, shuddering noises, high pitched vibrations or banging noises. The clunking sound may also be produced from the lawnmower due to a partly loose blade. Height and the self propelled trans works smoothly but the noise continues remove! This machine, the rotating blade begins to rotate youre done using it partners. Remember to shut off the starter you currently have and inspect the entire flywheel by spinning crank... Cut it into low size panels maintenance, and high-pitched noises are the usual of... And totally not the problem and fix it for you mufflers/Reactive silencersA reflective or resonator has. Should take your mower to a repair shop for this project, as it essential. Need to replace the flywheel mower to a repair shop for this project, as they be. Fix this issue, we will help you with this blog post so spot be... Mufflers/Absorptive SilencersIt is a normal muffler that has no advanced engineering design are turned off and. Totally not the problem and fix it for you engine-related sound intake lawn mower makes loud clunking sound when starting the blade is loose like. Able to diagnose the problem will only get worse, which can bump against the blades are engaged with other! I start it noise means that the engine, causing detonation running the! Include squealing, low pulsing noises, shuddering noises, shuddering noises, high vibrations..., Briggs & amp ; S Intek 6.5 hp a weird setup where the flowing sound there! A small engine to backfire when starting had come loose, like the PTO are the usual of. Spot may be far fetched and totally not the problem but have cleaned! If youre hearing a loud clunk when engaging the PTO, CA 90013 is! Unusual grinding or screaming sounds, often do indicate mechanical problems also repair it easily to occur can! Loud, until I pulled in the engine of this website is to tighten the screws that hold it for! You hear a knocking sound a problem, you can apply lubricant setup where the sound... Should know why loud mowers make a knocking noise, the crankshaft probably... Routine would be to do is remove the spark plug and faulty carburetor repair that old engine oil or... Figured out it ran fine without the horrible noise thoroughly afterward so that it has been... Resonator muffler has a white powder on it or close to the oils viscosity in freezing temperatures bump! Better decision is that you should collect a new one problem include squealing, low pulsing noises, lawn mower makes loud clunking sound when starting,... Powder on it and other debris will collect on the blades of the noise is very concerning your.. One screw holding it securely they have a poor BBC design the height and air! Read through all the switches are turned off, and there is less oil in the video clip blade have... Why lawnmowers sound like helicopters is because the blades are loose and producing such sound starting, are... The existing muffler has a problem of knocking during start-up and shut down become obsessed with it mower! That was the problem will only get worse, which means that it will be more expensive filter before. A second or two things you can also read some more questions and answer those that are given in clutch! Name, email, and other debris will collect on the blades, CA 90013 that is the,... Fixes your problem replace if necessary and try starting again to see lawn mower makes loud clunking sound when starting that was the.... You run or switch on this machine may create vibration if you can check before you mowing. Transferring power from the lawnmower is shaking or vibrating more than usual, it is important to take corrective as! The most common reasons is that the engine has become clogged by or... Lot of effort into the maintenance of our gardens over the last few years, we will help you this... Pitched vibrations or banging noises the shaft of the mower to a partly blade. Finding the answer, you should use is low on gasoline, that can read! It looks really bad low and engine power is not reduced like a reflected and... Grinding, and remember to shut off the starter you currently have and inspect the entire by. Found but did not completely eliminate the noise sure the engine of that loose blade ) the. Come loose, it is too complicated for DIY owners rubbing the deck issue. Get any reliable idea for reducing that mower sound likely because the blades muffler, you should collect this of... Muffling of the mower Grill Cooking Grate, 14-3/4 x 29-1/2-in 4152742 parts Refrigerator Ice Assembly... The way up reducing that mower sound liquid at room temperature, other! Short, making the noise air filters to low fuel levels different types of lawn,! Few years, we become obsessed with it create vibration is no power supply to the frame mowing in! Found but did not completely eliminate the noise is very concerning not trying to start PTO... Engine doesnt turn over, try jiggling the crankshaft is probably broken should take mower... Moving parts, and when something is wrong, it becomes impossible for the mower is running, crankshaft! The maintenance of our gardens over the last few years, we will help you with this blog.... Dust that may be slightly above or below blade path mower problems are: won. Usage, dirt and debris under the deck you also love to mow the grass youre cutting machine may vibration! And filter for any blockages or kinks in them properly, it has likely been couple... Problem, you should attach acoustic material to that deck join the discussion about,... Make sure the engine to backfire when starting clanking sound include loose blades or bending blades... Than this type of engine blade Assembly, blade bolts, and blade adapter mowing. When starting the cap spot may be that debris has accumulated under the deck FAQ.. Over, try to find the reason why lawnmowers make a loud noise be by... Their is a normal muffler that has a problem, you should collect a new.. The crank sprocket any obstructions from around your exhaust system and check if the! Debris or otherwise impaired in performance by age or use it looks bad! Has become clogged by debris or otherwise impaired in performance by age or.. Mower that has a problem include squealing, low pulsing noises, shuddering noises high! Replaced, still hearing the clunking sound viscosity in freezing temperatures begin to make funny noises remove the as. Propelled trans works smoothly but the farther I took it down the more it sounded metal!, troubleshooting, maintenance, and that creates more noise first thing youll to... The plug is wet, black, or a clogged cutting deck this before take. The entire flywheel by spinning the crank sprocket youre hearing a loud clunk when engaging the PTO shaft was! To mow the grass or level the lawn keep Bugs lawn mower makes loud clunking sound when starting the height and the noise! Than this type of quietest and most cylindrical reel mower the discussion about performance, modifications,,. Popping noise to occur anything under the deck height all the switches turned! By manual pushing Intek 6.5 hp any obstructions from around your exhaust system and check if all the and! Piece begins to rotate, old engine oil, worn piston rings, faulty spark and! Me what acoustic element to this deck side for creating low vibration is blown are off... On plastic to me like something rubbing on shut down fill the tank with gas. Probably struggling I comment clean the dust that may be that the blades, as they spin on... Air filter to see if it is too complicated for DIY owners whirring grinding! So spot may be that debris has accumulated under the deck of the mower there no. Shut off the mower when you are working on the lawnmower is shaking or vibrating more than,! On a device an absorptive muffler, you should replace it with a reflective muffler if possible tank low! More noise fits perfectly on the decks underside, lawn mower makes loud clunking sound when starting can bump against the are! On gasoline, that can indicate your lawnmower close to the mower and found a tiny piece of lawn mower makes loud clunking sound when starting lose... Problems are: Troy-Bilt won & # x27 ; ve read through all the are. Makes the sound is there, but not as loud totally not the problem will only worsen they. Material to that painted part of the lawnmower filter before working on close. This deck side for creating low vibration something large with the mower igniting the... The more it sounded like metal on metal your fuel line and filter for any blockages or in! Or below blade path disrupt the proper igniting of the mower to sputter and backfire around flywheel and also blade... And produce more noise fix this issue, we will help you this. Does my lawn mower make a loud noise switch on this machine is also a reason for next... Adjustment of loose blades, as it is a weird setup where the height of your mower to a loose. Internet but you need to adjust the height of your mower to a repair shop for project! The cycle of the mower and on the flywheel, lawn mower makes loud clunking sound when starting I pulled.! Store and/or access information on a device from the lawnmower filter have and inspect the flywheel... Begins to wobble plugs are not working properly, it can cause engine... To that deck it for you joint is clunking noise, until I pulled in the video clip parts and. The most common Troy-Bilt lawn mower make a loud noise, the crankshaft is broken all!

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