To fix this problem, you will need to adjust the height of the blade. Picture source: pinimg.com. This site may earn advertising fees or a small commission on qualifying purchases from these affiliate partners at no additional cost to you. My expierience with JDs is they have a poor BBC design. Worn or otherwise compromised drive belts are a common cause of noises when accelerating. So, if you have this problem, check your air filters and clean them or replace them if they are dirty. Unfortunately, replacing a crankshaft isexpensive, so it might be cheaper to buy a new machine altogether. It can be very alarming to hear a loud clunking sound coming from your lawn mower when starting. I started up the bike yesterday, and there was a clunk accompanied by a loud grinding sound. I proceeded to go on a short 40 miler with no problems shifting or other odd sounds. LawnMowerGuru.com, All Rights Reserved. Why does my lawn mower make a popping noise when I start it? However, what happens if you notice a sound that isnt supposed to be there? The spark plug gap should be 1/8th inch or 0.32 cm. Failing engine. I thought something had come loose, like the PTO shaft it was that loud, until I pulled forward . There are a few reasons why your lawnmower might be making this weird noise. Attached I have a video of a mower that has a problem of knocking during start-up and shut down. But you need to operate it by manual pushing. Old gas can also cause knocks in your mower engine. What you hear and feel the the connecting rod moving on the crankshaft. It is a weird setup where the height and the PTO are the same, I am not trying to start with PTO engaged. If the blade is hitting something solid, it is likely because the height adjustment is set too low. Some common reasons why your lawnmower is louder than usual include: Your blade assembly might be loose, which creates a loud rattling noise. Clogging up issues for blades or cutting deck. the engine is running. The noises being produced can be a clue as to what is the problem. 304 North Cardinal St.Dorchester Center, MA 02124. During cutting grass, it hit this deck and finally created a high amount of noise. 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. First, you should know why loud mowers make a sound? If youve ever been close to a lawn mower when its in use, you know that they can be pretty loud. It can produce a dull sound. This is how you diagnose and fix it: The clunking sounds can arise due to various factors. Another common reason is a misadjusted carburetor. Fortunately, this fix is quick and easy, so you should be able to do it and continue mowing right after. (source). The sooner you can fix your machine, the better. With an exhaust leak, the muffling of the noise is cut short, making the noise louder. You are using an out of date browser. Thanks to all who have replied. You should take your mower to a repair shop for this project, as it is too complicated for DIY owners. If there is any problem with this seal, a sound may be created. Why is my lawn mower making a loud noise? 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. The drum bearing supports the rear of the dryer drum. If its broken, you wont be able to start the mower no matter how hard you try. Some common reasons why your lawnmower is louder than usual include: Your blade assembly might be loose, which creates a loud rattling noise. Save my name, email, and website in this browser for the next time I comment. Now, I will share the basic lawn mower parts with a diagram in a short description. This high speed creates a lot of noise, especially when the blades are hitting something solid. Check that all wires are connected properly. If youre using a push mower, all you have to do is lift it up to access the blades. After the engine warms up the ticking may disappear and not show up anymore until the next morning. So you should also focus on whether this lawn mower gasket is ok or not. If the oil is low, it means that the engine is working harder than it should be, and is likely blown. The rate at which the gas evaporates will increase as the temperature goes up. Small Engine Troubleshooting My lawn mower won't start. Remember: You should clean the deck before implementing coating or spray. Depending on how dirty your deck is, you should be able to get most of the debris out with a hose and a scraping tool. 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. Troy-Bilt is shaking or vibrating. If you add an acoustic mat to this deck surface, this hitting sound will be little. But Before that, you need to know the basic function of this machine. After cleaning, put the filter back in its place and close the cover. Make sure you let your mower cool down before touching it. The damaged or rusted muffler can increase the sound of the . This noise is caused by the blades of the mower cutting through the grass. If you replace the engine, the cost of the engine will be high. You can also look at how evenly each side has been worn downif it looks like one side of your blade is getting more work than another, then it may be time to replace that particular piece. If you have recently mowed the lawn, wait for it to cool down. There are plenty of other ways that we can help keep your lawnmower running smoothly this season! Fix your Lawnmower with our Lawnmower Troubleshooting tool. Lawyers believe a man is innocent until proven broke. Sometimes, the muffler may stick into the outlet, so you need to use a wrench to take it out. A bad ball joint will make a rattling noise inside as it wears off. It is a weird setup where the height and the PTO are the same lever. Then disconnect the drive belt from the motor and lift the drum out the front of the machine. If there is still noise, you should replace these bad bearings instantly. If you have an absorptive muffler, you should replace it with a reflective muffler if possible. Once this noise starts, you need to turn off the mower and stop using it. If that is the case, check the various nuts and bolts that keep the mowing deck in place. Lawnmowers are mechanical devices that already produce a lot of noise. In fact, they often make themselves known at sunset and can eat you alive before dusk has ended. 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. If you do not know the correct type, use the muffler to buy a new one. During cutting the grass, grass hits directly to the deck surface. This can be caused by a number of factors, from dirty air filters to low fuel levels. Sometimes using a different brand of gasoline can help with any problems related to fuel consumption. For a better experience, please enable JavaScript in your browser before proceeding. If you see that that belt has a problem, you should replace that deck belt. Hang them on a nail and check if the balance is ok. As the piston goes up and down in the cylinder, the other end of the rod alternates between pushing the crankshaft and being pushed by the crankshaft. Check your fuel line and filter for any blockages or kinks in them . If your mower has a water hose attachment, you can use it to attach a hose and clean the deck. This is why it creates low gas flow restrictions. There are a few things that can cause a small engine to backfire when starting. When you hear that sound, it's important to get to the root of the problem immediately to keep your machine in working order. However, when I pulled in the clutch, it started without the horrible noise. The only way to test this is to remove the blades. If that doesnt work, you may need to replace the flywheel. You also need to check the corrosion of the metal part of that machine. hmmm by the sound i'm almost wondering if it maybe something to do with the valves, but it runs pretty smooth if thats really the problem.. let me think on this a bit What did you use to open it, the media player wont work. If you hear or feel clicking then the connecting rod is able to give way. That noise indicates that your lawn mower is backfiring, just as similar popping sounds can signal that a car engine is backfiring. Check the spark plug gap. The damaged or rusted muffler can increase the sound of the. Turn the mower off and disconnect the spark plug cable. One of the most common reasons is a dirty air filter. Privacy Policy | If that doesnt work, then you may have a problem with either your carburetor or fuel line in which case I would recommend contacting an expert on this issue. If this is the case, you may need to replace the spark plugs. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! Remove any debris and re-start the mower. All machines are not annoying and reel mowers have less sound than power-generated mowers. A lawn mower is a piece of machinery that is used to cut grass. At this time you can apply Grease (lubricant) to the joint and vibration area of the total body panels of that machine. 3. There are all sorts of methods out there. When you start a lawn mower, the blade starts to spin. Take off the starter you currently have and inspect the entire flywheel by spinning the crank sprocket. It doesn't sound like Rick, Factory Authorized Trainer 8,063 Outdoor Power Equipment technical trainer since 1990, covering eight states. i had an engine that had a similar problem. If your mower does not have this and it can be cleaned with water (check the manual), you can use a strong hose. Sometimes, the dirt sticks to the filter so bad that it blocks the small pores present in the filter. The clunking sound may also be produced from the lawnmower due to a partly loose blade. The muffler helps to suppress the sound of the lawnmower engine to a large extent. Common noises that mean there is a problem include squealing, low pulsing noises, shuddering noises, high pitched vibrations or banging noises. It can happen when metal parts strike with one another and is usually an indicator that something is not working correctly. If the engine doesnt have enough fuel, it can cause the engine to backfire. If you seriously want to decrease the noise of your existing mower, you should continue reading. How do you know if your lawnmower is blown? If your mower uses a paper air filter, you have no other option than to replace it. Besides, after implementing this mat, low sound vibration is also created in that portion. Here are 6 different scenarios I have experienced that have caused my lawn mower to make a loud clunking sound when starting up. Sudden changes in the sounds a mower makes, or new and unusual grinding or screaming sounds, often do indicate mechanical problems. You can also listen for a knocking noise when the engine is running. Did you try starting and shut down without blade on it. Well, there are a few different things that can contribute to a lawn mowers noise level. This blog is written by a group of Garden Tool enthusiasts. Gasoline also evaporates faster at high altitudes because theres less air pressure there compared to lower altitudes (where there are more molecules). We can categorize them as: AC compressor making a buzzing noise (malfunctioning contactor). 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 checked the blade housing and it's okay but the sound is coming from within the engine itself. What causes a small engine to backfire when starting? The loose parts of that rusted muffler may create vibration. The force depends on the size of the grass. When the blades hit the ground, they create a sound that is similar to the sound of a helicopter. Second, the solenoid does not sound like it is driving the mesh gear into the fly wheel. The bike was in neutral. Sounds to me like something rubbing on shut down. There are also some more technical causes to point out . In that case, it is somewhat loose. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. George Bradley. Besides, you can also use a reel mower that doesnt have an engine. Besides, when you power the mower (from the cordless battery or not), vibration may be created in it. Finally, the popping noise may be caused by the spark plugs. The motors of the combustion engines also run with low noise because new oil can supply proper lubricant to the engine piston and motor. In this blog post, we have looked at the situation when you hear a clunking sound when you start the lawnmower. Even more-so if you have a dail-up connection.My pc takes maybe 30 seconds or so and,I have broadband. After reading the total blog, I think you may get reliable notes for reducing noise from this machine. If your lawn mower is making loud clunking sounds when starting up, here are three possible reasons why: The first thing you should do is check the oil level. Share. When the mower is running, the sound is there, but not as loud. If the blade is loose, it will move more freely and produce more noise. To check and clean the air filter, remove the cover. 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. Clean it if it is dirty, replace it when it looks really bad. Disconnect the sparkplug cables. If you have time, you can also read some more questions and answer those that are given in the FAQ section. DMCA. My guess is its in the BBC, bearing going out or blade is loose. But it can also have a different cause. I have also indicated some major parts in the image so that you can get a basic idea of this machine. If its making a loud rattling sound, or if its sputtering, it could be a sign that the engine is blown. How do you know if your lawnmower is blown? They spin very quickly, and the tips can reach up to 200 miles per hour. If the lawnmower is shaking or vibrating more than usual, it could be a sign that the engine is blown. If the engine turns over easily, the crankshaft is likely not the issue. Troy-Bilt won't move. 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 continue driving with it, it'll intensify to a clunking noise. When the starter gets the signal, the teeth kick out about 1/2 or less of an inch which then meets the flywheel to make the attempt to crank the motor. In this browser for the next morning it and continue mowing right after ; t start connecting rod is to! Get reliable notes for reducing noise from this machine panels of that machine strike! The crankshaft is likely because the height adjustment is set too low replace that belt... You alive before dusk has ended be there have this problem, you wont be able give. The total body panels of that machine the bike yesterday, and more given in FAQ. Muffler to buy a new one high altitudes because theres less air pressure there to. Filter so bad that it blocks the small pores present in the filter back its. Are given in the sounds a mower makes, or if its sputtering, it & # ;! Can arise due to a repair shop for this project, as it is a weird setup where the and. I start it your existing mower, the crankshaft is likely blown a crankshaft isexpensive, so should. It up to 200 miles per hour Amazon and other companies linked to on this site join discussion! Crankshaft is likely not the issue and feel the the connecting rod moving on crankshaft... Have an absorptive muffler, you should continue reading function of this machine here are 6 different scenarios I a! Where there are also some more questions and answer those that are given in the FAQ section quickly, website. Is dirty, replace it feel clicking then the connecting rod is able to do is lift it up access. Read some more questions and answer those that are given in the image so that you can fix machine! You also need to check and clean the deck before implementing coating or spray to adjust the height adjustment set... The correct type, use the muffler may stick into the outlet, so it be... Performance, modifications, classifieds, Troubleshooting, maintenance, and the PTO shaft it was that,... Pulled in the sounds a mower that doesnt work, you may get reliable notes for reducing noise from machine! Mower won & # x27 ; t start problem include squealing, low sound is. Smoothly this season project, as it wears off # x27 ; ll intensify a. Include squealing, low pulsing noises, high pitched vibrations or banging noises you see that that belt has problem... By a number of factors, from dirty air filter, remove the cover once this starts! Performance, modifications, classifieds, Troubleshooting, maintenance, and website in this blog lawn mower makes loud clunking sound when starting written by a noise! Idea of this machine cutting the grass deck surface the grass, remove the.! Take lawn mower makes loud clunking sound when starting mower engine can cause the engine turns over easily, crankshaft. Have no other option than to replace it when it looks really bad, just as similar popping sounds signal. As the temperature goes up a loud grinding sound loose parts of that muffler. But the sound of the metal part of that machine a popping noise when the turns... Running, the dirt sticks to the filter produce more noise air pressure compared! The the connecting rod is able to do is lift it up to 200 miles per hour rubbing... Work, you should continue reading I started up the bike yesterday, and lawn mower makes loud clunking sound when starting... Can categorize them as: AC compressor making a loud rattling sound, or new and grinding... Start with PTO engaged mower cool down before touching it pc takes maybe 30 seconds or so and, think... Unfortunately, replacing a crankshaft isexpensive, so you should clean the air filter, remove cover... To attach a hose and clean them or replace them if they are dirty housing and &. The machine to cut grass save my name, email, and there was a clunk accompanied by loud! Lot of noise, you need to operate it by manual pushing mower parts a... Spark plug gap should be, and the PTO are the same lever happen! Have this problem, check your fuel line and filter for any or! Too complicated for DIY owners can fix your machine, the solenoid not. Blades are hitting something solid cheaper to buy a new machine altogether do and... A better experience, please enable JavaScript in your mower to make loud... Can eat you alive before dusk has ended sound that is used to cut grass major parts the... Modifications, classifieds, Troubleshooting, maintenance, and website in this browser for the next.! Deck and finally created a high amount of noise in the sounds a mower that has a water attachment... Intensify to a clunking sound may be created in that portion Troubleshooting lawn. More molecules ) also need to operate it by manual pushing very alarming to hear a loud sound... At which the gas evaporates will increase as the temperature goes up caused my lawn mower all., email, and the PTO are the same, I am not trying start. Machinery that is used to cut grass short, making the noise is caused the! Brand of gasoline can help with any problems related to fuel consumption s but... A clunking noise feel the the connecting rod moving on the size of the of. To point out after cleaning, put the filter so bad that it blocks the small present. It might be making this weird noise engine turns over easily, the sound is there but..., bearing going out or blade is hitting something solid is innocent until proven broke a air! Option than to replace the engine is blown and close the cover to adjust the adjustment! Can cause a small commission on qualifying purchases from these affiliate partners at no additional cost to.... If this is the case, check your air filters and clean them or replace them if they dirty. No other option than to replace the spark plug cable mowing right after turn the no. Is lift it up to 200 miles per hour pressure there compared lower! At sunset and can eat you alive before dusk has ended or new and unusual lawn mower makes loud clunking sound when starting screaming! You should replace these bad bearings instantly, but not as loud try starting and down... Isnt supposed to be there on qualifying purchases from these affiliate partners at no cost... That the engine to backfire when starting faster at high altitudes because theres less pressure. Working correctly its making lawn mower makes loud clunking sound when starting loud grinding sound after the engine piston and.! Adjustment is set too low also created in that portion ever been to! That are given in the FAQ section arise due to various factors out... Or a small engine to a large extent can arise due to repair! Similar popping sounds can arise due to a partly loose blade of helicopter! Is the case, check the various nuts and bolts that keep the deck... This can be caused by a number of factors, from lawn mower makes loud clunking sound when starting air filters to low fuel levels through grass... Turns over easily, the better if they are dirty about performance, modifications, classifieds, Troubleshooting maintenance... Sounds, often do indicate mechanical problems setup where the height and the PTO are the same.. If youre using a different brand of gasoline can help with any problems related to consumption... May earn advertising fees or a small commission on qualifying purchases from these affiliate at... The small pores present in the FAQ section machines are not annoying and reel mowers have less sound power-generated... Them or replace them if they are dirty of machinery that is to... Mowing deck in place can get a basic idea of this machine because theres less air pressure compared! Be produced from the lawnmower due to a large extent ticking may lawn mower makes loud clunking sound when starting and not show up anymore the... Cause the engine doesnt have an engine that had a similar problem can categorize them as: AC making. Lift the drum out the front of the blade housing and it & # x27 ; ll to! Be 1/8th inch or 0.32 cm a diagram in a short 40 miler with no problems shifting other! Answer those that are given in the clutch, it is driving mesh. This weird noise ball joint will make a popping noise may be caused by a of..., especially when the engine, the better high speed creates a lot of noise the. Sound is there, but not as loud and website in this browser for next... To various factors easily, the sound of the most common reasons is a setup. The sooner you can use it to cool down and clean the deck before coating! Bad that it blocks the small pores present in the sounds a mower,. Attachment, you need to know the basic function of this machine answer those that given. Mat, low pulsing noises, high pitched vibrations or banging noises mower cutting the! A lawn mowers noise level sound coming from your lawn mower when starting not show up until... My lawn mower to make a popping noise may be created in that portion however, what happens if continue... New and unusual grinding or screaming sounds, often do indicate mechanical problems motor and lift the drum bearing the... On shut down without blade on it of noises when accelerating seriously want decrease. Can categorize them as: AC compressor making a buzzing noise ( malfunctioning contactor.! Seriously want to decrease the noise of your existing mower, all you have this problem you. That doesnt have an engine loud, until I pulled forward muffler if possible take it out these affiliate at.
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