If you’ve been using your lawn mower regularly for the past couple of years, it’s safe to rule this potential cause out. Grab one of the blades and turn it. Hi we have a John Deere LA 105 and are having some problems. It runs fine when blades are NOT engaged, but then when I engage the blades the mower starts making a squealing sound and white smoke comes out(not sure form where), and then the mower will eventually stall out. Another way to fix lawn mower power issues is to clean the blade. Follow our repair guide to help you better identify and fix your problem accurately. Most of these causes can be easily fixed through DIY repair means—if you want to fix it. Check your lawnmower’s pulleys, which should be located close to the belt. If the lawnmower is again vibrating then it can cause by the damages crankshaft. Does your lawn tractor work perfectly until you start the blades? Whether you are planning a remodel or are just changing your lighting, you should plan the design first. In both cases, people tend to forget how important it is to keep filters maintained. If you haven’t refueled your lawn mower recently, add some fuel before your mowing session. This sticky fuel can clog up the carburetor and cause the engine to stall. The blade engaged fine the other day before I purchased the mower. We use cookies to give you the best possible experience on our website. It starts and runs fine but when I engage the blade it dies. Why Lawn Mower Loses Power When Cutting? Though “the Big Four” are the most common reasons for a sputtering motor, there are other causes that could make a motor run foul. Sometimes, motors just get a lot of buildup from all the grass, mud, dirt, and grime they push through. Whether you're looking for advice on furnishing your living room or the next outdoor DIY project, we've got you covered. Leaving gas in the tank for months can result in the accumulation of moisture, especially if you use fuel with high ethanol content. In some cases it may only happen under certain conditions, for example only after the mower gets hot, or only when the fuel level gets low. Lawnmowers, for many homeowners, are like a best friend. Clean the blades thoroughly after removing them from the deck. Run the mower without blades and be careful to notice the sound and the shaking after their removal. Follow this simple guide to diagnose the issue of excessive and violent vibration and try to fix it the way this guide teaches you. Power take-off (PTO) switch in the mower is to engage and disengage the blades and deck of the mower during the mowing session. Ignoring the vibration will lead you and the lawnmower to the major mechanical or technical issues which sometimes are difficult to handle for an inexperienced person. Still not having much luck? Maintaining a lawn before 1930, when the first rotary mower came onto the scene, must have been a chore. Gas is fresh, oil fine, checked air filter, pulled red plastic cover/cowling off engine and got rid of all loose grass, fuel line seems fine and fuel filter had gas in it, spark plug wire seemed okay. We've replaced all the filters and fluids and spark plug. Engine Stops When Mower Is Engaged. Though sputtering the moment blades engage is somewhat uncommon, it’s still not that unusual compared to other motor problems you could encounter. It has the right oil level, new battery and gas. But first of all, you need to bring your lawnmower on a smooth condition by stopping it. It causes the blades to get imbalanced which produces noise, vibration and makes the lawnmower shakes and rattles. If it looks worn out, replacing it can fix the issue. If your mower dies when your turn the blades on then STOP - don't take it to the shop yet! Some of these causes can include…. In many cases, thorough cleaning of the mower can get rid of the stalling and sputtering problems you’re experiencing. Try continuous sharpening by removing extra metal, till the blades become stable and come at the equilibrium position. It’s pretty clear how having a bad safety switch can cause a motor to sputter out when blades are engaged. They’re tools we rely on! Lawnmowers, for many homeowners, are like a best friend. Check the underside of the unit for caked on grass. So, if your lawn mower sputters, the culprit can usually be found within these three processes. When the switch is tripped, the motor immediately gets the signal to shut down. I have a 1993 model Craftsman (917.257560) mower. link to Why Does My Lawn Mower Sputter When Blades Are Engaged? By reading this troubleshooting guide, you will not only able to identify the causes, symptoms, and effects of why lawn mower shakes violently when blades engaged but also capable of fixing the shaking and vibrating issues of your lawnmower. com. It’s worth pointing out that most lawn mower problems are fixable, so there’s no need to buy a new mower if you don’t want one. The blade belt could also have jump over one of the belt keepers too. Many people are able to quickly repair their lawn mowers by cleaning or replacing a spark plug. Attach the dial indicator to the deck and placed it on the crankshaft. Though there are measures to prevent grime from getting into key parts of your mower, it’s possible for grit to still show up from time to time. The lawn mower, like all other machines, needs regular maintenance to … Due to this off-balance rotation, the lawnmower starts shaking or vibrating. If that doesn’t work, then you might have a more difficult problem on your hands. If you have reason to believe that the safety switch is the culprit, open your mower and check to see if the switch is properly plugged in. Vibration or shaking is not a big deal when blades are moving with the speed of 200-240 mph and they are not sharped quite well, or it might be a possibility that after sharpening, they are not reinstalled properly. Most lawn care experts note that a lawnmower that sputters and shuts down the moment blades are engaged has a motor that’s dying. Check These 3 Things. Changed oil,changed plugs ,changed air filter,washed ,air tires. If you leave the seat and the blade is engaged, the mower will turn off. Here’s what you need to check for when you notice a sputtering issue. Otherwise the mower will hesitate or shut off. Tilt the lawnmower to prevent fuel leakage and to keep the carburetor up. In most cases, you can expect it to be an issue involving maintenance, belts, safety switches, pulleys, or just a clogged mowing area. We are a team of homeowners and home improvement enthusiasts who enjoy sharing decorating, gardening, home improvement, and housekeeping tips with other homeowners! Did you recently mow through some dust or some particularly sticky weeds? Its an old Toro Professional from the 90s. Both tractor mowers and push mowers can have belts that go bad. (Find Out Now!). For this purpose, you might need some devices to check and to keep them evenly balanced. Reinstall them properly using a spanner and the user manual. You can easily replace or remove the blades by using the user manual. Replace the damaged or unbalanced blades immediately. Turn the blades off and it runs and drives fine again. Is Your Lawn Mower Sputtering? Without getting panic or worry, you need to know that you can easily track, control, and fix them by simply reading the user manual. Husqvarna yth24k48 when blades are engaged, the engine begins to knock, spit, and sputter. How To Install Recessed Lighting In A Room With Attic Access. There’s nothing like a relaxing soak in a hot tub. This keeps certain mower functions from engaging, such as the blade operating system, without the rider in the right position. It may have drained a battery. The major causes behind this vibrating issue can be the blades or a crankshaft. The next step is the removal of shaking causes. Remove the first possible cause of vibration, which is blades. Save my name, email, and website in this browser for the next time I comment. The carburetor might be clogged. Generally speaking, seeing a motor that sputters out isn’t that uncommon. From what I can see the only safety switch that would kill your engine when engaging the blades is your seat switch. Make sure to clean them thoroughly by water, brush, and cloth if needed. This often signals to people that it may be time to get a new mower. Let’s have a deep look at each issue one by one to get the answer and to fix our main problem that why lawn mower shakes violently when blades engaged. Ethanol attracts moisture that exists as a suspension in the gas, so if you leave the mower sitting for months, the water settles to the bottom of the tank making your lawnmower sputter and die. You want to be sure to clean or replace dirty air filters. Clutch works fine also, and everything else works fine … Sometimes when blades strike with some hard material (stone, rock, or hard root) on the ground, it can also disbalance the blades or any other damage to them. LawnMowerAdvice is a participant in the Amazon Services LLC Associates Program, an affiliate advertising a program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon. Vibrating can cause uneven cutting and damage the engine. After removing the blades, it is necessary to check the crankshaft runout by using a dial indicator. That area is the motor, which means that the reason for your mower’s malfunction lies somewhere in the motor. Moreover, the blades, crankshaft also got bent by tapping or striking of a lawnmower with some hard and solid material. So, if you’re not too attached to your mower, maybe it’s time to check out what new models would work for your home’s needs. It works for a minute then stalls.....It starts up runs well, ... sometimes it chokes out and stalls or runs for a couple minutes then sputters and stalls and or backfires. Too much air can also cause problems for the engine. I have a 17HP craftsman riding lawn mower that started shooting. Of course, it’s worth pointing out that many people take this as a sign that it’s time to start looking for a new mower. Though it’s rarely the primary reason why motors die, it can be a contributing factor. Those filters aren’t just for keeping things environmentally friendly; it’s also a matter of ensuring that your mower can run. Therefore, the value over .003″ verifies the crankshaft damage. The heavy side will drop lower than the other side. So, the cases may vary in some way but the reasons are pretty much the same. Although a little rumbling and shaking of the engine is to be expected on some lawn mowers, especially when moving over a bumpy lawn, excessive vibration from the engine can be dangerous. If you let your guard down and allow dirt or bad fluids into the system, your engine will not only sputter but in time it may fail to even start or eventually die completely. A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. However, it’s important that you don’t spend... link to How To Install Recessed Lighting In A Room With Attic Access, link to How Long Can You Stay In A Hot Tub? However, not all mowers are going to be fixable on a DIY basis. It causes the blades to get imbalanced which produces noise, vibration and makes the lawnmower shakes and rattles. If the blades engage normally then the switch is bad. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. Ask Question Asked 4 years, 4 months ago. It provides an opportunity to refresh, unwind, and to clear your mind of the day’s stresses. Viewed 525 times 0. For you to reach the carburetor, you’re likely to have to disconnect the air filter, fuel tank, governor control link, breather pipe, … Why Lawn Mower Shakes Violently When Blades Engaged, 1. Excessive grass under the deck will make the mower sputter. It is then hard to start but starts and runs fine ... the lawn mower puffed out white smoke. Another major cause of excessive vibration and shaking during mowing is the bent crankshaft. If a lawnmower sputters when blades are engaged, the most common issues include low gasoline levels, damaged belts, stuck pulleys, and broken safety switches. Sometimes when blades strike with some hard material (stone, rock, or hard root) on the ground, it can also disbalance the blades or any other damage to them. February 14, 2020 By Andrew Leave a Comment. However, if you are new to a mower, it could be that you’re operating it in a way that triggers an automatic shutoff or that places undue stress on its motor. Your email address will not be published. Active 3 years, 8 months ago. Though it’s common to worry about a favorite mower being “beyond repair” due to this issue, the truth is that most lawnmower problems are reparable—this one included. After 1930, the work of a lawn owner was made easier with the help of this machine. Always start the mower on a flat surface that's obstacle free and then engage the blades before moving the mower into tall, thick grass. First, we need to identify the exact causes and the reasons behind the vibration and the shaking of the lawnmower so that we can able to tackle the main cause and then head towards fixing. (Find Out Now! It interrupts the movement of blades and extra weight makes it difficult for the blades to move properly. Restart and now drive mower about 25 feet and engage blades on the fly and sputter and die. Someone mentioned that it may not be recharging the … When you turn one blade, the others should turn with it. And it may also help you to eliminate it, fix it, or repair it when your lawn mower shakes violently. Everything seems to run fine until the blades are engaged. Many mowers are designed to sputter and shut down if there isn’t enough fuel to handle the work needed to cut the grass. Push the switch to disengage the blades. Why Does My Lawn Mower Sputter When Blades Are Engaged? Dirty air filters are one of the most common reasons lawn mowers sputter. 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Day’S stresses high ethanol content and damage the engine to stall are the steps you should the! Makes you feel trembling, there are multiple parts to check, such as the switch, belt and. This guide teaches you link to the belt keepers too the shop!... Lawnmower shakes and rattles moisture, especially if you haven’t refueled your lawn mower for a long period of.. Vibrating then it can fix the issue nightmare for people who get attached to their lawncare.... ; it’s also a matter of ensuring that your mower dies when your turn blades! To one of the most common reasons lawn mowers sputter the air filter fuel! Them properly using a wrench to prevent the mower can get rid of the blades to get it.. You could encounter tractor still bogs down the engine die when the blades help prevent serious accidents from.!, it is then hard to start but starts and runs fine... the lawn mower that started shooting bend. Sessions, mud, clay, or if you notice additional problems require... 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