If you do find damage or wear, it’s important to replace that fuel line. It’s worth double-checking to make sure the hose doesn’t have any leaks or cracks. Also, you need to be careful not to overtighten this bolt. Poke a bread tie wire through the small hole of the main jet and clean it up. That is why you should carefully clean it. It is the most common reason a lawn mower starts and then dies. Step #7Īn important part to mention is main jet. Some compressed air is also helpful for blowing gunk out of hard-to-clean areas. Before using any harsh chemicals, you should try this method first. You can pour it into a basin and soak the carburetor and its components in the Coke for a few hours. Coca-Cola is great at removing rust because of its citric acid. Now you’ll need a can of carburetor cleaner or a can of Coke. If it is a Quantum mower, typically there are three parts that you will want to replace: Take off any other screws, gaskets, O-rings, or hardware remaining on the unit, including the choke if it is removable. The gasket can also be fragile, so you should be careful while working with it.Īt this point, some carburetors will have splash plates you need to disconnect and set aside. You’ll need to remove the screws and pin that secure the float valve take it easy on them since they could become stripped. Carefully rotate and pull the carburetor until you are able to get it free. Remove the fuel hose from the carburetor and then take off the screws, nuts and clamps holding the carburetor in place. When you’re working over the carburetor, be sure to follow proper safety protocols by wearing gloves and safety glasses. It is also generally located below or behind the air filter and linked to the gas tank.īefore you start, you’ll want to gather the following tools: However, it is typically attached to the engine’s side or top. The location of the carburetor can vary depending on the type of lawn mower. If the problem with your lawn mower is the carburetor, you may need to take it out of the machine in order to clean it. But still, if you want to try, you can skip to the next part. It is not possible to thoroughly clean a carburetor without removing it. So the engine starts, but then it stalls. When you finally start up the lawn mower again, that thick, gooey fuel does not flow through the engine properly or burn as it should. That means the rest of the fuel congeals into a sticky, thick mess. That period of disuse can be one reason for the lawn mower’s malfunction.Īs time passes and the mower sits idle, some of the more watery components within the fuel can evaporate. Has it been a while since you last started up your lawn mower? Maybe it’s been sitting in the garage or in a shed for a while, unused, while you were on vacation or over the cold winter months. Gasoline can go “stale” and start to “varnish” or sour within just two or three weeks of being left idle, so it’s a good idea to drain it off whenever you plan to stop using your mower for a while. You may find that a gas refill or replacement solves the problem. However, if your fuel is low or it looks thick and sludgy, your first step is to drain off the old fuel (being mindful of local regulations for disposal of such waste products) and add fresh fuel. If there appears to be enough fuel, and it’s flowing through the fuel line, you would move on to other potential sources of the problem. You should also check the fuel line for clogs and take a look into the carburetor bowl to ensure that fuel is reaching that part of the engine. For those that don’t, you can take a quick peek inside the tank. Some lawn mowers have an actual fuel gauge, while others do not. Whether you’ve got a Briggs and Stratton lawn mower, a Toro lawn mower, or some other type of gas mower, checking the fuel should be fairly simple. You may have been absolutely certain that the mower still had gas in it the last time you started it up, but perhaps someone else has run the mower since then, or maybe there just wasn’t as much fuel in the tank as you thought. However, you shouldn’t throw in the towel yet, because there are a number of possible causes for why a lawn mower starts then dies-and you can actually resolve some of them fairly easily, giving you plenty more mowing sessions with that lawn care machine.įirst-and this may seem like a no-brainer, but bear with us-check the fuel levels. You might be tempted to just write the whole thing off and buy a new one. Worse still, a lawn mower is a complicated machine, so at first glance, you might not have any idea how on earth to solve the problem. Imagine your neighbors glancing over curiously, wondering what on earth is up with you and your problematic mower. Is your lawn mower starting up just fine and then quitting? When your lawn mower starts then dies, it not only delays the completion of your lawn care chores-it can also be kind of embarrassing.
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