Reply. If your mower has one, it must be very clean. You can email the site owner to let them know you were blocked. Again, defective spark plugs, old gasoline, and dirty air filters may cause engine problems. Most people dont know gas goes off and gas left in small engines can cause real problems as you already know. All popular mower engines are covered, Briggs& Stratton, Honda, and Kohler. However, if the flap doesnt open, the engine will stall as its now getting too much gas. Lawn Mower / Equipment Engine Wont Start As the engine warms up, moving the choke lever off, opens the flap again. I have a 6.5 horse Craftman Lawnmower, i can get it started but it will only run for a few minutes. However, if youre unable, then it would be time to bring it to a specialist. If its full, check that the fuel shut-off valve is open and that it is clean. Prevent this problem in advance through proper, Disconnected, dirty or fouled spark plugs are common causes for engines that wont start. No way I am that stupid LOL. Don't mean to question your opinions, or rude, I was just curious. After knowing the common issues, its time to inspect the parts and fix them quickly. This is another common carburetor problem associated with overheating engines. After a few failed attempts at running your Briggs and Stratton mower, please take a break! When your engine starts and stalls, it is often due to standard maintenance problems. See an authorized dealer or contact Briggs & Stratton if you are unsure of any procedure or have additional questions. It seems like it is just not read more. Stale fuel, dirt and debris are the most common cause of outdoor power equipment not starting properly. Fully Serviced and in excellent condition Horizontal Drive ShaftNew Carburetor, Air filter, Spark plug and Oil change. A dirty or clogged carburetor is a very common cause of engines that wont stay running. In addition to the air filter, you should also clean the spark arrestor screen located behind the muffler, if your engine has one; check the manual if you aren't sure. The first step is to analyze the situation and then take the time to clean it, unclog it, and change your spark plug. Yeah, I haven't just let it run on it's own yet like that. The most common reason for an engine to start and then dies is a clogged or dirty carburetor. Starting cable connectors loose. 1 Most Solutions for Stalling Engines in Pressure Washers Often Target Fuel System. Before you check your Briggs and Stratton engine's oil level, make sure your lawn mower is on a flat surface, and the engine is level. Allow the oil to go to other parts of the engine; leave it for about an hour. Is the engine emitting white / blue smoke? Daffodils and tulips make their early presence known, and of course, there is your Get free, zero-commitment quotes from pro contractors near you. These can range from a faulty spark plug lead, shorted kill switch or, If there isnt proper valve clearance or theres a leak, this can cause compression problems that keep an engine from starting. Oct 6, 2013 / Briggs and Stratton won't stay running. Also not good to run the engine without the air cleaner on anyway. To fix this, remove the bowl screw. Inside the bowl, there is a floater, and this controls gas going in and out of the bowl. I have divided this guide into two pages in the interest of page speed, strap yourself in. A clogged air filter, vapor lock, or dirty carburetor often cause this issue. When this happens, air wont be able to pass into the carburetor. Carb cleaner and compressed air are a must. I have a Briggs 6.75HP engine on a Cub Cadet push mower that starts great with just a couple of pumps of the primer bulb. If they are faulty, install a solid-state ignition (see Troubleshooting Ignition Problems). Briggs & Stratton riding mowers or push mowers with an electric start may have a weak battery, corroded or loosed cables, or a bad ignition . I did feel of my old diaphragm and compared it to my new one, and yes, I do notice a difference, the newer one is muchmoister? Not sure which exact carb you have the long one with the choke that you pull out on the end of the carb? This stops the flow of fuel to the carburetor causing the engine to stall. Or one of the ball plugs is stuck. . That said, not all OHV Briggs engines use the .004 and .006" specs, just most. Cloudflare Ray ID: 7a1958ad5cccd6a6 Can You Rent Riding Lawn Mower? Last month, I also faced the same problem with my MTD, Read More Yard Machine Lawn Mower Steering Issue: Whats the Reason and Solution? Feed Bolt Not every fuel bowl will have the fuel feed bolt. I may buy a new one. The most common problem on those old carb's is a bad gasket. Check again the condition. Clean out the parts and replace them if needed. As it gets clogged with dirt, oil or residue. Reassemble it with a new float needle and seat. If you're not spraying carb cleaner in the carb, put the air cleaner back on. If you don't know how to replace the seat, post back with engine numbers and I'll post a procedure. Final Thoughts. Is the flywheel loose? What happens when you just let it idle without touching anything? However be warned that those tiny jets can just as easily be plugged up by poking things into them and manually loosening gunk so I'd be cautious as to how you proceed. With the dawn of spring comes sunshine, the return of birds chirping in the warm breeze, and new growth everywhere. 4,218 satisfied customers. Check out the Champion 4375/3500-Watt Dual Fuel . Carburetor cleaner Recommended as it does a pretty good job at cleaning the carburetor. These can be found in your operators manual. When your lawnmower has this problem, you essentially have one of two choices. The most common reason for replacing the carburetor is if the engine is hard to start, leaks gas, runs poorly, wont start or stay running.Click here to purchase Part #799866: http://www.repairclinic.com/PartDetail/Carburetor/799866/2025740?TLSID=1876Additional small engine repair, troubleshooting tips, help with finding your model number, and part replacement videos: http://www.repairclinic.com/RepairHelp/Small-Engine-Repair-Help?TLSID=1876All the information in this carburetor replacement video is applicable to the following brands: Briggs \u0026 StrattonTools used: flat-head screwdriver, Phillips screwdriver, nutdriver, clamp cutter, socket wrenchModel displayed: Briggs \u0026 Stratton small engine 128T05/5123-B1Connect With Us! Set the tool's throttle lever to low, then hold the throttle cable lever steady while you turn the idle screw to adjust the idle speed. Tom. You can clean a carburetor with a spraying carburetor cleaning without removing it. Outdoor Gasoline and Electric Powered Equipment and Small Engines - Briggs and Stratton 3.5 HP wont stay running - I recently bought a used 3.5 HP Briggs and Stratton. If it gets much dirty, then replace it with a new one. okay, here is my problem. Click to reveal This mixture will spray into an even more refined form and go into the spark plug chamber. Oct 1, 2008. Is the valve clearance set incorrectly? I was starting it and I was moving the screw to help it run better when it died. Then, air pressure atomizes the gas and mixes this with the oxygen. Check the float bowl jet (which is the bowl screw) and make sure the jets both horizontal and vertical are clean and open. Dont worry, I got a new tube and brass pipe. Mixed with the gas it will stop gumming and keep the gas fresh for up to 2 years. You guys think it's valves? Remove the retainers and lift out the valves , compressors and springs Outdoor Gasoline and Electric Powered Equipment and Small Engines - briggs and stratton wont stay running - I have a briggs and stratton on a weed eater lawn mower 22 cut 4.5 hspr. then starting the engine if the loosening the gas . Check it out now! If it gets old/brittle it doesn't seal. The seal not seen in this picture will usually stay on the carburetor, sometimes it will come off with the bowl. Maintenance & Repair Schedule, WARNING: Always read the engine and equipment manual(s) before starting, operating, or servicing your engine or equipment to avoid personal injury or property damage. I have pulled the carb off, cleaned it up . Next, try to remove the carburetor float & other parts to separate the carburetor from the mower. The air vane and the governor act together to slow the throttle down and prevent the engine from surging too fast. You should also check that the spark plug gap is set properly. i hope that main jet isnt clogged. Your email address will not be published. Now, it is not wanting to start at all. The spark on the spark plug ignites the gas in the piston, but if the air filter is clogged or the gas can't flow, then the engine won't start. Repairing is possible but can be hit and miss. John Deere Lawn Mower Won T Stay Running Troubleshoot Guide Thriving Yard. It'll get it to almost full throttle, but it won't push it back to closed. When I first got it, it would only run with starting fluid and choked. I wrote this simple guide that walks you through the whole process How to Tune-up your mower. Add oil to the engine. Briggs and Stratton stamp their codes into the metal valve cover at the front of the engine. The jet lives in the center of the carburetor, and as the engine inhales air, it also sucks gas up through the portholes in the jet. At lunch I talked to the lady at the law mower shop, she did tell me that she has them in stock, however, we got swamped with cars today at the dealer, so I didn't get off work until 6:00, and by then they were closed. Cuz it seems like its just starting to run just fine until you touch it then it dies. If the step fails to start the engine, try for the next one. It does start with fluid now, but still I have adjusted the screw many times and it shows no sign of turning over. To keep your engine running smoothly, you should check your plug after 25 service hours and replace it if necessary. Basically, the blocked hole creates a vacuum in your tank. I know. Easy 6 Steps SolutionContinue, Shafts and pulleys, especially on riding mowers made by Murray, let the blades know when the engine is turning. Help! Nice! Continue. Similar Items - Briggs & Stratton Quantum 5 HP Engine - Fully serviced, Excellent Comp $80. View our Privacy Policy here. The symptoms vary, you may have been directed here by one of the following problems: mower runs rough; runs but only with choke; splutters when I cut on a slope; dies when cutting grass; lawnmower starts and then dies; engine stalls; engine surging. Although you would never assume this would be a problem, if you have too much oil in your machine, then you may have too much fat in your oil reservoir. It somehow, still isn't getting any gas. Remove the carburetor and check whether theres dirt on the outside clamp or not. If you have cleaned your carburetor, your engine stalls, and there is also white smoke coming out of the engine, then that is a sign of too much oil. Steps 14, 16. Okay, so I did some more testing and screwed the screw all the way in to almost snug like Rooster said, and here is what is happening. Refills the gas tank with fresh fuel. Kohler has a tag and Honda have a sticker on the engine. You have to inspect the relative parts which can prevent the start of the engine. Although not all do, some gasoline caps have holes in them. All, You can learn more about this here. On the other hand, your problem could simply be that your carburetor is attached too tight or the wrong way. It will stay running until I stop pumping the primer. Tilt your lawnmower up and put a heavy object on the handle. Save my name, email, and website in this browser for the next time I comment. It has the same end result as the choke plate gives the engine extra gas for cold engine starts. Engine Only Runs with Choke On or Pressing Primer. If it is dirty, that can cause poor engine performance or starting problems. All popular mower engines are covered, Briggs& Stratton, Honda, and Kohler. When the engine starts, air will be sucked through the air cleaner and this will be pressurized inside the carburetor. These hollow fuel feed bolts are prone to clogging. The old one, without gas on it, did seem kind of stiff compared to this one. Like all small engines, this one requires regular maintenance, or it can develop performance problems. Yeah I remember the one you mean now. The tractor could be equipped with the following engines: Briggs & Stratton 31P677.For John Deere Model # JD- MIU1303 GY21435 MIU14395 MIU13963 lawn . All rights reserved. A fine copper wire can often be used as a pipe cleaner to loosen what you can from the oriface. Any idea what the issue could be? This creates a richer fuel condition which is just what a cold engine needs. Replace If your carburetor is corroded or very badly gummed, go ahead and replace it. If the carburetor float bowl or nut gets clogged with dirt, the engine cant work properly. I can hear the grass growing. Here is my carb. . Bad or contaminated fuel can be the other reason for the engines issue. You may freely link to this site, and use it for non-commercial use subject to our terms of use. This is a straightforward fix and might allow your mower to start. I took it off once and they seemed to move fine, and plus, wouldn't the engine not be able to pull in cleaner and what little gas? A good flexible set with a wide range of tools will pay for itself very quickly. Fuel is on. Although lawn mower small engines are simple, the carburetors are quite precise bits of kit. Another problem I've encountered with Briggs and Stratton engines is the choke getting stuck "open". Choke Off As the engine warms a little, move the choke to the fast/run position. The fact that the needle has to be turned out so far tells me that there is a problem with how much fuel is actually reaching the intake. This should hold it up. Whether you simply need to repair it or you need to replace it, these are great lawnmowers and are worth fixing. I am not sure if there is supposed to be a spring where the screw is, as it will go in all the way to the throttle. I recently bought a used 3.5 HP Briggs and Stratton. Push the tool in to compress the spring and tighten the jaws If so, is the shut-off valve open and the fuel clean? Huh. Youll find your fuel bowl behind the air filter, its a distinct bowl-like shape, and you shouldnt need to remove any other parts to gain access. So if you clean your carb and shes still not purring, swap her out. I only have the air cleaner off because that is the only way to adjust the throttle, turning the throttle plate on top of the carb. Before you take your mower to a repair shop, here are some possibilities to look into. Read jim phelps . If the fuel cap vent is clogged, air won't be able to enter the tank and a vacuum or "vapor lock" will occur. This is a guide about diagnosing a mower with a Briggs and Stratton engine that wont start. Is the spark plug fouled? Valves let air in (the intake valve) and out (the exhaust valve), pistons move back and forth pushing the air-fuel mixture to the ignition system and the piston rings keep it all sealed up tight.

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