Riding Lawn Mower Sputtering And Backfiring



USA of Grand Rapids, Mich. The return of warm weather signals lawns to come out of dormancy and spring into action. Choke is only needed for cold starts. You can always clean or replace the spark plug to be sure. Experience a cutting system that features stamped and fabricated options built with the best materials to ensure a consistent quality cut every time. You have all begun rear bagging while making ** and sometimes no way to use a side bag or just. This is a common problem that can be caused by a couple of things. Starting up a lawn mower should not generate any backfire but if it does happen, it is a clear indication of damage on the mower. Best Sellers Rank, #110,487 in Patio, Lawn & Garden (See Top 100 in Patio,. Tractor had a difficult time turning over, and even when it did, it would occasionall sputter and tend to backfire a bit (I bought it used from another owner). To test this you'll need a spark plug wrench to remove the old spark plug. Mowing the grass can be a chore for many people, and having mower problems can cause this job to become frustrating at times. Another possibility is that it's only running on one cylinder or the flywheel key is a little sheared throwing the timing off. Lawnmower has been maintained/oil changed this spring. Whether the smoke is blue, white, or black, here's how to identity and address the issue without. I thought I could fix this with a valve adjustment like on my 14. This is a guide about riding mower keeps shutting off. This is a pretty good description of a valve seat that's come loose. But mostly it misfires. She says, "I have a 2002 John Deere riding lawn mower, and always try to take good care of it, but every time I shut it off, it backfires. The app helps determine the best time to mow, communicates expert pre-mow tips, offers maintenance reminders, and provides walk-through guides. Whenever I start the mower, it seems to run fine but I noticed that after a while, it will get hot and I begin to see smoke. It takes 30 secs and sometimes longer to get it started. 250815BE Lawn Mower pdf manual download. Riding lawn mowers with small combustion engines are designed to ignite fuel vapors for power. p Kohler Command 1 cylinder which started backfiring after I replaced the air filter. Kawasaki fh500v oil leak. Backfire in engines is caused by simple chemical malfunctions that can be easily rectified. Start by entering your model number in the search box. Hi all, I am having an issue with my craftsman riding mower, model 917274391. I pump the primer 5 times, and it starts every time, but just as the engine is reaching normal rpms, the engine dies. , announced a voluntary recall of about 210,000 Lawn Mower Engines. Parts Lookup. Then choose from our list of common symptoms. When you have checked all the possible causes listed and you are still experiencing the problem, see your John Deere dealer. I have a 17. Toro warns that if you use unapproved gasoline in your lawnmower and the fuel system, carburetor and/or engine is damaged, you may not be covered by the warranty. I have a Kraftsmann 550 series push lawn mower with Brigg and Stratton engine that runs for about 10 minutes and then sputters and dies. Review of Our Mtd Riding Lawn Mower. Starting problems with your lawn mower fall into 2 basic causes: fuel problems and ignition problems. Riding mower won't start? Throughout the season a lawn tractor or snow blower requires engine maintenance. Mower owners may need to reflect if the mower had run over some huge obstacle during its operation that could have damaged some components to cause the backfiring. 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. I'll try to explain everything to the best of my ability but I'm only 16 so my knowledge on the topic is very minimal. This is called running rich. 5 HP B/S engine backfiring& will not start? Cut grass for about an Hr. Based upon the data you've given thus far I would remove the float bowl and blast out all of the jets, in particular your pilot jet. Lawn Mower/Lawn Care, Garden, 31 replies Gas vs Electric lawn mower, Garden, 42 replies What kind of Lawn Mower do you Have, Garden, 6 replies Need a recomendation on a lawn mower, Garden, 22 replies Need information regarding difference between Lawn Mower Blade, String trimmers and Lawn Edger. You may have to turn the idle out another ¼ turn to smooth out engine operation. My friends says it won't hold up in my puller. All it takes is one to many backfires to shear the key. Take care to avoid close proximity to a backfire and the motor until you've determined the cause and fixed the problem. I fixed the pull cord, but it wouldn't start, so after looking on the internet and reddit I put in new gas, changed the spark plug, checked the oil. We here at this Briggs and Stratton part posting site really know that you all simply adore your Briggs mowers. What is happening is; when you shut the ignition off, something, somehow is causing a couple of the cylinders to keep igniting, which in turn keeps the engine running, although "sputtering" pretty badly. New riding lawn mower has black smoke coming from engine and backfires when starting? I bought a new riding lawn mower about a month ago and tried to use it for the first time a few days ago. 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. Under load the engine sputters and backfires. No backfires. But mostly it misfires. i would say the carbureter has let fuel get into engine and has locked up engine. 5 acres and have varied terrain and light-to-moderate yard tasks. I replaced the gas and there was no improvement. Carburetion Troubleshooting Detail Reference Guide A Air Cleaner Manifold Problems involving the air cleaner manifold are normally related to loose mounting screws and/or damaged or leaking gaskets. You might also find the help you need by checking the common symptoms and solutions for riding mowers and tractors. It also loses power. I have a Murray LT1000 riding lawnmower with 16. Motor stalls have various signs in advance of the stall. Cub Cadet Backfiring. In general, repaired what needed to be fixed. So what is a backfire, what causes it, and how can you stop your lawn mower engine from backfiring? What is a backfire?. You might also find the help you need by checking the common symptoms and solutions for riding mowers and tractors. I have a Murray LT1000 riding lawnmower with 16. Have a 2004 Craftsman LT1000 Lawn Tractor with a Briggs & Stratton 31H770297-E1 Engine. New to the forum and pretty much confused about my mower. Whether you've got a Toro lawn mower, a Briggs and Stratton lawn mower, or one of the other popular brands, the last thing you want once winter finally lifts and spring has sprung is a lawn mower that won't start. FIXED!! - BRIGGS AND STRATTON (NIKKI) CARB - surging, misfiring, low power, turns off. Lawn mower manufacturer Toro suggests that you use ethanol-free gasoline. What could be causing my lawn mower to rev then sputter? you have about sears riding lawn mowers and electric clutch problems? if my lawnmower backfires when. Riding mowers may not be tuned to burn this type of fuel properly, which can result in occasional backfires and a power loss. you may have gelled fuel in their. When your mower starts and warms up, move the throttle lever off the choke position. User manuals, Craftsman Lawn mower Operating guides and Service manuals. We have a year old Craftsman 4. HOW TO FIX A RIDING MOWER THAT SMOKES & STALLS CRANKCASE FILLED WITH GAS CARBURETOR CLEAN OIL CHANGE. It sputters and/or dies when ascending hills especially, after about 10 minutes of use. The distributor is a side mount,and the copper peice where the condenor connects broke when I was fiddling around there. Odor smells rich. Sometimes engine knocking can be caused by the engine not firing in sync. I had the same problem; The first 2 years the engine ran fine and then the third year it started backfiring, so I put a new carburetor on my engine and the same thing happened. Why does my engine spit or backfire? First off, you need to determine whether it is backfiring out the exhaust or back up through the carb. My Lawn Boy Zero Turn Mower is sputtering and backfiring. Several things can cause stalling. However, when I refilled it the sputtering continues (this happened three times). Lawnmower has been maintained/oil changed this spring. Same thing. I adjusted the valves and rebuilt the carb last seaon, but it didn't change anything. It takes 30 secs and sometimes longer to get it started. I am using fresh auto fuel and follow the manual instructions. I did a little research for you at Managemylife. From what I've read this is a pretty typical issue and is solved by replacing the head. Show me why riding lawn mower won't keep running If it starts right up and the engine sputtering ceases. i always tuck it out of way. Simply scan the lawn tractor's barcode to get custom information. Large mowers (those which carry you) may be of either the rotary or reel type, usually gasoline or diesel powered but some electrics have been produced. you'll know a backfire when you here it, because your bike will sputter and idle roughly, then you will hear a very loud BANG! that sounds like a gun shot. In those days, once a year they had a free trash day, where the city would come around with loaders and dump trucks to take away whatever you put curbside. Yet, you see 10 year old, 20 year old, and even older outboards and mowers/generators/etc. Original review: Sept. The experts at Mowers Direct discuss the issues that can arise using gas with mowers. Engine Specs. Cub Cadet Backfiring. Could be a lot of reasons. See more ideas about Lawn mower repair, Lawn mower and Engine repair. For information on riding mowers, lawn tractors, garden tractors and estate tractors (also known as compact diesel tractors), see the Small Tractor FAQ. 5hp Ohv Briggs & Stratton engine. Riding Mower and Tractor Common Questions These common questions about riding mowers and tractors are the ones our experts hear the most often from our customers. It smooths out with a bit of choke, but other than that, it does just what you have heard. But mostly it misfires. why would my exhaust manifold be glowing red hot? - I have to agree with both points Clogged cat Plus an additional reason they got clogged, to much fuel aka Rich, if it's Immediate running rough it's not the O2's they don't turn on till operating temp and since headers and manifolds rarely ever clog loosen your pre cat bolts spread the pipe 1/4 inch or so and see if there is an. , announced a voluntary recall of about 210,000 Lawn Mower Engines. The return of warm weather signals lawns to come out of dormancy and spring into action. Even a riding lawn mower is subject to these operational issues although it is more powerful than hand mowers. New to the forum and pretty much confused about my mower. why does my riding lawn mower engine backfire? Answer: May 31, 2009allan1859 asked: It was put away for the winter. Learn why your Riding Mower and Tractor Runs rough or misfires at Sears PartsDirect. Toro warns that if you use unapproved gasoline in your lawnmower and the fuel system, carburetor and/or engine is damaged, you may not be covered by the warranty. Late in the year last year it started spitting, sputtering and backfiring then would die. From what I've read this is a pretty typical issue and is solved by replacing the head. The neighbor's Craftsman was in the pile after one of the backfiring episodes, so it became mine. Why Does My Lawnmower Sputter? My Car Sputters when i Give it Gas Faucets Sputter Air Lawnmower Repair Lawnmower Maintenance My Lawnmower Will not Stay Running Used Riding Lawnmowers Car Sputters when i Accelerate. How to Repair a Four Stroke Lawn Mower. Our riding lawn mowers are designed to give you unmatched strength and durability, and they're packed with performance features you'll appreciate. When you have checked all the possible causes listed and you are still experiencing the problem, see your John Deere dealer. Sometimes a few in a row. Q: My lawn mower has been running sluggishly lately and is harder and harder to start. If the engine is sputtering and backfiring, turn out the idle screw ¼ turn to increase the amount of fuel to the venturi. I thought I could fix this with a valve adjustment like on my 14. Despite these, it continues to run, akin to a motor about to to conk-out, but it is sputtering. While it’s not dangerous, it can be a symptom of other problems, and should be addressed. Mark, On the 18HP twin V engines the fuel pump on the carb is no longer available. Briggs INTEK QUICK FIX ~ RIDING LAWNMOWER that TURNS OVER but WILL NOT START. 5 acres and have varied terrain and light-to-moderate yard tasks. Riding mower won't start? Throughout the season a lawn tractor or snow blower requires engine maintenance. why would my exhaust manifold be glowing red hot? - I have to agree with both points Clogged cat Plus an additional reason they got clogged, to much fuel aka Rich, if it's Immediate running rough it's not the O2's they don't turn on till operating temp and since headers and manifolds rarely ever clog loosen your pre cat bolts spread the pipe 1/4 inch or so and see if there is an. The return of warm weather signals lawns to come out of dormancy and spring into action. Riding Mower and Tractor Common Questions These common questions about riding mowers and tractors are the ones our experts hear the most often from our customers. Under load the engine sputters and backfires. 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. that are still running well despite using ethanol. It only runs for 1-2 seconds then dies. Despite the many advantages of zero-turn mowers, there are some downsides to consider. We make fixing things easier!. Craftsman riding lawn mower ignition coil/timing problem? I have a 2005 craftsman 18 hp riding mower with a briggs and stratton motor (model 31H777). However, when I refilled it the sputtering continues (this happened three times). What could be causing my lawn mower to rev then sputter? you have about sears riding lawn mowers and electric clutch problems? if my lawnmower backfires when. sluggish when running with blades engaged. New to the forum and pretty much confused about my mower. The vertical-shaft gasoline engines range in horsepower from 20 to 25. E force in lawn mower will not start and backfires when revving 18 hp briggs and stratton misfire won t start problem fixed i have a deere la125 tractor it backfires and will not start help what is lawnmower paing why snowplow and bulldozer why is the riding lawn mower backfiring review insute why does my lawn mower backfire and how can i stop it. I have a 15 h. I have replaced the fuel filter, air filter, spark plug with the proper gap, and changed the oil too. Never hesitate to consult your owner's manual or take your mower in to the shop if you do not feel comfortable making any of the repairs yourself. 12 hp Briggs and Stratton riding mower engine trouble My uncle was using it when it stalled and it hasn't started since. I thought I could fix this with a valve adjustment like on my 14. Runs and mows great. Belts Index. Briggs and Stratton Engine Surging, Stalling & Backfiring fix (parts used below) KOHLER POWERED CRAFTSMAN RIDING LAWN MOWER / GARDEN TRACTOR / LAWN TRACTOR Surging Problem On A Husqvarna. why does my riding lawn mower engine backfire? Answer: May 31, 2009allan1859 asked: It was put away for the winter. Browse our inventory of new and used JOHN DEERE 318 For Sale near you at TractorHouse. I have a problem that just started a couple of weeks ago with the lawn mower started sputtering, burping fuel out of the carborator,and then backfiring after running about 15 to 20 minutes. No backfires. Over the last month (I only use it about 1 per week) I've noticed that under a heavy load, such as stopping on a hill with the blades engaged and then starting to go up the hill again, the engine will sputter a little. Riding mower blades go out of sync - hit each other [ 6 Answers ] I have a 11 HP Craftsman riding mower. Find the correct Kawasaki replacement fuel pump you need below. it will after a while and. 5hp Ohv Briggs & Stratton engine. I had the same problem; The first 2 years the engine ran fine and then the third year it started backfiring, so I put a new carburetor on my engine and the same thing happened. Noticeably, when the fuel is about to be fully consumed the motor runs "normal". I have a Briggs v-twin that is in a craftsman DLT2000. Start by entering your model number in the search box. The quad runs absolutely perfect for the first couple of minutes. Under load the engine sputters and backfires. In those days, once a year they had a free trash day, where the city would come around with loaders and dump trucks to take away whatever you put curbside. Craftsman Lawnmower Timing and Carburetor Issue. Knowing what to look for will help you prevent a ruined mower. When mower gets to thicker grass it starts to bog then starts back firing and this causes the air filter to fly off and it dies. Browse our inventory of new and used JOHN DEERE 318 For Sale near you at TractorHouse. Toro warns that if you use unapproved gasoline in your lawnmower and the fuel system, carburetor and/or engine is damaged, you may not be covered by the warranty. A: If this has the same transmission as the 782 Cub Cadet, that is a very good transmission This transmission will hold up fine in tractor pulling. To test this you'll need a spark plug wrench to remove the old spark plug. Have a 2004 Craftsman LT1000 Lawn Tractor with a Briggs & Stratton 31H770297-E1 Engine. John Deere popping and sometimes backfires when idling Hi Everyone, I have a John Deere 155c with the Brigg and Straton engine that has a problem I can't seem to track down. Experience a cutting system that features stamped and fabricated options built with the best materials to ensure a consistent quality cut every time. Learn how to determine if you have a 2-cycle engine and what the best engine oil mix is in this Briggs & Stratton FAQ. My mower won't start. Here are the most common reasons your Cub Cadet lawn mower starts then stalls - and the parts & instructions to fix the problem yourself. got any suggestions ?. Riding mower won't start? Throughout the season a lawn tractor or snow blower requires engine maintenance. Here are some thoughts on getting a none running bike, running. I adjusted it to about the width of a business card and ran pretty good except for having a backfire and sputtering out in the middle of the pasture :Happy: Adjusted it further and got no spark,but some smoke pouring out the exhaustguess that was too. John Deere Ignition Module - M133019-John Deere Ignition Module Fits models: STX30 STX38 STX46 L110 LT133 LT150 LT155 LT160 LTR155 LX173 LX255 LX266 SST15 GT225 Sabre 17. However, this process is still relatively simple, so follow. I thought I could fix this with a valve adjustment like on my 14. 75 L-Head engine on it. This is called running rich. Get Details On Lawn Mower. Get a small piece of copper wire that will fit through the jet and make sure you don't have blockage. For information on riding mowers, lawn tractors, garden tractors and estate tractors (also known as compact diesel tractors), see the Small Tractor FAQ. An engine backfire happens when fuel emerges from the engine, and bursts into flame. Sometimes, too much fuel is delivered to the combustion cylinders for a given amount of air. My Lawn Mower Won't Start? 10 Top Troubleshooting Tips for Small Engines. Take it with you to our local lawn mower service/repair shop to get your replacement spark plug. i tilted my riding lawn mower (murray) on its side for 20 minuts removed the blade,sharpend the blade and then put it back on. Find answers with FAQs from Simplicity Mowers!. Mower would not start ,but would keep backfiring. Riding mower won't start? Throughout the season a lawn tractor or snow blower requires engine maintenance. What does it mean when a lawn mower backfires? Most riding mowers have 12-volt batteries, too. Riding lawn mower sputtering and backfiring?help? I have a craftsmen riding lawn mower and have to run it at full choke, why?? More questions. I acquired my lawn mower this year from a family member who only used it once, then the dog chewed off the pull cord, and it sat for two years. 5 Murray riding lawn mower engine runs well when I engage the blades it spits and sputters and starts backfiring what could be the problem Murray Garden Open Questions:. Black smoke is a sign that the engine is getting too much fuel or not enough air, c heck out "How to start a lawn mower". 017" and intake valve to. What could be causing my lawn mower to rev then sputter? you have about sears riding lawn mowers and electric clutch problems? if my lawnmower backfires when. No Offense But Your Correct And Incorrect Yes Higher Octane Is More Stable But Also A Higher Octane Means The Fuel Will Burn Cooler You Will Get More Power With a Higher Octane I Know This Because If I Run 87 In My Car I Get 400Hp If I Run 110 octane I Get 475-500 (Depending On The Weather) Your Correct But U Need To Re Think What U Say B4 U Teach People The Wrong thing. Get shopping advice from experts, friends and the community! Craftsman 26 horse, Kohler SU735S engine. Get a small piece of copper wire that will fit through the jet and make sure you don't have blockage. Every once in a while it will run normally. I'll try to explain everything to the best of my ability but I'm only 16 so my knowledge on the topic is very minimal. Yes I know, this is ve THQ The Lawnmower Man. disconnect battery and remove spark plug andthen rotate engine. Before you have a heart attack pulling on the rip cord, you'll want to check the fuel, as well as the lawn mower carburetor. just take the bowl off of the carb and clean out the bolt that holds it up. If ethanol was destroying engines every day, all day, the repair shops would be overrun with blown up engines, be it a small engine repair shop or marine repair shop. THE GAS TANK IS TO LOW FOR THE GAS TO FLOW OUT OF THE TANK TO THE CARBURETOR. pdf), Text File (. If you see black smoke coming from the exhaust, the fuel mixture is too rich. backfire is a result of half burned, hot exhaust finding oxygen to finish burning. Find the correct Kawasaki replacement fuel pump you need below. It has been a while. When started it did a lot of sputtering but smoothedout by pulling the choke out a bit. repaired riding lawn mower and chain saw. Briggs and Stratton Engine Surging, Stalling & Backfiring fix (parts used below). The only time I have ever heard a knocking sound come from a car engine is when the oil was low so you should check to make sure there is enough in your lawn mower. I cleaned fuel tank and changed fuel pump. She says, "I have a 2002 John Deere riding lawn mower, and always try to take good care of it, but every time I shut it off, it backfires. When your mower starts and warms up, move the throttle lever off the choke position. I have a craftsman mower with a B&S 6. If ethanol was destroying engines every day, all day, the repair shops would be overrun with blown up engines, be it a small engine repair shop or marine repair shop. Take it with you to our local lawn mower service/repair shop to get your replacement spark plug. How To Properly Set the Governor On A Small Engine - With Taryl. It started surging a few minutes after and backfiring (pre detonation maybe?) and now it wont run without the up and down surging/popping. I just bought a YTH22V46. backfire is a result of half burned, hot exhaust finding oxygen to finish burning. 5 Murray riding lawn mower engine runs well when I engage the blades it spits and sputters and starts backfiring what could be the problem Murray Garden Open Questions:. Sometimes a few in a row. Find answers to common small engine, troubleshooting & maintenance, DIY repair and parts questions throughout our FAQ section. Noticeably, when the fuel is about to be fully consumed the motor runs "normal". The only thing that is at all hard about it, it is a heavy lawn mower, and when mowing under trees where I must pull the lawn mower back and then push it forward repeatedly because of branches hanging down, it is a little difficult. View and Download Snapper 250815BE parts manual online. If you are looking for Engine Sputtering And Stalling you've come to the right place. Backfire in engines is caused by simple chemical malfunctions that can be easily rectified. 75 L-Head engine on it. Lawn Mower Quit Suddenly and Won't Start When I was a teenager I royally FUBAR'd a lawn mower by running over a stump and damaging the blades. Sputtering Under. I had the same problem; The first 2 years the engine ran fine and then the third year it started backfiring, so I put a new carburetor on my engine and the same thing happened. i always tuck it out of way. A leaking gasket allows unmetered air to enter the intake system. 1 Get a new plug 2 Drain oil 3 Drain gas 4 Get aerosol carburetter cleaner and clean carburetter 5 Make sure fluid plugs are in place, replace fuel filter 6 Fill oil to specification 7 Fill gas 8 Put in new plug (with correct gap) Start mower and run for 10 minutes (meanwhile check for leaks). It started easily and ran fine; but the next time I used the mower, it was hard to start and ran poorly again. Once started, a lawnmower typically keeps running until you power it off. Repairs Index. If you have this problem with your truck engine, or you find that it sputters or fires fuel into the air, then you may have to troubleshoot the engine in order to work out the cause of your backfire. If a lawn mower engine misfires, it could be an issue with the spark plug, valves, or ignition coil. Info on riding lawn mower I just got: lawn chief Quality farm & country riding mower JD LX172 Belt Adjustment JD 265 hard to start gearbox oil jd lx 172 I'm stumped Murray 42591X8B riding mower manual Scotts L2048 Hydro No foward / reverse / blade engagement sears dya 4200 riding lawn mower Plastic mystery part Next pic of Briggs Governor. Used Cub Cadet RTZ50 VT Zero Turn Riding Lawnmower for sale in Alton - Cub Cadet RTZ50 VT Zero Turn Riding Lawnmower posted by JonnyBlaze in Alton. It takes 30 secs and sometimes longer to get it started. 542HS Scotts L17. I have a craftsman mower with a B&S 6. I just bought a YTH22V46. I figured. txt) or read book online for free. Re: Cub Cadet GT2521 sputtering. Here are some thoughts on getting a none running bike, running. I fixed the pull cord, but it wouldn't start, so after looking on the internet and reddit I put in new gas, changed the spark plug, checked the oil. Get a small piece of copper wire that will fit through the jet and make sure you don't have blockage. Lawn Mower/Lawn Care, Garden, 31 replies Gas vs Electric lawn mower, Garden, 42 replies What kind of Lawn Mower do you Have, Garden, 6 replies Need a recomendation on a lawn mower, Garden, 22 replies Need information regarding difference between Lawn Mower Blade, String trimmers and Lawn Edger. This is a pretty good description of a valve seat that's come loose. How to Repair a Four Stroke Lawn Mower. After we help you discover the root cause of your problem, you can select the parts you need. that's not backfiring, that's just popping. Now, it kinda sputters or backfires and jerks a bit when I accelerate from a stop, then it runs fine until I try to get above 35 mph, when it does it again, but worse. It has been doing this off and on all summer. 9108474-John Deere F510 F525 Residential Front Mower Service Repair Workshop Manual Download (1) - Free ebook download as PDF File (. You do have sufficient fuel in it …correct? Fill the tank. I have a Yard Machines by MTD lawn mower. Engine Specs. Then I go ok well I will trade it to this guy for a lawn mower and $30 so I do that and I get a pretty. Consumer Product Safety Commission and Health Canada, in cooperation with Kawasaki Motors Corp. Radio interview source: Greg Weekes, Group Product Marketing Mgr, Riding Lawn Equipment, John Deere. Our riding lawn mower runs fine when it is in normal gears however if you put the mower deck down to cut it starts sputtering and backfiring. Always consult the owner's manual for any mower before attempting repairs at home. This recall involves Kohler Courage twin-cylinder engines sold with three brands of lawn tractors: Husqvarna, Cub Cadet, and Troy-Bilt. Updated on May 24, 2019. You will need to put a good fire extinguisher where it is real handy, because the things you are doing can spark, backfire, and burn. Hi all, I am having an issue with my craftsman riding mower, model 917274391. Engine Disclaimer: The engine horsepower information is provided by the engine manufacturer to be used for comparison purposes only. When mower gets to thicker grass it starts to bog then starts back firing and this causes the air filter to fly off and it dies. I put on the old carb. The first one had a problem with the "gas pedal" but Home Depot swapped it out for another and it's working like a champ!. Sputtering, Quitting Engine. Repairs Index. We make fixing things easier!. The tractor won't start at all. I pump the primer 5 times, and it starts every time, but just as the engine is reaching normal rpms, the engine dies. I'm looking to find out if any thing can be done to the pump to beef it up so it can be used in my pulling lawn mower. My lawn mower was giving me the worst time tonight. Now, it kinda sputters or backfires and jerks a bit when I accelerate from a stop, then it runs fine until I try to get above 35 mph, when it does it again, but worse. It is important to learn how the mower works and how to fix a lawnmower at home. The distributor is a side mount,and the copper peice where the condenor connects broke when I was fiddling around there. Hour meter quit working when the new motor was installed. Forum discussion: Hi All, At the end of last fall I decided to use my lawn mower to mulch the leaves instead of raking them. If I let it sit for a while, I could restart the mower, but it would soon splutter and die again. Based upon the data you've given thus far I would remove the float bowl and blast out all of the jets, in particular your pilot jet. Repairs Index. Q: My lawn mower has been running sluggishly lately and is harder and harder to start. When you have checked all the possible causes listed and you are still experiencing the problem, see your John Deere dealer. Replaced the air filter and it would run, but after warming up, under load would loose power, backfire through the carb and finally cut off. What does it mean when a lawn mower backfires? Most riding mowers have 12-volt batteries, too. 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. Black smoke is a sign that the engine is getting too much fuel or not enough air, c heck out "How to start a lawn mower". It seems the longer I let it sit there and cool down, the longer it would run it the next time before stalling. This is called running rich. Lawn mower manufacturer Toro suggests that you use ethanol-free gasoline. I thought I could fix this with a valve adjustment like on my 14. I Have a Craftsman LT4000 Riding lawnmower with the kohler cv14s engine. You do have sufficient fuel in it …correct? Fill the tank.