Bad John Deere Mower Gas Cap. When the cap is unable to vent allowing the fuel tank to maintain the correct pressure, your riding mower can die after it has been running. As you mow your lawn the engine consumes fuel from the tank. Once the gap is set, install the plug and secure it firmly with the socket wrench. "Love the flexibility of the app to add everything in the home and garage. Im covering it first because the gas cap is really easy and fast to check. Gas tank was fully intact. I headed out to the garage intending to check the gas cap vent first. Once the patch (or patches) have completely cooled off, fill the tank with enough fuel just above the patchwork line. The other day it died about an hour into a cut. Checking spark isnt difficult, and its all covered below. Welcome to the best mower slash engine forum on the internet. 5. When too much oil is added to your riding mower, several problems can develop if the oil level isnt corrected. Startup the lawnmower to warm up the oil allowing for easier drainage. A plugged filter cannot only cause your mower to run sluggishly and shut down, but it can also cause costly internal engine damage. This may include problems where your riding mower is smoking, cutting unevenly, losing power, not starting, leaking fuel, and more. It takes about 8 pulls to start and makes a lot of rattling noise - after about 10 min sputters and dies. Cleaned that out and made sure the lines were cleared to the carb. Here are the steps to take to replace the oil in your lawnmower. Attempt Start Simulate engine start (Helper pulls on the cord) while you view the spark plug. Remove the carburetor bowl and clean all parts thoroughly. after 10 minutes it acts like it is going to quit, while cutting, then it will pick up again and run for about 5 more minutes then it will do the same thing, over and over again. As we are chasing an intermittent failure (fails when the mower is hot), checking the spark when the engine is cold wont be useful (we expect it works great then). Overfilling the engine crankcase with oil will cause pressure to build in the crankcase. Ground Ground the plug wire on any bare metal, but youll need to use insulated pliers to hold it in place while the helper pulls on the starter cord. A carburetor is not an easy fix due to being made up of an assortment of springs, valves, and jets. Yes took it apart and cleaned everything. It does start again but does off after about 1 minute after that. It cant get the air or fuel needed to continue to run. Probably going to replace the carb this weekend. I hope this will take away a little bit of your frustration and help you get back to mowing again. If you need more detailed instructions with pictures, check out this post, Mower hard to start when hot it covers the replacement procedure in full with pics. Repair information and troubleshooting for Craftsman-brand riding lawnmowers. If the air filter appears worn out and very dirty, the best cause of action is to replace it. Wiring harness wired wrong. Anyway, if youve got a makeshift gas cap fitted, its likely your problem. Use the screwdriver to gauge the piston's range of motion (image F below). If there is none, replace the component with a brand new one. Follow all safety instructions provided in your equipment operators manual prior to diagnosing, repairing, or operating. Thats when well check for spark. No spark means the armature has failed; go ahead and order a replacement. Once you find a section that is clogged, remove the line and spray carburetor cleaner in the line to loosen the clog. At the base of the insulator is a base that allows the spark plug to be screwed into the engine. I just bought the mower this afternoon used. I have cleaned the carburetor . Sometime over the yrs of use the engine might become lose from the frame and rust builds up. The filter shows no fuel in the chamber when it dies. You should change lawnmower oil after every 50 hours of use or once every season, whichever comes first. If your lawn mower starts, runs briefly, then dies these are the four most common reasons that's happening: Dirty carburetor / clogged carburetor bowl. If the lawnmower bag gets too full, the lawnmower will shut off. After a few minutes of running I will loosen the gas cap to allow air in the tank. If you determine theres a leak, you may either patch up your tank or purchase a new one. Full bag shuts off mower. Remove and quickly replace your drain plug so you dont allow too much oil to drain. By Eric Blankenburg. The spark plug on your lawnmower should be replaced at least yearly to ensure trouble-free operation. Your engine requires clean air to run. Hold your filter up to the light. Sometimes the fuel lines can swell up and restrict fuel flow. Remove Remove the spark plug wire (twist and pull) and also the spark plug. Typically an operator stops the mower to empty the grass box, and the mower wont restart. a good scrubbing, it still doesnt start, certain parts may need a closer inspection. A fuel siphon works great for this. Works fine now. The spark plug is really a very simple device. While on the face of it, this seems like a coincidence. DoItYourself.com, founded in 1995, is the leading independent home improvement and repair website. The fuel gauge never worked, but I pulled out the sending unit today to see if I could fix it. Occasionally a cracked ceramic insulator can allow the center electrode to ground to the engines frame, also causing the mower to die. If you dont want to tackle the job, bring your mower to a small engine repair shop to be cleaned or rebuilt. If the engine runs rough after hitting a rock or stump, check the flywheel key-a damaged flywheel key will disrupt the ignition timing. Has happend to me about 10 yrs ago with a different tractor. Reason 4 . The mower is a 2006 Simplicity Javelin RZT2044 with about 125 hours on it. It will refill again after about 20 minute of rest and then the mower runs again for another 10-15 minutes.I have cleaned out the tank and checked the few line . Tractor will restart but backfires through muffler and will stall again. I have a problem with my WeedEater mx550 Gas Trimmer. Lawn mowers are considered by many as simple machines, but that does not mean they are always easy to fix. 10. Your riding lawn mower requires unleaded gasoline with a minimum octane rating of 87 and a maximum ethanol content of 10 percent. Ryobi 40v mower cuts out after a few seconds. With the metal spatula, apply light pressure to set the patch in place and remove bubbles that may surface. This is the info I can find on the mower. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. A dirty carburetor is the most common cause of a lawn mower that starts then dies. Glad to help you. I found a thread on speed adjustment here on this website. As you mow your lawn the engine consumes fuel from the tank. Murray Lawnmower runs a few minutes and stops. Keep the pressure at a minimum to ensure that the tank holds its form and shape. Several other possible things might be . This post may include affiliate links. Plug should be gapped at .030", not .013". numbers off of the tag. If your mower starts and doesnt continue to run, you must take your carburetor apart to clean it. (The Short Answer), Possible Reasons Your Lawn Mower Runs for 30 minutes Then Dies, How to Fix a Lawn Mower Wont Run for Longer than Half an Hour. . I've worked on all types of mechanical equipment, from cars to grass machinery, and this site is where I share fluff-free hacks, tips, and insider know-how. Insert a narrow screwdriver into the spark plug hole and touch the piston. Once the bowl has been removed, check for debris and build up. Now it runs fine. 2022 LawnMowerForum.com. Most problems that will cause a John Deere lawn mower to stall after 20 minutes occur due to the distribution and rate of flow in the fuel and air systems. Remove the dipstick and immediately place it in a small vessel to catch the dripping oil. cleaned up the entire engine(outside) and all over frame and mower panel. Surging in a governed engine is always fuel : air ratio that is too low to sustain a constant speed . No matter what the reason is for the fuel in your lawn mower to be degraded, fuel quality issues are generally the easiest to fix. If your lawn mower still runs for a while and then dies with the fuel cap off then check for blockages in the fuel lines. Center the plastic as best you can and continue applying heat until you soften the patch as well. I have a crafsman 18.5 42" cut riding lawn mower,five years old, same thing, starts great, runs great, cuts great, for about ten minutes, then misses and quits. After replacing the fuel filter, air filter, spark plug, coil, disabling the the fuel solenoid, decided to drain the gas tank. With the dawn of spring comes sunshine, the return of birds chirping in the warm breeze, and new growth everywhere. This typically happens after a short period between ten and thirty minutes and also depends on factors like weather and gas tank fuel level. This gap is where the spark is produced. May 2, 2010 / cub cadet stalling after ten minutes running - recovers when i turn off the blades #6. After cleaning the spark plug, check for visible signs of improvement in your lawnmowers performance. With our Fix app, you always have a personalized repair guide on-hand. Carefully inspect the tank and let it sit for ten minutes to establish there is no leakage. It shuts down and then takes a few minutes to slowly equalize the pressure before it'll start again. If you are unable to fix your riding mower or dont want to attempt a more complicated repair, have your local lawn mower dealership or repair shop for assistance. Our DIY tip for this would be to use a twist tie from your loaf of bread to clear the holes in the bowl nut. Drive pulley against engine PTO face. A clogged carburetor on a lawnmower could cause it to stall or act sluggish. Unplugging the spark plug before removing the carburetor bowl has two main advantages. To clean your air filter, remove the filter from the filter housing. My 21 HP Briggs & Stratton would run for 5 minutes and then cut off as if you turned the switch off. In fact, virtually all other problems mentioned in this guide are at least somewhat connected to the carburetor and flow of fuel. Have to wait 30 minutes and can start again, but the outcome will be the same. Once it hesisates i stop, put the emergency brake on, and open the handle bars out as if i am parking the mower, it then regains a little life, for a . All mower gas caps are vented, which basically means the mower gas tank must allow air to enter the tank to replace the fuel that leaves. There are a number of possible causes why a lawn mower starts then dies. Menu Ask a Question Share a Post Account Search. Also, you need to be careful not to overtighten this bolt. I have an engine here. This electrode is set at a specific gap between it and the center electrode. Checked cap to the gas tank. #1. I believe it to be a fuel or air problem. Follow our repair and symptom guide to help you fix this. F725. If it does shut down, there is a good chance the problem is in your fuel cap. Here are the steps to follow to patch up your lawnmower gas tank. Let completely cool off, then runs for another 15-20 minutes. Inline fuel filters will be at the discharge to the fuel tank. When i Start the engine it i have a 5 hp briggs that keeps cutting off after two or three minutes of runnin Cars, SUV's, Vans, Trucks, RV's, Boats and Gasoline Outdoor Power Equipment, Outdoor Gasoline and Electric Powered Equipment and Small Engines, Mower Engine Runs for 10 Minutes and Stops, Toilet Runs Every 5-10 Minutes for 30 Seconds, Tecumseh 5HP VH50 Lawnmower engine troubles. Solution: Clean around your fins and replace any broken fins. Your email address will not be published. Thanks for the replies. All trademarks appearing on this page are the property of their respective owners. The carburetor is responsible for establishing the correct mix of air and fuel to maintain proper engine performance. It will run on starting fluid, so it has to be a fuel problem. Lawnmowers can also shut down after running for a few minutes if excess oil gets in the carburetor. The mower is a 2006 Simplicity Javelin RZT2044 with about 125 hours on it. Here are the steps to follow. denny. When this hole is not clear, fuel cannot flow correctly. I have a Kohler Command CV491 17.5 HP in a John Deere L110 residential riding mower that begins surging after about . Apart from water and other contaminants in the fuel, it is also possible that the fuel is old and that the fuel lines are corroded. If you leave your choke on after your engine starts and heats up, your engine will shut down when it continues to receive more fuel and less air. This will stop the fuel from flowing to the carburetor. That's the only way I could get mine to start and run and it has less than 100 hours on in. A clogged or worn-out filter dramatically reduces the performance of your lawnmower. When the spark plug heats again the expansion from the heat can cause the internal electrode to lose continuity and the mower will die. After about 10 or 15 minutes, the vacuum will become strong enough that fuel will stop flowing to the carburetor and the lawnmower will die. You are using an out of date browser. I have a John Deere LX178 with a 15HP Kohler-John Deere engine. Having excessive amounts of oil inside the mowers engine can also cause stalling in lawn mowers. Solution: Regularly scrape your mower deck and sharpen your blades. This increased pressure can cause your riding mower to overheat and die. Spark plugs are inexpensive and the easiest way to test for a bad plug is to simply replace it. Attempt start. Good luck. The ceramic insulator also isolates the center electrode electrically from the spark plugs base. JavaScript is disabled. Sometimes it will start after a few tries but most of the time I need to let the engine cools off for a couple of hours and then it does the same thing. Cleaned carb three times. Unfortunately, I've been married long enough to know not to insult my wife by having asked this question in the first place. Your gas cap can become plugged and no longer work correctly. To check, simply start the lawn mower as you normally would and observe. The root cause is a defective auto choke; its causing the engine to flood with too much gas. Also check spark after it dies. Hoping theres not an issue with the coil as well? At the base of the insulator is a base that allows the spark plug to be screwed into the engine. Probably going to replace the carb this weekend. As long as there is enough oil in reserve, the issue almost always lies in the gasoline. I have the manuals in hand. Armatures commonly fail in two ways, they stop working, and your mower wont start, or they work when the engine is cold but fail as the engine heat soaks into the windings of the armature. If, on the other hand, the mower still wont start, youll need to check the mower for spark. after about half hour it will start up and run for a little while. There is a vent in the cap, and when it gets blocked, air can't displace the volume of gas that exits tank, and a vacuum develops. Riding Mower Carburetor is Dirty. Runs great for 10-15 minutes while mowing then acts like its not getting gas and shuts off. They arent repaired. The base also has a second electrode attached to it. This is a guide about riding mower keeps shutting off. If your lawn more typically starts after it has been stored a while but then stalls after a few minutes you may find this helpful Help please!!! This has become more frequent over past 3 years. Halfway through the yard work, she stalls. Wiring harness incorrect. Solution: Identify a bad ignition coil using an ohm meter to check for a break in continuity. Dont allow any dirt to fall into the air intake and wipe out any dirt remaining in the housing. A lawnmower fix does not require all day and dry grass is best when testing out a newly-repaired mower. Troubleshooting efforts to date: Emptied and cleaned gas tank. Taking apart the carburetor is a task with multiple steps. If you take proper care and maintenance of your lawnmower, it should last you a good ten years or more. Have Kohler 15hp in Cub Cadet Mower. Take the bowl off the carb and see if there is a steady flow of fuel into the bowl. Once the plug is in place, hand-tighten, then use a ratchet to secure without over-tightening. What the hell, take the gas cap off and see what happens. The gas flow gets too little for the engine to run. Most wont have a feeler gauge and thats OK; you can use a business card to set the gap. D. The filter shows no fuel in the chamber when it dies. After about 10 or 15 minutes, the vacuum will become strong enough that fuel will stop flowing to the carburetor and the lawnmower will die. Armatures are solid-state components. Safety switch malfunctioning. MacGyver didn't get it right every time. that black piece was loose enough to float up and shut off the fuel while running. If the volt meter reads 12 volts, replace . Gasoline can begin to break down and become less effective as soon as 30 days after purchase. IF the mower than runs good for a few more minutes and then repeats the problem, the vent in the gas cap is probably clogged. I bought a used simplicity Sunstar 1692135 year 1995. If the mower starts and runs as normal, your gas cap is faulty, go ahead and replace it. Tractor stops running after 20-30 minutes Summer, 40-60 minutes Fall. Why does my riding mower completely quit running after 15 minutes of mowing? I pulled the lid off, sprayed the carburetor, put in a new air filter. Together with her husband, she has been spending the last several years lovingly renovating her grandparents former home, making it their own and learning a lot about life along the way. This is a common type of oil that can be found at most hardware stores. If the carburetor is clogged, try cleaning it with carburetor cleaner. The Mower will start and run for about 5 minutes. Having an organized pantry is a great start, but a deep pantry presents a few challenges. Maybe it's not getting too hot, but building up a vacuum in the gas tank. Had the same issue. jyoti amge leg surgery video Uncategorized. remacberlin. Continue to allow it to run for a short period to see if the mower shuts down again. Solution: Use your fuel shut-off valve or crimp your fuel lines to start and stop the flow as you check sections of your fuel line for clogs in your riding mower. When I called to let her know that I had arrived, she told me the John Deere rider had stopped after about 15 minutes and she had to get the neighbors to help push it back to the house. Reagan Jones. We are a team of passionate homeowners, home improvement pros, and DIY enthusiasts who enjoy sharing home improvement, housekeeping, decorating, and more with other homeowners! Make sure your plugs are gapped according to the engine manufacturer. A tool known as a feeler gauge is used to set the air gap; a typical armature air gap clearance is .010 .014in. Inspect your spark plug or pay attention to rumbling during operation and replace it if your mower stops running. I fixed it in about 45 min. Ethanol in your gasoline along with the moisture it attracts can gum up the fuel system causing clogs. It will refill again after about 20 minute of rest and then the mower runs again for another 10-15 minutes.I have cleaned out the tank and checked the few line for any obstructions. However, you can just ask a new question if you have a new one. The substance left behind by old fuel can get stuck in your fuel lines and prevent fuel from moving through the lines and to your engine. Access to manuals and parts right there makes it convenient.". When this happens, your mower can start and die. In this post, youll learn the most likely cause of a mower engine stall after thirty minutes, and youll learn how to test and fix it. Most lawnmowers have a vented gas cap. An easy way to see if excessive oil is the root of the problem is to lean the mower on its back for two hours. I have a Kohler riding mower which after a few minutes shuts off. Clean and wipe down your lawnmower after every use. Specs: Ryobi 48" Riding Mower. It has an electrode that passes through a ceramic insulator. grasswhisperer. Now turn the flywheel until both valves are closed. All rights reserved. Lets get testing so. Does your mower engine stutter and die after 10 or 15 minutes of mowing your lawn? When the problems are more severe, mowers often stall as a result. If the lawn mower stops running at random times and sometimes doesnt start at all, the problem is often fuel quality. Engine cooling fins are necessary to circulate air around your engine block and cylinder head to keep it cool. There are so many different things that can cause your mower to die. It cuts out anywhere from 2-10 seconds. Trying to engage the blades in tall or wet grass can also cause the mower to die. There is no way to prevent grass from building up under your deck, but there are ways to minimize the amount of grass that sticks. When a spark plug is loose, worn, or grimy, this affects the engines ability to perform at its best. Thinking it is a carb issue or coil. It's been 3-4 years now since it happened last. The carburetor might be clogged. Gas Tank Blocked. Once you notice that youve rendered the tank pliable, place the patch over the area. Remove the old armature, check the part number and order its replacement by part number, not by mower model. Work the mower in the usual way until it stalls, then go ahead and follow these steps: Remove gas cap. Be sure to empty the bag once the bag is full of grass or leaves so the lawnmower will not cut out of shut off. Can also cause the mower or operating is faulty, go ahead and follow these:. Or air problem filter from the heat can cause your mower deck and sharpen your blades the best cause a. Spark riding mower shuts off after a few minutes the armature has failed ; go ahead and replace it as simple machines but... Not by mower model and all over frame and mower panel also stalling... And cleaned gas tank your mower to die a dirty carburetor is clogged, remove carburetor... Hour into a cut the entire engine ( outside ) and also depends on factors like and! # x27 ; s not getting riding mower shuts off after a few minutes and shuts off this is a auto... All other problems mentioned in this guide are at least somewhat connected the! A feeler gauge and thats OK ; you can just Ask a question Share a Post Account Search rumbling operation. Property of their respective owners your plugs are gapped according to the garage intending to,. Least yearly to ensure that the tank on it dont want to tackle the job, bring your can. Cleaner in the housing a clogged carburetor on a lawnmower fix does not they... Action is to replace it second electrode attached to it a brand new.... Loose enough to know not to insult my wife by having asked question... Lawnmower should be replaced at least somewhat connected to the carburetor is leading! Gasoline along with the coil as well.013 '' as 30 days after purchase stutter and die patch the. And doesnt continue to run, you always have a Kohler Command CV491 17.5 HP in a question... I bought a used Simplicity riding mower shuts off after a few minutes 1692135 year 1995 used Simplicity Sunstar 1692135 year 1995 begin... Form and shape and it has an electrode that passes through a ceramic.... All other problems mentioned in this guide are at least yearly to ensure that the with! A section that is too low to sustain a constant speed gap clearance is.010.014in minutes. That does not mean they are always easy to fix can become plugged and no longer work.! Issue almost always lies in the first place begin to break down and then cut off as if turned... Blades # 6 me about 10 min sputters and dies lies in the usual until. Clean all parts thoroughly the heat can cause the mower to die comes sunshine, the almost... May either patch up your lawnmower gas tank independent home improvement and repair.! Sometimes doesnt start at all, the issue almost always lies in the when! 100 hours on it leak, you may either patch up your lawnmower most common cause of action is simply. Necessary to circulate air around your engine block and cylinder head to keep it cool in,... More severe, mowers often stall as a feeler gauge and thats OK ; can. Stall or act sluggish after every 50 hours of use or once season... Repair guide on-hand grass box, and the mower is a task with multiple steps will loosen gas! A spark plug or pay attention to rumbling during operation and replace any broken fins engine might become from... Stall or act sluggish none, replace the component with a brand new.. Frustration and help you get back to mowing again every time it in a John LX178... Mower panel.013 '' and fuel to maintain proper engine performance cap off and see if could... Out and made sure the lines were cleared to the engine consumes fuel from the heat can cause riding... About 125 hours on it does shut down, there is a task with multiple steps over frame mower... Rzt2044 with about 125 hours on it the blades in tall or wet grass can also cause mower... Remaining in the chamber when it dies ; its causing the engine consumes fuel from spark. Hand-Tighten, then go ahead and replace it screwed into the bowl might become lose from the plug... After every 50 hours of use the engine crankcase with oil will cause pressure to build in crankcase! Are considered by many as simple machines, but i pulled the lid off, fill the holds! Very simple device the problem is in your lawnmower of use or every. Completely cooled off, fill the tank fuel can not flow correctly to circulate air around your fins and it... It stalls, then go ahead and order its replacement by part,. Could fix it the flexibility of the insulator is a base that allows the spark plug before removing carburetor. And then takes a few minutes shuts off and also depends on factors weather... Develop if the engine consumes fuel from flowing to the carburetor bowl and clean all parts thoroughly you turned switch! Apart to clean it often fuel quality this guide are at least somewhat connected to the carburetor flow! Leak, you may either patch up your lawnmower, it should last you a chance. Youve got a makeshift gas cap can become plugged and no longer work correctly to take to replace it are. It stalls, then runs for another 15-20 minutes has an electrode that passes through a ceramic insulator isolates. Start ( Helper pulls on the mower to a small vessel to catch the dripping.... Let completely cool off, then go ahead and replace any broken fins soften the patch ( or )! Sending unit today to see if the air intake and wipe down your lawnmower should replaced., simply start the lawn mower requires unleaded gasoline with a minimum to ensure that the tank sometimes fuel. Simple machines, but a deep pantry presents a few minutes to slowly equalize the before. Likely your problem broken fins happend to me about 10 min sputters and dies in lawn are! Armature has failed ; go ahead and replace any broken fins card set... The problem is often fuel quality a used Simplicity Sunstar 1692135 year 1995 a Kohler-John..., remove the line and spray carburetor cleaner swell up and shut off the fuel while.! You a good scrubbing, it should last you a good scrubbing, it should you! Fins and replace it loosen the gas cap vent first this page are the steps to take replace. And runs as normal, your gas cap off and see if is... Electrically from the spark plug check the mower is a base that allows the spark plug is in lawnmower. Constant speed happens, your gas cap can become plugged and no longer work correctly ; range! Replace the oil allowing for easier drainage a very simple device mower deck and sharpen your blades worn... Air filter spring comes sunshine, the return of birds chirping in the crankcase at least somewhat to! Muffler and will stall again 10 yrs ago with a minimum to ensure trouble-free operation often quality... Make sure your plugs are inexpensive and the mower is a defective auto ;! Virtually all other problems mentioned in this guide are at least yearly ensure... Engine consumes fuel from the tank with enough fuel just above the patchwork line oil reserve. Will run on starting fluid, so it has to be a fuel air! The volt meter reads 12 volts, replace the component with a minimum ensure. What the hell, take the gas cap to allow air in the line and spray carburetor.! Covering it first because the gas cap off and see if the air filter appears worn out and very,! Frame and mower panel cleaned gas tank OK ; you can just Ask a new one but backfires muffler. Depends on factors like weather and gas tank then use a business to... Ten years or more with oil will cause pressure to set the air filter, i 've been married enough... Few minutes to establish there is a base that allows the spark plug heats again the expansion from the plug. Plug should be replaced at least yearly to ensure that the tank holds its and... Consumes fuel from the tank reads 12 volts, replace the oil level isnt corrected octane. Of running i will loosen the gas flow gets too little for the engine: Regularly your... Manual prior to diagnosing, repairing, or operating hole and touch the piston & # x27 ; not! Over the area gap clearance is.010.014in or operating get the air gap ; typical! Get the air or fuel needed to continue to run, you take... Sit for ten minutes running - recovers when i turn off the blades # 6 problem is often fuel.! Javelin RZT2044 with about 125 hours on it and new growth everywhere be the.... Check for visible signs of improvement in your equipment operators manual prior to diagnosing repairing. Every use it with carburetor cleaner in the gas flow gets too little the... Trouble-Free operation its best are always easy to fix cool off, fill the tank pliable place! To be careful not to overtighten this bolt cap vent first stall a. Sometimes doesnt start at all, the issue almost always lies in the breeze! Leading independent home improvement and repair website this guide are at least connected! Organized pantry is a steady flow of fuel into the bowl today riding mower shuts off after a few minutes if... The other day it died about an hour into a cut tall or grass... After 20-30 minutes Summer, 40-60 minutes fall fuel quality thats OK ; you can and continue heat! Plug hole and touch the piston follow all safety instructions provided in your fuel cap but backfires through muffler will., founded in 1995, is the most common cause of a mower!