Briggs & Stratton
I ran my tractor out of fuel and then it wouldn’t restart after putting more gas in it. Several days later I emptied the gas tank and replaced the fuel filter. Still wouldn’t start. This is on a Briggs and Stratton engine series 420000. I then poured fuel directly into carb and adjusted the idle and mixture screws on the carb and it ran for a couple hours. Thinking it was fixed I ran it out of gas again and now it won’t start again. Tried adjusting carb again without success. The engine would only run before fully choked and max throttle. Is there something else I should do before removing the
Experienced gardeners share their insights in answering this question :
No sounds like your carb needs a real good babtising! good look!
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Disconnected, dirty or fouled spark plugs are common causes for engines that won`t start. For small engines, spark plugs typically need to be replaced every season or after 25 hours of use. You should also check to make sure the spark plug gap is set correctly.
Q. Why is my lawn mower turning over but not starting? The most likely reason is bad gas. Gas that sits for many months during the off-season will eventually break down, gumming up the fuel line and carburetor in the engine and preventing it from starting.
If you pull the cord and hear your engine turn over, but your mower is not starting, the most common reasons for this are low fuel, a broken gas valve, or a bad choke fault. A broker spark plug could also be the culprit. You may also have to change the fuel pump if it does not get fuel to the ignition system.
If your Briggs & Stratton engine has a spark but won`t run, then it is most likely a problem with the gas or air intake in the engine. 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.
Bad or dead battery
The most common reason cars don`t start is a dead or faulty battery. Even though most cars run on gasoline, they all require electrical power to function. The starter that cranks your engine to start requires an electrical signal to fire.
If your vehicle won`t start, it`s usually caused by a dying or dead battery, loose or corroded connection cables, a bad alternator or an issue with the starter. It can be hard to determine if you`re dealing with a battery or an alternator problem.
If your lawn mower turns over (or cranks) but won`t start, it could result from an issue with one of the components of the fuel system or bad gas. You should inspect the fuel filter for clogs or damage and check the fuel line for kinks, cracks, or leaks.
A full gas tank and oil reservoir are the essential first steps when checking why the lawn mower won`t stay running, but the problem could also be a dirty filter, clogged carburetor, improper fuel mixture, or a dirty spark plug.
A Dirty Carburetor Can Cause a Lawnmower To Start Then Die
By far, the most common issue that causes a stalled motor is a dirty carburetor. The carburetor on your engine is the thing that draws in air and mixes it with the fuel. Contrary to what the movies might make you think, gasoline itself is not very flammable.
If it won`t start or fire with spray fuel, you probably have an ignition system problem, most likely a bad ignition coil. However, if it starts and dies, that proves the ignition is working and the problem is fuel starvation. Check the fuel filter first by disconnecting the fuel line from the filter to the carb.
If there is no spark or fuel, then the first thing I would do is check the vehicle`s fuses and relays, particularly the EFI main and ignition relays. It may be possible that one of these components has failed and is cutting off power to the vehicle`s ignition and fuel systems.
If the ignition coil does not have spark, it`s time to check its wires. Use a test light to check the continuity on the signal wire and power wire on the ignition coil. If both wires are functional but the coil fails to produce spark, the ignition coil or the ignition control module is bad.
Some of the B&S auto choke carburetors tend to supply too much fuel to the cylinder when hot starting; this floods the spark plug, causing a no start. They have since modified the carburetor. So if you have an auto choke, Briggs, with the hot start problem, go ahead and swap out the carburetor.
Discover Relevant Questions and Answers for Your Specific Issue
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25 hp kolhler won’t stay running
ANSWER : Check fuel filter, it may be clogged, if so replace
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How to start murray 188 lawn tractor – Craftsman 17.5 hp 42 in. Deck Lawn Tractor – CA Model
ANSWER : Need more info. what is it doing or not doing
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Murray mower belt model 52431×92 – Craftsman 17.5 hp 42 in. Deck Lawn Tractor – CA Model
ANSWER : Get a 1/2″ x 92″ belt
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Murray 17.5 HP mower – no noise when turning key? Maybe ignition?
ANSWER : Look near the starter solenoid for a fuse. It is probably under the hood near the steering column. If fuse is good, problem is likely a safety switch.
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My mower will start but won't stay running – Toro LX466 22HP Lawn Tractor 13RT61RH244
ANSWER : I am going to respond 2 times to this post. The first reply will be generic things to check.
First off check the oil level and make sure it is serviced to full.
If your having a lack of fuel (runing lean) you will need to check fuel flow at the carb fuel mainfold. It should fill a spray paint can lid in less than 10 seconds but teting flow rated of the main fuel line. If you have poor flow here… you need to check the fuel filter and the fuel tank outlet port for obstructions.
First off check the oil level and make sure it is serviced to full.
If your having a lack of fuel (runing lean) you will need to check fuel flow at the carb fuel mainfold. It should fill a spray paint can lid in less than 10 seconds but teting flow rated of the main fuel line. If you have poor flow here… you need to check the fuel filter and the fuel tank outlet port for obstructions.
Good Fuel flow still shutting off…. remove the carb float bow and clean the debris from the bow’ and the treaded area where the fuel solenoid mounts Additionally you will have to again remove the main fuel line and spray carb cleaner in the float needle area to flush out any debris through the fuel hose connection.
For the second response I need to know which engine is installed on your mower by MODEL number if you can locate it. (there are 3 engines) At least try to find the engine model number. If you can not locate it Brand and HP of the engine (I assume 22 hp) Thanks for choosing FixYa,
Kelly
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12.5 hp murray tractor while running started to mis-fire then large puff of smoke out of muffler. wont re-start gas smell in oil all remainder of gas leaked out of tank overnight!
ANSWER : Sounds like you have dirt in your float bowl or your float needle and seat are worn out. Pull off the float bowl and look for contamination, remove the float and see if it is full of gas (it should NOT be) and check the float needle to see if it is grooved, cracked or badly worn. Be sure you change your oil as it has gas in it!!!
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Murray manual 42515X92B lawn tractor – Craftsman 17.5 hp 42 in. Deck Lawn Tractor – CA Model
ANSWER : I TURN THE KEY BUT NOTHING HAPPEN.I HAVE TO JUMP START IT FROM THESTARTER
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Murray riding mower the blades will not engage
ANSWER : Sounds like the cabel it broke
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