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How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

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 clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and cause the engine to stall.
Other things that could cause this issue are bad fuel, weak/colapsed/kinked fuel line, faulty spark plug, faulty ignition/coil, oil over full, clogged air filter, plugged/dirty carburetor, worn engine parts internal rings/valves/etc.
Often, dirt in the idle circuit can cause a no-idle situation, where the engine will run well at road speed. Sometimes, removing the idle mixture screw, blowing compressed air into the hole, replacing the mixture screw and readjusting the mixture may cure this problem.
The spark plugs are worn or damaged

If you find that your lawnmower keeps dying, or keeps stalling while cutting grass, then inspect the spark plugs. Look for signs of damage or wear. Something as simple as a cracked porcelain insulator can mean an electrode has been damaged or burned away.

As the fuel level drops, a vacuum begins to form in the fuel tank because air can get in to fill the space the consumed fuel occupied. 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.
Mower Gas Cap

If the tank is sealed, the fuel becomes air locked, and the mower stalls. This typically happens after a short period between ten and thirty minutes and also depends on factors like weather and gas tank fuel level.

Another symptom of an overheated mower engine can be that it will lock up or shut down, which might be a good thing because it will prevent further damage but also might be a sign of some damage itself.
The Spark Plug is Faulty

An issue with the spark plug is one of the most common reasons for a petrol lawnmower cutting out. Even if the spark plug looks to be in good condition, it may need replacing. Your spark plug should be replaced after every 25 hours of use.

Lean Air/Fuel Mix

Your automobile needs air and fuel to start and run and it`s the carburetor`s job to mix it. If there is too much air in the mixture, the engine isn`t getting enough gas and can stall. A mixture that is high on air and low on fuel is called a “lean” mixture, and it will affect your engine performance.

Use Carburetor Cleaner

Fortunately, you can generally do this without even taking the carburetor out of the engine. Start by purchasing some commercial lawnmower carburetor cleanerOpens a new window, which comes in a simple spray can and will make it easy to clean the inside and outside of the carb.

If the carburetor is new or has been rebuilt, you should set it to “factory” adjustment. You can do so by adjusting the idle mixture screws to 1.5-2 turns out, and the idle speed screw to 1-1.5 turns in. Warm the Engine Up. The engine`s running temperature directly correlates with proper air and fuel mixtures.
Carburetor Problems Cause Mower Engines Not To StartThe carburetor regulates how air and fuel move through the engine to power your equipment. If it is dirty, that can cause poor engine performance or starting problems. Disconnected, dirty or fouled spark plugs are common causes for engines that won`t start.
If the engine will idle but dies at full throttle the main jet in the carburetor may be plugged. You can repair a plugged main jet by cleaning it, replacing the jet, or replacing the carburetor. If you choose to clean or replace the main jet, you will also want to clean the rest of the carburetor.
A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and cause the engine to stall.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Hello i have a Honda GX160 and the engine will only run on choke if i close it the engine just splutters and thats it. it wont run at the norm i have replaced the carb the tank the air filter and the spark plug and know luck i have no more ideas as to what the problem really is thanks jord
ANSWER : Ii know you must have replaced the fuel filter. Did you replace the fuel line? It is obvious it is not betting enough fuel or it is out of time. Have you tried adjusting the jets on the carb? Have you checked the timing? There is a crankshaft key-way that may be bent just enough to get the engine out of time. And finally have you checked the fuel pump which I would suspect is your problem. The diaphragm may be busted.

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Won’t idle ,runs wide open unless you pull choke,solutions?
ANSWER : Maybe a carb overhaul can do the job.

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Honda g100 stationary engine starts and runs well on full choke but will not run without choke.
ANSWER : Same problem here. I solved it by removing carburetor, removing float and valve seat and soaking in carb cleaner overnite. Blew out all the orifices with air and reasembled. Runs as good as ever!Always turn gas off and run until empty, gas evaporates and leaves residue in bowl and valve.

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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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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.

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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<!– from fixya rte –>Electrical diagram for Honda GX390 – Honda Gx390 Motor Inside Cover
ANSWER : Check out the manual here http://cdn.powerequipment.honda.com/engines/pdf/manuals/37Z5F602.pdf

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Engine running rich?
ANSWER : Worn float needle or obstructed airflow (plugged foam filter)

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Mower won’t start
ANSWER : This may sound stupid but don’t mean it to…
Have you tried with the choke all the way open? Do you have an automatic cruise? Is the right (correct) pedal being pushed in? These will affect if it starts or not. Also if your drive belt or one of the other belts not being tight enough will affect if it starts or just turns over. Not too many things can stope it from starting with new/good battery AND if its getting gas. Try cleaning your gas line and obviously making sure there is no obstruction around or near your blade, if it does start with blade engaged that is :))
If it doesn’t start with blade engaged, well make sure it’s in neutral. Mine won’t start in reverse but will in forward or neutral.

Hope it helps.

Anthony

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