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HomeRepair HelpYard Machines Mower RepairYard Machines Lawn mower starts then stalls Repair
Yard Machines Lawn mower starts then stalls
If your Yard Machines lawn mower starts then stalls, the most common cause is a clogged carburetor from old fuel that has turned sticky and restricted fuel flow. When a lawn mower starts then dies, or only runs for a few seconds, start by cleaning the carburetor with carburetor cleaner. If that does not fix it, the carburetor may need a rebuild with a carburetor repair kit or complete replacement. Next, check for old or bad gasoline, since stale fuel often causes the same varnish buildup that makes a mower starts and then stops. After that, inspect the fuel cap vent. A blocked fuel cap can create vapor lock, starving the carburetor and causing the engine to run then shut off. Try loosening the cap slightly to test it. If the engine keeps running, replace the fuel cap. Finally, inspect the spark plug for carbon buildup, a cracked insulator, or electrode damage, and confirm spark with a spark plug tester. For the exact Yard Machines carburetor, fuel cap, spark plug, or other replacement part, enter your model number on RepairClinic.com.
01 - Yard Machines Lawn Mower Carburetor
The carburetor might be clogged. 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. If the carburetor is clogged, try cleaning it with carburetor cleaner. If cleaning the carburetor isn’t effective, rebuild or replace the entire carburetor.
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02 - Yard Machines Lawn Mower Carburetor Repair Kit
The carburetor might be clogged. 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. If the carburetor is clogged, try cleaning it with carburetor cleaner. If cleaning the carburetor isn’t effective, rebuild or replace the entire carburetor.
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03 - Yard Machines Lawn Mower Fuel Cap
As fuel is consumed by the engine, the level in the fuel tank lowers. To make up for this, the fuel cap uses a small vent to allow air to enter the tank. 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 stops the flow of fuel to the carburetor causing the engine to stall. To determine if the fuel cap vent is clogged, try slightly loosening the cap and then starting the engine. If loosening the fuel cap allows the engine to stay running it is likely clogged and will need to be replaced.
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04 - Old or Bad Gasoline
The carburetor might be clogged. 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. If the carburetor is clogged, try cleaning it with carburetor cleaner. If cleaning the carburetor isn’t effective, rebuild or replace the entire carburetor.
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05 - Yard Machines Lawn Mower Spark Plug
Inspect the spark plug for signs of wear or damage. If the porcelain insulator is cracked, an electrode is burned away or damaged, or there is heavy carbon buildup at the electrode, replace the spark plug. To determine if the spark plug is defective, use a spark plug tester. You should see a strong spark between the tester’s terminals when the engine is cranking. If there is no spark, this indicates that the spark plug is defective and should be replaced.
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Frequently Asked Questions
Why does my Yard Machines lawn mower start then stall after a few seconds?
How do I know if the fuel cap is causing my Yard Machines mower to start and then die?
Can old gas make a Yard Machines lawn mower only run for a few seconds?
My Yard Machines lawn mower has spark but won't stay running. Should I still check the spark plug?
How do I find the right carburetor, carburetor repair kit, fuel cap, or spark plug for my Yard Machines lawn mower?
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