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HomeRepair HelpYard-Man Mower RepairYard-Man Lawn mower starts then stalls Repair
Yard-Man Lawn mower starts then stalls
If your Yard-Man lawn mower starts then stalls, the most common cause is a clogged carburetor from old fuel left sitting in the tank and carburetor bowl. That sticky gas residue can restrict fuel flow and make a lawn mower starts then dies or a lawn mower only runs for a few seconds. Start by cleaning the carburetor with carburetor cleaner. If that does not fix it, rebuild it with a carburetor repair kit or replace the carburetor entirely. Next, check the fuel cap vent. A blocked fuel cap can create vapor lock, starving the carburetor of fuel so the mower starts and then stops. Try loosening the cap slightly to see if the engine stays running. Old or bad gasoline can cause the same symptom and often goes hand in hand with a dirty carburetor, so draining the tank and refilling with fresh fuel is a smart step. If fuel delivery checks out, inspect the spark plug for cracks, carbon buildup, or electrode damage, and confirm spark with a spark plug tester. Enter your Yard-Man model number on RepairClinic.com to find the exact replacement carburetor, fuel cap, spark plug, or other lawn mower parts that fit your machine.
01 - Yard-Man 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-Man 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-Man 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-Man 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-Man lawn mower start then stall after a few seconds?
How can I tell if the fuel cap is making my Yard-Man mower starts then stalls problem worse?
My Yard-Man lawn mower has spark but won't stay running. Should I still check the spark plug?
What should I check first if my lawn mower starts then dies after sitting all winter?
How do I find the right Yard-Man carburetor, fuel cap, or spark plug for my mower?
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