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HomeRepair HelpYard Machines Mower RepairYard Machines Lawn mower runs rough Repair
Yard Machines Lawn mower runs rough
If your Yard Machines lawn mower runs rough, sputters, or surges after starting, the problem is usually in the fuel system. The most common cause is a clogged carburetor from old gas left in the mower, which can make the engine run unevenly or cause a lawn mower runs rough condition that gets worse as it warms up. Start by cleaning the carburetor with carburetor cleaner. If that does not fix it, install a carburetor repair kit or replace the carburetor. Next, check the spark plug for wear, carbon buildup, or a cracked insulator, and use a spark plug tester to confirm it produces a strong spark while the engine is cranking. A weak or faulty plug can also make a mower engine surge or run rough after starting. If the carburetor and spark plug check out, inspect the fuel filter since old fuel can clog it and restrict fuel flow. Draining stale gas and replacing the filter often helps. Enter your Yard Machines model number on RepairClinic.com to find the exact carburetor, spark plug, fuel filter, or other replacement part that fits your mower.
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 run roughly. 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 run roughly. 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 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.
Highly Likely
04 - Yard Machines Lawn Mower Fuel Filter
The fuel filter might be clogged. A clogged fuel filter is most commonly caused by leaving old fuel in the lawn mower. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the fuel filter and cause the engine to run roughly. If old fuel was left in the lawn mower, drain the old fuel from the fuel tank and replace the fuel filter.
Less Common
Frequently Asked Questions
Why does my Yard Machines lawn mower run rough after it starts?
Can a clogged carburetor make a Yard Machines mower sputter or surge?
How do I know if the spark plug is causing my Yard Machines lawn mower to run rough?
Will an old or clogged fuel filter make a Yard Machines mower run unevenly?
How do I find the right carburetor, spark plug, or fuel filter for my Yard Machines lawn mower?
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