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HomeRepair HelpWeed Eater Mower RepairWeed Eater Lawn mower won't start Repair
Weed Eater Lawn mower won't start
If your Weed Eater lawn mower won't start, begin with the most common trouble spots: a bad spark plug, a clogged carburetor, or stale gas gumming up the carburetor float bowl. Check the spark plug for a cracked insulator, damaged electrode, or heavy carbon buildup, and use a spark plug tester to confirm it produces a strong spark while the engine is cranking. If ignition checks out, the next likely issue is fuel delivery. Old gasoline can leave sticky deposits that clog the carburetor, so try carburetor cleaner first. If that does not fix a lawn mower not starting, you may need a carburetor repair kit or a complete carburetor replacement. On some Weed Eater models, a faulty start switch can also keep the engine from firing, and a weak fuel pump can prevent gas from reaching the carburetor properly. Whether your push mower won't start or your lawn mower has spark but won't start, enter your model number on RepairClinic.com to find the exact Weed Eater spark plug, carburetor, start switch, fuel pump, or other replacement part that fits your mower.
01 - Weed Eater 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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02 - Weed Eater 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 prevent the engine from starting. 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 - Weed Eater 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 prevent the engine from starting. 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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04 - Old or Bad Gasoline
There may be old or bad fuel in the carburetor float bowl. 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 prevent the engine from starting. 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 - Weed Eater Lawn Mower Start Switch
To determine if the start switch is defective, use a multimeter to test it for continuity.
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06 - Weed Eater Lawn Mower Fuel Pump
The fuel pump has three ports: the gas in port, the gas out port, and the pulse port. The pulse port is connected to the engine crankcase by a small rubber tube. As the engine runs, air inside the crankcase alternately pressurizes and depressurizes the air in the tube. This pressurized air moves a diaphragm inside the pump and pumps the gas. If the engine oil is overfilled, oil can enter the pulse port line, preventing it from working properly. The fuel pump also has two small check valves on the input and output ports. The check valves prevent fuel from reentering the gas tank. These check valves can fail. To determine if...
Highly Likely
Frequently Asked Questions
Why won't my Weed Eater lawn mower start?
My Weed Eater lawn mower has spark but won't start. What should I check next?
How do I know if the start switch is bad on my Weed Eater lawn mower?
Can bad gas keep a push mower from starting?
How do I find the right Weed Eater lawn mower part for my model?
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