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HomeRepair HelpEcho Mower RepairEcho Lawn mower won't start Repair
Echo Lawn mower won't start
If your Echo lawn mower won't start, start with the most common failure points before chasing deeper fuel or ignition problems. A worn or fouled spark plug is the first thing to check, especially if the porcelain is cracked, the electrode is damaged, or there is heavy carbon buildup. Use a spark plug tester to confirm the plug is producing a strong spark while the engine is cranking. If spark is good, the next likely issue is a clogged carburetor caused by stale fuel sitting too long in the mower. Old gas can leave varnish in the carburetor float bowl and passages, which can keep an Echo lawn mower from starting even when it has spark. In that case, try carburetor cleaner first, then a carburetor repair kit or a complete carburetor if cleaning does not solve it. After that, check the start switch for continuity and inspect the fuel pump, including the pulse line, diaphragm, and check valves. For the exact replacement spark plug, carburetor, start switch, fuel pump, or other Echo lawn mower parts, enter your model number on RepairClinic.com.
01 - Echo 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 - Echo 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 - Echo 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 - Echo Lawn Mower Start Switch
To determine if the start switch is defective, use a multimeter to test it for continuity.
Highly Likely
06 - Echo 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 Echo lawn mower start?
My Echo lawn mower has spark but won't start. What should I check next?
How do I know if the carburetor on my Echo mower is clogged?
How do I test an Echo lawn mower start switch?
How do I find the right spark plug, carburetor, or fuel pump for my Echo lawn mower?
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