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HomeRepair HelpHomelite RepairHomelite Lawn mower won't start Repair
Homelite Lawn mower won't start
If your Homelite lawn mower won't start, start with the basics that fail most often. The first thing to check is the spark plug. Look for a cracked insulator, burned electrode, or heavy carbon buildup, and confirm spark with a spark plug tester while the engine is cranking. If the plug checks out, the next likely problem is a clogged carburetor caused by stale fuel sitting too long in the mower. That sticky residue can block fuel flow and leave you with a lawn mower not starting even though the engine seems otherwise fine. Try cleaning the carburetor with carburetor cleaner, then rebuild it with a carburetor repair kit or replace the carburetor if needed. Old or bad gasoline in the carburetor float bowl can cause the same no-start condition. After that, check the start switch for continuity with a multimeter, and inspect the fuel pump, including the pulse port line, diaphragm, and check valves. Whether your Homelite 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 replacement parts that fit your mower.
01 - Homelite 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 - Homelite 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 - Homelite 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 - Homelite Start Switch
To determine if the start switch is defective, use a multimeter to test it for continuity.
Highly Likely
06 - Homelite 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 Homelite lawn mower start?
My Homelite lawn mower has spark but won't start. What should I check next?
How do I tell if the start switch is bad on a Homelite lawn mower?
Can a bad fuel pump keep my Homelite mower from starting?
How do I find the correct spark plug, carburetor, or fuel pump for my Homelite lawn mower?
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