Unlock the Right Part
for Your Repair
Find the exact part you need
Enter your model number to see parts that fit your machine.
Price Match Guarantee
In-stock parts ship the same day
365-Day Return Policy
Price Match GuaranteeChoose Product
Identify Problem
03
Find Solutions
HomeRepair HelpGreen Machine Mower RepairGreen Machine Lawn mower won't start Repair
Green Machine Lawn mower won't start
If your Green Machine lawn mower won't start, begin with the parts most likely to stop ignition or fuel delivery. The first thing to check is the spark plug. If the insulator is cracked, the electrode is damaged, or there is heavy carbon buildup, replace it. A spark plug tester can confirm whether the plug is producing a strong spark while the engine cranks. If your lawn mower has spark but won't start, the next most common problem is a clogged carburetor caused by stale fuel sitting too long. That sticky fuel can block passages in the carburetor or carburetor float bowl, so try carburetor cleaner first, then rebuild it with a carburetor repair kit or replace the carburetor if needed. Old or bad gasoline can cause the same lawn mower not starting problem. After that, check the start switch for continuity and inspect the fuel pump, especially the pulse line, diaphragm, and check valves. Whether your push mower won't start or your Green Machine mower engine will not turn over properly, enter your model number on RepairClinic.com to find the exact replacement part that fits your mower.
01 - Green Machine 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.
Enter model number to search for the required part specific to your product
Top Solution
02 - Green Machine 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.
Top Solution
03 - Green Machine 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.
Top Solution
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.
Top Solution
05 - Green Machine Lawn Mower Start Switch
To determine if the start switch is defective, use a multimeter to test it for continuity.
Highly Likely
06 - Green Machine 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 Green Machine lawn mower start?
My Green Machine 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 Green Machine lawn mower?
Can bad gas keep a Green Machine push mower from starting?
How do I find the right Green Machine lawn mower part for my model?
Shop by Green Machine Lawn Mower Parts
Our Story
Family-owned and operated since 1912, Burke America Parts Group is the longest-running genuine appliance, HVAC, and outdoor power equipment parts solution in North America. At Repair Clinic, we're proud to be an international brand trusted by the pros as well as the DIY community.
About Repair Clinic
© 2026 RepairClinic.com