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HomeRepair HelpPoulan Pro Mower RepairPoulan Pro Lawn mower won't start Repair
Poulan Pro Lawn mower won't start
If your Poulan Pro lawn mower won't start, start with the basics most likely to stop ignition and fuel delivery. The first thing to check is the spark plug. If the insulator is cracked, the electrode is damaged, or the tip is carbon fouled, the mower may crank but never fire. A spark plug tester will tell you quickly if the plug is producing a strong spark. Next, look at the carburetor, since a clogged carburetor is one of the most common reasons for a lawn mower not starting, especially after fuel has been left sitting too long. Old gasoline can leave sticky deposits in the carburetor float bowl, so cleaning the carburetor with carburetor cleaner may help, and if not, a carburetor repair kit or complete carburetor replacement may be the fix. If those parts check out, test the start switch for continuity and inspect the fuel pump, including the pulse line, diaphragm, and check valves. 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 Poulan Pro replacement part that fits your machine.
01 - Poulan Pro 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 - Poulan Pro 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 - Poulan Pro 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 - Poulan Pro Lawn Mower Start Switch
To determine if the start switch is defective, use a multimeter to test it for continuity.
Highly Likely
06 - Poulan Pro 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 Poulan Pro lawn mower start if it has fuel?
My Poulan Pro lawn mower has spark but won't start. What should I check next?
How do I know if the spark plug is bad on my Poulan Pro mower?
Could old gas keep a Poulan Pro push mower from starting?
How do I find the right Poulan Pro lawn mower part for my model?
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