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Generator won’t start

Common solutions for: Generator won’t start

01 - 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.
Required Part
Generator Spark Plug
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Most Common Solution
02 - Carburetor
The carburetor might be clogged. A clogged carburetor is most commonly caused by leaving fuel in the generator 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.
Required Part
Generator Carburetor
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Most Common Solution
03 - Ignition Coil
The ignition coil sends voltage to the spark plug while the engine is running. If the ignition coil is defective, the engine may not start. Before replacing the ignition coil, ensure that the spark plug is working properly. If you have confirmed that the spark plug is working properly, test the ignition coil with an ignition coil tester. If the ignition coil is defective, replace it.
Required Part
Generator Ignition Coil
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Most Common Solution
04 - Recoil Starter
The recoil starter assembly engages the crankshaft to turn over the engine. If the recoil starter assembly is defective, it may not engage the crankshaft correctly. Remove the starter assembly and inspect it to determine if it is working properly. When you pull the starter rope, tabs extending from the pulley and cam should grab the hub on the engine, causing the engine to turn. When you release the rope, the tabs should retract and the rope should rewind back on the pulley.
Required Part
Generator Recoil Starter
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Common Solution
05 - Safety Switch
The safety switch can be tested with a multimeter to determine if it is defective.
Required Part
Generator Safety Switch
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Common Solution
06 - Start Switch
If the start switch is difficult to turn or works intermittently, replace it. To determine if the start switch is defective, use a multimeter to test it for continuity. The switch should have an open contact in the 'off' position and a closed contact in the 'on' position.
Required Part
Generator Start Switch
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Common Solution

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