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Is There a Break-In Period for Refurbished Generators?

April 5, 2026

Quick Answer

Refurbished generators typically require a break-in period of 10-20 hours of operation to allow the engine to seat properly and for the oil to circulate through the engine, after which the oil can be changed according to the recommended interval.

Breaking In a Refurbished Generator

When purchasing a refurbished generator, it’s essential to follow a break-in procedure to ensure the longevity of the engine. This involves operating the generator at a moderate load (around 25-50% of its maximum capacity) for an extended period, usually 10-20 hours. This allows the engine to seat properly, and the piston rings to break in, which helps to prevent excessive oil consumption and wear on the engine.

Oil Change Interval for Refurbished Generators

After the break-in period, the oil change interval for a refurbished generator is typically the same as that of a new generator. Most manufacturers recommend changing the oil every 50-100 hours of operation, or every 6-12 months, whichever comes first. However, it’s crucial to consult the owner’s manual for specific recommendations, as some manufacturers may have different requirements. Additionally, if the generator has been stored for an extended period, it’s recommended to change the oil before the first use, as the oil may have broken down during storage.

Maintenance Tips for Refurbished Generators

To ensure the continued performance and longevity of a refurbished generator, it’s essential to follow a regular maintenance schedule. This includes checking and replacing the air filter, spark plug, and fuel filter as recommended by the manufacturer. Regular cleaning of the generator and its components, as well as monitoring the oil level and condition, are also crucial to prevent premature wear and tear. By following these maintenance tips, you can extend the lifespan of your refurbished generator and ensure it continues to provide reliable power when you need it.

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