Gas-Powered Engines: The serial number is located on the silver engine block, below the air filter cover and above the fuel tank, and is 12 characters long. Older units may have an 8 digit serial number. The serial number can also be found on the box near the barcode.

Battery-Powered Engines: The serial number is located on the side of the unit, next to the battery compartment, and is 12 characters long. Older units may have an 8 digit serial number. The serial number can also be found on the box near the barcode.

Attachments: The serial number is located at the end of the shaft where it connects to the coupler, and is 12 characters long.

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