Identify which date you actually have
The generator-set build date, engine build date, installation date and acquisition date may be different. Label each date according to its source. If a service invoice only proves the generator was installed by a certain year, report that fact instead of treating the year as a confirmed manufacture date.
Photograph the hour reading
Capture the normal meter or controller display if safely accessible, and date the photo. State whether the reading represents total engine hours or another counter when documented. If you cannot identify the counter, provide the photo and say so. Avoid operating controls or entering service menus solely to fill in a listing field.
Disclose meter and controller changes
A replaced controller can make a displayed reading incomplete as a lifetime history. Include replacement records, earlier service-hour readings and any documented carryover. Do not add uncertain readings together or imply the new display is verified lifetime usage. Write a direct note such as: display shows 420 hours; earlier operating hours are not documented.
Describe how the equipment was used
Explain whether the unit supported standby service, a temporary project or another documented application. Attach exercise logs or service records if available. Avoid assuming that low displayed hours prove excellent condition. Storage, maintenance, known faults and recent observations still belong in the equipment package.
Give buyers a timeline they can review
Arrange three or four dated milestones: installation, major service, meter replacement and most recent operating observation. Include the source for each entry. A short factual timeline lets buyers ask focused questions without making you reconstruct the equipment’s entire history. Keep gaps visible and update the submission when better documentation becomes available.