Start with equipment identity
Check records for the set model, serial number, site equipment tag or another reliable identifier. Explain how a site tag maps to the generator’s plate. If an invoice covers several machines, identify the relevant line items. Do not assign a favorable record to your unit merely because the brand or size matches.
Build a dated summary
Create a short index listing service date, recorded hours, work described and the supporting filename. Keep the underlying reports available. Use the technician’s documented description instead of translating an oil change into a general certification of condition. Mark missing pages and uncertain dates rather than silently filling gaps.
Include problems and follow-up work
Pair a fault report with any later repair invoice or return-to-service record. If a recommendation remains open, disclose it. A repaired issue and an unresolved issue should not look the same in your summary. Buyers can then ask about the actual remaining uncertainty instead of assuming the latest invoice covers everything.
Keep tests separate from routine service
List operating checks and load-bank reports separately, with their dates and scope. Routine maintenance is not automatically evidence of tested output. If a report references attachments or results tables, include them when available. Avoid sending a cover page that omits the findings a buyer needs.
Prepare a shareable copy
Remove unrelated personal contact details, account numbers and confidential information while retaining equipment identifiers, dates and findings needed for review. Preserve an unaltered original in your own files. Tell buyers when a document has been redacted, and use clear filenames so they can request a specific record.