Establish which plate you are photographing
Take an overview locating the plate, followed by a close image of the complete plate. Label whether it belongs to the assembled generator, engine or alternator. A perfectly readable component label can still cause confusion if it is presented as the complete-set identity.
Improve the capture before editing
Use available light, hold the camera steady and change your viewing angle to reduce glare. Keep all edges and rating rows visible. If a plate cannot be reached safely, document that limitation rather than removing guards or entering restricted compartments. Do not use abrasive cleaning to recover a sales photograph.
Check individual characters
Enlarge the saved image and inspect model suffixes, serial numbers, units and decimal points. If a character remains uncertain, record it as uncertain rather than filling in what seems likely. Keep the original image; a typed transcription helps searching but should not replace evidence the buyer can inspect.
Avoid edits that invent information
Cropping a duplicate for readability is different from reconstructing missing text. Do not use image enhancement that generates or replaces characters and then treat them as verified. When the source is unreadable, provide the image and seek equipment-specific identification support. Keep any later confirmation alongside the original evidence.