ID help on Early ’00’s Polaris Xplorer 250

Green Polaris Xplorer (maybe a early ’00’s-’02’ish ? 250 4×4 with Robin engine) but no solid verification as model number. Engine info below but some picks he sent below with it partially dissembled:
Robin engine ID tag:
EC250PFE150-5085
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Attachment 65730Attachment 65738Attachment 65746Attachment 1
Anyone know how to narrow the year by any method like engine serial #?

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