I didn't read the document, but without even looking at it I'd say that its just stating that the pump has to meet certain emissions standards. Which isn't a warranty against it breaking down. Just says it has to be certified to meet the emission standards for 3000 hours or five years. I think your reading more into it than what it was intended. Of course I've been wrong a couple of million times before.
Sincerely, Dirt
make that a million plus one
the label shall read:
`This nonroad engine is warranted for five years or 3000 hours of operation from the date of release to the owner, whichever first occurs.''
warranty = repair, not simply a spec that must be met...
John.