Those plastic fasteners [92039] are supposed to removable and usable. Just pry up the center pin to release them. Under that plastic cover is a metal rotating screen [14037] that prevents the shroud from coming off. It is actually a little larger then the fan hole in the shroud. Three screws [92151] that requires either a hex bit or a torx bit depending the engine age is what hold this screen on. May have to smack them to get them to loosen.
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