Erich Industries, Inc. - Exploded Parts Illustrations http://www.diswebsites.com/news_rss.cfm?detailid=6190 Exploded Parts Illustrations MODEL 600 PARTS ILLUSTRATION (PDF FILE) http://www.erichindustries.com/OpenerModel600PartsIllustration.pdf MODEL 300 AND 630 PARTS ILLUSTRATION (PDF FILE) http://www.erichindustries.com/Model630-300DoorOpenerInstallation-OwnerManual2.pdf