Quote Originally Posted by Louey View Post
This was intended to clarify the engagement depth on the ring gear teeth. If the metal plate is left off, all that will do is allow the starter to engage deeper into the ring gear teeth.
How ever, the starter can be mounted without the plate, as long as you check the engagement clearance. Not the ideal way to do it though.
Completely WRONG! Leave that plate out and it's a crap shoot as to having the starter the correct distance from the center of the crankshaft! Also if it's bent / twisted / damaged it may prevent proper placement of the starter.

Agree with you on checking the starter drive engagment arm for damage / wear.