Spacer behind clutch rd350

[rickdecollo]

Hello
I tried to split the case on what I believe is a late model 1974 rd350.
I didn't realize this spacer was behind the clutch and I broke it. My other 74 doesn't have this. Any idea what it is called?
Thank you!

[1976RD400C]

Cover plate. Look can look up oem parts at several web sites.   
https://www.yamahapartsmonster.com/oemparts/a/yam/50041822f8700209bc784eb3/transmission

[rodneya]

You must have been beating on the cases pretty hard to break that. Are the machined sealing surfaces still good?

[m in sc]

to be honest, you can still run that but they arent hard to find either, common part.

[2 Smoker]

I hate when that happens

[IR8D8R]

I thought that a missing retainer/cover plate meant they were R5/DS7 cases?

IR8D8R