200TLRP carburetors

[1970bama]

I have a 1991 Yamaha 200TLRP someone has broken off the air jets inside the carburetors. I have casting numbers off the carburetors but can’t find out what they mean to get replaced carbs can anyone help. Numbers as follow. 6R400
S621400
531
P0902M

 

[boscoe99]