`Engine and Frame numbers'

[Candygold16]

Hello i know that on the FS-1es the engine and frame numbers match. On any other Classic yamahas do the engine and frame numbers not match. Is there a list or a place to look to see if the numbers match up or not or what they should be ??

Any help would be greatly appreciated
Thanks
Candy

[pertheswede]

Most YAMAHA frame and engine numbers matched when leaving the factory unlike others like Kawasaki to name but one. What do you need to know? Is it DT125 related perhaps ?

[Candygold16]

Most YAMAHA frame and engine numbers matched when leaving the factory unlike others like Kawasaki to name but one. What do you need to know? Is it DT125 related perhaps ?

Yeah its DT/RD related : D Is there some sort of database/list with all the explanations and decoding of the Yamaha engine and frame numbers ??
Cheers