2003 LS 2000 engine question

[Tony M]

Hello, I just bought this knowing one engine is locked up. I'm trying to figure out what model engine it is. the vin plate in the engine compartment says the boat model is a
LST2000A, then on service papers shops have identified it as a LX 210, LX 2000, LST1200A the vin search. did me no good. vin YAMCK122H203.
Anyone here know what I should be looking for as far as an engine type ? does 66U mean anything?
regards
Tony

 

[the MfM]

It’s a Yamaha 1200 non power valve (NPV)

Same engine as in all the ls/lx 210/2000. And the exciter and early model ar210. It’s also I some pwc...the xl1200, SUV and more.

The 1100 and 1200r engines/models are similar but not a direct swap.