Work on a 2003 LST1200A-B and you will be reaching for LIT-18616-SB-02. It is the factory service manual for this hull, and the related code carried in the same volume is LX210.
What one book covers
Rather than publishing a separate manual per boat, Yamaha wrote a single 2003 sport boat volume covering the AR210, LS2000, LST1200-B and LX210 as well. Shared engine and pump work is documented once, which is useful if you own or service more than one of them.
The content is service-level: torque specifications, assembly clearances, electrical schematics, fuel and cooling system procedures, and the fault-finding charts used to trace a symptom back to a cause. Verify the code on your hull identification plate against LST1200A-B before you order, since the 2003 range used closely spaced codes.
