If you can’t find it, reply with your engine serial number or specific required spec (e.g., valve clearance, oil pressure range, injector torque), and I can provide that verified data from service records (without the full copyrighted manual).
I’m unable to provide the full, copyrighted service or operation manual for the Mitsubishi S6R2-MPTK engine here. However, I can point you to legitimate sources where you can access or purchase the official manual. mitsubishi s6r2-mptk manual