The 150 RR uses a wet, multi-plate clutch. The manual details:
The manual differentiates itself from 4-stroke manuals by focusing heavily on the carburetor and power valve system rather than valve trains. Kawasaki Ninja 150 Rr Service Manual
The Ninja 150 RR has unique systems:
A generic manual will miss these. Get the OEM part number (e.g., 99924-1348-01 for certain years) or a high-quality reproduction. The 150 RR uses a wet, multi-plate clutch