Kawasaki Ninja 150 Rr Service Manual Link ((link))

The stock Keihin PWK28 jetting is listed: Main jet #98, Pilot #38, Needle clip position #3. If you run an aftermarket exhaust, the manual gives you the safe range (generally up to #110 main jet).

In the "Racer" community, particularly in Indonesia and Malaysia, the Ninja 150 RR is often heavily modified. Enthusiasts swap cylinders, port exhausts, and install aftermarket CDIs. The service manual serves as the "ground zero" for these modifications. Knowing the stock compression ratio (7.0:1) allows tuners to calculate new ratios for racing fuel. Knowing the stock port timing allows them to aggressively alter the KIPS sub-port timing. Thus, the manual is not just a repair tool, but a canvas for engineering creativity. kawasaki ninja 150 rr service manual link