Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Does engine stall, or is it like the key is turned off? If stalls, engine may have problem but if it cuts off like key , then a safety switch is not making.
Ok, have you ran a cylinder balance test? Loosen the spark plug wires and with engine idling, remove one wire at a time, engine should continue to run. If engine dies when either wire is removed, the opposite cylinder is not firing. Check dead cylinder for spark, and compression. With Kawasaki, you may have a bad coil on one cylinder.
I see question is still open, did you run the cylinder test? Result?