2018 Kawasaki Z900 RS — Owner's Manual
If the Engine Does Not Start. When the engine turns over but the engine does not start, inspect as follows. Check the fuel level in the fuel tank. If only a small quantity of fuel remains in the bottom, replenish the fuel tank.
(Fuel in the tank cannot be completely consumed. ) Leaving the motorcycle unused for a long time may cause fuel in the tank to deteriorate. In that case, ask an authorized dealer for inspection. When the engine warning indicator on the meter goes on and stays on, there may be a problem with the fuel injection system.
Ask an authorized dealer for inspection and maintenance. The motorcycle is equipped with a vehicle-down sensor which stops the engine automatically when the motorcycle falls down. When the starter button is pressed after the motorcycle has fallen down, the engine does not start. To start the engine, switch the ignition key to the “OFF” position and then back to the “ON” position.
Make sure that your ignition keys are registered by the immobilizer system. If you need additional spare keys, ask an authorized dealer to register them. Attaching any spare keys or metal parts to the ignition key with a key ring may cause communication problems between the key and the immobilizer system. In this case remove the spare key or metal object and check if the engine starts.