Forgetting to activate the kill switch on your motorcycle before starting or using it should not directly break the engine. The kill switch is a safety feature that cuts off the electrical power to the ignition system, effectively preventing the engine from starting or running. When the kill switch is in the "off" position, it interrupts the circuit and stops the spark plugs from firing, halting the combustion process.
If you forget to activate the kill switch and attempt to start or use the bike, the engine will still start and run normally if all other systems are functioning properly. However, you may experience some undesirable effects or potential risks:
Difficulty in stopping the engine: If you need to quickly shut off the engine while riding, not having the kill switch activated may make it more challenging to do so. You would have to rely on the ignition key or other means to turn off the engine.
Drained battery: If you leave the ignition system powered on for an extended period without the engine running, it can drain the battery. This can happen if you inadvertently leave the key turned to the "on" position without starting the engine.
Safety risks: The kill switch is a safety feature that allows you to quickly stop the engine in emergencies or potentially dangerous situations. Forgetting to activate it may hinder your ability to stop the engine promptly if needed.
It's important to develop good habits of using the kill switch as part of your pre-ride and post-ride routine. Make sure to activate it before starting the engine and deactivate it when you've finished riding. This helps ensure proper control over the motorcycle's operation and promotes safety.