If your Kawasaki Z1000 2015 has been sitting idle for 2-3 years, there are a few additional considerations to keep in mind beyond the battery and tires:
Fuel System: Over time, fuel can deteriorate and lead to clogged fuel lines, injectors, or carburetors. If the motorcycle was not properly prepared for storage, the fuel may have degraded and caused deposits. It's recommended to drain the old fuel from the tank and fuel lines, and possibly clean or replace the fuel filter. Adding fresh fuel and a fuel system cleaner may also help.
Lubrication: The lubricants in the engine may have settled or degraded during the period of inactivity. Before starting the motorcycle, it's advisable to change the engine oil and filter. This will ensure proper lubrication and remove any contaminants that may have accumulated.
Cooling System: Check the coolant level and condition. If the coolant appears dirty or old, it's advisable to flush the cooling system and replace it with fresh coolant. Inspect the hoses and connections for any signs of deterioration or leaks.
Brake System: Inspect the brake fluid level and condition. Brake fluid can absorb moisture over time, which can affect braking performance. If the brake fluid appears discolored or contaminated, it should be flushed and replaced. Ensure the brake pads are in good condition and not seized.
Electrical System: Apart from the battery, check all electrical connections, wiring, and components. Ensure they are clean, secure, and free from corrosion. Inspect the lights, indicators, horn, and other electrical features to ensure they are functioning properly.
It's generally recommended to consult the owner's manual or a qualified mechanic for specific guidance on preparing a motorcycle that has been inactive for an extended period. They can provide detailed instructions and ensure all necessary steps are taken to get the motorcycle back into optimal condition.
By addressing these additional considerations and conducting a thorough inspection, you can help mitigate any potential issues that may have arisen from the extended period of inactivity and ensure the overall health of your motorcycle.