The length of time a motorcycle can sit without being driven depends on various factors such as the motorcycle's condition, storage conditions, and maintenance practices. However, here are some general guidelines:
Fuel System: If the motorcycle is not properly prepared for storage, fuel can degrade and cause issues. Fuel stabilizers can help prevent fuel deterioration, but it's generally recommended to not let the motorcycle sit for more than 3-6 months without using fresh fuel or treating the existing fuel.
Battery: If the motorcycle's battery is left connected without a maintenance charger, it can drain over time. Lead-acid batteries can self-discharge and may need recharging within a few weeks or months. Lithium-ion batteries generally have a lower self-discharge rate and can last longer without maintenance.
Tires: Tires can develop flat spots or lose air pressure if left stationary for extended periods. It's a good practice to periodically inspect and inflate the tires to the recommended pressure or use tire supports to minimize flat-spotting.
Fluids: Over time, fluids can deteriorate, lose their effectiveness, or become contaminated. It's recommended to change the oil and other fluids according to the manufacturer's recommendations before storing the motorcycle for an extended period.
Rust and Corrosion: If the motorcycle is stored in a damp or humid environment, there is a risk of rust and corrosion. Regular cleaning, applying protective coatings, and storing the motorcycle in a dry and well-ventilated area can help prevent these issues.
Overall, it's ideal to start and run the motorcycle periodically, even if it's not being ridden regularly. Regular maintenance and inspections are important to ensure the motorcycle remains in good condition during periods of inactivity. If the motorcycle is going to sit for an extended period, consider using a motorcycle cover and taking additional measures to protect it.