How full should you fill a fuel tank for a PWC?

When filling a fuel tank for a personal watercraft (PWC), it's best to fill it to around 90-95% full to allow for expansion of the fuel. This helps prevent spills caused by fuel expanding in warmer temperatures. Additionally, leaving some space in the tank helps avoid overfilling and ensures proper performance. Always consult the owner’s manual for specific recommendations related to your PWC model.