Message from Yamaha: ATVs with engines 49 to 70cc are recommended for use only by riders age 6 years and older, and always under adult supervision. ATVs with engines 90cc or greater are recommended for use only by riders age 16 years and older. Yamaha recommends that all ATV riders take an approved training course. For safety and training information, see your dealer or call the ATV Safety Institute at 1-800-887-2887. ATVs can be hazardous to operate. For your safety: Always avoid paved surfaces. Never ride on public roads. Always wear a helmet, eye protection and protective clothing. Never carry passengers. Never engage in stunt riding. Riding and alcohol/drugs don't mix. Avoid excessive speed. And be particularly careful on difficult terrain.