Always give year, make, engine size and model # when asking questions. We need all of that info to give an informed answer.
Sometimes the year can make a difference.
A Warrior can either be a motorcycle or ATV
Motorcycle
http://www.motoverse.com/vinDecoding.asp
The VIN # on the quad is on the lower frame rail, left side, next to the foot peg.
Call Yamaha to learn the year.
http://www.yamaha-motor.com/sport/contactus/home.aspx