I just got this 01 Yamaha Warrior from a friend of mine. The battery was dead when i got it and it needed some work. Today i brought it to a shop. The guy said he checked the oil and there was no oil in it, and then he added some oil and tried to jump the battery. Whenever he tried to start the bike up, it doesnt start, it just keeps clicking. He said its the crank bearing and i'll need a new motor, any advise?? i'm just making sure that could be the problem and he is not just trying to make some money off of me since he is gonna be the one fixing it