Asked in Yamaha Motorcycles What 4be 11e engine number and no frame to look at what size and year of yamaha engine do I have? The name of the quad will have a number after the model, like Yamaha Raptor The number means the cc is around that number. It found on the body near the engine of your bike. Asked in Yamaha Motorcycles Where is serial number on Yamaha pw50? On the underside of the engine on the left. On the engine, stamped somewhere on the cases. What year is my yamaha xs engine number 4r5. It is found on the top and on the lower left hand side. Wiki User The engine number on a Yamaha Raptor is located on the engine casing. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply. If we can't tunnel through the Earth, how do we know what's at its center? What year is your Yamaha pw50 engine serial number 3pt frame number jya3ptw01ta? All Rights Reserved.