2010 Yamaha BIG BEAR 400 / 4WD / HUNTER / IRS EXPLORING EDITION ATV Service Manual. This is the highest quality Yamaha manual you can buy, This manual was created in a computer NOT a scaned image of a manual. You can zoom in or out on this manual as much as needed the images and text will not blur! The procedures in this manual are organized in a sequential, step-by-step format. The information has been compiled to provide the mechanic with an easy to read, handy reference that contains comprehensive explanation of all disassenbly, repair, assembly and inspection operations. Each chapter provides exploded diagrams before each disassembly section for ease in identifying the correct disassembly and assembly procedures. We guarantee this is the best manual you can get for your Yamaha, This is the same manual the Yamaha dealer uses!