2004 Yamaha Motorsports Big Bear 400 4x4 Owners Manual - Page 121
2004 Yamaha Motorsports Big Bear 400 4x4 Manual
Page 121 highlights
EBU07061 Differential gear oil Differential gear oil measurement 1. Place the machine on a level surface. 2. Remove the differential gear oil filler bolt and check the oil level. It should be up to the brim of the filler hole. If the level is low, add sufficient oil of the recommended type to raise it to the specified level. 3. Install the differential gear oil filler bolt. Differential gear oil replacement 1. Place the machine on a level surface. 2. Place a container under the differential gear case to collect the used oil. 3. Remove the differential gear oil filler bolt and differential gear oil drain bolt to drain the oil. CAUTION: _ Be sure no foreign material enters the differential gear case. _ 1. Differential gear oil drain bolt 1. Differential gear oil filler bolt 8-12