2005 Kawasaki KAF400 Mule 600 and Mule 610 4x4 Service Manual, Page 372Get this manual
16-42 ELECTRICAL SYSTEM Lighting System
Headlight Beam Adjustment
Turntothe adjusting screw [A] on each headlight rim in or out adjust the headlight vertically
Headlight Bulb Replacement
Remove: [A] Screws