2004-2005 660 Yamaha Rhino Factory Service Manual, Page 358Get this manual
CHECKING THE BULBS AND BULB SOCKETS WARNING
Since the headlight bulb gets extremely hot, keep flammable products and your hands away from the bulb until it has cooled downCAUTION: Be sure to hold the socket firmly when removing the bulbNever pull the lead, otherwise it may be pulled out of the terminal in the coupler Avoid touching the glass part of the headlight bulb to keep it free from oil, otherwise the transparency of the glass, the life of the bulb and the luminous flux will be adversely affectedIf the headlight bulb gets soiled, thoroughly clean it with cloth moistened with alcohol or lacquer thinner2Check: bulb (for continuity) (with the pocket tester) No continuity ReplacePocket tester PNYU-03112-C, 90890-03112 NOTE: Before checking for continuity, set the pocket tester to "0" and to the1" rangeMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM