Yamaha YFM250RX 2008 Service Manual page 273

CHECKING THE BULBS AND BULB SOCKETS
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WARNING
Since the headlight bulb gets extremely
hot, keep flammable products and your
hands away from the bulb until it has
cooled down.
CAUTION:
• Be sure to hold the socket firmly when
removing the bulb. Never pull the lead,
otherwise it may be pulled out of the ter-
minal in the coupler.
• Avoid touching the glass part of the head-
light bulb to keep it free from oil, other-
wise the transparency of the glass, the life
of the bulb, and the luminous flux will be
adversely affected. If the headlight bulb
gets soiled, thoroughly clean it with a
cloth moistened with alcohol or lacquer
thinner.
2. Check:
• bulb (for continuity)
(with the pocket tester)
No continuity → Replace.
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NOTE: NOTE:
Before checking for continuity, set the pocket
tester to "0" and to the "Ω × 1" range.
a. Connect the positive tester probe to termi-
nal
minal
b. Connect the positive tester probe to termi-
nal
minal
c. If either of the readings indicate no continu-
ity, replace the bulb.
7-6
ELEC
Pocket tester
90890-03112, YU-03112-C
and the negative tester probe to ter-
, and check the continuity.
and the negative tester probe to ter-
, and check the continuity.