Yamaha 2002 TDM900 Service Manual page 406

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 down.
CAUTION:
S Be sure to hold the socket firmly when re-
moving the bulb. Never pull the lead, other-
wise it may be pulled out of the terminal in
the coupler.
S Avoid touching the glass part of the head-
light bulb to keep it free from oil, otherwise
the transparency of the glass, the life of the
bulb, and the luminous flux will be adverse-
ly affected. If the headlight bulb gets soiled,
thoroughly clean it with a cloth moistened
with alcohol or lacquer thinner.
2. Check:
S bulb (for continuity)
(with the pocket tester)
No continuity ! Replace.
Pocket tester
90890-03132
NOTE:
Before checking for continuity, set the pocket
tester to "0" and to the "Ω
a. Connect the positive tester probe to terminal
1 and the negative tester probe to terminal
2 , and check the continuity.
b. Connect the positive tester probe to terminal
1 and the negative tester probe to terminal
3 , and check the continuity.
c. If either of the readings indicate no continuity,
replace the bulb.
8-6
ELEC
1" range.