Lighting System; Checking The Taillight (Leds) - Yamaha WR450F(W) Owner's Service Manual

LIGHTING SYSTEM

CHECKING THE TAILLIGHT (LEDs)

1. Disconnect the taillight coupler.
2. Connect two jumper leads 1 from the bat-
tery terminals to the respective coupler ter-
minal as shown.
Battery (+) terminal →
Battery (–) terminal →
3. Check:
• LED (for proper operation)
Does not light → Replace the taillight
assembly.
WARNING
• A wire that is used as a jumper lead must
have at least the same capacity of the bat-
tery lead, otherwise the jumper lead may
burn.
• This check is likely to produce sparks,
therefore, make sure no flammable gas or
fluid is in the vicinity.
AC MAGNETO INSPECTION
1. Inspect:
• Lighting coil resistance
Out of specification → Replace.
Tester (+) lead → Yellow lead 1
Tester (–) lead → Ground 2
Lighting coil
resistance
0.224 ~ 0.336 Ω
at 20 °C (68 °F)
6 - 24
ELEC
Blue lead 2
Black lead 3
Tester selector
position
Ω × 1
– +