Lighting System; Pocket Tester - Yamaha WR250F(D) Owner's Service Manual

LIGHTING SYSTEM

INSPECTION STEPS
Refer to the following flow chart when inspecting the lighting system for possible problems.
Check the bulb and bulb socket.
OK ↓
Check the taillight (LEDs).
OK ↓
Check the AC magneto. (Lighting coil)
OK ↓
Check the entire lighting system proper for con-
nections.
OK ↓
Check the rectifier/regulator. (Out-put voltage)
• Remove the following parts before inspection.
1. Seat
2. Fuel tank
3. Left side cover
• Use the following special tools in this inspection.

Pocket tester:

YU-3112-C/90890-03112
No good → Replace the bulb and/or bulb socket.
No good → Replace the taillight assembly.
No good → Replace.
Improperly
Repair or replace.
connected →
No good → Replace.
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LIGHTING SYSTEM