2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 333Get this manual
CHARGING SYSTEM EB804010
TROUBLESHOOTING IF THE BATTERY IS NOT CHARGED: Procedure Check: 1.Fuse (main) 2.Battery 3.Charging voltage
4.Charging coil resistance 5.Wiring connections (the entire charging system)
NOTE: Remove the following part(s) before troubleshooting: 1)Seat 2)Fuel tank side panels Use the following special tool(s) for troubleshooting
Inductive tachometer: PNYU-8036-A Engine tachometer: PN90890-03113 Pocket tester: PNYU-03112, 90890-03112
EB802011
1.Fuse (main) Refer to "SWITCH INSPECTION"CONTINUITY