2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 353Get this manual
COOLING SYSTEM TROUBLESHOOTING IF THE FAN MOTOR DOES NOT MOVE: Procedure Check: 1.Fuse (main) 2.Battery 3.Main switch 4.Fan motor 5.Circuit breaker (fan motor)
6.Thermo switch 7.Wiring connection (the entire cooling system)
NOTE: Remove the following part(s) before troubleshooting1)Seat 2)Front carrier 3)Front fender Use the following special tool(s) for troubleshooting
Pocket tester: PNYU-03112, 90890-03112