Yamaha YFM400FWA 2000 5GH3-AE1 Service Manual page 370

4.On command four-wheel drive switch
Refer to "SWITCH INSPECTION".
5.Gear motor
Check that the shift fork sliding gear is in
the 2WD position.
Disconnect the gear motor coupler.
Remove the gear motor from the differ-
ential gear case.
Connect the battery (12 V) to the gear
motor terminals.
2WD → 4WD:
Battery (+) terminal →
Brown/White terminal 1
Battery (–) terminal →
4WD → 2WD:
Battery (+) terminal →
Battery (–) terminal →
Make sure that the drive gear (shift fork
sliding gear) operates correctly.
NOTE:
When installing the differential gear
case in the gear motor, refer to "CON-
STANT VELOCITY JOINTS AND DIF-
FERENTIAL GEAR" in CHAPTER 7.
EB803028
6.Wiring connection
Check the connections of the entire
2WD/4WD selecting system.
Refer to "CIRCUIT DIAGRAM".
2WD/4WD SELECTING SYSTEM
*
C0NTINUITY
CORRECT
Sky blue terminal 2
Sky blue terminal 2
Blue/Black terminal 3
CORRECT
INCORRECT
Replace the on command four-wheel
drive select switch.
INCORRECT
Replace the gear motor.
POOR CONNECTION
Properly connect the 2WD/4WD selecting
system.
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