Here is a few YouTube videos I made on troubleshooting and repairing 4wd problems.


Cleaning and Retiming Yamaha 3B4 Servo - YouTube
https://www.youtube.com/watch?v=IlXKTR46sSg

Cleaning and Retiming Yamaha 5KM servo motor - YouTube
https://www.youtube.com/watch?v=PqdEdRqxS6M

Yamaha Servo motor replacement Sealed Cases (98-01 models) - YouTube
https://www.youtube.com/watch?v=CbgLENDH8Gs

Yamaha 4wd Servo (motor only) Replacement - YouTube
https://www.youtube.com/watch?v=PUP3gC4VAeI

Testing the three 4wd relays on Yamaha ATV's - YouTube
https://www.youtube.com/watch?v=phNDJka5tBA

Testing the three 4wd relays version 2
https://www.youtube.com/watch?v=mP06edwS1_E

Testing the three servo types - YouTube
https://www.youtube.com/watch?v=6BiuD5qfCw4

Testing the Push Button 4wd Switch on Yamaha ATV's - YouTube
https://www.youtube.com/watch?v=SGz2ZivOAj8

Cleaning the Yamaha 4wd push Button Switch - YouTube
https://www.youtube.com/watch?v=rCNTXsrnRaQ

Testing 4wd Switch Yamaha ATV's/SxS's version 2 - YouTube
https://www.youtube.com/watch?v=Q-B83KDHX3c