John Deere Deck Drive Arm replacement.

John Deere M163788 Deck Drive Arm X300 X320 X340 X360 X500 X520 X530 X540 X590 Series Tractors
Correct deck belt routing installation.
Replacement Part is different than original. However, it does work and fit properly. Explained at the end of the video.
JDM1 63788 ARI Sku: M16 3788 Arm
JDM1 60844 ARI Sku: M16 0844 Bushing
JD19 M781 1 ARI Sku: 19M 7811 Srew / Bolt