The Easiest Way to Replace Drive Belt and Tension Spring on Your Zero Turn? Kubota Z421

Change the drive belt and replace the tension spring with minimal disassembly of your mower. This video includes part numbers for both and shows how the spring mounts.
Chapters:
0:00 Intro and overview
1:04 Tension spring breaking and results
2:30 Price comparison from previous replacement
3:38 Fan locations
4:39 What has to be removed
6:20 Belt with part number
6:43 Belt routing
7:25 Tension spring with part number
8:07 Reassembly