Don’t junk it yet, or let the shop replace the transmission!
A customer of ours recently brought in a really nice 2005 Honda Rancher TRX400FA Automatic that had been swamped in a deep mud hole by his wife. After they managed to pull it free from the muddy abyss, it stopped pulling forward or reverse in both auto or electric shift mode. The quad would lurch a
Source: Hondamatic Headaches TRX400FA Rancher Automatic Slipping