My nephew's Scott's 1642 stopped moving last season, an obvious transmission problem. All the externals looked ok and the Deere dealership wanted $500.00 + labor, which was not an option. I removed and disassembled the transmission to find the pin, #19 on the schematic, had fallen out and found its way between the pump #5 and the center block, #96, ruining both parts. I ordered the parts online for $155.00 and I'm awaiting delivery.

The schematic can be accessed by registering as a user at tufftorq.com and I also plan to use 5W50 synthetic oil since the heat generated by these units can be tremendous.

I'll update when I get it running.

Sessman