here is a link to see my mower drive!
this tractor has had a total of two major mods to make this John Deere STX 38 able to travel at 14 MPH and brake well too.
1. I swapped the rear 6 inch pulley with a 3 inch pulley
2. I installed a gas pedal using a bicycle brake handle
3. i cleaned and oiled the brakes to make sure they could stop the machine going 14 MPH
Now my JD STX 38 is a fun weekend/ free time machine to ride in my woods or around the neighborhood.