sub-compact rotary tiller item recommended tractor horsepower rt4ld weight hitch limited cat 1 & quick hitch compatible working width tilling depth up to 7" overall width power take-off speed flanges per rotor tines per flange rotor rotation rotor shaft speed skid shoes top gearbox construction top gearbox lubrication ep 80-90w gear oil side gearbox construction side gearbox lubrication ep 80-90w gear oil tarterusa.com