Tire diameter
Motor displacement
PTO ratio
MEM_TireDiameter
pick a tire size
cm
Use the chart value, not a tape measure — it's a loaded-diameter figure in cm.
MEM_MotorDisp
enter two digits
cc
The tag reads cubic inches; the parameter is cubic centimetres. Both wheel ends must have the same motor size.
MEM_PTO_Ratio
select transmission and PTO
whole-number percent
Confirm the transmission first. The same PTO gives a different ratio on a 3000 than on a 4000. If the ratio shows "not used," that PTO is not applied on that transmission — check the tag and the transmission model.