Mowing an incline or slope: Up-Down? or Sideways?

[Ric]

Check the manual before driving your mower along the side of an incline like a ditch.
Depending on how your engine is designed you may be starving your engine of oil
driving it along a incline.

If your running a splash lubricating system that may be possible but not likely, as long as you have a Fully pressurized automotive-style oil pump w/spin-oil filter your engine shouldn't be starved of oil.