Under side of mower got wet and self propel stopped working. Underside dried off and self propel works again. Why is this happening?
Electronics just don't like to be wet When they dry out they can go back to work, as long as the water doesn't conduct high voltage and fry them. Same reason if you drop your phone in water and get it out quickly you can save it by putting in something absorbent like rice to draw the water out, and it will power on again.