I have a Ferris zero -turn riding mower, IS3000Z. On the left hand side, near the choke, is a display area called Ferris Hours where the number of hours mowed is normally displayed. Today, instead of hours I found three separate, hard to read, communications, the last being "8.8" with SVC under it. I can find nothing about this display in my operator's manual. Has anyone run into this? Mower seems to run fine but I do want to keep track of the hours. Mower is serviced once a year, about a month ago, and additionally when there is a need.