Posted 5/14/2018 08:18 (#6759607 - in reply to #6756749) Subject: RE: how to mark coverage on 1990 w/o planting
Go to the back of the drill right besides and in front of the transmission side of the seed tank. There is a whisker switch for height on the back rank of openers. Set it for the down position even though it is up and your drill should record. Just don't forget to put it back when your done.