I have a low hr 520xi, and recently had some summer help using it. The boys just used it to pull a cart with brush.. starting and stopping the tractor many times. When I went to use the 520, it would not turn over, and I assumed that the battery was dead. After charging the battery and realizing that there was something more than a possible dead battery, I thought maybe the soleinoid was faulty or a loose wire. I checked all the connections, and could not find any that were loose or disconnected. However, after fussing with it, the tractor turned over and started.
All seemed ok, except that now the oil pressure light was on, and the oil pressure gauge was pegged below the red. I pulled off the air filter, and the plate and the connection was solid to the sender. I fully believe is is a connection issue, and think there must be something that I disturbed with the starting issue.
As an aside, the ground to the battery was not properly tightened, and that resolved the starting issue.
I did take out the 3 relays, and interchanged them to see if one of them was not working. I checked the fuses as well.
any insight would be much appreciated!
Mark