Is it safe to leave tractor ignition on my b5100 with out starting it? I have heard people say with cars that you should not leave ignitions on as it can damage the ignition coil but I don’t think this is applicable on a Diesel tractor. The reason I ask this is our property boards a single carriage way lane/road and I have some dead trees to fell. The trees will block the road when I cut them so I am thinking about parking my tractor across the road with its hazard strobes on while I fell the trees and then cut them up with my chainsaw. I could leave the engine running but am just wondering if its ok to have just the ignition on and I can then save a bit of fuel and also hours on the tractor.