Hi. I have two questions I was hoping someone could help with. First is regarding my hour meter on my B7100HST-DP. It just quit working the last time I used it. I have checked to see if any wiring wiggled loose, or if I could see any broken wires. I noticed nothing out of place. I'm not a mechanic, but I'm a farm kid who's not scared to try and fix things. The problem is that I'm not sure how the hour meter gets it's readings, or where it's wired to. Any suggestions? It has worked fine until the last time I used the tractor. Second, I have guessed that my B7100HST was built in 1987. My dealer can't answer the build year question either. The serial number is 73856. The engine number is 891494. Any advice, suggestions or comments would be greatly appreciated. On a side note, the tractor was purchased new by my Dad, and I got it with the farm when I purchased it from him. I bought my ZG327 brand new in 2008. Love them both. Great machines....especially the tractor. 708 hours on the meter. Need to fix that hour meter ASAP. Thanks again.