went to look at a 743b bobcat. missing the bucket ram but otherwise it looks pretty good. started up fine and all hydraulics worked, steering and all worked fine. no leaks or unusual noises. guy delivered it yesterday. started up and unloaded it fine. drove it up by the barn and parked it. went to start it this morning and it wouldn't start. no smoke at all. turned over fine. did notice the fuel gage was reading zero. put 5 gallons of diesel in it. opened the vent on the fuel filter. made sure fuel was coming out it. pumped the bulb couple times and it was hard so I don't think it has any air in it. I am completely new to bobcat. never have owned on so I am wondering if there's something I have to do besides turn the key. I did have the bar all the way down in my lap when I tried to start it. all help appreciated.