Cant start murray pro series

[countryboy8]

Today I couldnt get my Murray pro series 17.5 hp ridding lawn mower going so I boosted it and pressed the clutch turned the key and off it went and I was on it for maybe 20 minutes then I shut it off and went inside the house to get a drink i was inside for maybe 5 minutes then went back out to start it and it didn't go so I boosted it again and it wouldnt even make a sound when I turn the key with the clutch pushed down all the way anyone know why it won't fire up any info greatly appreciated ,thanks

 

[gdog]

You batery might be drained very lo how r u boosting it