generator won't start

Thank you guys ; it kind of strange it been start on first crank and running smoothly so i don't suspect any big problems .One things I discovered with the LP generator is that it a gas hog and the time it shut down it suck gas so fast the tanks ice up.when thing cool down I chech and there is 12.8 V on the positive Booths leading to Generator.Also notice the oil is low,thinking may be a low oil shut down fill it to the top mark but it still won't crank over with the remote button or the switch on the generator.All fuses in the camper are good, I guess Ineed to open the access around it and start check out all electrical connections fuses and may take the starter out as you guys pointed out. Just to let you guys know I hane been frequent the forum and learn all about RV Truck camping ,get the right equipments, installed ties down, air bags.... all from you guys:So here is my thakns for sharing. Joe