My buddy Cliff bought this late 50's to 60 case 310 G track dozer loader for a thousand dollars. It has a 4 cylinder gas engine. The throttle was sticking in this video. He has since lubed it and got it to work freely. That's why you heat it bogging down in this video he couldn't throttle it up while going into a pile of dirt, almost stalling the machine. I told him snatch it up when he called me about buying it. I told him worse case scenario he could get his money back at the scrap yard. We'll definitely get his monies worth using here at my property clearing the back yard. Approximately a half acre needs clearing big oaks cut down and filing in the low spots. I had a gas pipe line company give me a little over 20 truck loads. Tri axle dump trucks delivered me load after load of the dirt they were excavating to install a new 12" trunk line of natural gas up the east coast. I wish I would've had more room at the time to get another 50 loads from them. My back yard is very low and unlike my neighbors, I don't want to turn mine into a pond. I'll upload videos of the progress as time goes by.