Can't say on the whole rig but my experience with HISUN engines has not been pleasurable to say the least. Makes you wonder why they want to dump it with only 100 miles. Have you actually Seen it or just an ad? Beware of scams. See clear title before you buy.
Remove passenger seat. It's a typical m/c type dipstick on the side of engine. If you need to add or change oil, be certain it's WET CLUTCH approved engine oil. Full synthetic auto type oil will fry you clutch quickly.
Air bubbles in recovery bottle.....Head gasket leaking..air blocking coolant flow...chronic Massimo issue.. mine did it first day...replaced mine,still leaked...cracked head..replaced head...solved
I looked up his UTV..it's nearly identical to mine except 50 hp to mines 39.bed appears. Same size..I Have loaded mine to capacity and it took 2 of us to lift. Can't imagine trying with double that weight piled on. Towing 2000 lbs I. get ,cause my 500 can tow 1500 but half ton in that plastic bed?dicey