Start off with a complete water pump, lower oil change, fuel filter`s, the oil filter and spark plugs. You need to find out if the high pressure pump screen and the low pressure manual diaphragms have been serviced recently. If not do it. Unless you know the wheel bearings have been serviced recently, do it.
“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” GOD IS GOOD