this is the version which can be used single , but was operated in a group of 4 , this trailer has boiler , hot and cold water tank ,washing machine ,dryer, boiler , hydro extractor ,and tumbler.The washer has a full brass interior , all well made . I got a spark on the plugs , petrol reaches carburettor , but it will not roar into life , wiould there be anywere on the world still a manual be for these ?