The fuel line is simple - only one to deal with.Does the 200 Classic have the adjustable oiler knob on the clutch side? (I haven't looked at my saw yet).The oil lines can be a bit tricky.Just remember that the line with the oil pick up on it goes to the bar pad.The line with the duck bill in the tank goes either to the carb or the port on the engine (depends on which system it has).If the lines are reversed you'll have a great mosquito fogger.