Had my MDI unit replaced in 2008 as part of the quality campaign although no fault was apparent however this weekend my D2-75 engine just didn’t want to start. pushing the EVC start button just caused a click and nothing else! not sure if its the MDI unit but after messing around for an hour she fired up. however sometimes it takes 2 or 3 pushes of the start buton to get her to fir up. has any on got a schematic of the MDI unit part number 21120710? Cheers