Ok, well I managed to get 4 washers courtesy of John @ Bomax free of charge.
Now in my service manual it says to remove the carbs. I need to drain the coolant, is that necessary Bruce ? I am assuming the 9R and 6R carb. designs are the same
also once I get to the needle do I simple stick the new washer on top of the old washer and put everything back together ?
and unfortunately for the new 6R there is only one needle so if I want a bigger size I would have to get a jet kit....