Having removed starters on Ferrets a good few times in Workshops, we had a 9/16" A/F combination spanner, cut it in half so we had a short flat ring spanner and a short open ended one. The short ring spanner had a hole drilled in the end with a piece of string attached, so if you dropped it, you could easily retrieve it. Still got one in my toolbox and have found it useful in other situations as well, seem to recall lower bell housing bolts in a Saracen being one....