'84 500SEL: How do I reach the engine coolant drain plugs?

[braverichard]

Trying to get rid of the green coolant in my '84 Euro 500SEL. I've lcoated the two drain plugs on the crankcase, however I am having a really hard time getting my hand through to reach them -- at least to reach the one on the driver's side, which is the one I have started working on. Any help from anyone that's done this before would be greatly appreciated. Thanks, Richard.