Skimming through the manual, it sounds easy enough to change the chain. How hard can following 9 sentences be?? (I especially like step 9: "Complete the engine.")
But looking at the part list, I don't have a chain grinder or the pin puller or the torque wrench or 27 mm socket or 5 inches of extensions or three vise-grips ...
I'll buy all that stuff once I return to North America and start trolling craigslist for W126s and SLs. For now, I'm living lean.