Here's what I've found.... but the information isn't complete.
Oil Drain Plug - 16.5 FOOT-POUNDS (on-line converter should get you to newton-meters)
Oil Filter - 2 full turns past the point where rubber gasket contacts motor (you'll probably only get 1-3/4 turns)
Spark Plug - Not sure but apparently they're a real PITA to get to... unless you really need to change them (rough running motor) you might consider leaving them alone.
Good luck and
to the site.