Glad I found this thread, I'm having trouble getting fuel to pick up on my MVVS 1.6 so I'll try priming the membrane and see if that helps. I did find out though why the warning was given to watch how easily the engine may fire. I did squirt some fuel into the carb and brought the prop around with the switch on. I'm now sporting a lovely black finger nail on my third finger that throbs every time I put my hand down. This thing sure fired a lot quicker than my magneto engines do. OOWWW.

Three fingered Harry