When I removed the carb, there was a rubber tube coming from the direction of the exhaust connecting to the back plate of the air cleaner housing. What is this? Is it some sort of exhaust recycling, emissions control thing or what? Yes. The dead man cable is actually a brake pad that presses against the flywheel and cuts the spark. The plug should be about .030 and probably a J19LM. If your front wheels don't have grease fittings, there isn't much you can do.

Are you posting this just in carnivorous plant? I don't think many pros frequent this forum. Also for what its worth if I were you I would explicitly state "I am looking for an internship" if I were you.

Are you related to Bobby Bouchet "The Waterboy"

I've been thinking about your question quite a lot because one of these days we will be bringing a new puppy home to our already existing fencing system. So your question has me thinking "how will we handle the puppy stages?" In general I am in agreement with Meghane. I think if I was bringing a pup home now, I would take the following steps. First, do you have an area with a "real" fence? We do and I would want a place that I can put Pup when I am outside but unable to watch her closely. Second, when she is out, I would want to be sure that she is very aware of where the boundary is located. As Meghane said, use the collar with the prongs covered so a shock is not possible, but the pup still hears the tone. Go ahead and put the white flag markers along the boundary too so she can both see and hear the limits. Call her back when she reaches the zone, play with her, tell her how good she is, make it a big game and happy thing to come back into the yard. If you do not have enough control to do this, then don't allow her out without a leash. Having trained two dogs that never experienced running at will and one dog (who originally did not belong to us) that ran freely for two years of his life, I can say that it is MUCH easier to teach the dogs where the boundaries are if they are never allowed to cross them. I agree with the others that I would not expose the pup to the shock until she is older. However, if you have done the training well up to that point, she may never even need a shock or, as Meghane said, once or twice will do it. Good luck!