Hi, I have just been given an old Snapper self propelled mower which according to the Briggs and Stratton Code dates to 1978. I would like to get it going and hopefully use it on my block. I believe it has not been used for a long time and despite putting new fuel in, it will not start. At present it has a Champion CJ8 spark plug in but I am not sure if this is the correct plug as there seems to be no spark when I take it out and place it against the mower body. I do not have a manual for the mower and have little experience working with 4 stroke mowers. In Australia we were often brought up with the trusted and ever reliable Victa 2 stroke mowers. I would appreciate any advice and direction in getting this old but world renowned American workhorse going again.