Picked up a walk behind yesterday at an auction, won't start. Checked for spark, not getting any. Checked all of the saftey switches, all check good. Found these tests for the coils, Did the Ignition coil check, and came up with.... Primary - jumped between .8 and 1.2 ohm secondary - 19.18 ohm So, I am guess it's the ignition coil since it's not in spec. Where is the control unit that the image shows? Does this engine have one? Anything else I should test before getting a coil? Any help would be great!