Hi, I'm trying to work out why my mower won't start. it has always been a great mower. It is a Victa commander 1996, 160cc. The original problem was a carby cable popping out. Now it won't start even with fuel in the chamber. I think the carby is working OK. I tested for spark and yes, there was some but I can't tell if it was enough so I went and had a look at the kill wire. There are two wires that come out of the engine and when I test with a multimeter they show zero resistance to each other and both show zero resistance to the engine frame. Does this mean the coil is shorted to earth?