I have a snapper 1833 hydro 18 hp. I have no spark at the spark plug. I have bypassed the seat switch and still no spark. The battery is weak so I jump it at the starter with the ignition switch on. I have also tried with the ignition switch on- plugged. Thanks for all the help. Hank

Not familiar with THAT Snapper.. but most other mowers have multiple safety switches... not just at the seat.