Unit comes standard with a 12-volt on board electric starter and clutch. A passive vacuum and EcoSense emissions monitoring system are optional at extra charge (active vacuum is standard on the 40? Model). Powered by an 18-HP, 603 cc Kawasaki engine, the 420BU uses 34 percent less fuel and requires 40 percent fewer oil changes than other machines in its class. 7k new used only for less then an hour then put into storage comes with propane tank and pads.