the "problem" is that the simpler foot start ignition switch is not reproduced, the only new "off/on" ignition switch available is the generic one like Bart linked, sometimes called a forklift ignition switch
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics