Lister CS single cylinder diesel which the Indians are now making well engineered copies of.
I hope they have improved over the years. Very few stacked up against the real thing, just a few years ago. Flywheels with filler, casting sand in the engine and a whole list of other shortcomings.
Much like chinese ‘knock-offs’ – a wide range of quality, dependent on where made. But they do, at least, put them to work – and the old CS was a reliable engine. The CD was, of course, even better.