The first 7 years after I left school and living in the city, were spent living in a rented farmhouse in the wheatbelt, where we only had 32V power. We had a stack of 2V lead-acid batteries and a 32V generator run by a single-cylinder, hand cranked, YB model Southern Cross diesel engine. It was no fun cranking up that engine on cold Winter mornings!
There was a brass cup inserted upside down into the rocker cover, you filled this brass cup with oil and poured it into the orifice, and the oil ran into the intake and assisted in cold starting.
The decompression device was a pin that went under the inlet valve and held it open, and which pin was operated by a lever and rod assembly, which was actuated by turning a pipe sleeve that rotated on the cooling water intake pipe.
So you filled the old YB with oil, rotated the sleeve as you slowly cranked the engine, until the inlet valve was held open, then you picked up cranking speed until it felt like your arm would fall off, and then you rotated the decompression sleeve to close the intake valve, and hopefully, she'd fire up! Cold mornings with frost on the ground and thick oil made this a "short straw" job!!
The engine was built in the Toowoomba Foundry and I was surprised to see Southern Cross built over 14,000 of them! They were the days when we built good stuff in Australia, designed by Australians!
We had also Dunlite Wind Generators, too, they were quite advanced for their time, and large numbers were exported, even to places such as Canada and the U.S.