See video on hand starting a Lister JP2M (marine) diesel engine (1434cc/pot, 26" flywheel). Cunning method employed to flick single decompressor off.

https://youtu.be/H5deIvEbA4A

I have similar 1936 engine in my narrowboat but only hand started once blush


Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone