VOLVO PENTA ENGINES
I have an older Volvo MD2B which has a hand crank. I''ve never had to use it but have turned the engine with it and it is stiff. I have started my engine with a weak battery by lifting the compression levers until the flywheel is turning and then pushing the levers down. In my boat that takes two people though because the key start is in the cockpit. There is a cold weather assist button by the injector pump if you are trying to start in cold weather.