Will this work?

[In The Ten Ring]

I want to get anti-freeze into my engine's water jacket this weekend. I have everything back together cooling and engine-wise BUT I'm missing a tight-fitting gasket where the fuel line screws into the carb. No one seems to carry it and I don't want to buy a whole roll of gasket-making material to make my own.

I'm afraid to start the engine without that gasket, in case it leaked and fuel dripped down to find an ignition source and burn my truck and garage to the ground.

Would it work to fill the radiator and use the starter motor to turn the engine over and with it the water pump?

I have no fuel the system at all: gas tank, lines, pump, carb are all empty. I have the original-style mechanical fuel pump. Would it damage anything to use the starter motor to try and circulate coolant fluid?