There could be so many possible problems. Others may have different views on the problem....here are my thoughts...I'm not familiar with your exact snow blower Some have a battery and you may have run the battery down. Others connect to a 115v recepticle. If you kept cranking it, the starter motor may have over heated and tripped out on overload. Once the motor cools down, you should be able to crank it. Look to see if there is a fuel shut-off valve. Perhaps it is turned off. Do you smell raw gas? I have seen cases where fuel froze in the float bowl or fuel line also.

I have a 8HP Briggs motor. When I have it in side (50 degrees) it starts on the first pull every time. when I have it setting out side it will not start. I took off the spat plug and set on the block and it dose have spark. I also took the gas hose off the carb and the gas runs out. could you give me some ideas on what to try?