Quickly starting needs 3 things.
1. Fuel in the carburetor. Old carbs are notorious for drying up overnight
2. Correct fuel level (float level)
3. Tightly adjusted automatic choke


Having to wait 10 minutes before it'll start is a sign of flooding

cranking a long time is not a classic sign of flooding but of a dry carburetor. Tomorrow
before you try to start it, look at the carburetor sight glass. Do you see fuel halfway up the glass? If so, it is not flooding. If the float high up (can you see bottom edge of the float)? Then it may be flooding


Before I attempt to start it:
* KEY OFF, and Pump pedal one time
* Remove air cleaner lid
Is choke 100% closed? If it's open even a little tiny bit, that is a big problem right there. Adjust it so the choke is 100% closed. This will allow it to start right off without extensive cranking even when it's very cold. See Choke Adjustment

My B210 chokes didn't have summer/winter position. They had unlabeled marks



The center mark is where it is set when assembling the carburetor, but is not usually the correctly mark -- which can only be found through adjustment

Now, if the choke IS closing 100%, while the lid is off, hold the choke open and rotate the throttle while looking down the carburetor. Is any fuel spraying? If not, it'll need some cranking to fill the fuel bowl. Or, if fuel is dribbling out even when the throttle is not moving then the float needs adjustment. See Float Level Adjustment