Hi Suenron, and welcome to the forum.
Thanks for the pics of the Whizzer Ambassador.
The Ambassador is very similar to the Whizzer Sportsman, came out in 1949.
The sportsman has 20" wheels, the Ambassador 24". Both don't have pedals.
The Ambassador came out in 1951, and both Ambassador, Sportsman had the 300S or 600S motors, they came with a kick start. The motor you have is a 700 motor, if you look at the case down by the drain plug you'll see the number 7. someone has tried to remove or hide the motor serial number i think.
700 motors didn't come with the kick start.
Frame will need alot of work to bring it back to original, still doable.
Wheels are very nice because they have the big drum brakes.not the right seat either.
Ray