Some do.
They are OK engines. I would say that Yamaha engines are the best though.
There are 3 types of engines. Inboard engines, outboard engines and sterndrive engines. Sterndrive engines are located in the hull near the stern, but have a small leg protruding through the stern for the propellor. There will be a rubber gasket sealing the outboard leg from the inside of the boat.
yes
My guess is that the small battery used for such engines would not hold a charge very long in the constant cold weather a snow blower endures.
Premium gasoline
Unless it is a rechargeable battery you cannot charge a dry charge battery. If it is rechargeable you need to purchase a charger for that size battery. Automobile batteries are not dry charge.
No the battery don't have a magnetic charge.
how do you charge a vespa battery
No, it takes electricity to charge a battery.
550 cca
A battery charges nothing it accepts a charge from the alternator.
You can not charge a battery in the microwave.