A gas lawn mower is a lawn mower which is powered by gasoline.
When a lawn mower is used, the energy transformation that takes place is from chemical energy stored in the fuel (such as gasoline) being converted into mechanical energy that powers the movement of the mower blades. The mechanical energy is then used to cut the grass and do the work of mowing the lawn.
There are is a 18'' gasoline lawn mower at Wal-Mart for less than $100.
That will vary for each make and model of mower.
A lawn mower works by converting chemical energy (energy stored in the gas) to mechanical energy.
Wash in gasoline.
Lawn mowers are available as electrically powered or gas powered. For an electrically powered mower, the question gets a bit messy. Sure the mower itself is using electricity, but then there's the question where that electricity is coming from. Might be solar, nuclear, hydro, wind or even chemical energy that was used to generate the electricity. For a gas powered mower, it's easier - that's chemical energy. There are also the human-powered, hand-pushed mowers. They would be powered by humans, which are powered by chemical energy. Stored Energy (Electricity, Petrol) to Kinetic Energy (Movement) with the by-product of heat energy.
try vinegar and baging soda
The way to drain gasoline from a Briggs and Stratton lawn mower is to take the oil cap off and drain the oil. From there, run a rubber hose into the drain and siphon the rest of the oil and gas out.
Push lawn mowers require regular gasoline like most cars.
Regular unleaded gasoline is usually the recommended fuel.
Any maker that produces lawn mower engines.