Power
There are numerous types of forklifts which are powered by propane gas. Forklifts that use propane are really easy to refill. The gas is stored in a pressurized tank on the truck's back. The propane is pushed into the engine, where it is converted into vapor and then the vapor mixes with air. The throttle of the forklift is used to control the flow of vapor. A spark plug ignites the air and vapor mixture creating pressure which makes the pistons move. The pistons run the hydraulic pump and turn the wheels.

Because the types of forklifts that are operated by propane have low emissions and are clean burning, they are suitable to be utilized within other buildings and warehouses.

Hydraulics
What allows a forklift to raise and move heavy stuff from one place to another is the hydraulic system. Tubes, cylinders and a pump make up the hydraulic system. The pump forces dense fluid in the tubing and into the cylinders. The build up of pressure pushes a piston, that lifts the forks. When the operator lowers the forks, the hydraulic fluid flows out of the cylinders and back in the pump.

Steering
Where maneuverability is necessary, propane forklifts are the most suitable. Unlike an automobile, a forklift makes use of its rear wheels to turn, that enables the forklift to rapidly pivot on a tight radius.