Power
There are many types of forklifts which are powered by propane gas. Propane-powered forklifts are simple to refill. The gas is stored inside a pressurized tank on the rear of the truck. The propane is pushed into the engine, where it is converted into vapor and the vapor mixes with air. The throttle of the forklift is utilized to be able to control the flow of vapor. A spark plug fires up the mixture of vapor and air producing pressure which moves the pistons. The pistons turn the wheels and run the hydraulic pump.

Propane powered forklifts are recommended for use within other buildings and warehouses since they are clean burning with low emissions.

Hydraulics
What allows a forklift to raise and transport heavy things from one location to another is the hydraulic system. Cylinders, a pump and tubes 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, which lifts the forks. When the operator lowers the forks, the hydraulic fluid flows out of the cylinders and back into the pump.

Steering
Where maneuverability is necessary, propane forklifts are the most suitable. Unlike an automobile, a forklift utilizes its rear wheels to turn, which allows the forklift to rapidly pivot on a tight radius.