Power
There are many kinds of forklifts which are operated by propane gas. Propane-powered forklifts are easy to refill. The gas is stored inside a pressurized tank on the back of the truck. The propane is pushed into the engine, where it is converted into vapor and afterward the vapor mixes with air. The forklift throttle is used to be able to control the flow of vapor. A spark plug ignites the vapor and air mixture producing pressure that moves the pistons. The pistons turn the wheels and power the hydraulic pump.
Propane powered forklifts are suggested for use in other buildings and warehouses because they are clean burning with low emissions.
Hydraulics
What allows a forklift to raise and move heavy things from one location to another is the hydraulic system. Tubes, cylinders and a pump make up the hydraulic system. The pump forces dense fluid through the tubing and into the cylinders. The build up of pressure pushes a piston, that raises the forks. When the forks are lowered by the operator, the hydraulic fluid flows out of the cylinders and back into the pump.
Steering
Where maneuverability is needed, propane forklifts are the most suitable. Not like an automobile, a forklift utilizes its rear wheels to turn, which allows the forklift to turn fast on a tight radius.