Power
There are numerous kinds of forklifts which are powered by propane gas. Propane-powered forklifts are easy to refill. The gas is stored inside a pressurized tank on the truck's rear. The propane is pushed into the engine, where it is converted into vapor and afterward the vapor mixes with air. The throttle of the forklift is utilized to control the vapor flow. A spark plug fires up the mix of vapor and air producing pressure that makes the pistons move. The pistons run the hydraulic pump and turn the wheels.

Forklifts that utilize propane are suggested for use in warehouses and other buildings because they are clean burning with low emissions.

Hydraulics
The forklift's hydraulic system is what allows it to lift and move really heavy objects from place to place. Tubes, cylinders and a pump make up the hydraulic system. The pump forces dense fluid through the tubing and into the cylinders. The pressure build up 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 in the pump.

Steering
Where maneuverability is necessary, propane forklifts are the most suitable. Not like a car, a forklift utilizes its back wheels to turn, which allows the forklift to pivot fast on a tight radius.