Power
Many forklifts are made to run on propane gas. Forklifts which utilize propane are really simple to refill. The gas is stored in a pressurized tank on the truck's rear. The propane is pushed into the engine, where it is converted into vapor and the vapor mixes with air. The forklift throttle is utilized to be able to control the flow of vapor. A spark plug fires up the mixture of air and vapor producing pressure which moves the pistons. The pistons turn the wheels and run the hydraulic pump.

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

Hydraulics
The forklift's hydraulic system is what allows it to lift and move very heavy things from place to place. 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, 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 required, propane forklifts are the most suitable. Not like a car, a forklift makes use of its rear wheels to pivot, that allows the forklift to quickly pivot on a tight radius.