Power
There are many types of forklifts that are powered by propane gas. Propane-powered forklifts are very simple to refill. The gas is stored in a pressurized tank on the rear 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 utilized to be able to control the flow of vapor. A spark plug ignites the mixture of vapor and air producing pressure which makes the pistons move. The pistons turn the wheels and run the hydraulic pump.

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

Hydraulics
The hydraulic system of the forklift is what enables it to raise and move very heavy things from place to place. Tubes, cylinders and a pump make up the hydraulic system. The pump forces dense fluid in the tubing and into the cylinders. The pressure build up 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
Propane forklifts work well where maneuverability is needed. Not like a car, a forklift makes use of its rear wheels to pivot, which allows the forklift to rapidly turn on a tight radius.