Power
Numerous forklifts are designed to operate on propane gas. Forklifts that utilize propane 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 the vapor combines with air. The forklift throttle is utilized to control the flow of vapor. A spark plug ignites the air and vapor mixture creating pressure that makes the pistons move. The pistons run the hydraulic pump and turn the wheels.

Because the types of forklifts which are powered by propane are clean burning and have low emissions, they are suitable to be used in warehouses and other buildings.

Hydraulics
The hydraulic system of the forklift is what enables it to lift and transport really heavy stuff 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 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 needed, propane forklifts are the most suitable. Not like an automobile, a forklift uses its rear wheels to turn, which allows the forklift to quickly pivot on a tight radius.