Power
Many forklifts are designed to run on propane gas. Propane-powered forklifts are really simple to refill. The gas is stored in a pressurized tank on the back of the truck. The propane is pushed into the engine, where it is converted into vapor and then the vapor combines with air. The forklift throttle is utilized to be able to control the flow of vapor. A spark plug ignites the vapor and air mixture creating pressure that moves the pistons. The pistons run the hydraulic pump and turn the wheels.

As the types of forklifts that are operated by propane are clean burning and have low emissions, they are best to be utilized in other buildings and warehouses.

Hydraulics
The hydraulic system of the forklift is what enables it to raise and transport very heavy stuff 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 lifts the forks. When the operator lowers the forks, the hydraulic fluid flows out of the cylinders and back in the pump.

Steering
Propane forklifts work well where maneuverability is necessary. Unlike an automobile, a forklift uses its rear wheels to pivot, that enables the forklift to turn fast on a tight radius.