Power
There are numerous types of forklifts that are powered by propane gas. Forklifts that use propane are really simple to refill. The gas is stored inside a pressurized tank on the rear of the truck. The propane is pushed into the engine, where it is converted into vapor and then the vapor mixes with air. The forklift throttle is used to be able to control the vapor flow. A spark plug fires up the mixture of air and vapor producing pressure which makes the pistons move. The pistons power the hydraulic pump and turn the wheels.

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

Hydraulics
The hydraulic system of the forklift is what enables it to raise and transport really heavy things from location to location. 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, which raises 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 a car, a forklift uses its back wheels to turn, that enables the forklift to quickly pivot on a tight radius.