Power
There are numerous kinds of forklifts that are powered by propane gas. Forklifts that use propane are easy 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 the vapor combines with air. The throttle of the forklift is utilized to control the flow of vapor. A spark plug fires up the air and vapor mixture creating pressure that makes the pistons move. The pistons turn the wheels and power the hydraulic pump.

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

Hydraulics
The hydraulic system of the forklift is what enables it to raise and transport really heavy stuff from place to place. A pump, tubes and cylinders 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 forks are lowered by the operator, the hydraulic fluid flows out of the cylinders and back into the pump.

Steering
Where maneuverability is necessary, propane forklifts are the most suitable. Not like an automobile, a forklift utilizes its back wheels to pivot, which allows the forklift to rapidly turn on a tight radius.