Power
There are many types of forklifts that are operated by propane gas. Forklifts that utilize propane are really simple to refill. The gas is stored in a pressurized tank on the truck's back. 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 be able to control the flow of vapor. A spark plug fires up the air and vapor mixture creating pressure that moves the pistons. The pistons run the hydraulic pump and turn the wheels.

As the kinds of forklifts which are powered by propane are clean burning and have low emissions, they are best to be utilized within warehouses and other buildings.

Hydraulics
The hydraulic system of the forklift is what allows it to raise and transport really heavy stuff from location to location. A pump, tubes and cylinders 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 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 required, propane forklifts are the most suitable. Unlike a car, a forklift uses its back wheels to pivot, that enables the forklift to rapidly turn on a tight radius.