Power
There are many types of forklifts which are powered by propane gas. Propane-powered forklifts are very simple to refill. The gas is stored in a pressurized tank on the truck's rear. The propane is pushed into the engine, where it is converted into vapor and afterward the vapor combines with air. The forklift throttle is used to control the flow of vapor. A spark plug fires up the vapor and air mixture creating pressure that makes the pistons move. The pistons power the hydraulic pump and turn the wheels.

Propane powered forklifts are suggested for use in warehouses and other buildings since they are clean burning with low emissions.

Hydraulics
The forklift's hydraulic system is what allows it to lift and move really 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 raises the forks. When the forks are lowered by the operator, the hydraulic fluid flows out of the cylinders and back in the pump.

Steering
Where maneuverability is needed, propane forklifts are the most suitable. Unlike a car, a forklift makes use of its rear wheels to turn, which allows the forklift to turn fast on a tight radius.