Power
Numerous forklifts are made to operate on propane gas. Forklifts which use propane are very 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 the vapor combines with air. The throttle of the forklift is utilized to be able to control the flow of vapor. A spark plug ignites the mix of vapor and air creating pressure which moves the pistons. The pistons power the hydraulic pump and turn the wheels.

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

Hydraulics
What allows a forklift to raise and transport heavy stuff from one place to another is the hydraulic system. Tubes, cylinders and a pump make up the hydraulic system. The pump forces dense fluid in 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 in the pump.

Steering
Where maneuverability is needed, propane forklifts are the most suitable. Not like an automobile, a forklift uses its back wheels to turn, which enables the forklift to pivot fast on a tight radius.