A forklift should be checked properly and given a test run prior to purchasing it. This applies particularly to trucks being bought on the Internet. It is very important to detect possible problems with trucks obtained from businesses on line.
Starting the engine from cold is a great idea. Note whether there is excessive smoke and the ease with which the engine turns over. This is particularly vital with IC engine trucks.
Testing the performance of the truck in challenging situations should be included in the test run. A skilled operator can operate the truck in reverse and forward, up the ramp.
You could perform your own inspection of an IC engine truck. On a clear area of floor, run the truck around for a few minutes while a qualified driver tests the hydraulic functions. Then, examine the ground underneath for signs of fluid leakage. Even seemingly minor leaking can lead to serious issues that would be expensive to repair later on.
A trained person should check the chains and masts. Check with and without a load that the mast works smoothly. Watch for 'binding' or sticking of the mast. A warning indication is play in the mast channels or between the fork carriage and mast. One more is creeping down or creeping forward of the mast when loaded. These can be symptoms of problems with seals, ram or valve.
The mast may have been changed at some time if the truck is used. Make certain that the mast and any fitted attachments follow the rating plate on a truck. Make sure that the sideshift is not sticking when loaded.
Looking closely at the thickness of the heel for wear or damage must be included in the inspection. The truck's manufacturer specifies minimum thickness. A loose fit might mean the carriage or hanger points are worn. Look for cracks on the arms at heels and mountings.